Communications Patents for Sale or License

Abualeiz Antenna

It’s a method which is been used for designing passive RFID tags with multi frequencies, and multi memory. It has ability to divide the tag memory into many parts. Each part can be administrated by its one chosen frequency band. It is an antenna with self matching impedance compatible with all commercial RFID chips. It is used for design passive- microwave -RFID tag antenna (Up to 10GHz).
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The Optical Memory Unit for Capturing Complete Analog Motion

The OMU is an inkless pen, as you write it records all hand movement, you are able to write your application for the software needed. The Patent has more detailed information.
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System and Method for Selectively Enabling a Control System

A Silicon Valley company has developed the ultimate in online security and patented technology they call “Alive Biometric Signature Authentication Identification Security Systems Solutions™”(ABSAISSS) coupled with “Fragmented Character Data Storage Infrastructure Server Vaults™” (FCDSISS). “These Alive Biometric Security Systems and Solutions are ideal for preventing almost all crime. The technology creates a fool proof security system. The new systems guarantee’s a complete “l
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Combination Trunk Cover with Spoiler and Scrolling Display

A trunk lid cover in combination with a car spoiler. The trunk lid cover is of flexible material and is disposed for covering the trunk lid only of an automobile. The trunk lid cover is held tightly against the surface of said trunk lid. A car spoiler attached to the trunk lid cover. A message display is mounted to the trunk lid cover or to the car spoiler. Once an Internet connection is established, merchants can send their advertising materials directly to the message display, to be dis
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Adaptable keyboard system

A system for adapting a keyboard display to a definable input language is provided. The system includes an adaptable keyboard comprising keys; a software application, operatively associated with the adaptable keyboard; and a computerized system enabling to receive data from the adaptable keyboard, process and present data and operate the application. Some of the keys of the adaptable keyboard may be language adaptable, where each adaptable key includes a screen enabling to present characters ass
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Voice Over Internet Communications Algorithm and Related Method for Optimizing and Reducing Latency Delays

A method of optimizing latency delays in VoIP and other multimedia communications using IPv6 over the “publics” internet and between two end users that involves selecting an optimum VoIP route based upon periodic trace measurements of the best available VoIP routes at the time of VoIP communications and comparison of that information with historic route information between the same two end user destinations. The method of the present invention employs a dynamic data library which is a modifi
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System and Method for Incorporating a Personalized Writing Style into a Word Program

A system, method and computer writeable medium for creating a personalized font and which includes an electronic pad exhibiting a display. A stylus pen is manipulated to mark upon at least one field exhibited by the pad on its display. A separate processor operable device incorporates a keyboard, and to which the electronic pad is communicated. In this fashion, the pad is utilized in combination with the keyboard in order to create a personalized font associated with a software writing program o
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Method for remotely controlling a telephone loop/channel from another

These patents are for Call Bridge, Managed Call Forwarding, and Call Back - features common to almost all of the approx 120 PBX vendors products in the US. Marketing document is attached as a pdf.
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Mobile Remote Control of a Shared Media Resource

Systems and methods for controlling a shared media resource are disclosed. One embodiment includes an edge device adapted to control the media resource based on content selection votes received from users in the shared space who transmit their votes to the edge device over a wide area communication network. In a particular example, a user can submit a vote via a mobile communication method such as text messaging. In another example, votes can be submitted by interacting with a web page or an ema
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RF Controlled Devices to Increase Compliance with Handwashing Protocols

A system for monitoring compliance with handwashing protocols by a plurality of workers, each worker carrying a wireless tag having a worker identifier, the monitoring being performed in a facility having a plurality of areas, the system comprising a plurality of wireless tag reader/transmitters each having an area identifier, at least one wireless tag reader/transmitter being positioned in each of the areas and each wireless tag reader/transmitter being capable of reading the worker identifier
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Device and Method for Iterative Interference Compensation for Mobile Reception of OFDM Signals in Fast Varying Multipath Propagation Channels

A receiver and receiving method for Inter-Carrier Interference (ICI) compensation in an orthoghonal frequency division multiplexing (OFDM) system is provided. The receiver comprises an OFDM-demodulator (302) for demodulating a received OFDM signal r[l] into an input signal Y[l], first estimation means (304) for estimating and equalizing estimated transmit values X(0) [l] and a channel matrix H(0) [l] from said input signal Y[l], ICI reduction means (308) for reducing ICI of said input signal Y[l
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Transmission Device for Generating an Analog Modulated Pulse Train and for Transmitting the Same and a Receiving Device for Receiving a Respective Signal

The present invention relates to a transmission device and to a receiving device. In particular, the invention relates to a transmission device for generating an analog modulated pulse train and for transmitting the same, comprising an pulse generator (1), by means of which a pulse train can be generated using an individual pulse form such that the pulse train falls within the frequency range in a predefined frequency band and/or in a predefined frequency mask, to a modulation unit (2), which is
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Device and Method for Impulse Transmission and Reception Coping with Multipath Propagation, Different Types of Interference and Low Snr

A transmitter for generating a pulse train and for transmitting said pulse train, the transmitter being adapted to generate (1) the pulse train, to modulate (2) the pulse train with respect to the amplitude and/or position of its individual impulses, to spread (3), preferably to multiply, the pulse train with a predefined spreading sequence (3a), to shape (4) the individual impulses of the pulse train so that they have a frequency spectrum in a predefined frequency range and/or a frequency spect
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Method for Communicating Information

The invention relates to amethod for communicating intended information between a sender and at least one receiver in a communication system. The method comprises providing a plurality of elements to be sent from the sender to the receiver, the plurality of elements being in a first order; sending to the receiver the elements in a second order, the second order representing the intended information; receiving the plurality of elements; determining whether an order in which the elements have been
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Angled Junction Between a Microstrip Line and a Rectangular Waveguide

The present invention relates, in the field of radio-frequency engineering, to a junction element for transferring an electromagnetic wave in a strip conductor to a waveguide. In this case, a waveguide having a first opening is applied to a substrate, on which strip conductors and strip conductor stubs are also situated, and is contact-connected and/or coupled to a strip conductor or to a strip conductor and a strip conductor stub. A wave in the strip conductor then forms an electrical field in
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Device and Method for Iterative Interference Compensation for Mobile Reception of Ofdm Signals in Fast Varying Multipath Propagation Channels

A receiver and receiving method for Inter-Carrier Interference (ICI) compensation in an orthoghonal frequency division multiplexing (OFDM) system is provided. The receiver comprises an OFDM-demodulator (302) for demodulating a received OFDM signal r[l] into an input signal Y[l], first estimation means (304) for estimating and equalizing estimated transmit values X(0) [l] and a channel matrix H(0) [l] from said input signal Y[l], ICI reduction means (308) for reducing ICI of said input signal Y[l
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Switchable Freewheeling Circuit for Matrix Converters

The matrix converter for converting a single or multi-phase input voltage with a variable or fixed frequency and a variable or fixed amplitude into a single or multi-phase output voltage with a variable frequency and/or amplitude is provided with at least two input connections, at least two output connections, a large number of controllable, electronic converter switches which are each arranged between the input connections and the output connections, a controllable freewheeling circuit which is
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Monolithically Integrated Antenna- and Receiver Circuit for the Detection of Terahertz Waves

The present invention relates to a device for detecting millimeter waves, having at least one field effect transistor with a source, a drain, a gate, a gate-source contact, a source-drain channel, and a gate-drain contact. Compared to a similar such device, the problem addressed by the present invention, among others, is that of providing a device which enables the provision of a field effect transistor for detecting the power and/or phase of electromagnetic radiation in the Thz frequency range.
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Monolithically Integrated Antenna- and Receiver Circuit for the Detection of Terahertz Waves

The present invention relates to a device for detection of millimeter waves with at least one field effect transistor having a source, a drain, a gate, a gate-source contact, a source-drain channel and a gate-drain contact.Compared with such a device, the present invention is based, among other things, the task of providing a device which makes it possible to provide a field-effect transistor for detection of performance and / or the phase of electromagnetic radiation in the THz frequency range.
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Architecture and Two-layered Protocol for Real-time Location-aware Applications

A two-layer communication protocol that supports efficient real-time location-aware application on multiple mobile devices that must communicate with each other and/ or a centralized server. The two-layer protocol includes a method of communicating data between a first mobile device and a second mobile device using a server to facilitate the communication of the data. The two-layer communication protocol also includes a method of communicating data between a first mobile device and a second mobi
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Adaptive Location Data Buffering for Location-aware Applications

A method of buffering location data on a mobile device. The method transmits location data packets via an unreliable protocol to a receiving device and buffers a copy of the location data packet. Periodically, the method also transmits a location data packet via a reliable protocol to the receiving device. When no acknowledgement is received from the receiving device, the location data sent via the reliable protocol is buffered to memory. Once an acknowledgement is received from the receiving de
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Cognitive positioning system

This invention provides arbitrary positioning accuracy for cognitive radio communications in both indoor and outdoor environments adaptively. It enables the user or wireless device itself to adjust positioning accuracy adaptively. Hence, this invention can be used for developing numerous personal, commercial, governmental and military cognitive location-based services and applications. Furthermore, the invented H-DSM technique can be used by cognitive wireless networks and devices to improve spe
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Laser-based Terahertz and Millimeter Wave Source

The invention relates to a method and a device for generating electromagnetic radiation in the terahertz and millimeter range, using a non-linear medium generating the indicated radiation by differential frequency generation within the laser resonator of a suitable laser, such as a VECSEL or a disc laser operating in two or more color modes. The invention further relates to novel decoupling structures used to this end for optimized decoupling and separating of the generated radiation from the op
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Method and Implementation for Information Exchange Using Markov Models

The replacement of secret keys is a central problem in key management. Typical solutions exchange handshaking messages, involve complex computations, or require the cooperation of trusted third parties. Disclosed herein is a key replacement method that exploits the randomness of Markov models to efficiently provide fresh keys to users. Unlike other methods, the proposed method removes the need for extra communications, intensive computation, or third parties. It is demonstrated that the proposed
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F-inverted Compact Antenna for Wireless Sensor Networks and Manufacturing Method

An F-inverted compact antenna for ultra-low volume Wireless Sensor Networks is developed with a volume of 0.024lambdax0.06lambdax0.076lambda, ground plane included, where lambda is a resonating frequency of the antenna. The radiation efficiency attained is 48.53% and the peak gain is -1.38 dB. The antenna is easily scaled to higher operating frequencies up to 2500 MHz bands with comparable performance. The antenna successfully transmits and receives signals with tolerable errors. It includes a s
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Wireless Communication Method and System for Transmission Authentication At the Physical Layer

The subject authentication scheme encompasses a large family of authentication systems which may be built over existing transmission systems. By superimposing a carefully designed secret modulation on the waveforms, authentication is added to the signal without requiring additional bandwidth. The authentication information (tag signal) is sent concurrently with data (message signal). The authentication is designed to be stealthy to the uninformed user, robust to interference, and secure for iden
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System and Method for Spatio-temporal-context Aware Interaction of Users with an Entity of Interest

A multifunctional interaction system which is capable of spatio-temporal context localization of users and of communication of audio/video streams to an entity of interest defined by the user, includes a communication domain supporting a predefined localization service, a server associated with the communication domain, client devices, and a dynamically changing context database which is customized in accord with the dynamics of interaction sessions of client devices with the server. The client
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Practical Method for Resource Allocation for QOS in OFDMA-based Wireless Systems

A data communication resource allocation for OFDMA based wireless systems supporting heterogeneous traffic is provided by allocating the rates to users subject to power/bandwidth constraints, according to a user selection metric and rate allocation based on traffic requirements and channel conditions. Thus, a proportionally fair rate allocation with minimum rate constraint to data sessions and short term rate guarantees to real-time sessions can be provided.
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Method for Fast Roaming in a Wireless Network

A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming
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Method and System for Source Authentication in Group Communications

A method and system for authentication is provided. A central node for issuing certificates to a plurality of nodes associated with the central node in a network is also provided. The central node receives a first key from at least one node from among the plurality of nodes and generates a second key based on the received first key and generates a certificate for the at least one node. The generated certificate is transmitted to the at least one node.
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Novel Topology Selection and Broadcast Method for Rule-based Link State Routing

An apparatus and method are provided for optimizing the link-state information that is to be broadcast in a routing domain of a communication network for QoS rule-based link-state routing. The routers include any device capable of implementing the routing primitives. The apparatus and method involve pruning the link-state information using local neighborhood information that has been discovered. The local link-state is pruned so that the QoS optimal paths are preserved for link-state routing. Pr
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Digital Image Compression By Resolution-adaptive Macroblock Coding

Disclosed is an image encoder that divides a digital image into a set of "macroblocks." If appropriate, a macroblock is "downsampled" to a lower resolution. The lower-resolution macroblock is then encoded by applying spatial (and possibly temporal) prediction. The "residual" of the macroblock is calculated as the difference between the predicted and actual contents of the macroblock. The low-resolution residual is then either transmitted to an image decoder or stored for later use. In some embod
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Matching with a Large Vulnerability Signature Ruleset for High Performance Network Defense

Systems, methods, and apparatus are provided for vulnerability signature based Network Intrusion Detection and/or Prevention which achieves high throughput comparable to that of the state-of-the-art regex-based systems while offering improved accuracy. A candidate selection algorithm efficiently matches thousands of vulnerability signatures simultaneously using a small amount of memory. A parsing transition state machine achieves fast protocol parsing. Certain examples provide a computer-impleme
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Large Format High Resolution Interactive Display

An interactive display device of a preferred embodiment includes a display surface and a touch interface associated with the display surface. A first LCD layer generates a dynamic parallax barrier and a second LCD layer generates stereoscopic images in cooperation with the first LCD layer. A light source backlights the first and second LCD layers. A preferred method for controlling an interactive stereoscopic display device provides two-dimensional content to be displayed by the second LCD layer
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Method and Apparatus for Sharing Traffic Information

A system that incorporates teachings of the present disclosure may include, for example, a communication device having a controller to receive from a system a broadcasted vehicle velocity, detect that a difference between a velocity of a vehicle carrying the communication device and the broadcasted vehicle velocity exceeds a threshold, and determine from a random policy whether to transmit the velocity of the vehicle to the system. Additional embodiments are disclosed.
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Transmit Opportunity Detection

The present application discusses, among other things, apparatus and methods for detecting and using a excess capacity on a wireless network medium. A method embodiment includes calculating a differential metric based on a first metric and a second metric for a primary network. The primary network can have a medium shared with a secondary network. The first metric can be based on a first distribution of traffic on the primary network and can correspond to absence of a perturbation of the medium.
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Device and Method for Non-contact Recording of Spatial Coordinates of a Surface

The invention relates to a device and a method for non-contact recording of spatial coordinates of a surface, comprising a sensor head (7) and a controller (13) connected to the sensor head (7), wherein the sensor head (7) is designed as a portable hand-held device, a projector (1) sand two cameras (2, 3). The controller (13) is also designed as a portable device, with an electrochemical energy source housed in the controller (13) or in the sensor head (7) for power supply to the sensor head (7)
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Antennas with Broadband Operating Bandwidths

Designs and operations of momentum antennas are presented. In some antenna designs, the terminating discontinuities are complementary with the opposite transmission line's discontinuity. In other antenna designs, the terminating discontinuities are intrinsically self-complementary.
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Flexible Antennas and Related Apparatuses and Methods

Embodiments of antennas over flexible substrates are described herein. Other embodiments and related methods are also disclosed herein.
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Microphone Devices and Methods for Tuning Microphone Devices

The present invention relates generally to microphone devices useful, for example, in hearing aid devices. The present invention relates more particularly to tunable microphone devices, and methods used to tune them. One aspect of the present invention is a microphone device that includes at least one microphone element. Each microphone element comprises a diaphragm suspended by a substrate; a solid electrolyte disposed on the diaphragm; an anode electrically coupled to the solid electrolyte; an
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Communication Interface for Sensory Stimulation

Techniques, apparatuses, and systems for interfacing multiple sensors with a biological system can include amplifying signals from respective sensors associated with an external device; modulating the amplified signals based on respective different frequency values; and summing the modulated signals to produce an output signal to stimulate a biological system.
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Set-top Box Peer-assisted Video-on-demand

A peer-to-peer (P2P) video-on-demand (VoD) system or method use a plurality of LP-enabled VoD set-top box (STB) peers in a pool for providing video content data to a requesting client peer in the pool. One other peer in the pool can be designated as a parent peer for downloading high priority playback content that is substantially immediately needed for playback display. Low priority pre-fetch content can be downloaded to the requesting client peer from another peer in the pool other than the pa
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Methods and Systems for Reducing Mac Layer Handoff Latency in Wireless Networks

In accordance with the present invention, computer implemented methods and systems are provided for reducing handoff latency in a wireless network. In response to detecting that a handoff is necessary, the present invention uses a selective scanning algorithm that includes the use of a channel mask and/or a caching algorithm for detecting one or more new access points.
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Antenna with Multiple Co-located Elements with Low Mutual Coupling for Multi-channel Wireless Communication

An antenna that has a number of co-located elements, with no (or very small) coupling between the various elements. The antenna may comprise one or more electric dipole elements, such as an electric tripole, co-located with one or more magnetic dipole elements, such as a magnetic tripole. The antenna has the property that although all of the electric and magnetic dipole elements are co-located, there is substantially no coupling between the elements. Some of the antenna elements may operate as t
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Systems and methods for correlating and distributing intrusion alert information among collaborating computer systems

Systems and methods for correlating and distributing intrusion alert information among collaborating computer systems are provided. These systems and methods provide an alert correlator and an alert distributor that enable early signs of an attack to be detected and rapidly disseminated to collaborating systems. The alert correlator utilizes data structures to correlate alert detections and provide a mechanism through which threat information can be revealed to other collaborating systems. The a
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Methods and Systems for Controlling Traffic on a Communication Network

Methods and systems for controlling traffic on a communication network are provided. In accordance with some embodiments, methods for controlling traffic on a communication network are provided, the methods comprising- receiving, at a processor in a receiver, a query message for permission to send a data flow to the receiver; sending a permission message from the receiver; defecting that at least one of a message and a data packet being sent to the receiver has been dropped; and causing the path
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Systems, Devices, and Methods for Continuous-time Digital Signal Processing and Signal Representation

Systems, devices, and methods for continuous-time digital signal processing and signal representation are disclosed. This includes a continuous-time analog-to-digital converter that is configured to receive an analog signal and convert it to a continuous-time digital signal without using a clock or any type of sampling. This A/D conversion can include a per-level representation and a per-edge representation of the analog signal to produce a digital signal. The digital signal can then be processe
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Systems and Methods for Wirelessly Receiving Data

In accordance with some embodiments,, receivers for receiving a wireless data transmission are provided, the receivers comprising at least one amplifier that receives an RF input signal and produces at least one amplified signal; a mixer that mixes the at least one signal to produce a mixed signal; a filter that filters the mixed signal to produce a filtered signal, a comparator that compares the filtered signal to a threshold voltage and produces a digital signal, a first pulse generate i that
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Apparatus and Methods for Processing Compression Encoded Signals

Apparatus and methods for processing compression encoded signals are provided. In some embodiments, a signal processing method is provided that includes receiving a subband of a compression encoded signal at a subband processor, generating envelope information regarding the subband of the compression encoded signal to provide changes in the dynamic range of the compression encoded signal for fixed-point digital signal processing, processing the compression encoded signal with a fixed-point compa
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Systems and Methods for Displaying Three-dimensional Images

Systems and methods for displaying three-dimensional (3D) images are described. In particular, the systems can include a display block made from a transparent material with optical elements three-dimensionally disposed therein. Each optical element becomes luminous when illuminated by a light ray. The systems can also include a computing device configured to generate two-dimensional (2D) images formatted to create 3D images when projected on the display block, by a video projector coupled to the
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Apparatus, Methods, and Computer Program Products Providing Dynamic Provable Data Possession

In one exemplary embodiment, a method includes: storing data for a file, organized as blocks, each having a portion of the file (301); and maintaining a skip list for the data (302). The skip list is an ordered tree structure having a root node, internal nodes and leaf nodes. Each leaf node corresponds to a block. Each node has a rank value corresponding to size of a subtree rooted at the node. The skip list employs a hashing scheme. The hash value of the root node and internal nodes is computed
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Reconfigurable Chamber for Emulating Multipath Fading

Disclosed is a compact reconfigurable channel emulator, which may be used to emulate severe fading environments and test wireless systems and subsystems for operation in severe channel environments. Examples include radios, coding schemes, diversity methods and antennas. In particular, the chamber is well suited to test hardware associated with wireless sensor deployments for these tend to be susceptible to severe fading scenarios. Moreover, the invention is significantly smaller than traditiona
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System and Method for Visualizing a Structure of Interest

A system. The system includes a computing device configured for communication with an imaging system and with a display device. The computing device includes a contour modeling module. The contour modeling module is configured for superimposing reference anchors on a cross-sectional image generated from 3D image data, for generating a line which connects the reference anchors, for sampling the 3D image data in a variable thickness plane defined by the connecting line, and for generating a contou
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System and Method for Real Time Asset Location and Tracking

A system for estimating the current position of an asset within a location that includes a transponder associated with the asset, a plurality of wireless interface devices provided within the location, and a central computer system in electronic communication with the wireless interface devices. The central computer system is adapted to: (i) identify a particular one or more of the wireless interface devices that have received a wireless signal from the transponder, and (ii) determine an estimat
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Sensor and System to Detect Bridge Scour

A system for detecting scour associated with a structure having a part thereof extending into a bed of material located under a body of water is provided. The system comprises a sensor unit buried in a portion of the bed of material located in proximity to the part. The sensor unit is structured to float to a surface of the body of water and automatically wirelessly transmit a message after being released from the bed of material in response to at least some of the portion of the bed of material
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Transparent Conformal Polymer Antennas for Rfid and Other Wireless Communications Applications

An optically transparent conformal polymer antenna and a method for producing the antenna from optically transparent conductive polymers. The method includes selecting an antenna design; providing an optically transparent conductive polymer material capable of being printed using an ink-jet printer device; and printing layers of the polymer in the desired antenna design pattern onto a substrate. The surface tension of the polymer solution is adjusted to allow the material to pass through a print
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Systems and Methods for Selecting Reconfigurable Antennas in Mimo Systems

A method allows reconfigurable multi-element antennas to select the antenna configuration in MIMO, SIMO and MISO communication system. This selection scheme uses spatial correlation, channel reciprocal condition number, delay spread and average Signal to Noise Ratio (SNR) information to select the antenna radiation pattern at the receiver. Using this approach, it is possible to achieve capacity gains in a multi-element reconfigurable antenna system without modifying the data frame of a conventio
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Mimo Antenna Arrays Built on Metamaterial Substrates

A magnetic permeability enhanced metamaterial is used to enhance the antenna array of a Multiple Input Multiple Output (MIMO) communication system. A rectangular patch antenna array is formed including a stack of a plurality of unit cells, where each unit cell includes an inductive loop of magnetic permeability enhanced metamaterials embedded in a host dielectric substrate. The use of such metamaterials permits the antenna arrays to be made smaller, and have less mutual coupling, when using a me
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Ystem and Method for 3-dimensional Display of Image Data

Disclosed is a system for a 3-dimensional display that includes at least one eyepiece having first and second eyepiece sockets, having a first display contained in said first eyepiece socket associated with a first eye, two eye cameras mounted such that a first eye camera tracks eye reference points of said first eye and a second eye camera tracks reference points of a second eye, a processor for providing overall control of said at least one eyepiece; a second display; and a main processor; sig
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Broadcast Latency Optimization in Multihop Wireless Networks

A system and methodology that can optimize practical performance by reducing broadcast latency and collisions in a multihop wireless network is provided. The system includes an optimization component that determines a schedule for transmitting and/or receiving messages at nodes in the network during one-to-all broadcasting, all-to-all broadcasting, and/or all-to-one collection. The schedule enables each node in wireless network to participate in broadcasting as soon as possible, such that, when
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Vehicular Information Systems and Methods

Disclosed is a method and system that receives sensor information from each of a plurality of sensors. Each sensor in the plurality is associated with a vehicle. The sensor information includes location coordinates of each vehicle in the plurality. The sensor information associated with each vehicle in the plurality then is translated to parking statistics information. In one embodiment, the translation is based on an aggregate of sensor information corresponding to the plurality of vehicles. Th
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Virtual Flow Pipelining Processing Architecture

A computer system for embodying a virtual flow pipeline programmable processing architecture for a plurality of wireless protocol applications is disclosed. The computer system includes a plurality of functional units for executing a plurality of tasks, a synchronous task queue and a plurality of asynchronous task queues for linking the plurality of tasks to be executed by the functional units in a priority order, and a virtual flow pipeline controller. The virtual flow pipeline controller inclu
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Method for the Operation of an Antenna Group Having a Plurality of Transmitters and a Plurality of Receivers and Associated Apparatus

The present invention relates to a method for the operation of an antenna group (1) having M>=2 transmitters and N>=2 receivers (3) for the digital beamforming. In the method, a coherent transmit signal is transmitted in a transmit-receive-cycle via each of the M transmitters (2) into an area to be monitored, and a coherent receive signal from the area is recorded by each of the N receivers (3) for each transmit signal so that M.N receive signals are obtained. To each receive signal, a combinati
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Digital beam forming using frequency-modulated signals

The present invention relates to a method for angular determination and/or for increasing the angular resolution or a detectable angular range when operating antenna groups using the technique of digital beam forming (DBF), as well as a device for carrying out the method. In the method, a measurement signal with a carrier signal and a frequency-modulated signal component are received via at least one antenna group directly or after reflection on one or several objects. The angle, at which the me
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System and Method for Virtual Server Migration Across Networks Using Dns and Route Triangulation

A first virtual server is moved from a first network location to a second network location without interrupting service to users of the first virtual server. The state and data of the first virtual server are copied and transmitted to the second network location to create a copy of the first virtual server. The first virtual server copy is then updated to duplicate the first virtual server and all connections or packets directed to the first virtual server are intercepted and directed to the fir
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System and Method for Injecting Sensed Presence Into Social Networking Applications

A method for injecting sensed presence into social networking applications includes receiving sensor data associated with a user, inferring a presence status of the user based upon analysis of the sensor data, storing the sensor data and presence status within a database, and sending the presence status to a social networking server to update the user's presence information for the social networking applications based upon the user's preferences.; A system for injecting sensed presence into soci
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Wireless Passive Radio-frequency Strain and Displacement Sensors

Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which
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Systems and Methods for Key Generation in Wireless Communication Systems

A system and a method for providing a secure wireless ad-hoc network in a wireless communication system having at least two transceivers coupled by a wireless transmission link are disclosed. The method includes receiving a data transmission at a first transceiver from a second transceiver, wherein the data transmission identifies a source of a signal in the data transmission and the signal is identified by a signal envelope; detecting a deep fade in the data transmission, wherein the first and
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Apparatus, Systems and Methods for Enhanced Multi-carrier Based Underwater Acoustic Communications

Advantageous OFDM-based underwater acoustic (UWA) apparatus, systems and methods are provided according to the present disclosure. In general, OFDM transmissions over UWA channels encounter frequency-dependent Doppler drifts that destroy the orthogonality among OFDM subcarriers. The disclosed apparatus, systems, and methods use a two-step approach to mitigate frequency-dependent Doppler drifts for zero-padded OFDM transmissions over fast-varying channels: (1) non-uniform Doppler compensation via
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Video Processing System Employing Behavior Subtraction Between Reference and Observed Video Image Sequences

An image processing method includes calculating sequences of motion labels from each of first and second sequences of images, each sequence of motion labels including motion label values indicating levels of motion activity in corresponding regions of the corresponding sequence of images. First and second behavior representations are calculated, each from the sequences of motion labels calculated from the respective image sequence, such that each region of each behavior representation represents
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Device for fastening radio-frequency identification transponder at e.g. container to identify and monitor transport cart containing object, has preparing device and mounting device arranged at common

The device (10) has a preparing device (20) i.e. boring machine, for producing a receptacle i.e. borehole, for a transponder in a material of an object e.g. wooden pallet (13). A mounting device (22) brings the transponder in the receptacle. The preparing device and mounting device are arranged at a common movable positioning element (18). The positioning element is movable by a drive (19). The transponder is fixed at the receptacle using holding units. The mounting device comprises a movable in
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A Method and System of Enhanced Performance in Communication Systems

A method of spatial modulation to identify a transmitter within a transmission array, wherein the transmitter has a unique bit sequence and defines a spatial component indicative of relative location is disclosed, comprising the following steps: receiving transmitted bits from the transmission array and identifying the unique bit sequence, the spatial component and a signal components; encoding the unique bit sequence and the spatial component by grouping the transmitters into transmitter groups
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Guidance, Navigation and Information System Especially Adapted for Blind Or Partially Sighted People

The present invention concerns an orientation, navigation and information system, especially adapted for blind or visually impaired people. It is essentially a system that allows blind or visually impaired people to access information usually made available only to public transportation users visually, through posters or informative signs, or through dynamic information screens of various nature.; It allows, first of all, the access to information from the outside or within private or public fac
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System and Method for Increased Observation

The invention relates to a system for increased observation, enabling the improvement of the information received by a user observing an event, said system comprising: a means for capturing images located at the same point, said means capturing individual images of the event; a processing means provided with storage means, for linking the individual captured images in order to obtain a single mosaic image, and for storing all of the images; a transmission means for transmitting the individual ca
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Analog System for Generating Quadrature Signals

The system comprises at least one injection-tuned oscillator (O1) and at least one analog multiplier (Mx1) with an output (Mx1s1) connected to the input (O1e) of said oscillator (O1) for supplying it with an injection signal (V inj) resulting from the multiplication of the signals present at the inputs of the analog multiplier (Mx1e1 and Mx1e2), one of which (Mx1e1) is connected to the first or only output (O1s1) of said oscillator (O1). Said injection-tuned oscillator (O1) is designed to genera
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Method for the Completely Adaptive Calibration of a Prediction Error Encoder

The method comprises a first step of initialization; a second step of reception and accumulation of block-size data samples, in which for each value received, one is added to the histogram accumulator associated with this value; a third step of analysing the histogram and determining the encoding option; a fourth step of analysing the histogram and determining the encoding table; a fifth step of generating a header with the encoding table determined for the prediction error encoder; in which the
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Housing for Microphone Arrays and Multi-sensor Devices for their Size Optimization

A sensor system being is located in an environment composed of a first medium, where waves propagate with a first phase velocity, the sensor system including at least one main enclosure and a sensor array with at least two sensors, said sensor array being arranged inside the main enclosure, wherein the space inside the main enclosure between the sensor array and the inner surface of the main enclosure is filled with a second medium, in which waves propagate with a second phase velocity, the seco
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Autocorrelation-Based Multi-Band Signal Detection

A receiver device for detecting a multi-band signal, the receiver device comprising a bank of autocorrelation units adapted for separating the multi-band signal into a set of autocorrelation signals, and a sampling stage arranged downstream the bank of autocorrelation units and adapted for sampling the set of autocorrelation signals to thereby select individual signal components for detection.
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Tof Range Finding with Background Radiation Suppression

A method for measuring time of flight of radiation comprises emitting modulated radiation (51) in response to a first modulation signal, projecting the modulated radiation (51) onto a scene (55), and receiving radiation, the received radiation comprising at least modulated radiation reflected by the scene (55). The received radiation (26, 27) is converted into a radiation induced electrical signal. The radiation induced electrical signal is mixed with a second modulation signal, thus generating
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Lens system for three-dimensional display applications

A lens system for a display system, the display system and a method, adapted for three-dimensional display applications are described. The lens system comprises a first lens array (1) adapted for focusing a light beam in a direction comprising a horizontal and/or a vertical component relative to a fixed plane, wherein the light beam is directed through the first lens array (1), a second lens array (2) and a third lens array (3), each adapted for being moved relative to the fixed plane and for co
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System and Method for Position Estimation

The present invention is related to a method for estimating the location of a target device in a wireless network, whereby the wireless network comprises a plurality of reference stations. The method comprises the steps of measuring with the target device a signal parameter of a set of signals received from the reference stations, - deriving an expression of the target device's location likelihood by linking the measured signal parameter values of the received signals to an empirical and continu
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Device and Method for Signal Detection in a TDMA Network

The present invention is related to a circuit (1) for detecting activity in a burst-mode receiver. The circuit is arranged for receiving an input signal (2) comprising a preamble. The circuit comprises a differentiator (11) for detecting signal transitions in the input signal (2) whereby the preamble comprises information on operating said differentiator (11). In a preferred embodiment, the information is a time constant. The circuit further comprises an integrator (12) arranged for being fed wi
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Centralized Authentication System

The present invention provides a method for centralized identity authentication of a user (20), for use in connection with a communications network, based on a network wide reputation for the user. The method comprises creating at least one online service account, e.g. a website account, for allowing the user to access at least one online service (21, 31) on the communications network, linking the at least one online service account of the user to a reputation account of that user, the reputatio
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Method and System for Analog Beamforming in Wireless Communication Systems

The present invention is related to a method of analog beamforming in a wireless communication system, whereby said system has a plurality of transmit antennas and receive antennas. The method comprises the steps of determining transmit beamforming coefficients and receive beamforming coefficients by : - determining information representative of communication channels formed between a transmit antenna and a receive antenna of the plurality of antennas, - defining a set of coefficients representi
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Integrated system comprising waveguide to microstrip coupling apparatus

The present invention provides an integrated system comprising an RF chip (1), an antenna (2) and a transition element for providing signal coupling between a waveguide (5) and a microstrip line (6). The transition element and the antenna (2) are integrated in a multilayer system (3). The antenna (2) and the RF chip (1) are each located at opposite sides of the multilayer system (3). It is an advantage of embodiments of the present invention that interference between chip (1) and antenna (2) is
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Method and Apparatus for Real-time/on-line Performing of Multi View Multimedia Applications

A method and apparatus for real-time/on-line performing of multi-view multimedia applications are disclosed. In one aspect, a method of computing a disparity value of a pixel includes computing from two input images a plurality of first costs for a pixel, each cost associated with a region selected from a plurality of regions a first type, the regions covering the pixel and being substantially equal in size and shape. The method also includes computing from the first costs a plurality of second
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Mimo Sphere Detection with Parallel Distributed Node Processing

The present invention is related to method for detecting a symbol transmitted over a communication channel in a multiple input-multiple output communication system by performing sphere detection. A parallel processing performing a distributed-greedy-algorithm for the tree search is proposed. It is based on a local minimization at each node of an increment of the Partial Euclidean Distance. Further the number of children expanded from a node is limited to a constant, independent from the constell
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Method for Resolving Network Contention

A method for resolving network contention in a wireless network having a plurality of communication devices is disclosed. In one aspect, the method includes determining a set of initial values of at least three parameters of a first device of the plurality, at least one of the at least three parameters being indicative of the transmit power of that first device. The method further includes determining, given the set of initial values, a gain measure obtainable by changing the set of initial valu
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Method for Generating a Data Block for Transmission Using a Cpm Scheme

A method for generating a data block for transmission using a continuous phase modulation scheme is disclosed. In one aspect, the method includes inserting payload data in the data block, the payload data having a plurality of payload symbols, each involving an state change in a continuous phase modulation waveform generated from the data block in one of two opposite directions. It may include inserting state compensation data in the data block for cancelling out the state changes, such that the
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Communication Device and Method

The present invention relates to a communication and interoperability device with at least one electronic peripheral apparatus (2), wherein the device includes a electronic processing circuit (6) connected to at least one connection interface (5) for at least one peripheral apparatus, characterised in that the device comprises: monitoring software (3a) for polling the connection of a peripheral apparatus and for determining the connection interface used on the communication device, software (3b)
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Method for Synchronising Video Streams

The invention relates to method or synchronising at least two video streams from at least two cameras having a common field of vision. The synchronisation method includes at least the following steps: acquiring (81) the video streams and storing the images constituting each video stream on a video storage medium; rectifying (83) images of the video streams based on epipolar lines; for each epipolar line of the video streams: extracting (84) an epipolar line in each rectified image of each video
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Method and System for the Efficient and Automated Management of Virtual Networks

The invention relates to a method for the automated management of the performance of at least one virtual network (214, 216, 218) consisting of a plurality of virtual nodes installed on physical nodes (202, 204, 206, 208) selected from among a set of physical nodes forming an infrastructure network (200). Said method includes the following steps for each virtual network (214): determining so-called load data related to a load state of at least one virtual node (2022, 2044, 2062, 2086) of said vi
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Method and System for Deploying At Least One Virtual Network on the Fly and on Demand

The invention relates to a method for generating, on the fly and on demand, at least one virtual network (402, 404, 406), adapted for a specific use, on a physical network (200), referred to as an infrastructure network, including physical nodes (204, 206, 208, 210), each of said physical nodes (204, 206, 208, 210) runs at least one network operating system, said method including the following steps: determining, on at least one computer device (202), referred to as a virtual network server, dat
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Electronic dispersion compensation system and method

The invention provides a system and method for an optical communication network to compensate impairments in the network to optimize system parameters, using electronic dispersion compensation (EDC) comprising a circuit for receiving two signals, representing amplitude and instantaneous frequency, and performing a full-field reconstruction of the signals. A dispersive transmission line circuit provides a coarse CD compensation of the reconstructed signals. An EDC circuit provides a fine impairme
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A reflective optical transmitter

A semiconductor optical amplifier (SOA) is used in a double pass configuration with one of the output ports followed by an attenuator, which is followed by a modulator with a reflective facet. The variable loss between the SOA and the modulator is optimised, so that the SOA can be operated in a highly saturated regime without distorting the modulated signal. The SOA is firstly saturated by the input carrier, (21) in Fig. 2, which has a constant power and hence does not introduce patterning of th
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Robust Routing of Data in Wireless Networks

A wireless network (1) comprises a base station (2) and sensor nodes (3). The base station (2) comprises a network interface (10), an application interface (11), topology control functions (12) a timer (13), and a buffer (14). Each sensor node (3) comprises a network interface (20), route control functions (21), processing functions (22), sensors (23), flood mechanism programs (24), tree mechanism programs (25), and data forwarding programs (26). The network operates by establishing a convention
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Femtocell Configuration Using Spectrum Sensing

An embodiment provides for the ad-hoc configuration of femtocells (104) using spectrum sensing for the selection of spectrum channels. In this embodiment, frequency bands that are not reserved by macrocells in a location (130) are determined (302), and spectrum sensing (206-220) is performed to determine communication channels (306) in unreserved frequency bands that are being used by other femtocells in range. In this manner, femtocells can be deployed and configured in an ad-hoc manner without
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System and Method for Measuring Optical Signal-to-noise Ratio

The invention provides a system and method for measuring optical signal-to-noise-ratio (OSNR) in an optical communication system. A channel filter is adapted to select one specific optical communication channel from a wavelength-division-multiplexing (WDM) optical communication system, wherein the channel comprises an optical signal carrying digital bit information and noise from associated optical power amplifiers in the system. At least one optical delay interferometer is adapted to measure at
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Radio Frequency Transponder System

A radio frequency transponder, including: a substrate; and at least one planar antenna on said substrate, said antenna having a shape determining a corresponding resonant frequency of said antenna; wherein said antenna causes a phase difference between backscattered signals generated in response to excitation of said antenna by orthogonally polarised interrogation signals at said resonant frequency, and said phase difference represents a code of said antenna.
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Radio Frequency Transponder

Information is encoded in a resonator/antenna structure, which may be interrogated in order to retrieve the information via radio frequency (RF) excitation. The resonator/antenna structure comprises a multiresonator including a plurality of substructures, and exhibits a plurality of resonances in the RF domain. Characteristic frequencies of the resonances depend upon the substructures, which may be modified in accordance with information to be encoded within the resonator/antenna structure. The
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Ditributed Turbo Coding and Relaying Protocols

This invention concerns distributed turbo coding and relaying protocols wireless relay networks. In particular, the invention concerns a method for relaying signals at a relay node, a method for processing signals at a destination node, a relay system and software to perform the methods. The wireless relay networks comprise a source node, a destination node and one or more relay nodes. At a relay node, the invention comprises the steps of receiving a signal from a first node; decoding the receiv
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Signal Method and Apparatus

Methods and apparatus for generating and processing a signal are disclosed. The signal may comprise a plurality of mutually orthogonal subcarriers constituting a plurality of bands. The signal may be either an optical or a radio frequency signal
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Band-notched Wideband Antenna

The present invention provides a wideband antenna (10) comprising: a substrate (13); a radiating element (12) supported on the substrate and coupled to a transmission feed-line (14); and a resonator (20) mounted in proximity to the radiating element and occupying an area that is covered at least in part by the radiating element. In embodiments of the invention, the resonator (20) is configured to resonate at a predetermined frequency within an ultra-wideband spectrum so as to suppress transmissi
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Multifunctional Antenna

A multifunctional antenna is described comprising a substrate having a radiating element provided on a first side thereof. A first ground plane is provided in proximity to the radiating element and a transmission line is coupled to the radiating element and configured to link the radiating element to a transmitter and/or receiver circuit. A second ground plane is provided, which is associated with the transmission line, and a switching means is provided for selective electrical isolation of the
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Multifunctional Antenna

A multifunctional antenna comprises a radiating element and a microstrip feed line coupled to the radiating element. The microstrip feed line comprises a conductive strip disposed on a first side of a substrate and a ground plane disposed on a second side of the substrate, extending beneath the conductive strip. At least one slot is provided in the ground plane, which extends at least in part beneath the conductive strip. At least one switch is provided in the ground plane and is configured to s
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Reconfigurable Antenna

A reconfigurable antenna comprises two or more mutually coupled radiating elements and two or more impedance -matching circuits (56, 58) configured for independent tuning of the frequency band of each radiating element. In addition, each radiating element is arranged for selective operation in each of the following states: a driven state, a floating state and a ground state.
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Pervasive Display System and Method for Operating a Pervasive Display System

A pervasive display system, including at least one display device for presenting content, is characterized in that the system further includes a content creator being configured to annotate content with contextual presentation goals that specify when, where, and how said content should be presented, a context component being configured to sense and manage context information about humans, objects and/or places as well as about said display devices, and a content distribution and scheduling compo
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A Receiver of Multiplexed Binary Offset Carrier (MBOC) Modulated Signals

A receiver for receiving a navigation signal comprising a carrier modulated by a code modulation function of a given code rate and further modulated by a composite sub-carrier modulation function having first and second components with two different rates both of which are different to the code rate, the receiver comprising processing means arranged to: generate a first estimate of delay based on the code modulation only; generate a second estimate of delay based on the first component of the su
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Method and Apparatus for Beamforming in Multiple Userscommunicaiton Using Multiple Antennas

PURPOSE: A beam forming method in a multi antenna multi user communication system and an apparatus thereof are provided to simplify and integrate a system design, thereby overcoming performance deterioration due to quantization. CONSTITUTION: A beam forming method in a transmitting device of a multi antenna multi user communication system comprises a controller(106), a beam former(108-1~108-K) and transmitting antennas(116-1~116-K). The controller groups codebook indexes that a codebook includes
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Apparatus and Method for Beamforming Based on Generalized Eigen Analysis in a Multiple Input Multiple Output Wireless Communication System

PURPOSE: A beam forming device using an eigen analysis in a multi input/output communication system and a method thereof are provided to perform multi input/output communication of multi users without interference between terminals. CONSTITUTION: A beam forming device using an eigen analysis in a multi input/output communication system and a method thereof include a calculator(232) and a transmission beam former(218). The calculator generates the relational expression in the beam forming vector
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Scalable Bus-based On-chip Interconnection Networks

The present disclosure generally relates to systems for routing data across a multinodal network. Example systems include a multinodal array having a plurality of nodes and a plurality of physical communication channels connecting the nodes. At least one of the physical communication channels may be configured to route data from a first node to two or more other destination nodes of the plurality of nodes. The present disclosure also generally relates to methods for routing data across a multino
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Method, System, Server and Client for Transmitting Media Stream Data

A method, system, server and client for transmitting media stream data are provided. The method includes: dividing all clients in a conversation into a first conversation group and a second conversation group; retransmitting the received media stream data to the client in the first conversation group; sending the media stream data to the client in the second conversation group through the client in the first conversation group. The system includes a PoC server which comprises: dividing module wh
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Communication Terminal and Information System

A communication terminal and an information system are provided. The communication terminal includes an image/video collecting and generating module (1) to collect and generate stereo image/video data, a communication module (2) to transmit and receive stereo image/video data, and an image/video display module (3) to display the stereo image/video. The information system includes a stereo image/video information center; the center includes a relay of stereo image/video information to interact wi
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Power line communication apparatus and method for controlling the same

The embodiments of the present disclosure provide a PLC apparatus and a method for controlling the PLC apparatus. The method includes: acquiring a working state and a network state of the PLC apparatus; and switching the working state of the PLC apparatus in accordance with the working state and the network state of the PLC apparatus. The PLC apparatus includes: a working state acquiring unit adapted to acquire a working state of the PLC apparatus; a network state acquiring unit adapted to acqui
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A Method and a System of Video Communication and a Device for Video Communication

A method, a system, and a device of video communication are provided. A sub-picture in a synthetic picture corresponding to each audio stream received is marked. Position information of each audio stream is obtained according to a position of each sub-picture in the synthetic picture. The audio stream and the corresponding position information are sent to a terminal. The terminal processes an audio signal according to the received position information of the audio stream, so that the audio strea
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Displaying device, terminal of displaying device, and display method

A displaying device, a terminal of the displaying device, and a display method are provided. The displaying device includes: a calculating unit, configured to calculate the active display area that shows the interface content and calculate an image area occupied by a display interface; a creating unit, configured to create image data in the image area and write the image data in the displaying unit; and a displaying unit, configured to display the corresponding information based on the image dat
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A Video Encoding/decoding Method and a Video Encoder/decoder

A video coding method, a video decoding method, a video coder, and a video decoder are disclosed herein. A video coding method includes: performing base-layer coding for the first view, and extracting prediction information of at least one layer by combining a locally decoded first view and a second view; performing enhancement-layer coding for prediction information of at least one layer respectively; and multiplexing the enhancement-layer codes and the base-layer codes of the first view to obt
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Video Encoding Decoding Method and Device and Video Codec

A video encoding decoding method and device and a video codec are provided. The video encoding method includes the following steps. A first view picture is basic-layer encoded as a reference view picture, prediction information is extracted in combination with a second view picture, and the second view picture is re-created. A residual value is calculated according to a re-created second view picture and the original second view picture. When the residual value is greater than a threshold, both
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Telepresence System, Method and Video Capture Device

A telepresence system, a method and a video capture device are provided. The system includes the video capture device, a video display device, an audio capture device, an audio play device and a video audio communication device. Video and audio captured by the local video capture device and the local audio capture device respectively are transmitted to the remote meeting room by the said video audio communication device, and the video and the audio are played by the video display device and the
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Systems and Methods for Providing Opportunistic Security for Physical Communication Channels

Systems and methods of providing opportunistic security for physical communication channels are disclosed. One disclosed method is for opportunistic secure communication on a main channel between a sender device and a receiver device when an eavesdropper device is listening on an eavesdropper channel. This example method includes transmitting, in a first time period in which signal quality on the main channel is better than signal quality on the eavesdropper channel, symbols that are randomly se
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Communication System, Transmission Device, Reception Device, Communication Method, and Program

The present invention relates to a communication system capable of performing efficient data transmission in HDMI(R) and the like, a transmission apparatus, a receiving apparatus, a communication method, and a program. An HDMI(R) source 53 determines whether or not an HDMI(R) sink 61 can receive a sub-signal on the basis of VSDB of E-EDID. When the HDMI(R) sink 61 can receive the sub-signal, the HDMI(R) source 53 adds a sub-signal to pixel data of a main image composed of pixel data whose number
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Communication Control System, Mobile Communication Switching Device, Subscriber Information Management Device, and Communication Control Method

In a communication control system 1, in an acquisition step of acquiring routing information before a line is set, a first mobile communication switching device 100 generates an acquisition request signal of routing information, which includes calling/called number specifying information and call information, and transmits the acquisition request signal to a subscriber information management device 200. The call information includes calling number information specifying a calling-side mobile com
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Device for wavelength conversion of optical signal wavelength into another wavelength, has laser light source, which emits optical signal of wavelength

The device has laser light source, which emits an optical signal (S1) of a wavelength (Lambda1), and another laser light source (L2), which emits another optical signal (S2) of another wavelength (Lambda2). An optical filter (10) is provided for central wavelength of the latter laser light source. The optical semiconductor amplifier (SOA) has a length greater than 1.5 millimeter. An independent claim is included for a method for conversion of amplitude-modulated laser radiation of a wavelength i
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Automated Voice-operated User Support

An information device for voice-operated support of a user includes a storage medium, a knowledge database, a processing unit, an input device, a recording component, a transcription component, and an ontological analysis component. A signal is detected by the input device and stored by the recording component via the processing unit in the storage medium. The signal is transformed into a corresponding text by the transcription component via the processing unit and stored in the storage medium.
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Predistortion of Amplifier Input Signals

Described herein are devices, methods, and techniques related to predistortion of amplifier signals based on an operating condition. Predistortion techniques are described that mitigate or eliminate the effects of variable operating conditions, including nonlinear effects, on amplified signals. Nonlinearities may be mitigated by compensating at a baseband signal prior to amplification, generally using scaling and a static characteristic that is valid for a broad range of operating conditions.
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Communication System and Redundant Configuration Management Method

A redundant device stores configuration information, including IP addresses and routing information used for transferring user data, and session information for each device in use. Then, in the event that a problem occurs with any of the devices in use, the redundant device continues the transfer of user data in place of said device in use based on the stored configuration information and the session information corresponding to the device in use where the problem occurred.
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Enhancement of Data Transmission Rates for HSDPA Systems

Background The enhancement of data transmission rates is relevant to high speed downlink packet access (HSDPA) systems, such as the system shown in Figure 1. In particular, there is growing interest in data rate improvements for Femtocells, for which high data rates and complexity are delivered for localised distribution. New standards are actively evolving to allow these new technologies to be integrated with improved performance. Currently, there are limitations because the signal processing
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Inometrix Inc.

Current commercial dispersion measurement equipment is incapable of stable, accurate and low cost characterization of short length optical fibers/waveguides. Technology developed by Michael Galle and his research team at the University of Toronto changes this by introducing not just one but two new dispersion characterization technologies. These new patent pending technologies will be exclusively licensed to an Ontario start-up company (Inometrix Inc.), founded by the Principal Investigator Mic
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Opportunistic WIFI Mesh Infrastructure for Broadband Wireless Internet

Mesh networking is a way to route data, voice and routing instructions between Wi-Fi nodes. It allows for continuous connections and reconfiguration around broken or blocked paths by “hopping” from node to node until the destination is reached. Mesh networks differ from other networks in that the component parts can all connect to each other via multiple wireless hops vs wired connections to internet backhaul. Traditional MESH networks have latency and bandwidth issues that limit and/or hind
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Reflector Antenna with Improved Performance

Researchers at the University of British Columbia have developed a simple, practical, and low cost antenna design for effective transmission and reception of communication signals. The antenna design employs a spherical reflector and a feed that is positioned pointing substantially downward, where the relative orientation of the reflector and feed are adjustable. This design offers several advantages. The spherical reflector used in this antenna design provides for the opportunity of multiple fe
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Adaptable Channel Testbed for Investigating On-the-move Wireless Nodes (ACTION)

ACTION is a comprehensive, real-time platform used to analyze the performance of wireless networks with stationary or mobile nodes. A test-bed or “fictional” approach is essential due to the challenge and cost associated with live field-testing to capture network performance for high-speed (> Mach 4) network elements. ACTION provides a controlled simulation environment to model mobile nodes and the cellular-like network area through which they move. This approach allows for the real-time col
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High-fidelity Quantum Logic Operations Using Linear Optical Elements

Techniques for high fidelity quantum teleportation include receiving an input photon representing a qubit. Ancilla photons are generated in a particular ancilla quantum state chosen to reduce a rate of error below a threshold error rate. The ancilla and the input photon are combined to populate output channels. A number of photons representing logical value 1 are measured in a subset of the output channels. A particular output channel is determined based on the measured number of photons. A tele
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Quantum Memory for Photonic Qubits

This invention, in one aspect, is a method for performing quantum logic operations using linear optical elements with much smaller errors than in earlier methods. As shown in Fig. 1, the proposed quantum logic devices have two logical inputs, each of which is a quantum bit (qubit) represented by a single photon. The value of a qubit is determined by which of two possible paths each photon occupies. The logic devices also have two output qubits, represented in the same way by two photons. In addi
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Apparatus and Method for Quantum Mechanical Encryption for the Transmission of Secure Communications

An apparatus and method were developed that permit the transmission of secure communications. The invention uses quantum mechanical effects to establish nonlocal correlations between a pair of photons. This is analogous to an automatic encryption code that exists at only one location and is immediately destroyed after either of the photons is detected. This latter feature also provides a means for detecting any unauthorized tap on the transmission line.
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Multi-line Towed Acoustic Array Shape Measurement Unit (SMU)

An acoustic array comprising a plurality of nodes attached to two or more lines. Some or all of the nodes include an emitting transducer and a receiving hydrophone, and the balance include only a receiving hydrophone. Each emitting transducer has associated electronics comprising a high fidelity amplifier and a stored waveform input to the operational amplifier to drive the amplifier, the output of the amplifier exciting the transducer to emit a chirp having a hyperbolic frequency modulated (HFM
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Digital Nulling Pulse Inductive Metal Detector

Pulse induction metal detector (PIMD) antennas come in two basic types. First is a single transmit and receiver coil. The second use separate transmitter and receiver coils. Two basic problems exist with existing PIMD’s. First is the high kickback voltage of the transmitter coil, which temporally blinds the receiver coil from the amplifying metal target signals near the turn-off time of the transmitter coil. Second is that the protection circuitry typically has a delay time that also temporall
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Switched Coil Receiver Antenna for Metal Detector

Pulse induction metal detector (PIMD) antennas come in two basic types. First is a single transmit and receiver coil. The second use separate transmitter and receiver coils. Two basic problems exist with existing PIMDs. First is the high kick-back voltage of the transmitter coil which temporally blinds the receiver coil from the amplifying metal target signals near the turn-off time of the transmitter coil. Second is that the protection circuitry typically has a delay time that also temporally b
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Chloride Ion Sensor

The United States is replacing aging concrete infrastructure and simultaneously developing the tools and techniques to monitor new infrastructure as it ages. Currently, trained personnel base most infrastructure monitoring on individual sensor measurements or periodic visual inspection. Sensors are not distributed throughout the structure being monitored. They are used only for discrete general measurements, mostly due to economic limitations. These approaches do not detect degradation until it
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Smart Aggregates: Distributed Sensor Suite for Remote Infrastructure Monitoring

Physical and analytical sensors need the ability to communicate via wireless connections to various forms of readout systems. Many applications for sensors are in remote and embedded locations where wired or optical connections are not practical or economical. Sensors in these applications need to be small, rugged and long life. Support platforms need to be able to adapt to a large variety of sensors including pressure, temperature, conductivity and analytical. The Johns Hopkins University Ap
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Dual Frequency Scanning Harmonic Radar for Detection and Identification of Concealed Metallic Weapons and Electronics

A radar system that can rapidly detect and reliably identify targets such as concealed weapons and electronics. Persons either walking through a fixed portal/doorway or walking or congregating in a foyer, entranceway or other open area can carry the targets. The systems needs to be able to achieve a high probability of detection with a low false alarm rate and automatically discriminate between weapons, electronic assemblies and clutter. The Johns Hopkins University Applied Physics Laboratory
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Wide Bandwidth Variable Gain Optical Amplifier for Optical Communications Systems

Optical communications systems can suffer from fast (<= millisecond time frames) power variations that can reach across the entire signal spectrum. These type of variations can lead to excessive communications errors over these links, both when the amplitude variations occur over a shorter time scale than the bandwidth of the decision circuits designed to determine the presence of a mark or a space, or when the undesirable amplitude modulation exceeds the amplitude range of these decision circui
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Remotely Directed Vehicle Inspection System

Personnel operating check points, border crossings, toll barriers, parking garages, traffic stops and others are subject to many different types of hazards. They include explosives, drugs, weapons, chemical, biological and radiological agents, smugglers, contraband and others. A method is needed to require the occupants of the vehicle to be remotely directed to examine the vehicle while the security officer is at a safe distance. A researcher at the Johns Hopkins University Applied Physics La
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Prime-Rational Frequency Synthesis Method and Frequency Synthesizers

Frequency synthesizers are an essential element to modern navigation and communications systems, as they provide the means to align and synchronize distributed transmitters and receivers with high signal purity. The degree of synchronization and signal purity is directly proportional to the quality of service offered by optical data networks and wireless communications. When the quality of service is compromised, the economic return of the transmission infrastructure cannot be optimized. Frequen
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Broadband Clock Recovery Circuit Using YIG Oscillators

JHU/APL inventors have designed a Broadband Clock Recovery Circuit using YIG Oscillators with novel features compared to similar technologies currently circulating in this market. The fields of application for this invention include companies in Telecommunications and those involved in Test and Measurement Markets for universal broadband clock recovery for test sets. Typical clock recovery circuits operate over a very narrow frequency range, centered on one of the SONET standard data rate fre
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Submarine Speed and Depth Communications Enabling Technologies and At-Sea GPS Reception Demonstration

The Johns Hopkins University Applied Physics Laboratory (JHU/APL) has an ongoing interest in providing two-way submarine communications (at speed and depth) and developing buoyant cable antenna (BCA)-enabling technologies. JHU/APL envisions submarine speed and depth communications capabilities that are compatible with existing submarine systems and subsequently has invested IR&D funds, along with Navy funding, in the development of enabling technologies. A High Frequency Structure Simulator (HFS
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Media Access Control (MAC) Protocol for neXt Generation (XG) Radio System

This technology allows multiple radios to sense the radio frequency (RF) spectrum in order to determine the frequency, and other dimensional parameters, to be used for transmitting signals between the nodes. When a user of an XG radio requests to make a transmission to another XG radio, the protocol uses statistics of frequency occupancy, allowing a radio to make use of frequency agility to find a frequency bin and to transmit in it if no other emitting source is occupying it and none is expecte
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Simultaneous Bi-directional Digital Data Transfer Over a Single Transmission Line

Telephone systems have used “two-to-four-wire hybrids” for years. A telephone hybrid is a multi-winding transformer that connects the two wires of the receiver and the two wires of the transmitter to a single wire pair. It allows cancellation of the local voice signal so that the distant signal may be heard more clearly. The Johns Hopkins University Applied Physics Laboratory has restructured the method for transmitting digital information between two nodes simultaneously in both directio
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Serial and Ethernet Over-The-Horizon (SOTH/EOTH) Communication System

Overview: The Johns Hopkins University Applied Physics Laboratory (APL) has developed the Serial and Ethernet Over the Horizon SOTH/EOTH Communication System. This system can transparently replace a wired point-to-point data link with a wireless satellite communication (SATCOM) link. The SOTH/EOTH system provides a modular "plug-and-play" SATCOM capability that requires no modification to the interface or software of the original wired system. This invention instantly transforms local hard-wired
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High Altitude Remote Probe (HARP)

Winged aircraft and most lighter-than-air airships, or tethered aerostats are limited to the lower altitude with denser atmosphere, thereby limiting their horizon coverage. Further, they require substantial support and are not generally on station for long periods (days or months) due to crew limits, weather vulnerability, and/or equipment reliability. Satellites are expensive to deploy and, although their horizon coverage is great, their distance to the objects of surveillance to communications
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Mechanism for Aiming Lasers with High Precision Anti-jamming Applications

Among the critical challenges facing optical communications network developers is the security of very high bandwidth optical data links. Desired capabilities include essentially global access to multi-satellite, multi-site terminals that must be allocated and managed to insure quality of service, multi-level security, and virtual private networks, thereby necessitating authentication in an internet protocol networking environment. Therefore, apart from the degrading effects of weather, effectiv
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Method for Adaptable, Distributed and Synchronized Signal Observation

Due to the overwhelming demand for consumer wireless communications, the Chairman of the FCC recently announced a new spectral deregulation policy creating a market for secondary allocation of the current commercial radio spectrum. This APL invention is a system intended for signal observation in multiple dimensions (time, frequency, space, etc.) to determine occupancy and availability of those waveform resources. Essentially, the APL system first enables a licensee to characterize the condit
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Integrated, All Photonic Lighting, Heating, Cooling and Communications for Buildings

Unlike much longer wavelength microwave systems such as cellular and cordless technologies, optical and millimeter bands do not penetrate building structures as thoroughly. The Johns Hopkins University Applied Physics Lab has invented a new approach for use of optical techniques in an integrated manner for all the principle human environment controls within building structures (heating, cooling, lighting, and communications). A means for effective distribution of coverage for optical and mill
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Remote Monitoring and Relaying for Wrist Watch Alarm

Hearing loss can be a problem for many segments of the population. As the population gets older and the ability to hear high pitch sounds decreases, it may not always be possible to hear a watch alarm or cell phone ringing. It is common to see people use watch alarms to remind them to take medications. Often, if the person is active or the watch is under clothing, it is not possible for the person to hear the alarm. The detailed invention details an electronic device that would be worn close
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Spiral Resonator-Slot UHF Antenna

resonator-slot antenna is configured to have a spiral of a conducive sheet material having at least one turn and extending along an axis with an elongated antenna slot helically wound around the axis in at least one full twist. Patent Status: U.S. patent(s) 6897822 issued
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High Temperature Light Guide

Researchers at the Johns Hopkins Applied Physics Laboratory (APL) have created a high-temperature optical fiber assembly for sensing applications within harsh or high-temperature environments. These pressure-sealing and chemically resistant light guides have been made using both quartz and borosilicate glass. The fiber assemblies can be made to a specified length with varying bundle sizes up to 0.040 inches in diameter. Over 100 of these assemblies have been reliably produced by a commercial man
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Crosslink Transceiver for Integrated Navigation and Communication Among Multiple, Distributed Spacecraft

A significant number of Earth and space science goals rely on the successful deployment and operation of distributed spacecraft technology. In conjunction with fundamental science, distributed spacecraft military missions have been identified as important capabilities to maintain national interests. Realizing the advantages of distributed spacecraft systems, however, entails considerable complexity in system design and implementation. It is not simply that multiple spacecrafts may be deployed th
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Open Autonomy Kernel (OAK), an Architecture for Mode-Identification and Reconfiguration of Control systems Model-Based

Model-based reasoning systems have been relying upon a single model on which a single reasoning engine operates. A single inference engine physically removes the intelligence from the control system when used to control geographically large systems such as ships, computer networks, power grids and transportation networks. This has the drawback of requiring the transmission of raw data to the inference engine which increases the bandwidth requirements, reduces survivability and limits scalability
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Integrated Optical Mono-pulse Tracking System for Full Duplex Optical Communication

Conventional technology relies on a lens or array of lenses to cause incident energy to be aligned with the central detector. Tracking detectors are arranged around a central detector in close proximity and only receive energy as a result of misalignment. This misalignment causes a decrease in the energy incident on the main channel. Current technology does not allow for the use of multiple detecting elements of different frequencies in the main channel due to the non-wavelength dependent nature
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Cable-to-House Wideband Wireless Link and Relay

There is a need to provide an information distribution system having greater networking and information bandwidth, reduction of obsolescence costs, increases in mobility, lower human electromagnetic exposure, and reduced costs of services. It is, therefore, an aspect of the present invention to provide a system and method for distributing information using wideband wireless networks. The foregoing aspects of the present invention are realized by a system for the bi-directional distributio
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X-Band Solid State Power Amplifier (SSPA)

A high-efficiency solid state power amplifier (SSPA) for specific use in a spacecraft is provided. The SSPA has a mass of less than 850 g and includes two different X-band power amplifier sections, i.e., a lumped power amplifier with a single 11-W output and a distributed power amplifier with eight 2.75-W outputs. These two amplifier sections provide output power that is scalable from 11 to 15 watts without major design changes. Five different hybrid microcircuits, including high-efficiency Hete
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Integrated Adaptive Antenna Array and Adaptive Locally-Optimum Detection Processor

Adaptive Antenna Arraying (AAA) and Adaptive Locally-Optimum Detection (ALOD) are two complementary signal-processing techniques use for detecting weak signals (such as radio or radar) in the presence of strong man-made interference or jamming. The system is primarily designed for incorporation within systems using Direct Sequence Spread Spectrum signals, such as Global Positioning System (GPS) signals. In a preferred embodiment the inventive system is incorporated within a conventional GPS rece
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Controlled Beam Steering Using Two-Beam Coupling for Optical Routing Applications

Optical routing applications involve the re-direction of an optical beam from one path direction to another in a well-controlled, rapid manner. One possible means of re-direction involves the use of two-beam coupling in photorefractive polymer films. Novel polymer photorefractive systems are attractive candidates for beam steering since two-beam coupling in many polymer composites is very efficient and temporarily fast. In two beam coupling, the direction of the beam diffraction is a function
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Planar Magnetic Field Antenna

Most metal detectors (electromagnetic induction (EMI) sensors) or nuclear quadrupole resonate (NQR) use a loop antenna to create a magnetic field in the environment. The magnetic field interacts with the objects. For trasient EMI metal detectors, the magnetic field creates eddy currents in the metal object which is then detected by some suitable magnetic receiver or sensor. For NQR sensors that are designed for explosive detection, the magnetic field interacts with the explosive and causes a sma
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Hybrid Inflatable Antenna

hybrid inflatable dish antenna combines a fixed parabolic antenna and feed with an inflatable annulus to greatly increase the dish surface area on orbit. This provides a simple, more reliable, and low cost method for large dish deployment. The fixed portion of the dish also provides modest high gain capability in the event of a deployment failure. Applications for this invention are in the fields of Spacecraft Communication, Radar Systems, Ground-based Mobile Communication, Aircraft/Balloon Com
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"SPARCL" High Bandwidth Space-to-Ground Data Transmission System Concept

An optical communication system using a high altitude tethered balloon 10 that operates above most clouds and atmospheric turbulence. An optical communication system includes a balloon 10 with an optical communication payload 30, a fiber optic cable attached to the tether 12, an automated winch system 14, and a ground station 28. The balloon 10 is designed for sustained flight at, and recovery from, high altitude using the automated winch system 14. An acquisition, tracking and pointing (ATP) sy
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Networked Sensor System (NESSY)

A networked sensor system that simultaneously acquires, processes, and transmits sensor data under the control of a central processing unit. The system includes sensors connected to sensor processing modules. The sensor processing modules are serially coupled together and to the central processing unit by a fiber optic network. The central processing unit can change the sensor sampling rate by changing a global clock rate, can describe the number and layout of sensor processing modules and their
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Floating GPS Cylindrical Slot Antenna

-------------------------------------------------------------------------------- Floating GPS Cylindrical Slot Antenna Reference#: P01325 -------------------------------------------------------------------------------- This invention enhances the capabilities of the Buoyant Cable Antenna (BCA). An electrical prototype of a GPS antenna, suitable in size and shape for mounting on the end of a BCA has been developed. It’s suitability for submersion in salt water combined with the abili
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A Portable Rapidly Erectable Discone Antenna

Technology Status: United States Patent 5,608,416 --- Champion, et al.March 4, 1997 Market Need: This invention is lightweight, portable, quickly assembled, wideband, discone antenna for high-frequency ground wave communication. The disk portion of the antenna is formed of telescoping spokes, and the cone portion is formed of separate retractable wire elements. Disassembled, the antenna can be carried in a backpack. It can be assembled in less than ten minutes to achieve non-fading, none-line-of
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Coherent Radar Digital Data Collector and Sampling Technique for Noncoherent Transmitter Radars

Radar Digital Data Processor has been developed which produces I (phase) and Q (quadrature) data obtained by sampling the receiver IF of a radar with a single A/D converter. A sampling technique was developed for this application to allow operation with radars employing a noncoherent transmitter such as a magnetron. Representative field results are presented employing spectral analysis proving the viability of the sampling technique for Doppler processing.
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High Speed Imaging Television System

The present invention provides a unique approach to solving the problem of dead-time between the forming of images in a video camera system by the multiplexing of the outputs of a plurality of cameras together to form an interlaced composite video signal which enables high speed viewing of a dynamic event.
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Sharp Mode-Transducer Bend for Overmoded Waveguide

sharp, mode-transducing bend structure for circular TE01 overmoded waveguide systems is formed by first transducing from circular TE01 waveguide into multiport rectangular TE10 waveguide, performing the desired bend, and then transducing from the multiport rectangular TE10 waveguide back into the circular TE01 waveguide.
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Local Area Communication Network

The invention is a communications network for providing full-duplex data transfer between any two network interface units on a one-to-all-others contention bus. Network interface units (NIUs) send and receive data signals on outgoing and incoming links, respectively, which are connected to junction boxes which couple the incoming link connected to one network interface unit to the outgoing links of only the other NIUs. The data signals have source address codes and destination address codes appl
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Microelectromechanical Wireless/RF Components

Description Microelectromechanical System (MEMS) devices provide many advantages over conventional devices because of their unique actuation, miniature and integration features. The device sizes are usually in the range from 10mm to 1mm and the thickness of moveable parts on the chips usually is in the order of submicrons. Therefore, the mass of moveable parts is very small and requires very small force to move. This is appropriate for electromagnetic-wave applications since waves have no
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Parylene Micromachined Piezoelectric Acoustic Transducers on Silicon Substrate

Description A new type of micromachined acoustic transducers, parylene micromachined piezoelectric acoustic transducers, has been developed and tested for use as microphones and microspeakers. The parylene diaphragms have about 100 times lower stiffness than silicon nitride, and considerably increase the sensitivity at audio range comparing with that of conventional device made by silicon nitride diaphragm. Also, the parylene diaphragm is almost free from the residual stress problem that conside
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Infrared Communication System (MFS-31331)

Abstract: The MSFC transceiver was developed to serve as a data-communication link between the RS-232-stan-dard serial communication port of a PC running Microsoft Windows and a remote infrared transceiver that can operate at a baud rate greater than or equal to 4 MHz. The PC-to-transceiver communication is 115.2 kilobits per second, and the infrared communication is 4 megabits per second. The transceiver includes a commercial, off-the-shelf infrared transceiver module designed according to
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New Manufacturing Devices for Improved Fiber Optic Assemblies (GSC-13644)

Abstract: Fixture for Adhesive Curing in Open-Cell Ovens This device holds a termination and optical fiber firmly in place during elevated temperature epoxy bonding in an open-cell oven. Until adhesives are fully cured,terminations must not move or slip from their position on the fiber. When inserted into an oven cell, the fixture centers and controls the depth of the fiber optic assembly within the cell cavity. The fixture also can be used to hold thermocouples, allowing them to provide more a
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Fiber Optics-Distributed Sensor System (TOP1-468)

Abstract: The DSS determines the Bragg reflectivity and wavelength at every point along an optical fiber by measuring the interference of the light reflected from the Bragg gratings with the light from a reference reflector. The reflected spectrum of any section of fiber can then be computed. Shifts in this spectrum provide an accurate measurement of the strain in that section of fiber. Currently, sections can be as short as 1.5 inches and range more than 20 feet. A plot of the Bragg gratings a
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Analog-to-Digital Conversion Methods and Apparatus Enabled by Active and/or Passive Variable Delay Transmission Lines

Background Technology scaling adversely affects most parameters relevant to analog design, and ADCs are no exception. To achieve a high linearity, high sampling speed, and high dynamic range with low supply voltages and low power dissipation in ultra-deep submicron silicon technology is a major challenge. Moreover, as scaling continues, the intrinsic gain keeps decreasing, indicating that the device performance for precision analog devices decreases with continued scaling. Also, the explosive gr
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Unidirectional Proxy Re-encryption with Applications to Secure Distributed Storage

The invention consists of three public-key encryption schemes that support �proxy re-encryption�. In a typical public-key encryption scheme, a sender (Alice) may encrypt messages to a recipient Bob under Bob�s public key, such that only Bob may decrypt (and learn the message contents) using his secret key. In our proxy re-encryption schemes, however, Bob may optionally �delegate� one or more other individuals (e.g., Charlie) and allow them to temporarily decrypt his messages. To achiev
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Fair Asynchronous Random Access with Probabilistic Antenna Allocation in MIMO Multihop Networks

This invention is the first asynchronous multiple input/multiple output media access control (MIMO MAC) protocol that counters starvation and provides fairness. The invention exploits antenna selection and uses standard network utility maximization to find the number of used antennas per link in a given interference scenario. It devises a MAC protocol that allocates antennas via a probabilistic estimation methodology that (i) incorporates multi-level carrier sensing to estimate the number of int
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A new communications protocol for personal two-way radios

The Ramrod protocol is a new method for users of two-way radios to contact each other without the problem of finding an open channel or losing a signal. The FCC places strict restrictions on digital/data/non-voice communications in the FRS/GMRS bands which preclude traditional techniques for dealing with channel selection and contention issues. The Ramrod Protocol provides a decentralized automatic channel selection that ensures maximum utilization of physical channels and remains entirely withi
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Scalable, Rapidly Tunable Wavelength Selective Ring Resonator

Introduction Wavelength-division multiplexing (WDM) is a capacity increasing technology used in fiber-optic communications to carry different optical signals in a single optical fiber. Optical add-drop multiplexers are required at either end of a fiber for WDM. Current technologies switch too slowly, only switch over a limited wavelength range, are not compatible with silicon processing, do not scale well (both by number of fibers and wavelengths), and have other problems limiting their usefulne
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Influencing the orientation of chromophores to increase the opticelectric effect

Introduction The electro-optic effect, important for optical communications and quantum optics, occurs in materials that alter their refractive index in the presence of an electrical field. One of the more important specific electro-optic effects is known as the Pockels effect. Materials exhibiting the Pockels effect show a change in the refractive index that is linearly proportional to the electric field. The alignment of dipolar chromophores enhances this effect. Traditional methods of perform
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A Common-Gate Low Noise RF Amplifier for Ultra High Frequencies

Introduction Typically the first stage of an integrated receiver is a low-noise amplifier (LNA); hence, it is one of the most critical RF building blocks. An LNA is required to provide enough gain to suppress the noise contributions of subsequent blocks such as mixers. Noise figure is the most important performance parameter of an LNA since the overall noise figure of a receiver depends highly on it. However, tradeoffs among noise figure, gain, linearity, power consumption and stability complica
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Calibrated Low-Loss Phase Shifter with Negative Resistance Circuit and Sigma-Delta PLL for Multiple-Antenna Receivers

Introduction Variable Phase Shifters are used in many applications such as adaptive smart-antenna receivers. In adaptive antenna receivers, antenna paths are linearly combined in an RF stage after being adjusted in both amplitude and phase. Variable-gain low-noise amplifiers and variable phase shifters are used to adjust the amplitude and phase of each received signal, respectively. Due to a lower noise figure and zero dc power dissipation, passive phase shifters are more attractive than their a
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Frequency and phase measurements using the Morlet transform

Introduction Telecommunication systems designed for Bluetooth or other standards deal with transmitted and received signals in the radio frequency (RF) range. Modulation methods and frequency-hopping techniques are employed to optimize access for multiple users. These communication architectures create RF signals whose frequency contents vary significantly in a short time window and whose phase changes have a strong effect on the correct decoding of the received signals. While many test methods,
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Auto-Tuning Amplifier

Introduction In wireless communications and wireless products, architectures can be complex and space-consuming due to the need for circuitry that receives signals from multiple bands. System complexity and increased size leads to higher costs; thus, design improvements that save space and decrease complexity are valuable. Technology description Researchers at the University of Washington have developed an amplifier that is capable of locking its tuning to a reference frequency. Thus, the same a
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Multilevel Modulation for Free Space Optical (FSO) Communications and Error Correction Methodology

Introduction Wireless optical links, or free space optics (FSO), enable point-to-point, high-speed communication with low installation costs and high levels of security, and they are especially useful in situations where fiberoptics are impractical. Unfortunately, this technique suffers from signal scattering and attenuation during certain weather conditions—such as rain, fog, or smog—that can deteriorate or even sever the connection. More universally robust methodologies would better positi
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Error Correcting Sigma-Delta Modulation Decoding

Summary Conventional sigma-delta analog-to-digital conversion (ADC) systems may be significantly enhanced by using a recently developed novel design approach. The technique involves instrumenting an ADC’s modulator subsystem with an observation circuit to provide quantized estimates of the modulator’s state values. This observation circuit provides a limited precision estimate of the modulator state values (delay stages), but leaves the modulator’s input/output relationship
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A Microconcentrator and Microfilter for Suspensions such as Blood

Summary Background: In healthcare, chemical analysis, environmental testing and other fields it is useful to separate particulate substances that are suspended in a fluid. For example separating cells from body fluids. So far, these techniques have typically required substantial capital equipment that can be both expensive and bulky, thus limiting where and when the separation can take place. Novel technology: The technology provides a microfluidic filter and concentrator that is cap
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Devices and Methods for Improving the Injection of Liquid Samples in Microfluidic Systems

Summary Principal Investigator: Max Narovlyansky, Graduate student, Department of Chemistry and Chemical Biology, Harvard University Background: Separation and detection of substance in fluids require injection of a plug of sample fluid into a separation column. Chip-based injections of samples for chemical and biological analysis have traditionally relied on open channel geometries like double-T and double-L methods to define the injection zone or upon isoelectric focusing (IEF), also calle
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Improved Metal Complex Chemical Precursors for Atomic Layer Deposition (ALD) and Chemical Vapor Depostion (CVD) using Bicyclic Guanidines

Summary Continued improvements in semiconductor technologies rely heavily on advanced material compositions such as high-k dielectrics, low-k dielectrics, and electrically conductive metal nitrides. These materials enable the continued progression of Moore’s Law, allowing ever-smaller components to be integrated onto a microelectronic chip. In current device fabrication facilities, vapor deposition is a preferred method for making these materials, allowing precise control over material un
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Embedded Haptics in Cell Phone Dialing

Introduction Handheld devices such as cellphones and PDAs have been increasing in complexity over the last few years. These devices can now handle large amounts of data, but the avenues for inputting data are severely limited. A more flexible channel for entering data into handheld devices would allow users to take advantage of their expanding capabilities. Technology description This invention describes a new user interface for small handheld devices that relies on the sense of touch (haptics)
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Mechanically Controllable Microwave Phase Shifters

Introduction Researchers at the UW have developed a low-cost microwave phase shifter that will be a key component of the ground station antenna for the proposed high-speed satellite based internet connection. The designs use a low-power electro-active polymer (EAP) as an actuator. Technology description Electro-active polymer actuators are low-cost and low-power devices suited for microwave applications. Unlike military phased-array antennas which are designed to detect missiles, these proposed
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Multilevel Modulation for Free Space Optical (FSO) Communications and Error Correction Methodology

Introduction Wireless optical links, or free space optics (FSO), enable point-to-point, high-speed communication with low installation costs and high levels of security, and they are especially useful in situations where fiberoptics are impractical. Unfortunately, this technique suffers from signal scattering and attenuation during certain weather conditions—such as rain, fog, or smog—that can deteriorate or even sever the connection. More universally robust methodologies would better positi
...

Auto-Tuning Amplifier

Introduction In wireless communications and wireless products, architectures can be complex and space-consuming due to the need for circuitry that receives signals from multiple bands. System complexity and increased size leads to higher costs; thus, design improvements that save space and decrease complexity are valuable. Technology description Researchers at the University of Washington have developed an amplifier that is capable of locking its tuning to a reference frequency. Thus, the same a
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Novel Measurement of Intermodulation Distortion (IMD) in Ferrite Circulators

BACKGROUND The rapid expansion of wireless communications and the development of mobile phone technology have resulted in a market requirement for large capacity communication systems. Wideband Code Division Multi-Access (WCDMA) is considered to be promising technology to meet this requirement. Ideally, the base station of a WCDMA system should handle signals over a very wide frequency range with minimum distortion. Any change of the antenna load condition in base station WCDMA can cause intermo
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Phone for Blinds and Illiterates

Phone for Blinds and Illiterates’, a patent pending technology, provides a convenient method for dialing ,programming and storing telephone numbers equally beneficial for a common, illiterate, aged, visually handicapped and physically challenged person.
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Global Qualitative Flow Path Modeling for Local State Determination (MSC-22618)

The technology supports reconfigurable models needed for analysis and simulation of industrial process automation where operations change the active flow paths in the system. The technology can be used to validate advanced process automation designs and software, where the active system structure changes during asynchronous interactive dynamic simulation. The technology can be used to analyze and predict global effects of local control actions and other events on the plant in various modes, whet
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Breakthrough in Combining/Dividing Radio Frequency/Microwave Power (MFS-31186)

In the past, methods to divide a waveform had inherent design constraints that limited high-efficiency techniques. This invention provides 50 to 60 percent efficiency compared to the 10 percent efficiency now achieved in non-pulsed circuits. This invention has contributed an important approach to solving battery life problems. While several different types of circuits are being studied that may address the same issues, this invention is unique by providing high-efficiency power amplification at
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Planar waveguide grating device having Controlled Polarization Dependent Sensitivity and Method of Manufacturing thereof

Solution / invention summary : Method of manufacturing that controls efficiently the effects of polarization dependent loss (PDL) and polarization dependent lambda (PDλ). Advantages / benefits : - The Echelle grating device is much smaller than other commercial technologies like the ones based on AWG; - Cheap to produce (up to 100 devices on a single waffle); - Has the necessary precision and throughput for chemical/biological applications; Potential applications : - Critical in tele
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Monolithic Photodiode Array with Impedance Match

High-bit-rate optical fiber networks and photonic microwave applications currently rely on photodiodes to serve as optical-to-electrical (O/E) converters. In such high performance, high-speed applications the O/E converters must exhibit high 3db bandwidth as well as a large saturation photocurrent. Traditionally, these performance constraints have necessitated the design of a photodiode with small carrier transit times and low capacitance. However, this traditional design leaves the photodiod
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Shape-controlled Silver Nanoparticle Ink (“ArgentInkTM”)

New Market Opportunity: Silver nanoparticle inks have applications in a wide number of fields across the electronics, physics, chemistry and biomedical fields. The optical absorption and fluorescence characteristics of the silver nanoparticles are critical to their functionality in all applications. The control of the shape and dimension of the silver nanoparticles, within a tight range, and the ability to programmably change the target size and shape of the silver nanoparticles in an aqueousba
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