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| Number | Title | Issue Date |
| 8000274 | Versatile system for transceiver noise reduction in a time-division duplexing wireless network A system for suppressing transmission channel noise in a signal transmission/reception device—particularly a time division duplex (TDD) wireless communications device—is provided. The system provides one or more shunt elements, instantiated at some point along t... | 08/16/2011 |
| 7929469 | Method and hybrid circuit for attenuating near-end crosstalk in a bidirectional signal transmission The present invention relates to a method for attenuating near-end crosstalk between a remote received signal and a locally transmitted signal in a bidirectional signal transmission wherein said method comprises the step of producing an analog automatic feedback-dri... | 04/19/2011 |
| 7365577 | Noise waveform generator with spectrum control A waveform generator for generating a desired waveform is provided, including a noise kernel configured to store a plurality of samples from a predetermined waveform, the plurality of samples being assigned to a plurality of memory blocks; and an address arrangement... | 04/29/2008 |
| 7353175 | Apparatus, method, and program for speech synthesis with capability of providing word meaning immediately upon request by a user A word meaning explanation request to a word in document data, which is output as speech, is input from a user instruction input unit. When the word meaning explanation request is input, a text analysis unit analyzes already output document data, which is output as ... | 04/01/2008 |
| 7327998 | System and method of providing a geographic view of nodes in a wireless network A geographic view rendering tool receives geographic location data for nodes in a wireless network and renders a geographic view displaying the nodes at their corresponding geographic locations. The geographic view may be displayed overlaying a digital map. The geog... | 02/05/2008 |
| 7319770 | Method of processing an acoustic signal, and a hearing instrument A method of processing an acoustic input signal into an output signal in a hearing instrument includes converting the acoustic input signal into a converted input signal, and applying a gain to the converted input signal to obtain the output signal. According to the... | 01/15/2008 |
| 7312721 | Data collector for an automated meter reading system The invention includes an electronic utility meter, a data collector/meter and a method for communicating data in an automated meter reading system. The inventive method includes communicating data with a network and a first electronic utility meter, and communicati... | 12/25/2007 |
| 7301476 | Dynamic self-configuring metering network A dynamic self-configuring system for collecting metering data comprises a collector meter. The collector meter scans for meters that are operable to directly communicate with the collector and registers such meters as level one meters. The collector transmits instr... | 11/27/2007 |
| 7284179 | Window based stall avoidance mechanism for high speed wireless communication system Instead of using a fixed size window, the invention will calculate the window size based on the receiver's capacities and configured system parameters. Moreover, this invention modifies operations regarding how to shift the transmission window at the transmitter and... | 10/16/2007 |
| 7278081 | Optical transport network frame structure with in-band data channel and forward error correction An optical transport network data frame structure is configured to provide an in-band data channel. The in-band channel data is contained in the data frame space that would otherwise be allocated to forward error correction (“FEC”) bytes. Consequently, the provi... | 10/02/2007 |
| 7263074 | Voice activity detection based on far-end and near-end statistics Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is me... | 08/28/2007 |
| 7262709 | System and method for efficient configuration in a fixed network automated meter reading system Meters are configured using either a program update method or a meter update method. In the program update method, meters associated with a specified configuration program are identified and configured with updated parameters. In the meter update method, a specified... | 08/28/2007 |
| 7254412 | Data transmission method and radio system The invention relates to a data transmission method and a radio system that comprises a first (260) transceiver and a second transceiver (264) that are in radio contact with each other. The first transceiver (260) comprises means (500, 504 | 08/07/2007 |
| 7239250 | System and method for improved transmission of meter data The system includes a number of first meters, which are typically battery powered transmit only devices. The system includes a number of two-way meters, which are operable to both transmit and receive data. The first meters transmit their data to the collector eithe... | 07/03/2007 |
| 7236929 | Echo suppression and speech detection techniques for telephony applications Various methods and apparatus are described for implementing effective echo suppression in a wide variety of telephony system architectures. These methods and apparatus include broadband and multi-band techniques for speech detection, estimation of near-end transmis... | 06/26/2007 |
| 7224981 | Speech recognition of mobile devices Speech recognition in mobile processor-based devices may be improved by using location information. Location information may be derived from on-board hardware or from information provided remotely. The location information may assist in a variety of ways in improvin... | 05/29/2007 |
| 7212502 | Method and apparatus for dynamically adapting telephony analog loss based on channel content A method is provided for introducing analog loss to an information-bearing signal being transmitted to or from end-user terminal equipment over a communication system such as a cable network The method begins by establishing a communication path to the terminal equi... | 05/01/2007 |
| 7190680 | Apparatus and method of realizing link access control protocol for IP multicasting packet transmission in a mobile communication network Disclosed is a method of realizing a link access control protocol for IP M/B packet transmission in a mobile communication network. The method of the invention comprises the steps of: receiving by an LAC of a BTS/BSC an Internet IP M/B packet transferred via a BSC/P... | 03/13/2007 |
| 7190194 | Active hybrid transformer circuit having a replica driver In an active hybrid transformer circuit connected to both transmit and receive sides, a current driver is connected to a transmission path circuit through a common connection point of a load resistor and a replica resistor while a replica driver is connected to the ... | 03/13/2007 |
| 7187906 | Method and system for configurable qualification and registration in a fixed network automated meter reading system A dynamic self-configuring system for collecting metering data comprises a collector meter. The collector meter scans for meters that are operable to directly communicate with the collector and registers such meters as level one meters. The collector transmits instr... | 03/06/2007 |
| 7176807 | System for automatically enforcing a demand reset in a fixed network of electricity meters Methods and systems of enforcing a demand reset in a meter that communicates via a wireless network. When billing data is received by a server, it is accompanied by a demand reset counter. The counter is compared to a counter stored on the server. If they received c... | 02/13/2007 |
| 7177416 | Channel control and post filter for acoustic echo cancellation An acoustic echo canceller comprising an adaptive filter, a post filter, and an adjustable filter. The adaptive filter receives a reference signal and a near-end signal, cancels a portion of the echo in the near-end signal using the reference signal, and provides an... | 02/13/2007 |
| 7170425 | System and method for creating multiple operating territories within a meter reading system The present invention enables multiple operating territories to be defined, named, and managed within a meter reading system. Each operating territory may correspond to a geographic sub-section of the meter reading system that is regulated by a particular regulatory... | 01/30/2007 |
| 7165028 | Method of speech recognition resistant to convolutive distortion and additive distortion A speech recognizer operating in both ambient noise (additive distortion) and microphone changes (convolutive distortion) is provided. For each utterance to be recognized the recognizer system adapts HMM mean vectors with noise estimates calculated from pre-utteranc... | 01/16/2007 |
| 7164659 | Adaptive gain control based on echo canceller performance information A system and method for provide a stable gain from an adaptive gain control device in a signal path. An echo canceller is also located in the signal path, and is used to provide performance information regarding losses in the signal. This performance information is ... | 01/16/2007 |
| 7161528 | Device and method for the suppression of pulsed wireless signals The invention relates to a method of suppressing pulsed signals in particular of DME or TACAN type present in the radio signals received (Ue) by a radio-frequency receiver, characterized in that the reception frequency band of the receiver is divided into frequency ... | 01/09/2007 |
| 7154867 | Echo reduction This invention provides a technique to reduce echoes not adequately attenuated by echo cancellers during initial periods of voice communication. Signals transmitted across communication networks are often reflected back to the caller resulting in echo. Echo cancelle... | 12/26/2006 |
| 7155006 | Method and apparatus for outbound wave subtraction using a variable offset amplifier A method and apparatus for outbound wave subtraction using a variable offset amplifier is described. The method includes calibration of a bi-directional signaling circuit in order to calculate one or more offset codes for cancellation of an outbound wave within a bi... | 12/26/2006 |
| 7149228 | Method for changing the route of a data transfer connection and for increasing the number of connections over a data transfer link A method for changing a data transfer rate on a communications connection, wherein information is processed using a processing method at a first point of the communications connection. The processed information is transferred to a second point of the communications ... | 12/12/2006 |
| 7145474 | Dynamic self-configuring metering network A dynamic self-configuring system for collecting metering data comprises a collector meter. The collector meter scans for meters that are operable to directly communicate with the collector and registers such meters as level one meters. The collector transmits instr... | 12/05/2006 |
| 7142106 | System and method of visualizing network layout and performance characteristics in a wireless network A system for visually detailing the layout of a wireless network and for providing performance statistics regarding the network. Graphical diagrams are generated in accordance with a request wherein the diagrams illustrate nodes and data collectors in the wireless n... | 11/28/2006 |
| 7139393 | Environmental noise level estimation apparatus, a communication apparatus, a data terminal apparatus, and a method of estimating an environmental noise level A level of a sound signal including a voice signal and an environmental noise signal is detected and a level (power level) is sampled in response to a clock signal. It is detected whether the presently sampled level increases from the previously sampled level. An en... | 11/21/2006 |
| 7133425 | Communication system A method and apparatus is disclosed for facilitating high-speed data communication. In one embodiment a receiver is configured to include error correction coding in an interleaved environment to increase data transmission rates. In one embodiment the signal mapping ... | 11/07/2006 |
| 7126494 | Remote access to electronic meters using a TCP/IP protocol suite An electronic meter incorporates a TCP/IP protocol suite and an HTTP server to provide two-way access to the meter data. Alternatively, the TCP/IP protocol suite may be incorporated into a gateway serving multiple meters connected through a power line or wireless tw... | 10/24/2006 |
| 7110445 | Oversampled clip-shaping The present invention provides an apparatus, system and method of peak-to-average reduction of an oversampled signal for a digital communication system. Peak detection 504 and width measurement 504 are advantageously combined in which a peak portion or... | 09/19/2006 |
| 7092516 | Echo processor generating pseudo background noise with high naturalness An echo processor includes an echo suppression amount decider which compares a state of an outgoing input signal to be sent including an echo with a state of an incoming input signal and calculates an echo suppression amount based on the comparison, a time-frequency... | 08/15/2006 |
| 7092365 | Voice and data exchange over a packet based network with AGC A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 08/15/2006 |
| 7072831 | Estimating the noise components of a signal Enhanced estimation of the noise component of a signal is accomplished by using a plurality of filters. Each filter provides an estimate of a minimum sample in a sample set that includes a plurality of signal samples. A comparator, coupled to the plurality of filter... | 07/04/2006 |
| 7065466 | Attenuator test system System for testing attenuators by a flatness and standing wave ratio tests which includes a vector network analyzer (VNA) adapted to be coupled to a device under test (DUT) and which provides an input stimulus signal for the DUT and, when certain conditions are sati... | 06/20/2006 |
| 7039181 | Consolidated voice activity detection and noise estimation Methods and apparatus compensating for background noise associated with a transmitted signal. In a first embodiment, an adder combines an echo estimate with the the transmitted signal to form a processed signal, a noise reduction circuit uses a background noise esti... | 05/02/2006 |
