Patents
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
08/1997
08/19/1997US5659548 Communication control apparatus
08/19/1997US5659546 Wideband frequency signal digitizer and method
08/14/1997WO1997029611A1 A method and apparatus for determining an optimal communications channel without loss of channel messages on a current communications channel
08/14/1997WO1997029559A1 A network protocol for wireless broadband-isdn using atm
08/14/1997WO1997029550A1 Digital wireless speaker system
08/14/1997WO1997029435A1 Parallel processor
08/14/1997CA2244925A1 A network protocol for wireless broadband-isdn using atm
08/14/1997CA2244191A1 Digital wireless speaker system
08/13/1997EP0621998B1 Method and apparatus for the formatting of data for transmission
08/13/1997CN1157073A Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems
08/13/1997CN1157069A Wireless communication system for reliable communication between group of apparatuses
08/13/1997CN1156931A Asynchronous multiport controlling method in single system of remote security administration system
08/13/1997CN1156929A Error detection apparatus for in transmission system
08/12/1997US5657464 Data transfer circuit for use with a base unit or a handset of a telephone system
08/12/1997US5657420 Variable rate vocoder
08/12/1997US5657419 Method for processing speech signal in speech processing system
08/12/1997US5657358 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or plurality of RF channels
08/12/1997US5657356 Control signal detection method with calibration error and subscriber unit therewith
08/12/1997US5657354 Planar approximating method for computing the log-likelihood ratio optimal signal metric of each component code decoder in 8-PSK block coded modulation systems
08/12/1997US5657346 Transmission line driver test integrity circuit
08/12/1997US5657342 Adaptive data rate packet communication system
08/12/1997US5657333 Method and apparatus for error-control coding in a digital data communication system
08/12/1997US5657325 Transmitter and method for transmitting information packets with incremental redundancy
08/12/1997US5657317 Hierarchical communication system using premises, peripheral and vehicular local area networking
08/12/1997US5656646 Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids and their use
08/06/1997EP0788262A2 Combined equalizer and decoder
08/06/1997EP0788261A1 Signal quality detection in an equaliser/receiver for use in a baseband-two-wire-modem
08/06/1997EP0788255A2 Radio telephone having burst error protected synchronisation
08/06/1997EP0788254A2 Data structure, data communication method, apparatus and communication terminal apparatus
08/06/1997EP0788242A1 Radio receivers and methods of operation
08/06/1997EP0787386A2 Sectorized communication system and methods useful therefor
08/06/1997EP0632911A4 Error detector circuit for receiver operative to receive discretely-encoded signals.
08/06/1997CN1156369A Timing playback device and diversity communication device
08/05/1997US5655215 For sending a message to a mobile station in a cellular communication system
08/05/1997US5655068 Point-to-multipoint performance monitoring and failure isolation system
08/05/1997US5654989 Method and apparatus for symbol timing tracking
08/05/1997US5654695 Multi-function network
07/1997
07/31/1997WO1997027706A1 Channel quality management in a cable telephony system
07/31/1997WO1997027686A1 A method for frame quality detection and a receiver
07/31/1997WO1997027679A1 A method and arrangement for minimizing skew
07/31/1997WO1997027550A2 Communication system with multicarrier telephony transport
07/31/1997DE19615057C1 Distortion criterion derivation arrangement from demodulated quadrature amplitude signal
07/31/1997CA2757542A1 Communication system with multicarrier telephony transport
07/31/1997CA2757383A1 Communication system with multicarrier telephony transport
07/31/1997CA2757201A1 Communication system with multicarrier telephony transport
07/31/1997CA2690127A1 Communication system with multicarrier telephony transport
07/31/1997CA2243975A1 A method and arrangement for minimizing skew
07/30/1997EP0786880A2 Communication system and transmission station with error detection and retransmission
07/30/1997EP0786183A1 Transmission system with improved symbol processing
07/30/1997EP0786171A2 Concealment method and arrangement and reproducing apparatus provided with the concealment arrangement
07/30/1997EP0786135A2 Method of and system for interleaving real-time files
07/30/1997CN1155965A CDMA mobile communication method, system, and mobile station equipment
07/30/1997CN1155950A Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code
07/30/1997CN1155793A Dual mode radio subscriber unit having diversity receiver apparatus and method therefor
07/30/1997CN1155792A Method for controlling diversity receiver apparatus in radio subscriber unit
07/29/1997US5652760 Error rate measuring apparatus
07/24/1997WO1997026767A1 Method and apparatus for transmitting an outbound message in a two-way messaging system
07/24/1997WO1997026738A1 Process for the time managing of a multiplex bus according to norm arinc 629
07/24/1997WO1997026726A1 Method and system for communication over multiple channels in a spread spectrum communication system
07/24/1997WO1997026709A1 Electronic messaging system and method
07/24/1997DE19630391C1 Two-stage data detection method esp. for receiver in communication system
07/23/1997EP0785644A1 Method and apparatus for data transmission between two stations
07/23/1997EP0784893A1 Hierarchical communication system providing intelligent data, program and processing migration
07/22/1997US5651027 Non-instantaneous disconnection switching system
07/22/1997US5650999 Voice over data communication system
07/17/1997WO1997025793A1 Data transmission method and equipment for encoding a signal
07/17/1997WO1997025788A1 Robust method and apparatus enabling multi-mode wireless optical communication
07/17/1997WO1997025786A1 Message fragmenting in a time diversity radio system
07/17/1997WO1997025784A1 Ofdm system and ofdm apparatus
07/17/1997WO1997025100A1 Adaptive, performance-optimizing communication system for communicating with an implanted medical device
07/16/1997EP0783804A1 Multiple band radio
07/16/1997CN1154755A Recording medium, data transmission method and apparatus, and data reproduction method and apparatus
07/16/1997CN1154627A Device for correcting error of digital video machine by using 1 bit to erasing signals
07/16/1997CN1154613A Data processing device for frequency-modulation multi-channel broadcast
07/16/1997CN1154554A Method for recording (sending)/reproducing (receiving) data, apparatus thereof, and data recording medium
07/15/1997US5648992 In a communications system
07/15/1997US5648991 Sampling phase synchronizing apparatus and bidirectional maximum likelihood sequence estimation scheme therefore
07/15/1997US5648986 Receiver in digital radio communication device with selective equalization
07/15/1997US5648969 Reliable ATM microwave link and network
07/15/1997US5648955 In a time division multiple access communication system
07/10/1997WO1997024866A2 System and method for testing acoustic modems with semanticallly encoded waveforms
07/10/1997WO1997024850A1 Method and apparatus for decoding an encoded signal
07/10/1997WO1997024849A1 Method and apparatus for symbol decoding using a variable number of survivor paths
07/10/1997WO1997024848A1 A method for identifying data transmission rate, and a receiver
07/10/1997WO1997024843A2 Transmission acknowledge using sequence numbers
07/10/1997WO1997024830A1 Routine testing parity maintenance
07/10/1997WO1997024829A1 Concatenated error detection coding and packet numbering for hierarchical arq schemes
07/10/1997WO1997024828A1 Multi-rate and multiple-modulation format data receiving apparatus and method of deinterleaving data
07/10/1997WO1997024827A1 High-penetration transmission method for a radiocommunication system
07/10/1997CA2240723A1 Routine testing parity maintenance
07/09/1997EP0783218A2 QAM modulator using an array of QPSK modulators
07/09/1997EP0782800A2 Detection of defective speech frames in a receiver of a digital speech communication system
07/09/1997CN1154190A Non-transparent data transmission in a digital telecommunications system
07/09/1997CN1154017A Digital radiocommunication receiver
07/08/1997US5646935 Hierarchical quadrature frequency multiplex signal format and apparatus for transmission and reception thereof
07/04/1997CA2192401A1 Receive antenna diversity for a packetized transmission system
07/02/1997EP0782292A2 Receiver which ensures the proper separation of convolutionally encoded, multiplexed signals
07/02/1997EP0782291A2 Information transmission system with a function to diagnose an information signal
07/02/1997EP0782277A2 Speech frame disabling circuitry for protection against burst errors of interleaved TDMA frames
07/02/1997EP0782275A2 Method and apparatus for eliminating interference using transmission delay and code multiplexing in digital radio system