Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 1 - Arrangements for detecting or preventing errors in the information received
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
11/1997
11/06/1997DE19713059A1 Time diversity method for digital radio communication
11/05/1997EP0805573A2 Method for measuring modulation parameters of digital quadrature-modulated signal
11/05/1997EP0805572A2 Error detection and error concealment for encoded speech data
11/05/1997EP0804838A2 Network multicasting method using arq techniques for preventing unnecessary retransmissions
11/05/1997EP0804836A1 Method and apparatus for the formatting of data for transmission
11/05/1997EP0545001B1 Failure detection in a redundant duplex system
11/05/1997CN1164153A Apparatus and method for regulating and flutter eliminating of index on network
11/04/1997US5684893 Image signal processing apparatus
11/04/1997US5684849 Digital circuit for detecting coincidence of two successive words of incoming serial data and a method thereof
11/04/1997US5684840 System for eliminating the affected by transmission errors in a digital stream
11/04/1997US5684839 Apparatus for adjusting sample points based upon measured intersymbol interference
11/04/1997US5684838 Receiving device for sampling data bits at a preferred time
11/04/1997US5684791 Data link control protocols for wireless ATM access channels
11/04/1997US5683432 Adaptive, performance-optimizing communication system for communicating with an implanted medical device
10/1997
10/30/1997WO1997040593A1 Code-rate increased compressed mode ds-cdma systems and methods
10/30/1997WO1997040592A1 Multi-code compressed mode ds-cdma systems and methods
10/30/1997WO1997040588A1 Method and apparatus for interference rejection with different beams, polarizations, and phase references
10/30/1997WO1997040582A1 Parallel concatenated tail-biting convolutional code and decoder therefor
10/30/1997CA2252382A1 Multi-code compressed mode ds-cdma systems and methods
10/30/1997CA2251843A1 Method and apparatus for interference rejection with different beams, polarizations, and phase references
10/29/1997EP0804001A2 Self-healing network, method for transmission line switching thereof, and transmission equipment thereof
10/29/1997EP0803999A2 Demodulator device for data carried by subcarriers
10/29/1997EP0561917B1 Process for transmitting additional information with an a.m. radio signal
10/29/1997CN1163515A Error detecting circuit based on variable threshold value of signal quality for digital receiver
10/28/1997US5682405 Ones density monitor
10/28/1997US5682395 Method and apparatus for correcting and decoding a sequence of branches representing encoded data bits into estimated information bits
10/28/1997US5682377 Transmission system for data cells in a local network
10/28/1997US5682148 Paging system with message numbering prior to transmission
10/23/1997WO1997039551A1 An improved technique for jointly performing bit synchronization and error detection in a tdm/tdma system
10/23/1997WO1997039433A2 Method and apparatus for real-time ionospheric mapping and dynamic forecasting
10/23/1997WO1997031433A3 Method and apparatus for dynamically selecting the length of mobile station burst communications on the reverse digital control channel
10/22/1997EP0802696A1 Retransmission control method for cdma mobile communication
10/22/1997EP0802656A2 Digital signal with several reference blocks, for channel estimation; methods of channel estimation and corresponding receivers
10/22/1997EP0802651A2 Error-robust multiplexing method with possible retransmission
10/22/1997EP0802650A2 Error-robust multiplexing method
10/22/1997EP0802648A1 Method and device for the correction of errors in the transmission of series of information items
10/22/1997EP0802647A2 STM-N signal error correction coding system and method
10/22/1997EP0802646A2 Error-robust multiplexing method with header control field
10/22/1997EP0802635A2 Method of transmitting coded data
10/22/1997EP0801853A2 High-speed data transmission in mobile communication networks
10/22/1997EP0476127B1 Cellular communications system
10/21/1997US5680633 Modular, portable data processing terminal for use in a radio frequency communication network
10/21/1997US5680419 Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems
10/21/1997US5680405 Remote reporting system for digital transmission line elements
10/21/1997US5680404 Cycling error count for link maintenance
10/21/1997US5680402 Priority broadcast and multi-cast for unbuffered multi-stage networks
10/21/1997US5680389 Data transmission system
10/21/1997US5680322 Method and apparatus for dynamic image data transmission
10/21/1997US5679943 Hand-held terminal with display screens, interactive screens, magnetic credit card readers, scanners, printers and handlers
10/21/1997US5678568 System control apparatus, medical system control apparatus and image-plane display method of medical system control apparatus
10/16/1997WO1997038549A1 Method and apparatus for forward error correction of transmitted digital signals in networks
10/16/1997WO1997038504A1 Device for estimating data cell loss rate in a digital communication network switching unit
10/16/1997WO1997038495A1 Data block convolutional coding device and method, and corresponding decoding method and device
10/15/1997EP0801483A2 Inter-processor communications
10/15/1997EP0800737A1 Multiple access digital transmitter and receiver
10/15/1997EP0800730A1 Method for the dynamic reconfiguration of a time-interleaved signal, and corresponding receiver and signal
10/15/1997CN1162377A Multiple band radio
10/15/1997CN1162227A Data structure, data communication method, equipment and communication terminal equipment
10/14/1997US5678179 Message transmission system and method for a radiocommunication system
10/14/1997US5677931 Transmission path switching apparatus
10/14/1997US5677918 Method and device for efficient error correction in a packet-switched communication system
10/14/1997US5677911 Data frame format for a digital signal having multiple data constellations
10/14/1997US5676840 Waste-oil cleaning method and apparatus
10/09/1997WO1997037471A1 Method and apparatus for determining coding rate in a wireless communication system
10/09/1997WO1997037469A1 Packet data transmission with clash subtraction
10/09/1997WO1997037460A1 Redundant local area network
10/09/1997WO1997037459A1 Method and apparatus for data recovery in arq systems
10/09/1997WO1997030563A3 Method and arrangement for channel allocation in a radio communications system
10/09/1997CA2250520A1 Packet data transmission with clash subtraction
10/08/1997EP0800279A2 Signal decoding for either Manhattan or Hamming metric based Viterbi decoders
10/08/1997CN1161765A Method and apparatus for fast fourier transform based maximal ratio combining
10/07/1997US5675697 Signal restoring apparatus in DVCR using two threshold values
10/07/1997US5675591 Reverse checksum method for telecommunication systems
10/07/1997US5675590 Cyclic trellis coded modulation
10/02/1997WO1997036449A1 Method and apparatus for locating a digital control channel in a downbanded cellular radiocommunication system
10/02/1997WO1997036409A1 Digital receiver with tunable analog parameters and method therefor
10/02/1997WO1997036394A1 Process for switching from an interrupted working data circuit to a reserve data circuit for annular data networks
10/02/1997WO1997036377A1 Apparatus and method for adaptive forward error correction in data communications
10/02/1997CA2250573A1 Method and apparatus for locating a digital control channel in a downbanded cellular radiocommunication system
10/01/1997EP0798939A2 Test signal generator for a vestigial transmission system and method
10/01/1997EP0798900A2 Multiplex data transmission system
10/01/1997EP0798891A2 Identification number issuing device and identification number verification device
10/01/1997EP0798889A2 Error control method and error control device for digital communication
10/01/1997EP0798888A2 Method and apparatus for digital communication with error encoding according to division of data in classes
10/01/1997EP0797878A1 Ofdm with variable subcarrier allocation
10/01/1997EP0797877A1 Digital transmission system for encoding and decoding attribute data into error checking symbols of main data
10/01/1997EP0705512B1 Method and apparatus for determining the data rate of a received signal
10/01/1997EP0570464B1 Transmitter and receiver for compatible high definition television system
10/01/1997CN1161121A Transmission system with improved symbol processing
10/01/1997CN1160956A Identification number issuing device and identification number verification device
09/1997
09/30/1997US5673291 Simultaneous demodulation and decoding of a digitally modulated radio signal using known symbols
09/30/1997US5673288 System and method for adaptive maximum likelihood sequence estimation
09/30/1997US5673266 Communication system
09/30/1997CA2053851C Integrated cellular communications system
09/30/1997CA2037027C Forward error correction code system
09/25/1997WO1997035412A1 Method and apparatus for routing a digitized rf signal to a plurality of paths
09/25/1997WO1997035401A1 Encoder and decoder
09/25/1997WO1997035396A1 Dynamic communication line analyzer apparatus and method
09/25/1997WO1997035395A1 Communications line test apparatus with an improved graphical user interface
09/25/1997DE19611197A1 Subscriber data transmission between network unit
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