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)
08/1998
08/20/1998WO1998036577A1 Predictive coding method and decoding method for dynamic image
08/20/1998WO1998036545A1 Method and apparatus for processing a multi-level fsk signal
08/20/1998WO1998027681A3 Transmission system and recording system having a simplified symbol detector
08/19/1998EP0859487A2 Method for transmitting multimedia data
08/19/1998EP0859475A2 Direct sequence spread spectrum communication system
08/19/1998EP0858698A1 Data transmission method
08/19/1998CN1191052A Apparatus for decoding video signals encoded in different formats
08/19/1998CN1191050A Apparatus for demodulating and decoding video signals
08/19/1998CN1191048A Variable rate circuit-switched Transmission services in celluar radio system
08/19/1998CN1190833A Redundancy arrangement for telecommunications system
08/19/1998CN1190826A Automatic frequency correcting device and method for radio calling system
08/18/1998US5797085 Wireless communication system for reliable communication between a group of apparatuses
08/18/1998US5796787 Receiver and method thereof
08/18/1998US5796776 Code sequence generator in a CDMA modem
08/18/1998US5796772 Multi-band, multi-mode spread-spectrum communication system
08/18/1998US5796757 Methods and apparatus for performing rate determination with a variable rate viterbi decoder
08/18/1998US5796436 Video data storing device and method for coding video data based upon determining whether or not video data conforms to a predetermined standard
08/18/1998CA2138958C A data decoder and method for use there in using a dynamically indexed channel state metric
08/18/1998CA2083749C Maximum likelihood sequence estimation apparatus
08/18/1998CA2077343C Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system
08/13/1998WO1998035518A2 Directional pseudonoise offset assignment in a cdma cellular radiotelephone system
08/13/1998WO1998035475A1 Device for channel equalisation and decoding
08/13/1998WO1998035471A1 Redundancy arrangement for telecommunications system
08/13/1998WO1998035463A2 Method for frequency division duplex communications
08/13/1998WO1998035461A1 Method of interleaving a convolutionally coded signal in a spread spectrum communication system
08/13/1998WO1998035450A2 An information coding method and devices utilizing error correction and error detection
08/13/1998WO1998025379A3 A method and apparatus for improved communication for cable TV telephony and data transport
08/13/1998WO1998012880A3 Multiple carrier transmission system with differential coding of subcarriers
08/13/1998DE19706749C1 Transmission error detection in method GSM mobile radio system
08/13/1998DE19705354A1 Digital signal transmission system for radio communications network
08/12/1998EP0858196A1 Equaliser and channel decoder
08/12/1998EP0858193A1 Method and device for resource allocation in a digital packet transmission network
08/12/1998EP0858191A2 Method and apparatus for querying for missed messages in a radio communication system
08/12/1998EP0858182A2 Data communication apparatus and method using an ARQ scheme
08/12/1998EP0858181A1 Method for diversity equalisation in a radio receiver having a predetermined number of receiving channels and corresponding receiver
08/12/1998EP0857400A1 Variable length burst transmission over the physical layer of a multilayer transmission format
08/12/1998EP0538466B1 A system for echo cancellation comprising a ghost cancellation reference signal
08/11/1998US5794124 Time diversity communications system
08/11/1998US5793983 Input/output channel interface which automatically deallocates failed subchannel and re-segments data block for transmitting over a reassigned subchannel
08/11/1998US5793950 Device control apparatus
08/11/1998US5793841 Apparatus and method for receiving dual highway data in electronic switching system
08/11/1998US5793822 Bist jitter tolerance measurement technique
08/11/1998US5793818 Circuit for processing modulated signals
08/11/1998US5793815 Calibrated multi-voltage level signal transmission system
08/11/1998US5793803 Underrecovery system and method for block processing modems
08/11/1998US5793795 Method for correcting errors from a jamming signal in a frequency hopped spread spectrum communication system
08/11/1998US5793780 Method for monitoring transmission of digital data signals on two parallel data lines
08/11/1998US5793749 Method and apparatus for communications testing using a recorded test message
08/11/1998US5793746 Fault-tolerant multichannel multiplexer ring configuration
08/11/1998US5793745 Bundled protection switching in a wide area network background of the invention
08/11/1998US5793744 Digital mobile communication system
08/11/1998US5793509 Telecommunications network
08/11/1998CA2197263A1 Method of detecting signal degradation fault conditions within sonet and sdh signals
08/06/1998WO1998034366A1 Method and system for protecting equipment and switching functionality in a telecommunication system
08/05/1998EP0856966A2 Apparatus and method for data distribution with transmission confirmation
08/05/1998EP0856235A2 Simplifying decoding of codewords in a wireless communication system
08/05/1998EP0700605B1 Equivalent circuit process for a transmission device for the bidirectional transmission of digital signals and arrangement for implementing the process
08/05/1998EP0500159B1 Transmission system, and receiver to be used in the transmission system
08/05/1998CN1189935A Parallel concatenated tail-biting convolutional code and decorder therefor
08/05/1998CN1189730A Data distribution method and data distribution apparatus
08/04/1998US5790770 Method and apparatus for reducing information loss in a communications network
08/04/1998US5790606 Joint demodulation using spatial maximum likelihood
08/04/1998US5790596 Radiotelephone communication unit displaying chronological information
08/04/1998US5790595 Method for obtaining bit-specific reliability information
08/04/1998US5790587 Multi-band, multi-mode spread-spectrum communication system
08/04/1998US5790570 Concatenated trellis coded modulation and linear block codes
08/04/1998US5790569 Method and apparatus for generating, recording and transmitting an error product code block having an improved check code arrangement
08/04/1998US5790568 To process downlink frames to be transmitted from a spacecraft to ground
08/04/1998US5790566 Method and device for depuncturing data
08/04/1998US5790536 Hierarchical communication system providing intelligent data, program and processing migration
08/04/1998US5790057 System for transforming three state data to two state data
08/04/1998CA2116735C Bit error rate estimation
07/1998
07/30/1998WO1998033346A2 Method for control channel range extension in a cellular radio system, and a cellular radio system
07/30/1998WO1998033291A2 Method to control a switching unit and an arrangement working according to the method
07/30/1998WO1998033282A1 Channel coding in a cellular radio system
07/30/1998CA2279431A1 Method to control a switching unit and an arrangement working according to the method
07/29/1998EP0855793A2 Method of controlling dynamic range of digital audio broadcasting receiver
07/29/1998EP0855128A1 Arrangement and method relating to communications systems
07/29/1998EP0855108A1 A coding system and method providing unequal error protection by puncturing less significant symbols
07/29/1998EP0855107A1 Viterbi co-processor and method of operation therefor
07/29/1998EP0717893A4 Method and system for automatic optimization of data throughput using variable packet length and code parameters
07/29/1998CN1189269A Self-healing network
07/29/1998CN1189266A Method, device, DSP and modem for efficient echo canceler phase roll tracking
07/29/1998CN1189030A Receiving apparatus, receiving method, and terminal unit for use with radio system
07/29/1998CN1189025A Spread-spectrum receiver
07/28/1998US5787133 Method for producing a signal
07/28/1998US5787121 Data transmission system
07/28/1998US5787118 Adaptive equalizer and adaptive diversity equalizer
07/28/1998US5787114 Loop-back test system and method
07/28/1998US5787086 Method and apparatus for emulating a circuit connection in a cell based communications network
07/28/1998US5787076 Multi-mode TDMA spread spectrum communication system
07/28/1998US5787070 One for N redundancy in a communication system
07/28/1998CA2133107C Buffer allocation to repeated information blocks in data transmission, particularly video transmission
07/28/1998CA2092495C Communication system
07/28/1998CA2075650C Frame length control in a data transmission using atm network
07/23/1998WO1998032266A1 Encoder and decoder
07/23/1998WO1998032263A2 High-data-rate supplemental channel for cdma telecommunications system
07/23/1998WO1998032256A1 Apparatus, and associated method, for transmitting and receiving a multi-stage, encoded and interleaved digital communication signal
07/23/1998WO1998032236A1 Radio system and methods for duplex operation
07/23/1998WO1998032231A1 Method and apparatus for transmitting and receiving concatenated code data
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