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)
06/1995
06/13/1995US5425059 Adaptive receiving apparatus for digital communication system
06/13/1995US5425051 Radio frequency communication network having adaptive parameters
06/13/1995US5425050 Television transmission system using spread spectrum and orthogonal frequency-division multiplex
06/13/1995US5425037 Data transmission apparatus
06/13/1995US5425033 Detection of errors in a digital transmission system
06/13/1995US5425025 Communication protocol system
06/13/1995US5425019 Call accommodation system containing emergent calls and normal calls
06/13/1995CA2028820C Line signal deterioration removing system
06/08/1995WO1995015655A1 Multiplexing digital signals for transmission to remote locations
06/08/1995WO1995015638A1 Differential encoder and decoder for pragmatic approach trellis-coded mdp-8 modulation
06/08/1995WO1995015630A1 Network interface unit remote test pattern generation
06/08/1995CA2177811A1 Multiplexing digital signals for transmission to remote locations
06/07/1995EP0656712A1 Viterbi equaliser using variable length tracebacks
06/07/1995EP0656697A2 Method and apparatus for creating fast fading at a receiver using orthogonally polarized antennas and transmitter time diversity
06/07/1995CN1103521A Noncoherent receiver employing a dual-maxima metric generation process
06/06/1995US5423059 Method for enhancing signal quality in a simulcast communication system
06/06/1995US5422913 High frequency multichannel diversity differential phase shift (DPSK) communications system
06/06/1995US5422908 Phased array spread spectrum system and method
06/06/1995US5422894 Method for decoding data
06/06/1995US5422893 Maintaining information from a damaged frame by the receiver in a communication link
06/06/1995US5422877 Dual bus switching
06/06/1995US5422876 Out-of-band loopback control scheme
06/06/1995CA2039285C Method and device for sequentially decoding digital streams coded by a convolution type error correction code
06/06/1995CA1335832C Remote test access system for isdn testing
06/01/1995WO1995015038A2 Communication method in a radio telephone system
06/01/1995WO1995015033A1 Satellite receiver code rate switching apparatus
06/01/1995WO1995014971A1 Method and system for synchronizing encoders and decoders in communication networks when errors are detected
06/01/1995DE4402512C1 Data communication system for data pumps
06/01/1995DE4340637A1 HDB3 code violation detection circuit
05/1995
05/31/1995EP0655843A1 Digital receiver with minimum cost index register
05/31/1995EP0655161A1 Lost frame concealment
05/31/1995EP0655160A1 Transmission error concealment
05/31/1995EP0655159A1 Rejected frame concealment
05/31/1995CN1103221A Programmable error-checking matrix for digital communication system
05/30/1995US5420904 Signal averager
05/30/1995US5420886 Digital transmission equipment
05/30/1995US5420883 Train location and control using spread spectrum radio communications
05/30/1995CA2049619C Bit error ratio detector
05/26/1995WO1995014356A2 Method and apparatus of providing time sensitive message over a variable delay channel
05/26/1995CA2153148A1 Method and apparatus of providing time sensitive message over a variable delay channel
05/24/1995EP0654921A1 Method and apparatus for confirming delivery of files in a file broadcast system
05/24/1995EP0654910A1 Method for detecting information bits processed by concatenated block codes
05/24/1995EP0654194A1 A speech decoding method and a speech decoder
05/24/1995DE4435833A1 Information channel data encoding, transmission, storage and decoding e.g. for HDTV signal
05/24/1995CN1102921A Method and apparatus for detecting bit rate in variable bit rate communication
05/23/1995US5418821 Method and apparatus for sample-data receiver squelch
05/23/1995US5418814 Threshold cancellation means for use in digital mobile radio networks
05/23/1995US5418813 Method and apparatus for creating a composite waveform
05/23/1995US5418795 Viterbi decoder with path metric comparisons for increased decoding rate and with normalization timing calculation
05/23/1995US5418789 Fast communication link bit error rate estimator
05/23/1995US5418721 Control device for transmission of supervisory control data in vehicle
05/23/1995US5418720 Symbol width measurement system
05/23/1995US5418684 Hand-held data capture system with interchangeable modules
05/18/1995WO1995013579A1 Reducing errors in digital communication
05/18/1995DE4339122A1 Controlling access to redundant transmission channels in bus system
05/18/1995DE4339046A1 Controlling access to redundant transmission channels in bus system
05/17/1995EP0653873A1 Voice activated data rate change in simultaneous voice and data transmission
05/17/1995EP0653131A1 Method and apparatus for conveying a field of data in a communication system
05/17/1995EP0606396A4 A radio frequency local area network.
05/16/1995US5416827 Paging system with registration mode which interrupts the pager's standard operating protocol and is energized with a higher duty cycle
05/16/1995US5416804 Digital signal decoder using concatenated codes
05/16/1995US5416801 Digital signal transmission system based on partitioning of a coded modulation with concatenated codings
05/16/1995US5416797 System and method for generating signal waveforms in a CDMA cellular telephone system
05/16/1995US5416788 Error burst detection
05/16/1995US5416787 Method and apparatus for encoding and decoding convolutional codes
05/16/1995US5416785 Data communication apparatus having memory control in an error correction communication mode
05/16/1995CA2132643A1 Voice activated data rate change in simultaneous voice and data transmission
05/16/1995CA2031234C Multimedia protocol interface for 64kbit/s data flow
05/11/1995WO1995012950A1 Relay apparatus
05/11/1995WO1995012944A1 Continuous phase modulation with controlled intersymbol interference
05/11/1995WO1995012943A1 Method and apparatus for the transmission of variable rate digital data
05/11/1995WO1995012942A1 A communication network providing wireless and hard-wired dynamic routing
05/11/1995WO1995012938A1 Variable rate signal transmission in a spread spectrum communication system using coset coding
05/11/1995WO1995012936A1 A method and apparatus for locating a digital control channel in a radiocommunication system
05/11/1995WO1995012935A1 Automatic retransmission request
05/11/1995WO1995012934A1 Layer 2 protocol in a cellular communication system
05/11/1995WO1995012933A1 A message transmission system and method for a radiocommunication system
05/11/1995WO1995012932A1 Enhanced sleep mode in radiocommunication systems
05/11/1995WO1995012931A1 Digital control channels having logical channels for multiple access radiocommunication
05/11/1995WO1995012930A1 A method for communicating in a wireless communication system
05/11/1995WO1995012925A1 Dual-mode wireless unit with two spread-spectrum frequency bands
05/11/1995WO1995012849A1 Burst error corrector
05/11/1995DE4337593A1 Multi-frequency method for transmitting alphanumeric messages
05/11/1995CA2281959A1 Automatic retransmission request
05/11/1995CA2175700A1 A communication network providing wireless and hard-wired dynamic routing
05/11/1995CA2175085A1 Dual-mode wireless unit with two spread-spectrum frequency bands
05/10/1995EP0652680A2 Method for communicating in a wireless communication system
05/10/1995EP0652658A2 Synchronous/asynchronous system having function of switching path upon fault
05/10/1995EP0651926A1 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
05/10/1995EP0651925A1 Frequency hopping time-diversity communications systems and transceivers for local area networks
05/09/1995US5414796 Method of speech signal compression
05/09/1995US5414737 Data decoding device with error rate estimation
05/09/1995US5414717 Multiplex communication control apparatus
05/09/1995US5414711 Error detector circuit and method therefor
05/04/1995WO1995012251A1 A wireless packet data communications modem and method of use therein
05/03/1995EP0651531A2 Communication technique employing variable information transmission rate function of quality
05/03/1995EP0651405A1 Cooled secondary of electric automobile charging transformer
05/03/1995EP0650429A1 Train location and control using spread spectrum radio communications
05/02/1995US5411536 Method and apparatus for communicating data between medical devices to improve detectability of errors
04/1995
04/26/1995EP0650276A1 Test apparatus for ATM telecommunication networks and ATM connection quality measure
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