Patents
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
04/1994
04/21/1994DE4234603A1 RDS demodulator and error-corrector - delays received signals, demodulates and corrects errors according to threshold cross-over of demodulated signals
04/20/1994EP0593404A1 Multi-processor Viterbi decoder for digital cellular base stations using pipeline processing
04/20/1994EP0593260A2 Coding of data
04/20/1994EP0295426B1 Method and apparatus for generating alert messages in a communication network
04/20/1994CN1085713A Over plug-in-substraction positive (or negative) code speed regulating method & its apparatus
04/20/1994CN1085712A Digital separating plug-in type positive (negative) code speed regulating method and its apparatus
04/20/1994CN1085711A Digital positive/zero/negative code speed regulating method and apparatus
04/19/1994US5305353 Method and apparatus for providing time diversity
04/19/1994US5305352 For use in a receiver
04/19/1994US5305325 Method and a device for supervising and testing majority voting
04/19/1994US5305323 Technique for digitally detecting bit-error densities that occur in a serial bit stream
04/19/1994US5305181 Arm or wrist mounted terminal with a flexible housing
04/19/1994CA2006293C Non-intrusive transmission channel diagnostic device for a digital modem applied to a regenerative demodulator
04/19/1994CA1328682C Method and apparatus for communication network alert record identification
04/14/1994CA2108238A1 Multi-processor demodulator for digital cellular base station employing partitioned demodulation procedure with pipelined execution
04/12/1994US5303266 Multimedia high speed network
04/12/1994CA2066611C Error detection for fiber distributed interfaced optic link
04/06/1994EP0394313B1 Paging terminal apparatus with message storage and retransmission capability and method therefor
04/05/1994US5301197 Bit error ratio detector
04/05/1994US5301194 Packet re-transmitting system for satellite communication system of the slotted-aloha type
03/1994
03/31/1994WO1994007314A1 Method for synchronising transmitter frequencies in common wave digital audio broadcast
03/30/1994EP0589709A2 Multiresolution transmission system
03/30/1994EP0588932A1 Variable rate vocoder
03/29/1994US5299208 Enhanced decoding of interleaved error correcting codes
03/29/1994US5299201 Method and apparatus for isolating faults in a network having serially connected links
03/23/1994EP0588745A1 Multi-media analog/digital/optical switching apparatus
03/23/1994EP0588104A2 Multipath torus switching apparatus
03/23/1994EP0588025A2 Switch-based microchannel planar apparatus
03/23/1994EP0587975A2 Diversity radio receiver
03/23/1994EP0587792A1 Battery saver for a communication device
03/23/1994EP0587620A1 Radio system
03/22/1994US5297171 Receiver comprising at least two receive branches
03/22/1994US5297164 Digital communications systems
03/22/1994US5297163 Method for processing signals for signal transmission in the base band
03/22/1994US5297143 Network communication protocol including a reliable multicasting technique
03/18/1994CA2099024A1 Multi media analog/digital/optical switching apparatus
03/17/1994WO1994006231A1 Digital signal transmission system using frequency division multiplex
03/17/1994WO1994006080A1 Communications control unit and information transmission process
03/16/1994EP0586554A1 Binary data error correction using hint signal
03/15/1994US5295159 Coordinated coding for digital transmission
03/15/1994US5295154 Radio frequency local area network
03/15/1994US5295132 Multiplex transmission apparatus with transmission line fault detection
03/09/1994EP0585427A1 Method and apparatus for estimating signal weighting parameters in a receiver
03/09/1994EP0585420A1 Method and apparatus for estimating signal weighting parameters in a diversity receiver
03/08/1994US5293520 Jitter analyzer
03/02/1994EP0584918A1 Method of detecting the disconnection of a transmission line
03/02/1994EP0584848A1 Method for testing a protocol, and system for applying the method
03/02/1994EP0584248A1 Dual mode transmitter and receiver
03/02/1994EP0315699B1 Method and system for checking errors of signal being transferred through transmission line
03/02/1994CN1083293A Regenerative communication channel extender
03/02/1994CN1083291A Modulator test system
03/01/1994US5291519 Digital mobile communications terminal equipment and receiving method therefor
03/01/1994US5291516 Dual mode transmitter and receiver
02/1994
02/23/1994EP0583385A1 Fault detection and isolation of fiber to the curb systems
02/23/1994CN1082790A Signal Averager
02/22/1994US5289501 Coded modulation with unequal error protection for fading channels
02/22/1994US5289476 Transmission mode detection in a modulated communication system
02/22/1994US5289473 Method for determining byte error rate
02/22/1994US5289471 Digital communication apparatus having an error detecting section
02/22/1994US5289459 Duplex data transmission
02/16/1994EP0583172A1 Speech decoding apparatus and method of decoding
02/16/1994EP0582848A2 Method of error detection in digital communication systems
02/16/1994EP0582749A1 Error detection and correction device
02/16/1994CN1082283A High-speed facility protection in a digital telecommunications system
02/15/1994US5287374 Identification of encoder type through observation of data received
02/15/1994US5287185 Method of correcting transmission error in digital color-television communication system and digital color-television communication system to work said method
02/15/1994US5287180 Modulator/demodulater for compatible high definition television system
02/15/1994CA1327061C Method for generating an alarm indication signal (ais)
02/09/1994EP0582233A1 Adaptive receiver for multipath fading channels
02/09/1994CN1081804A Group facility protection in a digital telecommunications system
02/08/1994US5285481 For filtering an incoming data signal
02/08/1994US5285478 Communication system utilizing self-similar signals
02/08/1994US5285459 HDB3 code violation detector
02/08/1994US5285458 System for suppressing spread of error generated in differential coding
02/08/1994US5285450 Inband communications in a digital communications system
02/08/1994US5285441 Errorless line protection switching in asynchronous transer mode (ATM) communications systems
02/03/1994WO1994003002A1 Frequency hopping time-diversity communications systems and transceivers for local area networks
02/02/1994EP0581477A1 Method and apparatus for error-controlled muting in a digital receiver
02/01/1994US5283782 System switching method and apparatus without loss of signal in cell switching system of asynchronous transfer mode
02/01/1994US5283780 Digital audio broadcasting system
02/01/1994US5283531 Demodulation apparatus incorporating adaptive equalizer for digital communication
02/01/1994CA2017802C Device for detecting losses in the signal received by a digital signal receiver
01/1994
01/27/1994DE4224214A1 Source controlled channel encoding method - expanding Viterbi algorithm to increase or decrease some states to give priority to certain information bits with apriori or aposteriori information.
01/26/1994EP0580497A1 Data transmission system, especially optical system, for modification of transmission parameters depending on bit error rate measured at the receiver
01/26/1994EP0580339A1 Modulators test systems
01/26/1994EP0580282A2 Conversion of ISDN LAPB and ISDN LAPD frames
01/26/1994CN1081298A A method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
01/26/1994CN1081296A Triple orthogonally interleaved error correction system
01/25/1994US5282211 Slip detection during bit-error-rate measurement
01/25/1994US5282209 Data word transmission system utilizing at least two transmission channels
01/20/1994WO1994001950A1 Computer/telephone interface apparatus
01/19/1994EP0579131A2 Method and system for detecting and correcting errors
01/19/1994EP0579040A2 Connection protection in a digital telecommunications system
01/19/1994EP0579029A2 Connection protection in a digital telecommunications system
01/19/1994CN1081040A "method and apparatus for the formatting of data for transmission"
01/19/1994CN1081039A Duplex communication control device
01/19/1994CN1081038A Digital audio data muting system and method
01/19/1994CN1081037A "method and system for the arrangement of vocoder data for the masking of transmission channel induced errors"
01/18/1994US5280533 Coding method for skewed transition correction in parallel asynchronous communication systems
01/18/1994US5280485 Coding method for skewed transition detection in parallel asynchronous communication system