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)
12/1990
12/14/1990WO1990016117A1 System for removing circuit signal deterioration
12/11/1990US4977499 Method and apparatus for commanding operations on a computer network
12/11/1990CA1277772C Deep trap machine
12/11/1990CA1277714C Digital communication device with bit error reduced by using two signal transmission paths
12/08/1990CA2020357A1 Hand-held data capture system with interchangeable modules
12/05/1990EP0400983A2 Bit error rate detection
12/05/1990EP0400603A2 Monitoring method for stand-by circuits suitable for a multiplexing/demultiplexing apparatus
12/05/1990EP0400520A1 Receiving signal drop-out detecting device for digital signal receiver
12/05/1990EP0400234A1 Method for maintaining data integrity during information transmission
12/05/1990CN1047594A Rapid receiver signal strength indication
12/04/1990US4975952 Method of data communication
12/01/1990WO1990015487A1 Bit error rate detection
11/1990
11/29/1990WO1990014724A1 Bit stream machine
11/29/1990WO1990014723A1 Bit stream machine
11/28/1990EP0399845A2 Rapid receiver signal strength indication
11/27/1990WO1990014730A1 Rapid received signal strength indication
11/27/1990US4973953 Data transmission system with improved fault
11/22/1990EP0397968A2 Speech codec
11/22/1990EP0397934A1 Bit stream machine
11/22/1990EP0397933A1 Bit stream machine
11/21/1990CN1010538B Device for detecting bit phase difference
11/20/1990US4972511 Receiver test apparatus with test message injector
11/20/1990US4972434 Receiver for a space diversity radio transmission system, the receiver including a diversity combiner
11/20/1990US4972405 Data path protection
11/20/1990US4972345 Apparatus for error detection and reporting on a synchronous bus
11/15/1990DE3915487A1 Radio receiver for MM range suitable for mobile military use - has structural and spatial alignment, identical reception modules in two spaced, vertical groups
11/15/1990DE3906793A1 Method for correcting cell losses in the transmission of digitally coded analog signals
11/14/1990EP0397559A1 Digital data generator
11/14/1990EP0397536A2 Apparatus for generating sequences of digital signals
11/14/1990EP0397535A2 Modem
11/14/1990EP0397386A2 Diversity receiver arrangement for digital signals
11/14/1990EP0397385A2 Error correction method and apparatus
11/13/1990US4970714 Adaptive data link protocol
11/13/1990CA1276309C Enhanced distance data transmission system
11/12/1990CA2014867A1 Generalized partial response channel signaling systems
11/07/1990EP0396101A2 Space diversity TDMA receiver
11/07/1990EP0395739A1 Process for controlling and/or monitoring and circuit arrangement for implementing the process.
11/06/1990US4969161 Apparatus for inputting and outputting data
11/06/1990US4968970 Method of and system for power line carrier communications
11/01/1990WO1990013187A1 Method of maintaining an established connection in a mobile radio system comprising both analog and digital radio channels
10/1990
10/31/1990EP0395494A2 Method of and system for power line carrier communications
10/31/1990EP0394357A1 Acknowledge back pager with apparatus for controlling transmit frequency.
10/31/1990EP0394313A1 Paging terminal apparatus with message storage and retransmission capability and method therefor.
10/30/1990US4967413 Burst signal detection apparatus
10/30/1990US4967412 Serial data frame generator for testing telecommunications circuits
10/30/1990US4967406 Subsignal transmitting system
10/30/1990CA1275739C Error correction method
10/24/1990EP0394174A2 System and method for reporting message format errors in a format independent manner
10/24/1990EP0393646A2 Method of and apparatus for transmitting video data
10/24/1990EP0393351A2 Method and circuit for determing cell dropping and/or insertion during transmission of cell-structured signals via a cell-oriented transmission system
10/24/1990EP0393314A2 High data rate asynchronous communication method and apparatus
10/23/1990US4965576 Error correcting system capable of effectively using an allowable frequency band
10/18/1990WO1990012463A1 Spread spectrum-time diversity communications systems and transceivers for multidrop local area networks
10/18/1990WO1990012380A1 Error correction for infrared data communication
10/18/1990DE3912335A1 Testing system for multi=wire transmission path - uses input of test pattern in storage register at each peripheral for re-transmission to central control
10/17/1990EP0392603A2 Transmission system
10/16/1990US4964141 Serial data processor capable of transferring data at a high speed
10/16/1990US4964127 Data validity checking means
10/16/1990US4964122 TDM data transmission system
10/16/1990US4964112 Method for monitoring the quality of a digital signal in sections of a data transmission circuit
10/10/1990EP0391354A2 Method of generalizing the Viterbi-algorithm and apparatus to carry out the method
10/10/1990EP0390920A1 Series controller
10/09/1990US4962509 Code violation detection circuit for use in AMI signal transmission
10/02/1990USRE33368 Data set network diagnostic system
10/02/1990US4961221 Communication method and system with encryption of information
10/02/1990US4961190 (1+N) Hitless channel switching system
09/1990
09/26/1990EP0388495A1 Method of monitoring the quality of at least two transmission sections of a transmission link for digital signals and a device making use of such a method
09/26/1990CN1009790B Method and device for building up connection in shortwave radio networks
09/20/1990WO1990010905A1 Programmable error correcting apparatus within a paging receiver
09/20/1990DE3908942A1 Method for determining the channel pulse response of a transmission channel
09/19/1990EP0388163A2 Interference detection apparatus for use in digital mobile communications system
09/19/1990EP0387957A1 Method for information transmission in a radio data communication network, and a system for which the method is carried out
09/18/1990US4958350 Error detecting/correction code and apparatus
09/18/1990CA1274293A2 Multipurpose digital ic for communication and control network
09/18/1990CA1274292A1 Protection channel monitoring system using a check signal comprising two different n-bit code patterns sequentially arranged at random
09/18/1990CA1274278A1 Modem suited for wireless communication channel use
09/13/1990DE4000932A1 Altering bit error rate - inputs errors or changing connections to prevent system abuse
09/11/1990US4956854 Digital pattern decoder
09/11/1990US4956852 Method for remote configuration of a modem
09/07/1990WO1990010265A1 Very high speed error detection network
09/05/1990EP0385042A1 Method of adjusting the end of transmission in a modem
08/1990
08/29/1990EP0384528A2 Circuitry with two parallel branches for transmitting a binary signal
08/28/1990US4953181 Apparatus and method for detecting digital carrier synchronization problems
08/24/1990CA2010809A1 Technique for acknowledging packets
08/23/1990WO1990009713A1 Network interface
08/23/1990WO1990009633A1 Process for operating a multicomputer system characterized by reliable signal quality
08/23/1990WO1990009632A1 Process for operating a multicomputer system characterized by reliable signal quality
08/22/1990EP0383711A1 Modem with a secure alternative mode, particularly for a switched telephone network
08/22/1990EP0383291A1 Transmission failure diagnosis apparatus
08/21/1990US4951281 Multiplex transmission system
08/16/1990EP0381949A1 Diversity combiner
08/16/1990CA2010134A1 Very high speed error detection network
08/08/1990EP0381565A1 Method of transmitting commands or information, and device for carrying out the method
08/08/1990EP0380876A2 Phase synchronous maximum likelihood decoder
08/08/1990EP0380730A1 Method and circuit for checking the operational capability of a data transmission path
08/08/1990EP0380509A1 Measuring process and device for the analysis of disturbances in digital buses.
08/07/1990US4947451 Multiple accessing satellite communication system having standby central station
08/07/1990US4947394 Spare channel monitor circuit
08/01/1990EP0379706A1 Non-intrusive device for diagnosing a transmission channel for a digital modem applied to a demodulator-regenerator
08/01/1990EP0379625A1 Method for the treatment of parity-controllable binary code words which undergo a digital damping and/or code conversion during their transmission
1 ... 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 ... 1035