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)
03/1985
03/05/1985CA1183620A1 Method for transmitting time-sharing multidata
02/1985
02/28/1985WO1985000946A1 Maintenance response signalling arrangement for a digital transmission system
02/28/1985WO1985000945A1 Control signalling arrangement for a digital transmission system
02/26/1985US4502142 Apparatus for detecting errors in a digital data stream encoded in a double density code
02/12/1985US4498885 Space diversity system
02/12/1985CA1182576A1 Automatic digital strapping apparatus for data modems
02/12/1985CA1182572A2 Industrial control system with interconnected remotely located computer control units
02/12/1985CA1182569A2 Industrial control system with interconnected remotely located computer control units
02/12/1985CA1182568A2 Industrial control system
02/12/1985CA1182567A2 Automatic line termination in distributed industrial process control system
02/05/1985US4498186 Data set diagnostic system
02/05/1985US4498173 Technique for digital split-channel transmission using interpolative coders and decoders
01/1985
01/31/1985WO1985000482A1 Signal quality steered diversity
01/29/1985US4497067 Interference cancellation type space diversity system
01/29/1985CA1181815A1 Mobile data terminal channel busy arrangement
01/22/1985US4495619 Transmitter and receivers using resource sharing and coding for increased capacity
01/22/1985US4494717 Vital transmission checking apparatus for communication channels
01/15/1985US4494240 Modem end of message detector
01/09/1985EP0130628A2 Real time transparent serial/echoplex interface apparatus
01/09/1985EP0130429A2 Failure detection apparatus
01/08/1985US4493082 Soft decision convolutional code transmission systems
01/08/1985CA1180785A1 Vital transmission checking apparatus for communication channels
01/02/1985CA1180408A Method and apparatus for signal-eye tracking in digital transmission systems
01/01/1985US4491943 Method for transmitting time-sharing multidata
12/1984
12/27/1984CA1180074A Forward error correction using coding and redundant transmission
12/25/1984US4490817 Packet error rate measurements by distributed controllers
12/20/1984WO1984004984A1 Majority circuit
12/19/1984EP0128624A2 Synchronisation method and arrangement in a data transmission system
12/19/1984EP0128473A2 Receiver for optical communication
12/19/1984EP0128353A2 Error recovery of non-store-through cache
12/19/1984EP0128214A1 Packet error rate measurements by distributed controllers.
12/12/1984EP0127984A2 Improvements to apparatus for decoding error-correcting codes
12/06/1984WO1984004860A1 Data detector using probabilistic information in received signals
12/04/1984US4486882 System for transmitting binary data via a plurality of channels by means of a convolutional code
12/04/1984US4486855 Activity detector usable with a serial data link
12/04/1984US4486852 Synchronous time-shared data bus system
11/1984
11/27/1984CA1178715A1 Device for transmitting signals between two information processing stations
11/27/1984CA1178681A1 Method and apparatus for measuring the frequency response of an element or elements in a digital transmission path
11/21/1984EP0125805A2 Bit error detection circuit for PSK-modulated carrier wave
11/14/1984EP0124906A2 Digital signal multiplex apparatus
11/13/1984US4483012 Differentially convolutional channel coding with expanded set of signalling alphabets
11/06/1984US4481648 Method and system for producing a synchronous signal from _cyclic-redundancy-coded digital data blocks
10/1984
10/30/1984US4480198 Device for increasing the operational security of a duplicated clock
10/30/1984CA1177137A1 Facility for fail-safe data transmission between trackside equipment of a guideway and vehicles moving therealong
10/25/1984WO1984004220A1 Enhanced distance data transmission system
10/25/1984WO1984004218A1 Improved error protection of linearly coded digital signals
10/24/1984EP0122870A2 Enhanced distance data transmission system
10/24/1984EP0122655A1 Digital transmission system
10/23/1984US4479217 Message identification and data entry apparatus
10/23/1984CA1176751A1 Digital temperature effect generator
10/16/1984US4477895 For use in a communication system
10/10/1984EP0046323B1 Method of writing and reading sector-organized information into and out of a record carrier body and device for performing the method
10/09/1984US4476539 Transversal type smear-desmear filter
10/02/1984US4475210 Data eye monitor
10/02/1984US4475049 Circuit for carrying data signals between first and second systems
09/1984
09/26/1984EP0119841A2 Redundant switchover system for a TDMA satellite communication equipment
09/26/1984EP0030551B1 A technique for increasing the rain margin of a communication system
09/25/1984CA1175114A1 Transversal type smear-desmear filter
09/19/1984EP0118763A2 Method of searching fault locations in digital transmission line
09/18/1984CA1174765A1 Method and apparatus for shuffling a block of data
09/11/1984USRE31666 Burst-error correcting system
09/11/1984US4471486 Vital communication system for transmitting multiple messages
09/11/1984US4471485 Method of protection against errors in transmission of radiotelegraph messages and a device for the application of said method
09/05/1984EP0117832A2 Vehicle multiplex system having protocol/format for secure communication transactions
09/05/1984EP0117733A2 Error detection circuitry for digital systems
09/05/1984EP0117595A2 Digital data transmission system
09/04/1984US4470142 Data processing
09/04/1984CA1173926A1 Line protection switch controller
08/1984
08/28/1984US4468789 Method for serial transmission and receipt of binary information
08/28/1984US4468787 Ternary data transmission system
08/28/1984US4468770 Data receivers incorporating error code detection and decoding
08/21/1984CA1173168A2 Serial transmission system for use in postage meters
08/14/1984CA1172748A1 Digital television signal processing
08/07/1984US4464757 Method and device for writing and reading sector-organized information into and from a record carrier body
08/07/1984US4464756 System for error detection in frequency shift keyed signals
08/07/1984CA1172331A1 Self-clocking data transmission system
08/02/1984WO1984002999A1 Apparatus for processing pcm signal
07/1984
07/31/1984US4463350 Communication system having designated transmission lines
07/31/1984US4463342 Method and means for carry-over control in the high order to low order pairwise combining of digits of a decodable set of relatively shifted finite number strings
07/24/1984US4462101 Maximum likelihood error correcting technique
07/24/1984US4462052 Device for interrogating and correcting a serial data signal
07/24/1984CA1171543A1 Industrial control system
07/24/1984CA1171536A1 Device for interrogating and correcting a serial data signal
07/24/1984CA1171535A1 Error rate detector
07/19/1984WO1984002817A1 Method of transferring digital signal
07/18/1984EP0113545A1 Packet error rate measurements by distributed controllers
07/18/1984EP0028619B1 An arrangement for supervising faults when transmitting data between computers
07/10/1984CA1170738A1 Digital signal processing method and apparatus
07/05/1984WO1984002627A1 Secondary channel method and apparatus
07/04/1984EP0112716A2 Secondary channel method and apparatus
07/04/1984EP0112666A2 Priority coding apparatus
07/03/1984US4458206 Circuit for synchronizing the demodulation of phase modulated transmission bursts
06/1984
06/27/1984EP0112108A2 Radio systems
06/27/1984EP0111913A1 Synchronisation supervising method and device in a time division multiplex system
06/26/1984US4457004 Signal processing apparatus
06/26/1984US4456997 Facility for fail-safe data transmission between trackside equipment of a guideway and vehicles moving therealong
06/26/1984US4456996 Parallel/series error correction circuit
06/26/1984CA1169937A1 Process and apparatus for digital data communication using packet switching
06/21/1984WO1984002439A1 Packet error rate measurements by distributed controllers
06/20/1984EP0111251A1 Data transmission system
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