| Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402) |
|---|
| 02/20/1990 | US4903321 Radio trunking fault detection system |
| 02/20/1990 | US4903262 Hardware interface and protocol for a mobile radio transceiver |
| 02/13/1990 | US4901319 Transmission system with adaptive interleaving |
| 02/13/1990 | US4901313 A-point to multi-points communication system |
| 02/13/1990 | CA1265845A1 Frequency offset diversity receiving system |
| 02/08/1990 | DE3821709A1 Method for decoding digital signals |
| 02/06/1990 | US4899340 Error correcting code and error correcting circuit using the same |
| 01/30/1990 | US4897835 In a time division multiplexed communication method |
| 01/30/1990 | US4897831 Data transmission/reception apparatus |
| 01/30/1990 | CA1265250A1 Data transmission |
| 01/30/1990 | CA1265222A1 Circuit and method for monitoring the quality of data in a data stream |
| 01/24/1990 | EP0352028A2 Apparatus for transmitting data between a central processor and remote peripheral devices |
| 01/23/1990 | US4896353 Apparatus for fast decoding of a non-linear code |
| 01/23/1990 | US4896151 Simultaneous communication method and system |
| 01/23/1990 | CA1264875A1 Method and device for transmitting digital data in the form of frame organized messages |
| 01/16/1990 | US4894827 Redundancy and buffering circuits |
| 01/10/1990 | EP0350361A1 Device for evaluating the tolerance range of a digital video signal |
| 01/10/1990 | EP0350238A2 Data communicating apparatus |
| 01/10/1990 | CN1038733A Path protection |
| 01/02/1990 | US4891813 Passive bus communication using alternate CRC |
| 01/02/1990 | US4891812 Method and apparatus for selecting a digital signal from a plurality of digital signals |
| 01/02/1990 | US4891806 Constellation multiplexed inband secondary channel for voiceband modem |
| 01/02/1990 | US4891637 Acknowledge back pager with apparatus for controlling transmit frequency |
| 12/26/1989 | US4890298 Troposcatter modem receiver |
| 12/21/1989 | DE3820640A1 Evaluation method for digital traffic messages |
| 12/20/1989 | EP0347069A2 Data path protection |
| 12/19/1989 | US4888767 Repeat request signal transmission method for multi-station packet communication |
| 12/19/1989 | US4888586 Data transmission system |
| 12/13/1989 | EP0172232B1 Alternating communication channel switchover system |
| 12/06/1989 | EP0344751A2 Code violation detection circuit for use in AMI signal transmission |
| 12/06/1989 | EP0344534A1 Method of monitoring the quality of digital signals in sections of a transmission line |
| 12/06/1989 | EP0344169A1 Transmission system. |
| 12/05/1989 | CA1263708A1 Method and receiver for receiving messages sent by radio |
| 11/30/1989 | DE3916085A1 Facsimile machine having an error-correction mode and method for switching down a data transfer rate |
| 11/29/1989 | EP0343639A2 Bit and symbol timing recovery for sequential decoders |
| 11/28/1989 | US4884272 Maximum likelihood diversity receiver |
| 11/23/1989 | EP0342547A1 Method for generating an alarm suppression signal |
| 11/21/1989 | US4882765 Data transmission system |
| 11/21/1989 | US4882738 Clock control system |
| 11/21/1989 | US4882730 TDMA communication system having common time slots for system maintenance |
| 11/21/1989 | CA1263147A1 Channel-system exchange system for digital data radio- communication system |
| 11/16/1989 | WO1989011193A1 High speed data interface for land mobile communication system |
| 11/15/1989 | EP0341891A2 TDM data transmission system |
| 11/15/1989 | EP0341256A1 Modem and method using multidimensional coded modulation. |
| 11/14/1989 | US4881241 Method and installation for digital communication, particularly between and toward moving vehicles |
| 11/14/1989 | CA1262939A1 Method of and apparatus for detecting minimum bit number of received data |
| 11/02/1989 | EP0339349A2 System and circuits for the minimum mean square error method applied to the transmission of digital signals |
| 10/31/1989 | US4878233 Data pattern synchronizer |
| 10/31/1989 | US4878228 Microwave relay station having a common standby channel for signals of different types of modulation |
| 10/31/1989 | US4878049 Information transmission system for railway vehicles |
| 10/25/1989 | EP0338881A1 Method and device for reconfigurating a signal in a differential information transmission network, especially in an automobile |
| 10/25/1989 | EP0338765A2 Radio communication system for data transmission and reception |
| 10/25/1989 | EP0338126A2 Method and apparatus for testing twisted-pair interconnections of a local area network |
| 10/24/1989 | US4876701 Synchronization failure detection |
| 10/24/1989 | US4876686 Fault detection signal transmission system |
| 10/24/1989 | US4876683 Repeater for regenerating frame-multiplexed signal |
| 10/19/1989 | WO1989009965A1 Error detection method for sub-band coding |
| 10/19/1989 | DE3811841A1 Digital signal transmission system with line stand-by operation |
| 10/11/1989 | EP0336547A2 Computer network and method for operating it |
| 10/11/1989 | EP0336336A1 Error rate measuring circuit for a synchronous digital transmission equipment |
| 10/11/1989 | EP0335917A1 Process for tracing defective stations in local networks and corresponding interface controller. |
| 10/11/1989 | EP0222792B1 Jitter measurement method and apparatus |
| 10/11/1989 | CN1036303A Channel switching system |
| 10/04/1989 | EP0334867A1 Duplex data transmission. |
| 10/03/1989 | US4872186 Apparatus and method for identification of message initiation in a process control network |
| 09/27/1989 | EP0334510A2 FDDI bit error rate tester |
| 09/27/1989 | EP0203140B1 A method and apparatus in radio reception for avoiding storing a message more than once |
| 09/27/1989 | EP0203139B1 Method and receiver for receiving messages sent by radio |
| 09/26/1989 | US4870646 Word synchronizer |
| 09/26/1989 | CA1260636A1 Watch pager system and communication protocol |
| 09/26/1989 | CA1260544A1 Channel switching system without instantaneous signal loss |
| 09/26/1989 | CA1260101A1 Self-adaptive hybrid data transmission |
| 09/20/1989 | EP0333196A2 Repeater for regenerating frame-multiplexed signal |
| 09/20/1989 | EP0333167A1 Receiver for a space diversity radio transmission system comprising a diversity combiner |
| 09/20/1989 | EP0333042A1 Receiver for a space diversity radio transmission system |
| 09/19/1989 | US4868851 Signal processing apparatus and method |
| 09/19/1989 | US4868824 Measurement of missed start-up rate and missed message rate |
| 09/13/1989 | EP0332055A2 Detection circuit arrangement for faulty levels of digital signals injected in a bus |
| 09/12/1989 | US4866707 Secure messaging systems |
| 09/12/1989 | US4866666 Method for maintaining data integrity during information transmission by generating indicia representing total number of binary 1's and 0's of the data |
| 09/08/1989 | WO1989008354A1 Process for controlling and/or monitoring and circuit arrangement for implementing the process |
| 09/05/1989 | US4864652 Method and apparatus for reducing radiation exposure through the use of infrared data transmission |
| 09/05/1989 | US4864641 Radio data transmission system |
| 09/05/1989 | US4864568 Communication control system |
| 09/05/1989 | US4864562 Sub-rate multi-media data transmission control system |
| 08/31/1989 | DE3805169A1 Method for transmitting a digitally coded audio signal |
| 08/30/1989 | EP0330223A2 Information distribution system |
| 08/30/1989 | EP0330178A2 Multiple accessing satellite communication system having standby central station |
| 08/30/1989 | EP0330177A2 Circuit for generating discrimination level voltage |
| 08/29/1989 | USRE33041 Multi-dimensional coding for error reduction |
| 08/29/1989 | US4862480 Digital data service system |
| 08/29/1989 | US4862461 Packet switch network protocol |
| 08/29/1989 | US4862457 Radio transmission system having simplified error coding circuitry and fast channel switching |
| 08/23/1989 | EP0181880B1 Apparatus for interfacing with x21 equipment |
| 08/22/1989 | US4860308 Modem communication system having main and secondary channels |
| 08/22/1989 | US4860292 Communication protocol |
| 08/22/1989 | US4860286 Encoding method in transmission of plurality of oversampled data channels, and apparatus for carrying out the method |
| 08/22/1989 | US4859815 Serial link transparent mode disparity control |
| 08/16/1989 | EP0327747A1 Digital transmission testing method and apparatus |
| 08/15/1989 | US4858236 Method for error correction in memory system |