| Patents for H04L 5 - Arrangements affording multiple use of the transmission path (28,368) |
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| 09/24/1991 | US5052025 Synchronous digital signal to asynchronous digital signal desynchronizer |
| 09/24/1991 | US5052024 Offset frequency multipoint modem and communications network |
| 09/24/1991 | US5051993 Mixed modulation level communication system |
| 09/24/1991 | US5051892 Full duplex conversation between transaction programs |
| 09/21/1991 | WO1991015064A1 Cable television radio frequency return method |
| 09/21/1991 | WO1991015063A1 Cable television radio frequency subscriber data transmission apparatus and calibration method |
| 09/21/1991 | WO1991015062A1 Cable television radio frequency data processor |
| 09/21/1991 | CA2078562A1 Cable television radio frequency data processor |
| 09/21/1991 | CA2078561A1 Cable television radio frequency return method |
| 09/21/1991 | CA2078548A1 Cable television radio frequency subscriber data transmission apparatus and calibration method |
| 09/20/1991 | WO1991015071A1 Integrated cellular communications system |
| 09/18/1991 | EP0447001A2 Current mode data bus digital communications system |
| 09/18/1991 | EP0446276A1 Adaptive rate control for echo cancelling modem. |
| 09/17/1991 | US5050166 Transfer of messages in a multiplexed system |
| 09/10/1991 | US5048061 Method for transmitting information over a bidirectional link, and apparatus for performing the method |
| 09/10/1991 | CA1288835C Line delay compensation for digital transmission systems utilizing low power line drivers |
| 09/03/1991 | US5046074 Synchronization method and synchronization recovery devices for half-duplex communication |
| 09/03/1991 | US5046063 Method and apparatus for achieving communication at all locations along a ping pong communications channel |
| 08/28/1991 | EP0443782A2 Apparatus and method for time multiplexing a resource among a plurality of entities |
| 08/28/1991 | EP0443482A1 Arrangement for linking digital terminals to a single, higher speed port |
| 08/28/1991 | CN1054159A Base station emulator |
| 08/22/1991 | WO1991012677A1 Multiple buffer time division multiplexing ring |
| 08/22/1991 | CA2075475A1 Multiple buffer time division multiplexing ring |
| 08/21/1991 | CN1053981A Method for capacity-variable regional communication transmitted with optical fibre system |
| 08/21/1991 | CN1053980A Method and equipment for large-capacity regional communication transmitted with optical fibre system |
| 08/20/1991 | US5042030 Apparatus for rearranging signal channels of a multi-loop time-division multiplexed transmission system |
| 08/20/1991 | CA1287905C Method and apparatus for detecting a rate of data transmission |
| 08/13/1991 | US5040172 Communication method utilizing channel highway and digital communication apparatus for realizing the same |
| 08/07/1991 | EP0440190A2 Modem having speed notifying means |
| 08/06/1991 | US5038366 Frequency multiplexed full duplex 4800 BPS modem |
| 07/31/1991 | EP0439008A2 Station-to-station full duplex communication in a token ring local area network |
| 07/23/1991 | US5034964 N:1 time-voltage matrix encoded I/O transmission system |
| 07/23/1991 | US5034962 Voice-band signal processor |
| 07/20/1991 | WO1991011063A1 Bidirectional inductive transmission of data with slave station supplied by the master |
| 07/20/1991 | CA2047736A1 Bidirectional inductive transmission of data where the slave station is fed by the master station |
| 07/17/1991 | CN1053157A Method of transmitting wide-band digital signal in subsystem cellular chains by synchron digital multiplex hierarchy network |
| 07/16/1991 | CA1286410C Remote monitoring system receiver with dual baud rate selector |
| 07/16/1991 | CA1286383C Communication system for vehicle |
| 07/11/1991 | WO1991010301A1 Error display device of data transmission system |
| 07/10/1991 | CA2007478A1 System for remote control signal transmission and reception |
| 07/02/1991 | US5029210 Cooperative communication system |
| 07/02/1991 | US5029183 Packet data communication network |
| 07/02/1991 | US5029165 Method of allotting links and routing messages for a common channel type signalling transfer point |
| 07/02/1991 | US5029163 Synchronous protocol data formatter |
| 06/25/1991 | US5027434 Apparatus for bidirectional transmission of optical signals |
| 06/18/1991 | US5025442 TDM/FDM communication system with pseudo-duplex capability |
| 06/13/1991 | WO1991008616A1 Frequency multiplexer/demultiplexer for digitally represented signals |
| 06/13/1991 | DE4025026A1 Code Division multiplexer with serial to parallel conversion - for values of PCM signal in half or full periods of sinusoidal AC |
| 06/12/1991 | EP0430955A1 Communication system. |
| 06/11/1991 | US5023869 Method and apparatus for maximizing the transmission capacity of a multi-channel bidirectional communications link |
| 06/05/1991 | EP0429888A2 Method for transmitting a digital wide-band signal in a tributary group system over a network of a synchronous digital multiplex hierarchy |
| 06/05/1991 | EP0429787A2 Data transfer apparatus |
| 06/04/1991 | US5022050 Serial data communication device |
| 06/04/1991 | US5022049 Multiple access code acquisition system |
| 06/04/1991 | US5022024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| 05/29/1991 | EP0428975A2 Constant voltage drive type driver circuit |
| 05/29/1991 | EP0428522A1 Process for switching signals into or out of subdomains of the supplementary signals of transmission modules of a synchronous digital signal hierarchy. |
| 05/28/1991 | US5020051 Duplex communications method and system |
| 05/22/1991 | EP0428407A2 An integrated communications link having dynamically allocatable bandwidth and a protocol for transmission of allocation information over the link |
| 05/22/1991 | EP0428046A2 Data transmission methods and apparatus, data processing apparatus and a neural network |
| 05/22/1991 | CN1051646A Method of cross-connecting stm-1-sigral in multichannel multiplying series |
| 05/21/1991 | CA2029525A1 Constant voltage drive type driver circuit |
| 05/16/1991 | WO1991007034A1 Serial signal transmission apparatus and method of controlling determination of polarity thereof |
| 05/16/1991 | CA2029850A1 Integrated communications link having dynamically allocatable bandwidth and a protocol for transmission of allocation information over the link |
| 05/15/1991 | EP0426961A1 Method for data transmission according to the time-sharing principle |
| 05/08/1991 | EP0426623A2 A process and a device for speed adaptation for integrated services digital network (ISDN) |
| 05/08/1991 | CA2029363A1 Data transmission methods and apparatus, data processing apparatus and a neural network |
| 05/07/1991 | US5014260 Method and apparatus for preventing transmission of data packets with a greater intensity than a predetermined value on any one of a number of channels on a common transmission link |
| 05/02/1991 | EP0425046A1 Method and device for transmitting a string of M binary words, each of "p" binary elements |
| 04/24/1991 | EP0423582A2 Method of amplification for burst-signals |
| 04/24/1991 | CN1050960A Device for evaluating and/or regulating throughput of virtual circuits on asynchronous time-division multiplex transmission channel |
| 04/23/1991 | US5010543 Optical multiplexing |
| 04/18/1991 | WO1990011675A3 Mixed modulation level communication system |
| 04/17/1991 | EP0422914A2 Station-to-station full duplex communication in a communications network |
| 04/17/1991 | CN1012412B High speed half duplex modem with fast turnaround protocol |
| 04/16/1991 | US5008901 Asymmetrical duplex error-controlled modem |
| 04/11/1991 | DE3932316A1 Transmitting binary data with sync. pulse - sending both simultaneously along same line using third signal level |
| 04/10/1991 | EP0421443A2 Data transmission control processing method |
| 04/09/1991 | US5007047 Adaptive rate control for echo cancelling modem |
| 04/03/1991 | EP0419750A1 Distribution mechanism for establishing communications between user interfaces of a communication system |
| 04/02/1991 | US5005188 Channel estimation and detection for digital communication systems |
| 03/21/1991 | WO1991003894A1 Signalling information multiplexer |
| 03/20/1991 | CN1012119B Design method and apparatus of single frequency duplexer communication system |
| 03/19/1991 | US5001729 High speed half duplex modem with fast turnaround protocol |
| 03/19/1991 | US5001703 Spectrally efficient TDM duplex communication system |
| 03/06/1991 | EP0415112A2 Cross-connection method for STM-1 signals of the synchronous-digital multiplexhierarchy |
| 02/28/1991 | DE3927973A1 Data transmission system for process automation control - uses full duplex transmission for data transfer using frequency shift keying modulation |
| 02/20/1991 | CN1049435A Automatic transfer switch of telex circuit |
| 02/19/1991 | US4995036 Multichannel data compressor |
| 02/19/1991 | CA1280482C Circuit arrangement for time-regeneration of broadband digital signals |
| 02/13/1991 | EP0412884A1 Radio system for data transmission to a low cost passive terminal |
| 02/13/1991 | CN1049256A Method and device for evaluating throughput of virtual circuits employing time-division multiplexed transmission channel |
| 02/12/1991 | US4993045 Modem diagnostic loop |
| 01/31/1991 | DE3924635A1 Duplex digital data and simultaneous alarm signal transmission - using half of channel bandwidth for data traffic and remainder for alarm transmission in fail-back mode |
| 01/30/1991 | CN1011461B Ensemble modem structure for imperfect transmission media |
| 01/29/1991 | US4989236 Transmission system for telephone communications or data transfer |
| 01/29/1991 | US4988989 Master-slave communication system for stations having timer means |
| 01/23/1991 | CN1048776A Ensemble modem structure for imperfect transmission media |
| 01/23/1991 | CN1048775A Ensemble modem structure for imperfect transmission media |
| 01/23/1991 | CN1048774A Ensemble modem structure for imperfect transmission media |