| Patents for H04J 3 - Time-division multiplex systems (63,408) |
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| 07/26/1988 | CA1239711A1 Digital data transmitting device for communication paths of restricted and unrestricted transmission characteristics |
| 07/20/1988 | EP0274647A1 Method and circuit for the transmission of a lower speed digital signal in a time slot of a higher speed TDM signal |
| 07/19/1988 | US4759041 Local area network control system synchronization with phase-lock loop |
| 07/19/1988 | US4759040 Digital synchronizing circuit |
| 07/19/1988 | US4759018 Higher order digital transmission system including a multiplexer and a demultiplexer |
| 07/19/1988 | US4759016 TDMA communication system having common local path medium and local time slot for intraoffice calls |
| 07/19/1988 | US4759014 Asynchronous-to-synchronous digital data multiplexer/demultiplexer with asynchronous clock regeneration |
| 07/19/1988 | US4759009 Remote digital carrier alarm and terminal by-pass system |
| 07/14/1988 | WO1988005233A1 Optical communications network |
| 07/14/1988 | WO1988005232A1 An optical broadcast network |
| 07/14/1988 | DE3644175A1 Method for transmitting data using satellites |
| 07/12/1988 | US4757521 Synchronization method and apparatus for a telephone switching system |
| 07/12/1988 | US4757501 Method for zero byte time slot interchange |
| 07/12/1988 | US4757500 Method for zero byte time slot interchange |
| 07/12/1988 | US4757499 Method for zero byte time slot interchange |
| 07/12/1988 | US4757452 Jitter measurement method and apparatus |
| 07/05/1988 | US4755993 Transmission system using forward error correction |
| 07/05/1988 | US4755987 High speed scrambling at lower clock speeds |
| 07/05/1988 | US4755971 Buffer memory for an input line of a digital interface |
| 07/05/1988 | US4755773 Phase modulator apparatus for generating a burst phase-modulated wave |
| 06/28/1988 | US4754456 Multiplex system for replacing a faulty multiplexer output with an alternating pattern signal |
| 06/28/1988 | US4754455 Telephone signal transmission device |
| 06/28/1988 | US4754454 Synchronization circuitry for duplex digital span equipment |
| 06/28/1988 | US4754453 Digital radio transmission system with a connection-accompanying organization channel in the time-division multiplex frame |
| 06/28/1988 | US4754450 TDM communication system for efficient spectrum utilization |
| 06/23/1988 | DE3643768A1 Device for detecting superframes in time-division multiplex signals |
| 06/23/1988 | DE3642608A1 Integrated services broadband time division multiplex communications system |
| 06/22/1988 | EP0271955A2 Circuit for the synchronization of devices in exchange and amplifier stations in a time division transmission system |
| 06/22/1988 | EP0271866A2 Subrate multimedia data transmission control system |
| 06/22/1988 | EP0271805A2 Transmission system |
| 06/22/1988 | EP0271773A1 Method and arrangement for detecting and signalling faulty data multiplexer controlling signals in integrated circuits |
| 06/21/1988 | US4752943 Frequency of occurrence retraining decision circuit |
| 06/21/1988 | US4752923 Optimal frame arrangement for multiplexing a plurality of subchannels onto a fixed rate channel |
| 06/21/1988 | CA1238432A1 Digital radio communication system |
| 06/16/1988 | WO1988004511A1 Input/output network for computer system |
| 06/15/1988 | EP0270978A2 Method and circuit for writing and reading packet-oriented data signals in a buffer memory |
| 06/14/1988 | US4751699 Multiplexing and demultiplexing equipments for a synchronous digital link with variable modulation speed and rate |
| 06/09/1988 | DE3640874A1 Circuit arrangement for combining binary signals, divided into two part-signals having in each case half the bit rate at the transmitting end, in the correct bit sequence at the receiving end |
| 06/08/1988 | EP0269974A2 Method and apparatus for detecting a predetermined bit pattern within a serial bit stream |
| 06/07/1988 | US4750181 Dynamic circuit checking apparatus using data input and output comparisons for testing the data integrity of a circuit |
| 06/07/1988 | US4750176 Single-channel communication bus system and station for use in such system |
| 06/07/1988 | US4750173 Method of transmitting audio information and additional information in digital form |
| 06/07/1988 | US4750172 Method for combining a digital video signal and three digital narrow band signals to form a 139,264 kbit/s signal |
| 06/07/1988 | US4750168 Channel allocation on a time division multiplex bus |
| 06/07/1988 | CA1237793A1 Terminal for data transmission system |
| 06/01/1988 | EP0269120A2 TDMA communication system having common time slots for system maintenance |
| 06/01/1988 | EP0268792A2 Data multiplex transmission system |
| 05/31/1988 | US4748637 Digital subscriber loop termination device |
| 05/31/1988 | US4748623 Frame synchronizing circuit |
| 05/31/1988 | US4748622 Satellite communication system |
| 05/31/1988 | US4748621 TDMA/TDM interfacing |
| 05/31/1988 | US4748620 Time stamp and packet virtual sequence numbering for reconstructing information signals from packets |
| 05/31/1988 | US4748588 Fast data synchronizer |
| 05/31/1988 | EP0138949A4 A wideband digital switching network. |
| 05/24/1988 | US4747112 Decoding method for T1 line format for CCITT 32K bit per second ADPCM clear channel transmission and 64 KBPS clear channel transmission |
| 05/24/1988 | US4747099 PCM communication apparatus |
| 05/24/1988 | US4747098 Method of encoding data into a frame |
| 05/24/1988 | US4747096 Combination TASI and ADPCM apparatus |
| 05/24/1988 | US4747094 Signal coupling system for optical repeater system |
| 05/17/1988 | US4745594 Offset-compensated switched-capacitor filter for TDM multichannel analog signals |
| 05/10/1988 | US4744082 Multiplexer apparatus having nBmB coder |
| 05/10/1988 | US4744081 Frame find circuit and method |
| 05/10/1988 | CA1236552A1 Telesignalling method and device for a digital transmission link |
| 05/05/1988 | WO1988003343A1 Multiplex digital communications system |
| 05/03/1988 | US4742531 Encoding method for T1 line format for CCITT 32k bit per second ADPCM clear channel transmission |
| 05/03/1988 | US4742513 Adaptive window multiplexing technique |
| 05/03/1988 | US4742352 Radio communication system equipped with electronic appliance |
| 05/03/1988 | CA1236228A1 Methods for transmitting and receiving high quality audio programs and receiving device |
| 05/03/1988 | CA1236180A1 Surface acoustic wave device for data rate reduction |
| 04/28/1988 | DE3630794C1 Method for exchanging binary characters in accordance with a pattern |
| 04/27/1988 | EP0264879A2 A fault detection signal transmission system |
| 04/27/1988 | EP0264854A2 Circuit for detecting plural kinds of multi-frame synchronization on a digital transmission line |
| 04/27/1988 | EP0264378A1 Data network synchronisation |
| 04/26/1988 | US4740966 Analog input circuit for microcontroller apparatus |
| 04/26/1988 | US4740964 Alarm indications signal detection apparatus |
| 04/26/1988 | US4740963 Voice and data communication system |
| 04/26/1988 | US4740962 Synchronizer for time division multiplexed data |
| 04/26/1988 | US4740961 Frame checking arrangement for duplex time multiplexed reframing circuitry |
| 04/26/1988 | US4740960 Synchronization arrangement for time multiplexed data scanning circuitry |
| 04/26/1988 | US4740959 For a telecommunication terminal device |
| 04/26/1988 | CA1235828A1 Time division exchange for carrying out a loop-back test |
| 04/21/1988 | WO1988002959A1 Method for transmitting data in packet switching networks |
| 04/20/1988 | EP0263960A2 Circuitry for the transmission of data signals |
| 04/19/1988 | US4739510 Direct broadcast satellite signal transmission system |
| 04/14/1988 | DE3634087A1 Method for transmitting information additional to digitally coded audio signals |
| 04/13/1988 | EP0263421A2 Multipoint data communication with a supervisory system for detecting a malfunctioning remote station |
| 04/13/1988 | EP0263418A2 Cross-connection network using time switch |
| 04/13/1988 | EP0263377A2 High-speed pulse swallower |
| 04/13/1988 | EP0263246A2 Explosion-protected multiplexer |
| 04/12/1988 | US4737949 Transmission system for digital repeater supervisory code transmission |
| 04/12/1988 | US4737722 Serial port synchronizer |
| 04/07/1988 | DE3632047A1 Optical communications system for narrow-band and broadband information signals, particularly in the local loop |
| 04/06/1988 | EP0262705A2 Arrangement for the nodes of a meshed telecommunication network |
| 04/06/1988 | EP0262478A1 Method for frame synchronization of an exchange of a PCM-TDM telecommunication network |
| 04/05/1988 | US4736462 Photonic switching |
| 04/05/1988 | US4736393 Distributed timing control for a distributed digital communication system |
| 04/05/1988 | US4736377 Method for determining reliability of high speed digital transmission by use of a synchronized low speed side channel |
| 04/05/1988 | US4736372 Method and apparatus of transmission for a digital signal |
| 04/05/1988 | US4736362 Programmable data-routing multiplexer |
| 03/31/1988 | DE3633064A1 Circuit arrangement for input and output of data signals |