| Patents for H04J 3 - Time-division multiplex systems (63,408) |
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| 04/24/1990 | US4920547 Stuff synchronization circuit |
| 04/24/1990 | US4920546 Frame synchronizing apparatus |
| 04/24/1990 | US4920535 Demultiplexer system |
| 04/24/1990 | US4920532 Electrical device command system, single wire bus and smart single controller arrangement therefor |
| 04/24/1990 | CA1268269A1 Transmision system using forward error correction |
| 04/19/1990 | WO1990004294A1 Method and apparatus for detecting impending overflow and/or underrun of elasticity buffer |
| 04/19/1990 | CA2001071A1 How to produce frequency/phase modulation |
| 04/18/1990 | EP0363631A1 Circuit arrangement for telecommunication exchanges, especially PCM time division telephone exchanges, with distributed switching networks connected to a central switching network |
| 04/18/1990 | EP0363630A2 Method for the resynchronisation of an exchange in a telecommunication network |
| 04/18/1990 | EP0363492A1 Radio communication system and its control method |
| 04/17/1990 | US4918689 Asynchronous communication system |
| 04/17/1990 | US4918687 Digital packet switching networks |
| 04/17/1990 | CA2000811A1 Label switching and control interface for asynchronous fast packet switching |
| 04/10/1990 | US4916717 Clock resynchronization mechanism |
| 04/10/1990 | US4916693 Digital time division multiplex system and method of controlling same |
| 04/05/1990 | DE3833184A1 Method and circuit arrangement for establishing frame synchronisation in a time-division multiplex system |
| 04/05/1990 | DE3832946A1 Method for encoding digital time-division multiplex signals |
| 04/04/1990 | EP0361398A1 Interface for asynchronous directional radio links |
| 04/04/1990 | EP0361395A1 Device for treating plesiochronic signals |
| 04/04/1990 | EP0360924A1 Method for operating pulse-controlled time division telecommunication exchanges, especially PCM telephone exchanges, with distributed switching networks connected to a central switching network |
| 04/03/1990 | US4914655 Multiplexing arrangement for a digital transmission system |
| 04/03/1990 | US4914429 Switch components and multiple data rate non-blocking switch network utilizing the same |
| 04/03/1990 | US4914404 Method for synchronization of a signal frequency to interference-prone reference signal frequencies |
| 04/03/1990 | CA1267447A1 Optimal frame arrangement for multiplexing a plurality of subchannels onto a fixed rate channel |
| 03/29/1990 | DE3831903A1 Multiplexer/demultiplexer for a data transmission system |
| 03/28/1990 | EP0360065A1 Method for operating telecommunication exchanges, especially PCM time division telephone exchanges, with distributed switching networks connected to a central switching network |
| 03/28/1990 | CN1040883A Modem with improved digital signal processor |
| 03/28/1990 | CN1007398B Synchronization recovery in communications system |
| 03/27/1990 | US4912706 Frame synchronization in a network of time multiplexed optical space switches |
| 03/27/1990 | US4912705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| 03/27/1990 | US4912702 Conditional multiplexer |
| 03/27/1990 | US4912699 Pulse code modulation terminal equipment |
| 03/27/1990 | CA1267239A1 Method of and apparatus for frame decoding |
| 03/27/1990 | CA1267238A1 Apparatus for status change recognition in a multiplex channel |
| 03/22/1990 | DE3901868C1 Channel distributor for plesiochronous signals |
| 03/22/1990 | DE3831054A1 Method for the digital coding of information of one, two or more channels and/or reducing the frequency of the alternating coding current or currents and transmission thereof |
| 03/21/1990 | EP0359352A2 Telecommunications transmission security arrangement |
| 03/21/1990 | EP0359325A1 Device for transmitting data words representing a digitized analog signal and device for receiving the transmitted data words |
| 03/21/1990 | EP0358831A1 Multiplexing system setting through mask registers |
| 03/20/1990 | US4910754 Initialization and synchronization method for a two-way communication link |
| 03/20/1990 | US4910729 ISDN traffic generator adapter |
| 03/20/1990 | US4910728 Multiplexer diagnostic input patterns |
| 03/20/1990 | US4910474 Method and apparatus for generating phase and amplitude modulated signals |
| 03/20/1990 | CA1266907A1 Method of synchronization between data communication devices permitting peer-peer and master-slave communications |
| 03/20/1990 | CA1266906A1 Combined circuit switch and packet switching system |
| 03/15/1990 | DE3901867C1 Channel distributor for plesiochronous signals |
| 03/14/1990 | EP0358582A2 A unique word detection system |
| 03/14/1990 | EP0218597B1 Frame arrangement for multiplexing a plurality of subchannels onto a fixed rate channel |
| 03/14/1990 | CN1040471A Communication system using distributed switching for time division multipexing of voice and date |
| 03/14/1990 | CN1040468A Telecommunications transmission security arrangement |
| 03/13/1990 | US4908822 Electrical devices command system, single wire bus and smart dual controller arrangement therefor |
| 03/13/1990 | US4908818 Multiplex communication arrangement capable of selectively monitoring active multiplexers and of simultaneously checking an input to a stand-by demultiplexer |
| 03/13/1990 | CA1266728A1 Frame code converter |
| 03/08/1990 | WO1990002455A1 Link utilization control mechanism for demand assignment satellite communications network |
| 03/08/1990 | WO1990002454A1 Drop/insert channel selecting system |
| 03/06/1990 | US4907247 Satellite delay simulation system |
| 03/06/1990 | US4907224 Method for transmitting data in multiple access data communications networks |
| 03/06/1990 | US4907222 Vehicle multiplex system |
| 03/06/1990 | US4907186 Data direct ingest system |
| 03/06/1990 | CA1266536A1 High speed bit interleaved time division multiplexer for multinode communication systems |
| 03/06/1990 | CA1266535A1 Multiplexer |
| 02/28/1990 | EP0356012A2 TDM Demultiplexer |
| 02/28/1990 | EP0355724A2 Two-level ECL multiplexer without emitter dotting |
| 02/28/1990 | EP0355587A2 Timing and carrier recovery in TDMA without preamble sequence |
| 02/28/1990 | EP0203151B1 Loop around data channel unit |
| 02/28/1990 | EP0203150B1 Method and apparatus for looping around a digital transmission line at a channel unit |
| 02/27/1990 | US4905258 Data circuit-terminating equipment |
| 02/27/1990 | US4905238 Analog amplifier-multiplexer for a data system |
| 02/27/1990 | US4905236 Circuit arrangement for designational reading of information of a bit group oriented, continuous information stream at an ISDN-oriented interface |
| 02/27/1990 | US4905228 Digital transmission channel framing |
| 02/27/1990 | US4905218 Optical multiplex communication system |
| 02/27/1990 | CA1266335A1 Offset-compensated switched-capacitor filter for tdm multichannel analog signals |
| 02/22/1990 | DE3828115A1 Method for coding information of one, two or more channels and/or frequency reduction of the alternating coding current or currents and transmission of the latter |
| 02/22/1990 | DE3828100A1 Method for coding information of one, two or more channels and/or frequency reduction of the alternating coding current or currents and transmission of the latter |
| 02/20/1990 | US4903269 Error detector for encoded digital signals |
| 02/20/1990 | CA1266136A1 Tdma/tdm interfacing |
| 02/13/1990 | US4901344 Telephone system digital channel bank interface |
| 02/13/1990 | CA1265879A1 Data framing system for time division multiplexing transmission |
| 02/13/1990 | CA1265878A1 Multiplex information transmission system |
| 02/08/1990 | DE3826265A1 Method and arrangement for allocating an identifier for traffic monitoring and control to digital signals DS140, DS34 and DS2 |
| 02/07/1990 | EP0353947A2 Time division multiplex arrangement |
| 02/07/1990 | EP0353946A2 Data communication arrangement with embedded matrix switch |
| 02/07/1990 | EP0353890A2 Information handling centre telecommunication servers |
| 02/07/1990 | EP0353737A2 Complex multiplexer/demultiplexer apparatus |
| 02/07/1990 | EP0353616A1 Method for clock synchronization on a disturbed reference clock |
| 02/07/1990 | EP0353610A2 Multiplexing apparatus |
| 02/07/1990 | CN1039516A Method and apparatus for through-connecting wideband connection in digital time switch |
| 02/06/1990 | US4899383 Apparatus and method for secure digital communication |
| 02/06/1990 | US4899351 Transient free clock switch logic |
| 02/06/1990 | US4899339 Digital multiplexer |
| 02/06/1990 | US4899337 Time division multiplexer with automatic call function |
| 02/06/1990 | CA1265629A1 Combination tasi and adpcm apparatus |
| 01/30/1990 | US4897832 Digital speech interpolation system and speech detector |
| 01/30/1990 | CA1265271A1 Bit interleaved multiplexer system providing byte synchronization for communicating apparatuses |
| 01/30/1990 | CA1265270A1 Variable control and data rates in highly efficient multiplexer |
| 01/30/1990 | CA1265269A1 Tdm communication system for efficient spectrum utilization |
| 01/25/1990 | WO1990000850A1 Method and apparatus for through-connecting a wideband connection in a digital time switch |
| 01/24/1990 | EP0351786A2 Data processing apparatus |
| 01/23/1990 | CA1264876A1 Synchronization of asynchronous data signals |
| 01/17/1990 | EP0351386A1 Method and apparatus for through-connecting a widebandconnection in a digital time switch |