| Patents for H04J 3 - Time-division multiplex systems (63,408) |
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| 02/26/1991 | US4996684 Electronic systems and effective reduction of electromagnetic interference energy propagation from electronic systems |
| 02/21/1991 | WO1991002420A1 Communication switching element and method for transmitting variable length cells |
| 02/20/1991 | EP0151616B1 Control signalling arrangement for a digital transmission system |
| 02/19/1991 | US4995054 Data transmission using switched resonance |
| 02/19/1991 | US4995036 Multichannel data compressor |
| 02/19/1991 | US4995034 Method of integrating one or more accessory function modules in telecommunications systems and access circuit for use therewith |
| 02/19/1991 | US4995032 Label-switching and control interface for asynchronous fast-packet switching |
| 02/19/1991 | CA1280522C Frame synchronization detection system for time division multiplexed (tdm) digital signals |
| 02/19/1991 | CA1280521C Time division multiplexing method with channel compression and a device therefor |
| 02/13/1991 | EP0412583A2 Method and apparatus for controlling a TDM communication device |
| 02/13/1991 | EP0412575A2 Stuffing decision circuit |
| 02/13/1991 | EP0412327A2 Multihop time assigned speech interpolation (TASI) system for telecommunication networks |
| 02/12/1991 | US4993026 Multiplexer apparatus with auxiliary synchronization for compensating for cable delays |
| 02/12/1991 | US4993022 System for and method of multiplexing speech signals utilizing priority signals for individual transmission channels |
| 02/12/1991 | US4993013 Monitor system for multiplex equipment |
| 02/12/1991 | CA2021093A1 Auxiliary signal in an information channel |
| 02/07/1991 | WO1991001603A1 Data transmission on optical networks |
| 02/07/1991 | WO1991001602A2 Device for forming cells using digitized signals and device for associated multiplex transmission |
| 02/07/1991 | WO1991001600A1 Digital added main line system |
| 02/07/1991 | DE3925309A1 Multiplexing multiple broad and narrow band digital signals - combining signals in one stage and combining resultants in second |
| 02/06/1991 | EP0412045A2 Digital cross-connect assembly |
| 02/06/1991 | EP0411756A2 Radio telephone receiver with gain control |
| 02/06/1991 | EP0138949B1 A wideband digital switching network |
| 02/06/1991 | CN1049079A Digital added main line system |
| 02/05/1991 | US4991207 One-way address transmission system of PCM music |
| 02/05/1991 | US4991173 Communication system |
| 02/05/1991 | US4991169 Real-time digital signal processing relative to multiple digital communication channels |
| 02/05/1991 | US4990910 Variable length code conversion system |
| 02/05/1991 | CA1279940C Method of and apparatus for frame decoding |
| 02/04/1991 | CA2015342A1 Digital cross-connect assembly |
| 01/31/1991 | DE4018687A1 Data block transmission in synchronous digital multiplex hierarchy - involves selection of reference byte before first filling with use of block indicator and recovered clock |
| 01/30/1991 | EP0335877A4 Method for transmitting data in packet switching networks |
| 01/29/1991 | US4989130 System for determining and storing valid status information received from cross coupled unit |
| 01/29/1991 | CA1279734C Method and apparatus for frame-bit modulation and demodulation of ds3signal |
| 01/23/1991 | EP0409230A2 Phase matching circuit |
| 01/23/1991 | EP0409168A2 Elastic store memory circuit |
| 01/22/1991 | US4987591 Electronic telephone apparatus able to supply sync clock signals reliably, and method of controlling the supply of sync clock signals |
| 01/22/1991 | US4987573 Telephone system digital channel bank interface |
| 01/22/1991 | US4987572 Apparatus and associated methods for converting asynchronous nonhomogeneous variable width parallel data to a format suitable for transmission over synchronous high speed serial transmission media |
| 01/22/1991 | US4987570 Methods and apparatus for performing time interleaved multiplexed rate adaptation for sub-rate channels in a digital data communication system |
| 01/22/1991 | US4987568 Monitor system for multiplex equipment |
| 01/20/1991 | WO1991001601A1 Frame aligner, control method thereof and apparatus therefor |
| 01/17/1991 | DE3922482A1 Series-parallel converter maintaining input word structure |
| 01/16/1991 | EP0408130A2 Device for adapting the bit rate of two signals |
| 01/16/1991 | EP0407903A2 TDM information transmission system with a synchronising circuit at the receiver responding the coding of words inserted in the transmitted information |
| 01/16/1991 | EP0407851A2 Method for interconnecting multiplexed signals via cross-connectors |
| 01/16/1991 | EP0407673A1 Process of synchronizing a receiving modem after a training on data |
| 01/16/1991 | EP0407629A1 Communication device for data transmission over optical fibres |
| 01/15/1991 | US4985890 Data transmission unit |
| 01/15/1991 | CA1279132C Ring transmission system |
| 01/14/1991 | CA2020937A1 Method for the through-connection of multiplex signals via cross connectors |
| 01/10/1991 | WO1990013182A3 Digital coding process |
| 01/09/1991 | EP0407367A2 Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system |
| 01/09/1991 | EP0407031A2 Apparatus for transmitting digital data in analog form |
| 01/09/1991 | EP0406925A1 Method of combining two data cell streams into a single data cell stream in an ATD multiplexer |
| 01/09/1991 | CN1048473A Digital transmission system transmitter and receiver for use in transmission system, and record carrier obtained by means of transmitter in form of recording device |
| 01/09/1991 | CN1048472A Mobile assisted handoff |
| 01/09/1991 | CA2020607A1 Circuit arrangement for word-by-word serial-to-parallel conversion |
| 01/08/1991 | US4984251 Method and apparatus for the synchronization of a cascaded multi-channel data transmission |
| 01/08/1991 | US4984238 Method and apparatus for frame synchronization |
| 01/08/1991 | US4984236 Circuit arrangement for use in the time division multiplexed signalling system |
| 01/02/1991 | EP0406193A2 A method for synchronizing a mobile unit and a base station |
| 01/02/1991 | EP0406186A2 Mobile assisted handoff |
| 01/02/1991 | EP0405839A2 Speech detector with improved line-fault immunity |
| 01/02/1991 | EP0405761A2 System for synchronizing data frames in a serial bit stream |
| 01/02/1991 | EP0405760A2 System for synchronizing data frame groups in a serial bit stream |
| 01/02/1991 | EP0405445A2 Output waveform control circuit |
| 01/02/1991 | CN1011107B Synchronisation arrangements for digital telecommunications exchange system |
| 01/02/1991 | CA1278627C Hierarchical data transmission system |
| 01/02/1991 | CA1278626C Asynchronous communications system |
| 01/01/1991 | US4982446 Bit synchronization for optical networks |
| 01/01/1991 | US4982185 System for synchronous measurement in a digital computer network |
| 12/27/1990 | WO1991000660A1 Synchronization and equalization in a tdma cellular system |
| 12/27/1990 | WO1991000658A1 Method for synchronization in a cellular mobile radio system |
| 12/27/1990 | WO1991000657A1 Mobile assisted handoff |
| 12/27/1990 | WO1990016121A1 Data switching nodes |
| 12/27/1990 | EP0404268A2 Circuit for adapting the rates of two signals |
| 12/27/1990 | EP0404127A2 Signal generator |
| 12/27/1990 | EP0403663A1 Digital signal multiplexer and separator |
| 12/27/1990 | CA1278362C Cross-connection network using time switch |
| 12/26/1990 | CN1011019B Time division multiplexed signalling |
| 12/25/1990 | US4980886 Communication system utilizing dynamically slotted information |
| 12/25/1990 | US4980884 Pulse duration digital multiplexing system with progressively incremented pulse lengths |
| 12/20/1990 | DE3215975C1 Multi-channel directional ratio system - combines available channels on transmitting side in digital form in time-multiplexing framework |
| 12/19/1990 | EP0402973A1 Digital transmission system, transmitter and receiver for use in the transmission system, and record carrier obtained by means of the transmitter in the form of a recording device |
| 12/19/1990 | EP0402918A2 Static image video telephone transmission and reception system |
| 12/19/1990 | EP0402890A2 Intermediary station in a communications transmission link |
| 12/19/1990 | EP0152423B1 Maintenance response signalling arrangement for a digital transmission system |
| 12/18/1990 | US4979169 Method and apparatus for performing format conversion between bit streams |
| 12/18/1990 | US4979166 Multiplexing apparatus |
| 12/18/1990 | US4979100 Communication processor for a packet-switched network |
| 12/18/1990 | CA1278116C Diagnostic method of equipment and system using the same |
| 12/12/1990 | EP0401763A2 Timing signal generating system |
| 12/12/1990 | EP0401238A1 Communication switching system. |
| 12/12/1990 | EP0366788A4 D channel monitor |
| 12/11/1990 | US4977593 Optical communications network |
| 12/11/1990 | US4977580 Timing and carrier recovery in TDMA without preamble sequence |
| 12/11/1990 | US4977558 Demultiplexing device of synchronous multiplexing system |
| 12/11/1990 | CA1277743C Broadband digital transmission systems |
| 12/06/1990 | DE3918263A1 Plesiochronous digital sequence stuffing clock signal extn. method - using bistable counter driven by delayed system clock which is ineffective during active control signal |