| Patents for H04J 3 - Time-division multiplex systems (63,408) |
|---|
| 03/13/1979 | US4144414 Network synchronization apparatus |
| 03/13/1979 | US4144410 Multiplex communication system |
| 03/06/1979 | US4143246 Time division line interface circuit |
| 03/06/1979 | US4143242 Analog-digital code converter in a digital telephone switching system |
| 03/06/1979 | US4143241 Small digital time division switching arrangement |
| 02/27/1979 | US4142070 False framing detector |
| 02/27/1979 | US4142069 Time reference distribution technique |
| 02/20/1979 | CA1049151A1 Method and apparatus for synchronizing master and local time base systems |
| 02/13/1979 | US4139737 Time division multiplex transmission system in which electrical power is transmitted to remote terminals from a central unit simultaneously with address and control signals |
| 02/06/1979 | US4138597 PCM time slot exchange |
| 02/06/1979 | US4138596 Equipments for connecting PCM multiplex digital transmission systems having different nominal bit rates |
| 02/06/1979 | CA1048178A1 Digital multiplexing |
| 02/06/1979 | CA1048177A1 Multi-channel digital modulator |
| 01/30/1979 | US4137427 Synchronizing device for the receiver clock of a data transmission system using PSK modulation |
| 01/30/1979 | CA1047658A1 Method for detecting the presence of speech band activity in a telephone connection and a circuit for carrying out such method |
| 01/23/1979 | US4136263 Telephone system having space divided speech channels and a separate time divided data highway |
| 01/23/1979 | CA1047180A1 Arrangement for utilizing all pulses in a channel of a time-division multiplex, pulse-code modulation system |
| 01/16/1979 | US4135166 Master timing generator |
| 01/16/1979 | US4135060 Circuit arrangement for a time division multiplex communication system for the channel by channel combination at the receiving end of information transmitted in the form of multiframes |
| 01/16/1979 | CA1046645A1 Digital line synchronizer |
| 01/09/1979 | US4133981 Time correction circuit for a digital multiplexer |
| 01/09/1979 | US4133980 Data pulse register/sender for a TDM switching system |
| 01/09/1979 | US4133979 Multifrequency sender/receiver in a multi-time slot digital data stream |
| 01/02/1979 | US4132867 Process for the frame synchronization of a time division multiplex system |
| 01/02/1979 | US4132862 Device for the digital multiplexing of quasi-synchronous trains |
| 01/02/1979 | CA1045731A1 Submultiplex transmission of alarm status signals for a time division multiplex system |
| 12/26/1978 | US4131765 Method and means for improving the spectrum utilization of communications channels |
| 12/26/1978 | US4131763 Bit switching of word synchronized data |
| 12/21/1978 | WO1978000018A1 A digital time division switching arrangement |
| 12/19/1978 | CA1044827A1 Fast reframing arrangement for digital transmission systems |
| 12/19/1978 | CA1044789A1 Time-switching electronic telephony system_ |
| 12/12/1978 | US4129755 Frame synchronizing system for TDMA radio communications |
| 12/12/1978 | US4129751 PCM data throttle |
| 12/12/1978 | CA1044386A1 Phase inversion synchronization |
| 12/12/1978 | CA1044385A1 Data and signaling multiplexing in pcm systems via the framing code |
| 12/12/1978 | CA1044339A1 Band pass filter circuit |
| 11/28/1978 | US4127750 Apparatus for transmitting and receiving pulses |
| 11/28/1978 | US4127742 Time division telecommunication system |
| 11/28/1978 | CA1043464A1 Common control variable shift reframe circuit |
| 11/21/1978 | CA1043021A1 Multiplex speech transmission system with speech analysis-synthesis |
| 11/14/1978 | US4125745 Method and apparatus for signaling and framing in a time division multiplex communication system |
| 11/14/1978 | CA1042576A1 Transmit phase control system of synchronization burst for sdma/tdma satellite communication system |
| 11/14/1978 | CA1042353A1 Method and apparatus for error reduction in digital information transmission systems |
| 11/07/1978 | US4124778 Digital frame synchronizing circuit |
| 11/07/1978 | US4124777 Signal exchange system in an integrated services digital network |
| 10/31/1978 | CA1041682A1 Coupling device for connection between pam time division telephone exchange and a pcm time division transmission system |
| 10/31/1978 | CA1041671A1 Serial digital bit stream code detector |
| 10/31/1978 | CA1041654A1 Multiplexer commutated high pass filter |
| 10/24/1978 | US4122311 Electronic multiplexer for parallel, bi-directional scanning thermal imaging system |
| 10/24/1978 | US4122309 Sequence generation by reading from different memories at different times |
| 10/24/1978 | CA1041236A1 Common control framing detector |
| 10/24/1978 | CA1041235A1 Method and circuit arrangement for synchronizing the pulse frames in data transmission by the time multiplex process via telecommunication satellites |
| 10/17/1978 | US4121217 Data transmission network interface unit |
| 10/17/1978 | US4121057 Frame synchronizing device |
| 10/17/1978 | US4121056 Time division digital multiplexer apparatus |
| 10/17/1978 | US4121055 Integrated programmable commutation and signal conditioning circuit |
| 10/17/1978 | US4121054 Regenerative line access module |
| 10/17/1978 | CA1040761A1 Data transmission network with independent frame phase |
| 10/17/1978 | CA1040731A1 Time division digital switching network |
| 10/10/1978 | CA1040330A1 Method and apparatus for reducing noise in pam time division networks |
| 10/10/1978 | CA1040327A1 Active hybrid sidetone producing circuitry for sidetoneless telephone |
| 10/03/1978 | CA1039867A1 System for addressed timemultiplexed telecommunication |
| 09/26/1978 | CA1039421A1 Subscriber digital multiplexing system with time division concentration |
| 09/26/1978 | CA1039420A1 Detector for coded speech signals |
| 09/19/1978 | US4115662 One way data transmission system |
| 09/12/1978 | US4114141 Digital communication system for transmitting digital information between a central station and a number of remote stations |
| 09/12/1978 | US4113987 Method for improvement of crosstalk attenuation between adjacent channels in a time division multiplex system |
| 09/12/1978 | CA1038485A1 Multiplexer offset removal circuit |
| 09/05/1978 | US4112498 Digital correlation receiver |
| 09/05/1978 | CA1038092A1 Alarm arrangement for a time-division multiplex, pulse-code modulation carrier system |
| 09/05/1978 | CA1038091A1 Method of transmitting information and multiplexing device for executing the method |
| 08/29/1978 | US4110705 Noise reduction method and apparatus for companded delta modulators |
| 08/29/1978 | US4110563 Traffic sensitive modulation system |
| 08/29/1978 | US4110562 Service generator for generating a plurality of tones |
| 08/29/1978 | CA1037610A2 Fallsoft peripheral exchange |
| 08/29/1978 | CA1037599A1 Time-division pulse-multiplex digital electric signal switching circuit arrangement |
| 08/22/1978 | US4109204 Apparatus and method for wideband communication with suppression of harmonic interference |
| 08/22/1978 | US4109109 Method and apparatus for detecting the presence of signal components of predetermined frequency in multifrequency pcm signal |
| 08/22/1978 | CA1037169A1 T.d.m. exchange systems |
| 08/22/1978 | CA1037168A1 Device for converting an incoming analog signal into an outgoing pcm signal |
| 08/22/1978 | CA1037167A1 Synchronisation system |
| 08/22/1978 | CA1037136A1 Electric resonant transfer filter |
| 08/15/1978 | US4107608 Method and apparatus for burst synchronization in a time division multiple access communication system |
| 08/15/1978 | US4107469 Multiplex/demultiplex apparatus |
| 08/15/1978 | US4107468 Digital train processing device |
| 08/15/1978 | US4107459 Data processor analyzer and display system |
| 08/15/1978 | CA1036726A1 Carrier concentrator system and method |
| 08/08/1978 | US4105869 Time-division multiplex digital transmission system with intermediate stations adapted to transit insert and extract digital channels |
| 07/25/1978 | US4103288 Method for data transmission and a system for carrying out the method |
| 07/25/1978 | US4103111 High speed electron beam semiconductor digital multiplexer |
| 07/25/1978 | US4103109 Ccd multiplexer |
| 07/18/1978 | US4101739 Demultiplexer for originally synchronous digital signals internested word-wise |
| 07/11/1978 | US4100377 Packet transmission of speech |
| 07/04/1978 | US4099029 Asynchronous pcm common decoding apparatus |
| 07/04/1978 | US4099028 Asynchronous multiplexer-demultiplexer |
| 06/27/1978 | US4097695 Asynchronous addressable multiplex system |
| 06/20/1978 | US4096354 Apparatus for distinguishing between failures in a digital transmission network |
| 06/13/1978 | US4095053 Quasi-pulse stuffing synchronization |
| 06/13/1978 | US4095052 Digital speech interpolation trunk priority rotator |
| 06/13/1978 | US4095051 Demultiplexer circuit |