Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 3 - Time-division multiplex systems
Patents for H04J 3 - Time-division multiplex systems (63,408)
01/1977
01/25/1977US4005273 Multiplexer offset removal circuit
01/25/1977US4005266 Method and apparatus for synchronizing master and local time base systems
01/18/1977US4004225 Method for synchronizing the pulse frames in time multiplex data transmission via communication satellites
01/18/1977US4004162 Clock signal reproducing network for PCM signal reception
01/18/1977US4004101 Method and device for detecting occupancy of telecommunication channels
01/18/1977US4004100 Group frame synchronization system
01/18/1977US4004099 Time division multiplex switching system
01/18/1977US4004082 Method and system for multiplexing signal for transmission
01/11/1977US4002847 Fault isolation in a serial-looped transmission system
01/11/1977US4002846 Multiplexed digital transmission system with means for channel insertion and extraction
01/11/1977US4002845 Frame synchronizer
01/11/1977US4002844 Device for multiplexing N plesiochronous digital trains
01/11/1977US4002843 Tamper-proof two-way cable system
01/11/1977US4002842 Time multiplex loop telecommunication system
01/11/1977US4002841 Data compression using nearly instantaneous companding in a digital speech interpolation system
01/11/1977US4002839 Method and apparatus for the mutual synchronization of the exchange clock pulse oscillators in switching systems of a PCM time division multiplex telecommunication network
01/11/1977US4002834 PCM synchronization and multiplexing system
01/04/1977US4001693 Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver
01/04/1977US4001505 Speech signal presence detector
12/1976
12/28/1976US4000378 Data communication system having a large number of terminals
12/21/1976US3999162 Time-division multiplex switching circuitry
12/21/1976US3999137 Low pass active filter apparatus
12/21/1976US3999129 Method and apparatus for error reduction in digital information transmission systems
12/14/1976US3997878 Serial data multiplexing apparatus
12/14/1976US3997729 Pseudo-random sequencing for speech predictive encoding communications system
12/14/1976US3997727 Time division multiplexed digital switching apparatus
12/07/1976US3996423 Common control failure alarm apparatus
11/1976
11/30/1976US3995120 Digital time-division multiplexing system
11/30/1976US3995119 Digital time-division multiplexing system
11/30/1976US3995111 Transmit phase control system of synchronization burst for SDMA/TDMA satellite communication system
11/23/1976US3993870 Time multiplex system with separate data, sync and supervision busses
11/16/1976US3992696 Self-checking read and write circuit
11/16/1976US3992580 Discrete control correction for synchronizing digital networks
11/02/1976US3990010 Data transmission systems
11/02/1976US3990009 Method and apparatus for uniquely encoding channels in a digital transmission system
10/1976
10/26/1976US3988674 Frame synchronization in speech predictive encoded communication system
10/26/1976US3988545 Method of transmitting information and multiplexing device for executing the method
10/26/1976US3988528 Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels
10/19/1976US3987251 Time division switching network for switching multirate multiplexed data
10/19/1976US3987250 Data transmission network with independent frame phase
10/19/1976US3987249 System for addressed timemultiplexed telecommunication
10/19/1976US3987248 Digital multiplexing system
10/12/1976US3986126 Serial pulse-code-modulated retiming system
10/12/1976US3985969 Simulated communications system
10/12/1976US3985967 Common control constant shift reframe circuit
10/12/1976US3985965 Digital signal generator
10/12/1976US3985963 Device for ensuring in an intermediate station the transfer and the branch connection of at least one multiplexed numerical data channel
10/12/1976US3985961 Method for the time division multiplex transmission of data
10/12/1976US3985956 Method of and means for detecting voice frequencies in telephone system
10/05/1976US3984829 Circuit arrangement for converting analog signals into PCM signals and PCM signals into analog signals
10/05/1976US3984642 Digital telephone and switching system employing time division multiplex pulse code modulation
10/05/1976US3984641 System for switching and safeguarding data in time-division multiplex switching networks
09/1976
09/21/1976US3982077 Asynchronous multiplexer and demultiplexer combination
09/21/1976US3982076 Network control circuit for a time division switching system
09/21/1976US3982074 Automatic channel assignment circuit
09/14/1976US3980835 Digital network synchronizing system
08/1976
08/31/1976US3978290 Digital private automatic branch exchange
08/31/1976US3978285 Frame synchronizing device
08/24/1976US3976841 Electronic time switching telephone system
08/17/1976US3975686 Loss signal generation for delta-modulated signals
08/10/1976US3974339 Method of transmitting digital information in a time-division multiplex telecommunication network
08/03/1976US3973227 Transmission line for TDM communication system
07/1976
07/27/1976US3971891 Adaptable time division switch
07/20/1976US3970799 Common control signaling extraction circuit
07/20/1976US3970798 Time division multiplex data transmission system
07/20/1976US3970796 Time-division-multiplex arrangement
07/20/1976US3970794 PCM time-division multiplex telecommunication network
07/13/1976US3969678 Band pass filter circuit with automatic bandwidth adjust
07/13/1976US3969617 Multichannel digital modulator
07/13/1976US3969586 Multiplex signal transmission device
06/1976
06/29/1976US3967264 Distribution network power line communication system including addressable interrogation and response repeater
06/29/1976US3967060 Fast reframing arrangement for digital transmission systems
06/29/1976US3967058 Two wires time sharing two way full duplex communication system
06/22/1976US3965457 Digital control processor
06/22/1976US3965366 Electrical devices control system
06/22/1976US3965294 Method of and apparatus for testing transmission line carrying bipolar PCM signals
06/15/1976US3963869 Parity framing of pulse systems
06/08/1976US3962636 Device for converting an incoming analog signal into an outgoing PCM signal
06/08/1976US3962634 Automatic delay compensator
06/01/1976US3961140 Line switch controller for a time-division switching system
05/1976
05/25/1976US3959637 Digital filter
05/25/1976US3959595 Concentrator
05/25/1976US3959594 Arrangement and method for the localized self-control of randomly allotted time slots to audio ports
05/25/1976US3959588 Digital line synchronizer
04/1976
04/20/1976US3952298 Clock gated digital data encoding circuit
04/20/1976US3952254 Timing signal regenerating circuit
04/20/1976US3952162 Time division digital switching network
04/06/1976US3949298 Time shared delta modulation system
03/1976
03/23/1976US3946161 Distributed bit stuff decision transmission
03/16/1976US3944981 Electrical wiring system
03/09/1976US3943296 Method and apparatus for reducing noise in pam time division networks
03/02/1976US3942136 Time multiplex electron beam with modulating means
03/02/1976US3941924 Simplified multi-channel data sensor system
03/02/1976US3941920 Receiver for a still picture broadcasting signal
02/1976
02/24/1976US3940678 Multi-input switching means
02/24/1976US3940567 Multiplex transmission system on-off signal
02/24/1976US3940566 Arrangement for preventing interruptions in a time division multiplex transmission link for transfer of data
02/24/1976US3940563 Reframing method for a carrier system having a serial digital data bit stream
02/24/1976US3940558 Slave station clock
02/17/1976US3939432 FM limiter with input level sensing and TTL level output
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