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)
03/1982
03/30/1982CA1121057A1 Noise reduction method and apparatus for companded delta modulators
03/24/1982EP0048129A1 Digital concentrator
03/17/1982EP0047590A2 Method of and apparatus for echo detection in voice channel signals
03/17/1982EP0047589A1 Method and apparatus for detecting speech in a voice channel signal
03/17/1982EP0047588A2 Mitigation of noise signal contrast in digital speech interpolation transmission system
03/16/1982US4320505 Processing apparatus for data rate reduction
03/16/1982US4320504 Mechanism for synchronization of data ports in TDMA communication
03/16/1982US4320502 Distributed priority resolution system
03/16/1982CA1120120A1 Frame search control for digital transmission system
03/09/1982US4319353 Priority threaded message burst mechanism for TDMA communication
03/09/1982US4319352 TIM Bus structure
03/09/1982US4319347 Seismic method and system of improved resolution and discrimination
02/1982
02/23/1982US4317195 Method of and device for reducing speech-reproduction irregularities in packet-switching telecommunication systems
02/23/1982CA1118920A1 Tdma intertransponder communication
02/16/1982US4316285 Framing circuit for digital receiver
02/16/1982US4316284 Frame resynchronization circuit for digital receiver
02/16/1982US4316061 Minimal delay rate-change circuits
02/09/1982US4315330 Multiple data rate testing of communication equipment
02/02/1982US4314368 Receiver for pulse code multiplexed signals
02/02/1982US4314109 Synchronization system for key telephone system
02/02/1982US4314100 Data detection circuit for a TASI system
02/02/1982CA1117674A2 Signal processor for use with a telephone system and digital transmission system
02/02/1982CA1117671A1 Method and device for synchronizing digital transmissions via satellite
02/02/1982CA1117670A1 Portable multiplex bus exerciser
01/1982
01/26/1982US4313198 Synchronous demultiplexer with elastic bit store for TDM/PCM telecommunication system
01/26/1982US4313193 Time division multiplex transmission apparatus
01/19/1982US4312063 TDM Data reorganization apparatus
01/12/1982US4310922 Bit sampling multiplexer apparatus
01/12/1982US4310921 Peak-level detector for digitized signals in PCM telecommunication system
01/08/1982EP0033337A4 Digital loop synchronization circuit.
01/06/1982EP0043151A1 Device for the treatment of serial information provided with synchronization words
01/06/1982EP0043056A1 Process for the detection of speech in a telephone circuit signal, and speech detector therefor
01/06/1982EP0042976A1 Bi-directional communication system for a two wire digital telephone link
01/05/1982US4309764 Technique for increasing the rain margin of a satellite communication system
12/1981
12/29/1981US4308613 Simplex, party-line electromagnetic data packet transmission system with a self seeking alternate routing capability
12/24/1981WO1981003729A1 Synchronous/asynchronous data communication arrangement
12/23/1981EP0042280A1 Asynchronous multiplex system
12/23/1981EP0042229A1 Digital transmission systems
12/22/1981US4307462 Synchronous demultiplexer with elastic dual-memory bit store for TDM/PCM telecommunication system
12/22/1981US4307461 Call processor for a satellite communications controller
12/16/1981EP0041895A1 Method and device for the transmission of digital data packets
12/15/1981US4306304 Digital loop synchronization circuit
12/09/1981EP0041429A1 Process and device for the synchronization of digital signals
12/09/1981EP0041121A1 Method of transmitting additional information
12/08/1981US4305045 Phase locked loop clock synchronizing circuit with programmable controller
12/02/1981EP0041001A1 Bit-by-bit time-division digital switching networks
12/01/1981US4304000 Device for supervising a transmultiplexer
12/01/1981US4303803 Digital speech interpolation system
12/01/1981CA1113618A1 Fdm/tdm transmultiplexer
12/01/1981CA1113593A1 Signal monitoring and controlling system in a time division switching system
12/01/1981CA1113545A1 Simulcast transmission system having phase-locked remote transmitters
11/1981
11/25/1981EP0040351A1 Synchronisation arrangement for a time division multiplex system
11/24/1981US4302841 Motor vehicle electrical system
11/24/1981US4302839 Multiplex unit with means for responding to signal loss in one or more channels
11/24/1981US4302838 Apparatus for synchronizing an input signal with a time multiplexed signal
11/24/1981US4302831 Method and circuit arrangement for clock synchronization in the transmission of digital information signals
11/17/1981US4301534 Framing circuit for time multiplexed data
11/17/1981US4301533 Technique for increasing the rain margin of a TDMA satellite communication system
11/17/1981US4301532 Arrangement for transmitting digital data signals
11/17/1981CA1112775A1 Frame synchronisation in a t.d.m. system
11/17/1981CA1112725A1 Circuit for separating a composite stream of data and clock pulses
11/11/1981EP0030551A4 A technique for increasing the rain margin of a communication system.
11/10/1981US4300232 Self synchronized multiplexer/demultiplexer
11/10/1981US4300161 Time compression multiplexing of video signals
11/10/1981US4300100 Circuit arrangement for correlating several isofrequentially stepped counting chains
11/03/1981US4298987 Memory-based frame synchronizer
11/03/1981US4298979 Decoding TIM bus structure
11/03/1981US4298977 Broadcast and alternate message time slot interchanger
11/03/1981CA1111972A1 Control system using time division multiplexing
11/03/1981CA1111971A2 Time assignment speech interpolation communication system with variable delays
10/1981
10/29/1981WO1981003095A1 Digital subscriber communication system
10/14/1981EP0037770A1 Transmission system for digital data packets using a particular type of synchronization words
10/14/1981EP0037519A1 Mobile radio network with synchronization of the whole network
10/13/1981US4295223 Digital signal/noise ratio amplifier apparatus for a communication system
10/13/1981US4295217 Apparatus to reduce the effect of a mid-talkspurt freeze-out
10/13/1981CA1110744A1 Time-division multiplex communication system for connecting two-wire line circuits in time-division multiplex
10/06/1981US4293947 Information handling system
09/1981
09/30/1981EP0036605A1 PCM system with transmitter side scrambler and receiver side descrambler
09/30/1981EP0036596A1 Device for the interleaving of the writing and reading times of information in a memory of a synchronization unit
09/29/1981US4292683 Guard band reduction in open loop TDMA communications
09/29/1981CA1109972A1 Fixed speech buffer memories for signalling without an order wire
09/23/1981EP0036146A1 Mobile radio network
09/16/1981EP0035795A2 Stuff synchronization device with reduced sampling jitter
09/15/1981US4290135 Circuit arrangement for receiving digital intelligence signals in a digital switching center for PCM-time-division multiplex communication networks
09/15/1981US4290134 Multiplex information handling system
09/15/1981CA1109169A1 Method and apparatus for signalling and framing in a tdm communication system
09/15/1981CA1109168A1 T.d.m. transmission systems
09/15/1981CA1109167A1 Time assignment speech interpolation communication system with variable delays
09/09/1981EP0035233A2 Method and apparatus for multiplexing data of a plurality of data ports in ground stations of a TDMA satellite communication system
09/09/1981EP0035181A2 Arrangement for the individual channel release and locking of telephone channels in signal converters of a time division multiplex system for pulse code modulation
09/09/1981EP0035061A1 Process and device for multiplexing a data signal and several secondary signals, associated demultiplexing process and device, and interface transmitter-receiver therefor
09/02/1981EP0034776A1 Diagnostic circuit for PCM connection networks
09/01/1981US4287593 Preservation of equal time delays for different paths through digital communications repeaters
08/1981
08/26/1981EP0034355A1 Interface for linking two data processing systems
08/19/1981EP0033811A1 Method of compressing signalling information transmitted in a multiplexed digital PCM information stream
08/18/1981US4285064 TDMA Satellite communication system
08/18/1981US4285057 Sampling gate for TDM telecommunication system
08/18/1981US4284850 Digital memory providing fixed and variable delays in a TASI system
08/12/1981EP0033337A1 Digital loop synchronization circuit.
08/11/1981US4283786 Digital transmission system
1 ... 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635