Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 99 - Subject matter not provided for in other groups of this subclass
Patents for H04J 99 - Subject matter not provided for in other groups of this subclass (7,250)
02/1995
02/09/1995CA2167502A1 Dynamic radio communications system
01/1995
01/24/1995CA1334114C Apparatus and method for converting a frequency division multiplex to a time division multiplex
09/1994
09/20/1994US5349585 Method for transmitting two digital signals which are independent of one another
07/1994
07/12/1994US5329522 Space-division multiplex communication method of executing multiplex communication
05/1994
05/26/1994WO1994011989A1 Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto
04/1994
04/05/1994CA1328308C Switched optical network
03/1994
03/23/1994EP0588701A1 Method and device for simultaneous transmission of two heterochronous digital signals via the same link
02/1994
02/17/1994DE4226838A1 Optical broadband information transmission system for communications - transmits range of TV signals via multiplexing central station over optical line to subscriber units
01/1994
01/18/1994US5280537 Digital communication system using superposed transmission of high speed and low speed digital signals
12/1993
12/09/1993DE4223639C1 Transmission system for 2 independent digital signals - uses encoder supplied with digital signals at pulse channel and signal channel respectively
09/1993
09/22/1993EP0561435A2 Information transfer system, a transmitter, a receiver and a record carrier for use in the system
09/22/1993CN1076568A Information transfer system a transmitter, a receiver and a record carrier for use in the system
08/1993
08/04/1993EP0553841A2 Method and apparatus for digital signal transmission using orthogonal frequency division multiplexing
06/1993
06/29/1993CA1319769C Digital added main line system
06/16/1993EP0235257B1 Multiplexed digital packet telephone communication method
06/09/1993EP0545225A2 Digital communication system using superposed transmission of high speed and low speed digital signals
09/1992
09/01/1992US5144465 Switched optical network
08/1992
08/26/1992EP0295299B1 Electronically tuneable fiber-optic receiver for narrow band microwave signal reception
07/1992
07/29/1992EP0484330A4 Digital added main line system
05/1992
05/14/1992WO1992008305A1 Multichannel data compressor
05/13/1992EP0484330A1 Digital added main line system
01/1992
01/28/1992CA1295059C Optical demultiplexing
11/1991
11/21/1991EP0263175A4 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data
10/1991
10/16/1991EP0451564A2 Time-division multiplex communication method with rotating transmission signal
09/1991
09/24/1991US5051993 Mixed modulation level communication system
07/1991
07/02/1991US5029240 Electronically tuneable fiber-optic receiver for narrow band microwave signal reception
05/1991
05/21/1991US5018136 Multiplexed digital packet telephone system
04/1991
04/18/1991WO1990011675A3 Mixed modulation level communication system
02/1991
02/19/1991US4995036 Multichannel data compressor
02/12/1991CA1280228C Digital radio transmission system
02/07/1991WO1991001600A1 Digital added main line system
02/06/1991CN1049079A Digital added main line system
01/1991
01/29/1991US4989130 System for determining and storing valid status information received from cross coupled unit
12/1990
12/19/1990EP0152423B1 Maintenance response signalling arrangement for a digital transmission system
10/1990
10/18/1990WO1990011675A2 Mixed modulation level communication system
09/1990
09/04/1990US4953954 Phase-conjugate communication using mutually incoherent laser beams
09/04/1990CA1273697A1 Multiplexed digital packet telephone system
05/1990
05/16/1990CN1008041B Alternating communication channel switchover system
12/1989
12/13/1989EP0345985A2 Communication circuit connection
08/1989
08/02/1989EP0215804B1 Muldex for optical transmission systems
06/1989
06/28/1989CN1004677B Two wires communication system
06/01/1989WO1989005085A1 Switched optical network
06/01/1989WO1989005071A1 Apparatus and method for converting a frequency division multiplex to a time division multiplex
05/1989
05/31/1989EP0318334A1 Apparatus and method for converting a frequency division multiplex to a time division multiplex
05/24/1989EP0317352A1 Switched optical network
04/1989
04/12/1989EP0137828B1 Ferrite multiplexing and modulator assembly for beacon tracking system
01/1989
01/17/1989US4799252 Digital radio transmission system
12/1988
12/21/1988EP0295299A1 Electronically tuneable fiber-optic receiver for narrow band microwave signal reception.
11/1988
11/01/1988US4782485 Multiplexed digital packet telephone system
07/1988
07/26/1988US4760275 Communication system for vehicle
07/14/1988WO1988005234A1 Electronically tuneable fiber-optic receiver for narrow band microwave signal reception
05/1988
05/11/1988CN87200992U Multiplex asychronous communication interface
04/1988
04/13/1988EP0263175A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data
04/12/1988US4737787 Two-wire communication system
02/1988
02/23/1988US4727534 Timing and carrier recovery in dual polarization communications systems
02/10/1988CN86210656U Call and communication device using splitting antenna circuit
01/1988
01/21/1988EP0235257A4 Multiplexed digital packet telephone communication method.
01/12/1988US4719616 Communication method and apparatus
12/1987
12/01/1987CA1229889A1 Maintenance response signalling arrangement for a digital transmission system
10/1987
10/22/1987WO1987006368A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data
09/1987
09/09/1987EP0235257A1 Multiplexed digital packet telephone communication method.
07/1987
07/30/1987EP0152423A4 Maintenance response signalling arrangement for a digital transmission system.
05/1987
05/13/1987CN86107097A Two wires communication mode
04/1987
04/22/1987EP0219120A2 Two-wire communication system
02/1987
02/26/1987WO1987001254A1 Multiplexed digital packet telephone system
02/25/1987EP0211460A2 Digital radio transmission method
01/1987
01/10/1987CN85101153A Alternating communication channel switchover system
07/1986
07/29/1986CA1208713A1 Ferrite modulator assembly for beacon tracking system
07/17/1986WO1986004202A1 Muldex for optical transmission systems
06/1986
06/10/1986CN85100039A Digital communication multiplex transmission system for level multiplex
04/1986
04/29/1986US4586186 Maintenance response signalling arrangement for a digital transmission system
11/1985
11/19/1985US4554669 Frequency jump radiocommunications system with interburst redundancy
09/1985
09/04/1985EP0053623B1 Data multiplexing apparatus and method, and receiver for use therewith
09/03/1985US4539681 Ferrite modulator assembly for beacon tracking system
08/1985
08/28/1985EP0152423A1 Maintenance response signalling arrangement for a digital transmission system.
06/1985
06/04/1985US4521878 Data transmitting-receiving system
02/1985
02/28/1985WO1985000946A1 Maintenance response signalling arrangement for a digital transmission system
10/1984
10/23/1984US4479213 Transmission method for transmitting voice and data information over telephone line and device for implementing said method
09/1984
09/19/1984EP0119140A1 Method and apparatus for transcoding binary information for time domain multiplex transmission
09/13/1984WO1984003598A1 Method and devices for transcoding binary informations for timedivision multiplex transmission
09/04/1984CA1173927A1 Communication system and method
08/1984
08/30/1984WO1984003360A1 Ferrite multiplexing and modulator assembly for beacon tracking system
08/21/1984CA1173148A1 Television compressed audio
08/14/1984US4466097 Control signal-multiplexing circuit
07/1984
07/17/1984CA1171170A1 Digital signal processing system
06/1984
06/26/1984US4457013 Of a telecommunication system
05/1984
05/29/1984CA1168391A1 Demultiplexing plural data streams
05/22/1984CA1167985A1 Multiplexed signal receiver
05/08/1984CA1167184A1 Synchronous/asynchronous data communication arrangement
03/1984
03/13/1984CA1163686A1 Digital device for discriminating digitized speech/data signals
02/1984
02/21/1984US4433310 Modulator-demodulator for four level double amplitude modulation on quadrature carriers
02/21/1984CA1162667A1 Bandwidth reduction method and structure for combining voice and data in a pcm channel
01/1984
01/31/1984US4429332 Television compressed audio
01/10/1984US4425642 Simultaneous transmission of two information signals within a band-limited communications channel
01/04/1984EP0097579A1 Frequency hopping radiocommunication system with redundancy between frequency steps
11/1983
11/22/1983US4417283 Digital signal processing system
10/1983
10/18/1983US4410979 Multiplexed signal receiver
09/1983
09/06/1983US4403322 Voice signal converting device
08/1983
08/10/1983EP0085614A2 Data transmitting-receiving system
08/03/1983EP0020669B1 A process and an apparatus for transferring binary information representing at least two parameters
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