| Patents for H04B 1 - Details of transmission systems, not covered by a single one of groups; Details of transmission systems not characterised by the medium used for transmission (188,568) |
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| 01/14/1987 | EP0207964A1 Broadcast stereo companding system and apparatus. |
| 01/14/1987 | EP0207948A1 Internally register-modelled, serially-bussed radio system. |
| 01/13/1987 | US4637073 Transmit/receive switch |
| 01/13/1987 | US4637070 UHF mixing circuit having π configured impedance converter |
| 01/13/1987 | US4637066 Noise blanking signal generator for AM radio |
| 01/13/1987 | US4637065 Broadband solid state antenna switch |
| 01/13/1987 | US4637049 Car-mounted audio system |
| 01/13/1987 | US4637044 Phase selectable circuit for use in a stereo demodulator |
| 01/13/1987 | US4637022 Internally register-modelled, serially-bussed radio system |
| 01/13/1987 | US4636972 Method and apparatus for digital filtering |
| 01/13/1987 | US4636741 Multi-level power amplifying circuitry for portable radio transceivers |
| 01/13/1987 | CA1216666A1 Double conversion tuner for broadcast and cable television channels |
| 01/10/1987 | CN85101812A Shf receiver |
| 01/10/1987 | CN85101153A Alternating communication channel switchover system |
| 01/07/1987 | EP0207348A1 Two-wire amplifier, two-wire-four-wire amplifier or four-wire circuit with amplification |
| 01/06/1987 | US4635298 Interference wave detection circuit for use in radio receiver |
| 01/06/1987 | US4635296 Wide bandwidth ultra high stability FM telemetry transmitter |
| 01/06/1987 | US4635274 Bidirectional digital signal communication system |
| 01/06/1987 | US4635248 Start-stop synchronous data transmission system with a reduced redundancy |
| 01/06/1987 | US4635221 Frequency multiplexed convolver communication system |
| 01/06/1987 | US4635217 Noise threshold estimator for multichannel signal processing |
| 01/06/1987 | US4635121 Arrangement for the programmable control of a radio and/or television receiver |
| 01/06/1987 | US4635110 Portable video and audio equipment holder for use in an automobile |
| 12/31/1986 | CN85103998A High-speed digital loop transceiver |
| 12/30/1986 | US4633520 Prescaler input circuit |
| 12/30/1986 | US4633517 Circuit for decoding traffic information message tone signals |
| 12/30/1986 | US4633515 Emergency broadcast alert detector |
| 12/30/1986 | US4633511 Signal transmission and reception system |
| 12/30/1986 | US4633510 Electronic circuit capable of stably keeping a frequency during presence of a burst |
| 12/30/1986 | US4633497 Separation control circuit |
| 12/30/1986 | US4633496 Low-pass filter circuit |
| 12/30/1986 | US4633464 Control signalling arrangement for a digital transmission system |
| 12/30/1986 | US4633315 Receiver for RF-signals comprising a pair of parallel signal paths |
| 12/30/1986 | US4633313 Method and apparatus for transferring data for digitally controlling video equipment |
| 12/30/1986 | US4633173 Apparatus for measuring a signal level |
| 12/30/1986 | US4633046 Adaptive echo canceller |
| 12/30/1986 | EP0206923A1 Radio control transmitter, in particular for a foresting tractor or a similar vehicle |
| 12/30/1986 | EP0206746A2 Circuit arrangements for modifying dynamic range using series and parallel circuit techniques |
| 12/30/1986 | EP0206732A2 Circuit arrangements for modifying dynamic range using variable combining techniques |
| 12/30/1986 | EP0206731A2 Circuit arrangements for modifying dynamic range using action substitution and superposition techniques |
| 12/30/1986 | EP0206247A2 PLL frequency synthesizer |
| 12/30/1986 | EP0206188A2 Device for matching a transmission line-mounted bidirectional amplifier circuit with the transmission line |
| 12/30/1986 | EP0205460A1 Receiver having a self biasing direct coupled data limiter |
| 12/30/1986 | CA1216057A1 Video signal recording and reproducing system with automatic channel and time selection |
| 12/30/1986 | CA1216030A2 Universal paging device with power conservation |
| 12/23/1986 | US4631746 Compression and expansion of digitized voice signals |
| 12/23/1986 | US4631737 Self biasing direct coupled data limiter |
| 12/23/1986 | US4631736 Portable transmitter which conserves transmitter power by storing charges from previous pulses |
| 12/23/1986 | US4631735 Coded modulation system with feedback |
| 12/23/1986 | US4631719 Channel looping apparatus for failure analysis |
| 12/23/1986 | US4631640 Portable radio device for protecting a radio circuit from static electricity |
| 12/23/1986 | US4631499 Phase-locked loop for a directly mixing synchronous AM-receiver |
| 12/23/1986 | US4631496 Battery saving system for a frequency synthesizer |
| 12/23/1986 | CA1215746A1 General purpose data control terminal |
| 12/23/1986 | CA1215745A1 Transmitter power control circuit |
| 12/17/1986 | EP0205055A2 Channel selection in a multichannel access radio communication system without occurrence of interference |
| 12/17/1986 | EP0204770A1 Data transmission system including adaptive hybrid control. |
| 12/17/1986 | CN86201054U Multiplex audio signal selector |
| 12/16/1986 | US4630315 Polar loop transmitter |
| 12/16/1986 | US4630300 Front-end processor for narrowband transmission |
| 12/16/1986 | US4630299 Digital circuit for decoding digitized, demodulated FM stereo signals |
| 12/16/1986 | US4630283 Fast acquisition burst mode spread spectrum communications system with pilot carrier |
| 12/16/1986 | US4630282 In an AM radio system |
| 12/16/1986 | US4630265 Method and apparatus for selecting for use between data buses in a redundant bus communication system |
| 12/16/1986 | US4630257 Duplex speech transmission method and a system therefor |
| 12/16/1986 | US4630056 Control system for antenna of receiving equipment installed on moving body |
| 12/16/1986 | US4630034 Sampling frequency converting apparatus |
| 12/16/1986 | US4629995 Variable emphasis circuit |
| 12/16/1986 | US4629837 Hand-held battery-powered radio receiver |
| 12/16/1986 | US4629329 Electronic wristwatch |
| 12/10/1986 | EP0204570A2 Digital mixing apparatus |
| 12/09/1986 | US4628539 In a receiver |
| 12/09/1986 | CA1215145A1 Tv tuner oscillator with feedback for more low frequency power |
| 12/09/1986 | CA1215127A1 Receiver for multicarrier signals protected from unwanted signals |
| 12/09/1986 | CA1215124A1 Changeover device for selecting one modulator out of two and connecting it into a transmitter |
| 12/04/1986 | WO1986007223A1 Ensemble modem structure for imperfect transmission media |
| 12/03/1986 | EP0203819A2 Cordless telephone system |
| 12/03/1986 | EP0203781A1 Battery-powered mobile communications apparatus having transmitter reset function |
| 12/03/1986 | EP0203668A2 Universal remote control unit |
| 12/02/1986 | US4627107 Radio communications system including vehicle mounted and hand-held radio devices |
| 12/02/1986 | US4627102 Squelch circuit |
| 12/02/1986 | US4627099 Communication apparatus for transmitting and receiving signals on different frequency bands |
| 12/02/1986 | US4626909 Video signal recording and reproducing system with automatic channel and time selection |
| 12/02/1986 | US4626848 Programmable functions for reconfigurable remote control |
| 12/02/1986 | US4626847 Remote control transmitter system |
| 12/02/1986 | US4626796 Digital apparatus and method for programmably phase shifting an audio tone |
| 12/02/1986 | US4626678 Light detecting circuit |
| 12/02/1986 | CA1214862A1 Distributed switched component audio/video system |
| 12/02/1986 | CA1214860A1 Remote control transmitter arrangement for one or more television devices |
| 12/01/1986 | EP0148879A4 Squelch circuit. |
| 11/26/1986 | CN86103406A Ensemble modem structure for imperfect transmission media |
| 11/25/1986 | US4625331 Automatic frequency control system or an SSB receiver |
| 11/25/1986 | US4625319 Narrow band, SSB, FM transmitter |
| 11/25/1986 | US4625286 Time encoding of LPC roots |
| 11/25/1986 | US4625263 Illuminated control panel for communication apparatus, particularly for car radio or radio-recorder combination |
| 11/21/1986 | EP0152430A4 Apparatus and methods for coding, decoding, analyzing and synthesizing a signal. |
| 11/20/1986 | WO1986006897A1 Telecontrol unit for leisure electronic apparatuses |
| 11/20/1986 | EP0202072A2 Frequency synthesizer |
| 11/20/1986 | EP0201986A2 Intermodulation suppressing circuit |
| 11/20/1986 | EP0201487A1 Adapter for car radio |