| 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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| 03/18/1992 | EP0475297A2 Remote control apparatus for audio reproduction apparatus |
| 03/18/1992 | EP0475196A2 Method for processing audio signals in a sub-band coding system |
| 03/18/1992 | EP0475188A1 Method and apparatus for noise reduction in FM or PM receivers |
| 03/18/1992 | EP0474925A1 Holographic communications device and method |
| 03/18/1992 | CN1059627A Biasing networks for balanced mixers |
| 03/17/1992 | US5097507 Fading bit error protection for digital cellular multi-pulse speech coder |
| 03/17/1992 | US5097500 Radio telephone system which writes an identification code via radio link when units are electrically connected |
| 03/17/1992 | US5097485 Hf high data rate modem |
| 03/17/1992 | US5097467 Switching trigger detection circuit in line switching apparatus |
| 03/17/1992 | US5097249 Power status detecting apparatus |
| 03/17/1992 | US5097221 Adaptive filter technique for suppression of wideband or offset narrowband radio frequency interference |
| 03/17/1992 | US5097188 Motorized automobile antenna control device |
| 03/17/1992 | CA1297535C Radio receiver having automatic bandwidth control during tuning |
| 03/11/1992 | WO1992004782A1 Radio telephone system supporting busy and out-of-range functions |
| 03/11/1992 | EP0474615A2 D.C. offset compensation in a radio receiver |
| 03/11/1992 | EP0474491A2 Method and apparatus for processing a received wireless data signal |
| 03/11/1992 | EP0474488A2 Clock recovery for a wireless local area network station |
| 03/11/1992 | EP0473981A2 Portable data processing device capable of transmitting processed data on a radio by reflection of unmodulated carrier signal externally applied |
| 03/11/1992 | EP0473776A1 Communication system using spread spectrum and leaky transmission line |
| 03/11/1992 | EP0403492A4 Bandswitching a two-way radio having a pll |
| 03/11/1992 | EP0142503B2 Transceiver with controller for multiple function switch |
| 03/11/1992 | CN2098766U Stereo radio earphone |
| 03/11/1992 | CN2098765U Satellite signal power distributor with feeding multiplexer |
| 03/11/1992 | CN2098764U Dual-purpose l-band receiver for satellite broadcast and tv |
| 03/11/1992 | CN1059436A Wire broadcasting method and its system |
| 03/11/1992 | CN1015854B Automatic intermediate frequency tangent lock control circuit |
| 03/11/1992 | CN1015852B Frequency-changing stage having precise closed-loop control of amplitude of injection signal thereof |
| 03/11/1992 | CN1015851B Adaptive scanning method |
| 03/11/1992 | CN1015850B Double ring automatic power level control circuit for transmitter |
| 03/10/1992 | US5095542 Apparatus for controlling transmission output level for burst signal |
| 03/10/1992 | US5095541 Radio telephone apparatus |
| 03/10/1992 | US5095540 Hole placement and fill system based on category selection |
| 03/10/1992 | US5095536 Direct conversion receiver with tri-phase architecture |
| 03/10/1992 | US5095534 Radio receiver having improved signal-to-noise ratio for receiving voice and data signals |
| 03/10/1992 | US5095493 Wireless alarm system |
| 03/10/1992 | US5095382 Wireless headphone |
| 03/10/1992 | US5095308 Transceiver with battery saver and method of using same |
| 03/10/1992 | US5095177 Rf sealed radio housing |
| 03/10/1992 | CA1297151C Portable radio battery pack with on-off switch |
| 03/05/1992 | DE4026963A1 Protection circuit for car radio - has switch contact controlled by timer between on-board supply line and radio voltage line |
| 03/04/1992 | WO1992004780A1 Ultra-small down-converter for satellite communication |
| 03/04/1992 | EP0473569A2 Contactless, inductive data transmission system |
| 03/04/1992 | EP0473465A1 Power saving arrangement and method in portable cellular telephone system |
| 03/04/1992 | EP0473373A2 Calibration system for direct conversion receiver |
| 03/04/1992 | EP0473367A1 Digital signal encoders |
| 03/04/1992 | EP0473120A2 Double super-heterodyne tuner |
| 03/04/1992 | EP0473096A2 Station for digital communication system and surface acoustic wave module |
| 03/04/1992 | EP0472865A2 FM car radio |
| 03/04/1992 | EP0472758A1 Method of transmission of digital data over a time-variant channel |
| 03/04/1992 | EP0472752A1 Remote control apparatus with spread spectrum transmission link |
| 03/04/1992 | EP0472621A1 Method and apparatus for reducing intermodulation distortion |
| 03/04/1992 | EP0472581A1 Portable personal reception and display device for information transmitted via radio, combined with a watch |
| 03/04/1992 | CN2098126U Automatic control protective radio audio amplifier |
| 03/04/1992 | CN2098125U Emergency cooling device for cerment transmitting tube |
| 03/04/1992 | CN1059247A Interrupting video if signal path during fm. radio mode in television receiver |
| 03/04/1992 | CN1059246A Fixed rf agc of television tuner for fm reception in television receiver |
| 03/04/1992 | CN1059240A Communication signal having time domain dilat component |
| 03/03/1992 | US5093922 Receiving apparatus for receiving a bs-if signal converted into a superhigh band or uhf band |
| 03/03/1992 | US5093921 Initialization technique and apparatus for set top converters |
| 03/03/1992 | US5093841 Clock acquisition in a spread spectrum system |
| 03/03/1992 | US5093840 Adaptive power control for a spread spectrum transmitter |
| 03/03/1992 | US5093744 Remote commander |
| 03/03/1992 | US5093658 Communication device capable of ambient sound level controlled transmissions |
| 03/03/1992 | US5092788 Self-contained universal accessory connector and seal |
| 03/03/1992 | CA1296790C Supervised, interactive alarm reporting system |
| 03/03/1992 | CA1296776C Automatic if tangent lock control circuit |
| 03/03/1992 | CA1296774C Portable radiotelephone with control switch disabling |
| 03/01/1992 | WO1992004773A1 Transient suppression circuit for a time domain duplex transceiver |
| 03/01/1992 | WO1992004765A2 Frequency modulated synthesizer using low frequency offset mixed vco |
| 02/28/1992 | CA2043118A1 Power saving arrangement and method in portable cellular telephone system |
| 02/27/1992 | DE4026399A1 Receiver remote controller with memory for selected programmes - which can be viewed at preset signalled by acoustic alarm and subject to supervisory authority |
| 02/26/1992 | EP0472510A2 Logarithmic amplifier/detector delay compensation |
| 02/26/1992 | EP0472472A1 Arrangement for the remote dialogue between a station and one or several portable objects |
| 02/26/1992 | EP0472460A1 Method and arrangement for digital radio-telephony, especially cellular radio-telephonic communication with mobiles |
| 02/26/1992 | EP0472400A1 Remote controller |
| 02/26/1992 | EP0472119A2 Interrupting the video IF signal path during FM radio mode in a television receiver |
| 02/26/1992 | EP0471952A2 Transmitter- and multiple conversion superhet receiver for a telecommunication device |
| 02/26/1992 | EP0471799A1 Time domain radio transmission system. |
| 02/26/1992 | CN2097495U Household remote-controller for electric lamp |
| 02/26/1992 | CN2097480U Power line carrier telephone |
| 02/25/1992 | WO1992003892A1 Dual mode automatic gain control |
| 02/25/1992 | US5091956 Adaptive high pass filter having cut-off frequency controllable responsive to input signal and operating method therefor |
| 02/25/1992 | US5091943 Fm stereo receiving device |
| 02/25/1992 | US5091930 Enhancement of a personal emergency response system |
| 02/25/1992 | US5091919 Transmitter arrangement for digitally modulated signals |
| 02/25/1992 | US5091918 Equalizers |
| 02/25/1992 | US5091902 Telecommunications transmission security arrangement |
| 02/25/1992 | US5091796 Optical communication system having an improved protection line switching mechanism |
| 02/25/1992 | US5091703 Analog line connection |
| 02/25/1992 | CA1296439C Cancelling circuit and transmission system |
| 02/25/1992 | CA1296389C Duplex communication wireless |
| 02/23/1992 | CA2049615A1 Radio relay system, cordless telephone system, base station device, and radio system |
| 02/20/1992 | WO1992003002A1 Novel spread spectrum codec apparatus and method |
| 02/19/1992 | EP0471615A2 Control apparatus for systematically operating audio and/or video sets |
| 02/19/1992 | EP0471477A1 Wireless receiver |
| 02/19/1992 | CN2096849U Explaining microphone for guider |
| 02/19/1992 | CN1058875A Fm trap for television tuner permitting both tv and fm reception through same tuner |
| 02/19/1992 | CN1058874A Mono fm radio in television receiver |
| 02/19/1992 | CN1058873A First if filter with fixed second half-if trap for use in fm radio in television ceceiver |
| 02/19/1992 | CN1058872A Using first if of 43.5 mhz. or less in fm. radio in television tuner |