| 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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| 05/03/1994 | US5309115 Burst control circuit for use in TDMA communications system |
| 05/03/1994 | US5309113 FSK data demodulator |
| 05/03/1994 | US5308716 Battery pack retention apparatus |
| 05/03/1994 | CA2063403C Gain/phase compensation for linear amplifier feedback loop |
| 05/03/1994 | CA2017483C Fm stereophonic receiver |
| 05/03/1994 | CA2005450C Mobile radio telephone device |
| 05/03/1994 | CA2004365C Reactance buffered loop antenna and method for making the same |
| 04/30/1994 | CA2109440A1 Noise cancellation apparatus |
| 04/28/1994 | WO1994009571A1 Automatic gain control for reducing effects of jamming |
| 04/28/1994 | WO1994009570A1 Remote control housing with removable-memory card |
| 04/28/1994 | WO1994009569A1 Method and apparatus for automatic transfer of control from an internal processor to an external computer |
| 04/28/1994 | WO1994009568A1 Adaptive co-channel interference reduction system for cellular telephone central base stations |
| 04/28/1994 | WO1994009460A1 Computer card data receiver |
| 04/28/1994 | DE4310852C1 Burst reception for direct sequence spread spectrum signals - using channel response coefficients matched to continuously varying correlation characteristic to eliminate need for synchronisation circuits. |
| 04/28/1994 | DE4235909A1 Mono to stereo changeover switch - has differential amplifier with transistor whose base is supplied with voltage lying between lower and upper levels of pulse signal |
| 04/28/1994 | DE4235852A1 Controlling reception quality, e.g. of TV receiver - changes individual operating parameters after production of enable signal to improve signal=to=noise ratio |
| 04/27/1994 | EP0594434A2 Radio transceiver |
| 04/27/1994 | EP0594426A1 Radio paging terminal for data transfer |
| 04/27/1994 | EP0594358A2 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems |
| 04/27/1994 | EP0594352A2 Circuitry for minimizing peak power in an amplifier carrying a plurality of signals of differing frequencies |
| 04/27/1994 | EP0594325A2 Adaptive data rate packet communications system |
| 04/27/1994 | EP0594304A2 Opcode specific compression for window system |
| 04/27/1994 | EP0593850A2 Method and apparatus for subband filtering of a stereo audio signal |
| 04/27/1994 | EP0346495B1 Television tuner |
| 04/27/1994 | CN2163485Y Multifunction combination power source of mobile telephone |
| 04/27/1994 | CN2163483Y Souvenir badge radio |
| 04/27/1994 | CN2163482Y Earphone radio |
| 04/27/1994 | CN2163481Y Multifunction general tele-controller |
| 04/27/1994 | CN1086058A Method and apparatus in a communication device for automatic transfer of control from an internal processor to an external computer |
| 04/26/1994 | US5307517 Adaptive notch filter for FM interference cancellation |
| 04/26/1994 | US5307515 Adjacent channel controller for radio receiver |
| 04/26/1994 | US5307514 Frequency independent strong signal suppressor |
| 04/26/1994 | US5307513 Channel frequency storing method for a vehicle radio |
| 04/26/1994 | US5307512 Power control circuitry for achieving wide dynamic range in a transmitter |
| 04/26/1994 | US5307511 Anti-fall structure for battery cover of radio communication apparatus or similar apparatus |
| 04/26/1994 | US5307508 Shock isolation for selective call receivers |
| 04/26/1994 | US5307382 Lock apparatus for dual phase locked loop |
| 04/26/1994 | US5307379 Automatic noise characterization for optimally enabling a receiver |
| 04/26/1994 | US5307378 Digital radio communication apparatus |
| 04/26/1994 | US5307372 Radio transceiver for transmitting and receiving data packets |
| 04/26/1994 | US5307326 Cassette adapter for signal playback apparatus |
| 04/26/1994 | US5307193 Control signal repeater system |
| 04/26/1994 | US5306961 Low-power integrated circuit with selectable battery modes |
| 04/26/1994 | CA2016333C Cellular telephone operable on different cellular telephone systems |
| 04/24/1994 | CA2103744A1 Adaptive data rate packet communications system |
| 04/22/1994 | CA2108831A1 Data transfer system |
| 04/20/1994 | EP0593289A2 Frequency hopping spread spectrum data communications system |
| 04/20/1994 | EP0593273A2 An electronic appliances control apparatus |
| 04/20/1994 | EP0593272A2 An electronic appliance control apparatus |
| 04/20/1994 | EP0593255A1 An arrangement for demodulating speech signals discontinuously transmitted from a mobile unit |
| 04/20/1994 | EP0593027A1 Paging receiver and radio frequency channel searching method for the same |
| 04/20/1994 | EP0593024A2 Electronic device |
| 04/20/1994 | EP0592787A1 Procedure for improvement of acoustic feedback suppression of electro-acoustic devices |
| 04/20/1994 | EP0592781A1 Article surveillance system with frequency hopping |
| 04/20/1994 | CN2162744Y Multifunction radio |
| 04/20/1994 | CN2162743Y Wrist pager |
| 04/20/1994 | CN2162742Y Watch remote controlled launching apparatus |
| 04/20/1994 | CN1024310C Equipment & transmitting method for video information of coding explorer for fishes |
| 04/19/1994 | US5305467 Local area network for flexible digital communications within and between RF base stations |
| 04/19/1994 | US5305384 Digital encryption device |
| 04/19/1994 | US5305378 Arrangement for adjusting an adaptive digital filter included in a subscriber unit |
| 04/19/1994 | US5305349 Quantized coherent rake receiver |
| 04/19/1994 | US5305348 Spread-spectrum communication apparatus |
| 04/19/1994 | US5305332 Speech decoder for high quality reproduced speech through interpolation |
| 04/19/1994 | US5305245 Digital correlating device |
| 04/19/1994 | US5305181 Arm or wrist mounted terminal with a flexible housing |
| 04/19/1994 | US5305105 Audio/video signal input terminal circuit with automatic switching function |
| 04/19/1994 | US5305086 Two step demodulation synchronous detector |
| 04/19/1994 | US5304947 Arrangement for eliminating offset errors in a power control circuit of a pulsed transmitter final amplifier |
| 04/19/1994 | CA2029926C Process for searching for synchronization on reception of a spread spectrum modulated signal |
| 04/19/1994 | CA2020455C Feed forward spread spectrum signal processor |
| 04/16/1994 | CA2108389A1 Frequency hopping spread sprectrum data communications system |
| 04/14/1994 | WO1994008414A1 Cell based wide area network alternative access telephone and data system |
| 04/14/1994 | WO1994008402A1 Method and apparatus of estimating channel quality in a receiver |
| 04/14/1994 | WO1994008400A1 Communications device for use in mobile motor vehicles, in particular police motorbikes |
| 04/14/1994 | DE4233721A1 Kommunikationseinrichtung für den Einsatz in Polizei-Motorrädern Communication device for use in police motorcycles |
| 04/14/1994 | CA2144953A1 Cell based wide area network alternative access telephone and data system |
| 04/13/1994 | EP0592294A1 Transmission channel estimation unit |
| 04/13/1994 | EP0592163A1 A radio telephone for a vehicle |
| 04/13/1994 | EP0591842A1 Method and apparatus for concealing bit errors and interpolations in digital sound signals |
| 04/13/1994 | EP0591813A1 Continuous phase modulator |
| 04/13/1994 | EP0591465A1 Mobile telephone system with several transceivers. |
| 04/13/1994 | CN2162044Y Controller of shunting locomotive at junction station |
| 04/13/1994 | CN1085375A Switched signal processing circuit |
| 04/13/1994 | CN1085365A A communications system |
| 04/13/1994 | CN1024243C TV Signal receiving installation |
| 04/12/1994 | US5303422 Mobile audio system |
| 04/12/1994 | US5303421 Method and apparatus for coupling straps of a wrist worn device |
| 04/12/1994 | US5303420 Circuit for stabilizing the bias of a paging receiver with power saving functions |
| 04/12/1994 | US5303417 Mixer for direct conversion receiver |
| 04/12/1994 | US5303416 Method and apparatus for adjusting peak and valley acquisition rates of a signal received by a radio communication device |
| 04/12/1994 | US5303415 Pulse noise detecting circuit of AM receiver |
| 04/12/1994 | US5303414 Method and device for minimizing interference, in particular in connection with FM reception |
| 04/12/1994 | US5303413 AM radio receiver with switchable IF bandwidth |
| 04/12/1994 | US5303411 Receiver sensitivity threshold extended with the combination of an unmodulated signal with the received signal |
| 04/12/1994 | US5303408 Squelch detector |
| 04/12/1994 | US5303406 Noise squelch circuit with adaptive noise shaping |
| 04/12/1994 | US5303404 Adjustable bandwidth in a radiotelephone |
| 04/12/1994 | US5303403 Electronic switch for selecting satellite polarization signals |
| 04/12/1994 | US5303401 RDS receiver with automatic region recognition |