| 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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| 01/08/1997 | CN1140000A Data transmission method, transmitter and receiver |
| 01/08/1997 | CN1139999A Transmission system utilizng different coding principles |
| 01/08/1997 | CN1139998A 接收电路 Receiving circuit |
| 01/08/1997 | CN1139854A Method and device for transmitting discontinuous signals in radio communication |
| 01/08/1997 | CN1139848A Infrared space communication system capable of reducing process quantities of data communication device during communication |
| 01/08/1997 | CN1139846A Closed-loop power coutrol for low earth orbit satellite communication system |
| 01/08/1997 | CN1139842A Process method and device, decoding method and device, transmitting method and recording medium for digital signal |
| 01/08/1997 | CN1139805A Data recording method |
| 01/08/1997 | CA2153423A1 Method and apparatus for implementing a direct-sequence code division multiple access communication system with an m-ary pulse-position modulated spreading-sequence signal |
| 01/07/1997 | US5592584 Method and apparatus for two-component signal compression |
| 01/07/1997 | US5592557 Radio receiver with digital signal processing |
| 01/07/1997 | US5592506 MSK spread-spectrum receiver which allows CDMA operations |
| 01/07/1997 | US5592482 Video distribution system using in-wall wiring |
| 01/07/1997 | US5592471 Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems |
| 01/07/1997 | US5592180 Direction finding and mobile location system for trunked mobile radio systems |
| 01/07/1997 | US5592173 GPS receiver having a low power standby mode |
| 01/07/1997 | CA2069781C Radio pager |
| 01/04/1997 | CA2180036A1 Combination earmuff radio headset (original radio earmuffs) |
| 01/03/1997 | WO1997000501A1 Non-contacting type radio frequency recognizing credit card system |
| 01/03/1997 | WO1996032784A3 Communications system and transmitting means therefor |
| 01/02/1997 | EP0751631A1 Radio frequency circuit for portable radio communication device |
| 01/02/1997 | EP0751630A2 Code division multiple access base station transmitter |
| 01/02/1997 | EP0751629A2 Carrying means for attachment device for mobile station |
| 01/02/1997 | EP0751628A2 Fitting piece in a mobile station for its attachment device |
| 01/02/1997 | EP0751627A2 Communication terminal equipment for receiving and sending message information and the control method thereof |
| 01/02/1997 | EP0751626A2 Radio transmitter |
| 01/02/1997 | EP0751614A1 Cuber based predistortion circuit and mobile station using the same |
| 01/02/1997 | EP0751520A2 Transmission of digital signals by means of a record carrier |
| 01/02/1997 | EP0751042A1 Removable front portion for a car radio |
| 01/02/1997 | EP0649588B1 Transmission and storage of multi-channel audio-signals when using a bit rate-reducing coding process |
| 01/02/1997 | EP0648391B1 Synchronous tracking am receiver |
| 01/02/1997 | EP0578744A4 Minimum wire interface for multiple accessories |
| 01/02/1997 | EP0485529B1 Broadcast receiver |
| 01/02/1997 | DE19626070A1 Radio frequency module esp. for RF control transmitter |
| 01/02/1997 | DE19617630A1 Verfahren zum Herleiten der Nachwirkperiode in einem Sprachdecodierer bei diskontinuierlicher Übertragung, sowie Sprachcodierer und Sender-Empfänger A method for deriving the Nachwirkperiode in a speech decoder in the discontinuous transmission, as well as speech encoder and transceiver |
| 01/02/1997 | DE19543717A1 High frequency signal processing and transmitting method esp. radio and television signals transmitted via satellite |
| 01/02/1997 | DE19522317A1 Direct broadcasting satellite tuner, e.g. for satellite TV |
| 01/01/1997 | CN2244269Y Wireless microphone |
| 01/01/1997 | CN1139365A Radio paging receiver capable of controllably varying activatin period of receiving section to improve battery saving efficiency |
| 01/01/1997 | CN1139343A Double superheterodyne tuner |
| 01/01/1997 | CN1139323A Code detection apparatus |
| 01/01/1997 | CN1139322A Signal-to-noise enhancer |
| 01/01/1997 | CN1139300A Apparatus capable of receiving circularly polarized signals |
| 12/31/1996 | US5590419 Variable power circuit and apparatus using the power circuit |
| 12/31/1996 | US5590418 Method and apparatus for stabilizing the gain of a control loop in a communication device |
| 12/31/1996 | US5590417 Radiotelephone apparatus including a wireless headset |
| 12/31/1996 | US5590414 Adapter unit for a portable radio telephone enabling either one of data transmission and hand-free operation |
| 12/31/1996 | US5590413 Radio transceiver having shared modulation and demodulation mixer circuits |
| 12/31/1996 | US5590412 Communication apparatus using common amplifier for transmission and reception |
| 12/31/1996 | US5590411 Method and apparatus for suppressing spurious third-order responses in transceivers |
| 12/31/1996 | US5590410 Communications system |
| 12/31/1996 | US5590409 Transmission power control method and a transmission power control apparatus |
| 12/31/1996 | US5590408 Reverse link, transmit power correction and limitation in a radiotelephone system |
| 12/31/1996 | US5590402 Multi-mode transmitter for transmitter for signals having varying deviation levels |
| 12/31/1996 | US5590401 Selective-calling receiver with battery switching upon CPU stop detection |
| 12/31/1996 | US5590346 Antenna cap for computer device utilizing a radio card |
| 12/31/1996 | US5590203 Pilot signal detection circuit |
| 12/31/1996 | US5590195 Information dissemination using various transmission modes |
| 12/31/1996 | US5590160 Symbol and frame synchronization in both a TDMA system and a CDMA |
| 12/31/1996 | US5590156 Multichannel wideband digital receiver making use of multiple wideband tuners having individually selectable gains to extend overall system dynamic range |
| 12/31/1996 | US5590108 Encoding method and apparatus for bit compressing digital audio signals and recording medium having encoded audio signals recorded thereon by the encoding method |
| 12/31/1996 | US5589838 Short range radio locator system |
| 12/31/1996 | US5589796 Method and apparatus for increasing amplifier efficiency |
| 12/30/1996 | CA2177423A1 Operation of a radiotelephone in a synchronous extended standby mode for conserving battery power |
| 12/27/1996 | WO1996042161A1 Radio with peak power and bandwidth efficient modulation |
| 12/27/1996 | WO1996042147A1 Method for synchronizing spreading code and device for synchronizing spreading code |
| 12/27/1996 | WO1996042146A1 Cdma demodulator |
| 12/27/1996 | WO1996042137A1 Best-of-m pulse position modulation detector |
| 12/27/1996 | WO1996033559A3 Concealment method and arrangement and reproducing apparatus provided with the concealment arrangement |
| 12/27/1996 | EP0750414A2 Modulator and demodulator (MODEM) |
| 12/27/1996 | EP0750408A1 Device and method for coherent-tracking of cdma receiver |
| 12/27/1996 | EP0750404A2 Synchronisation in a spread spectrum communication system using a reference channel |
| 12/27/1996 | EP0750403A2 Radio transmitter/receiver |
| 12/27/1996 | EP0750402A2 Circuit and method for filtering a signal containing a sinusoidal interference |
| 12/27/1996 | EP0750363A1 Radio selective calling receiver |
| 12/27/1996 | EP0750291A1 Speech processor |
| 12/27/1996 | EP0750201A1 Full duplex modulated backscatter system |
| 12/27/1996 | EP0750200A1 Dual mode modulated backscatter system |
| 12/27/1996 | EP0749656A1 Portable communication device |
| 12/27/1996 | EP0749650A1 Method and apparatus for am compatible digital broadcasting |
| 12/27/1996 | EP0749648A1 Spread spectrum alignment repositioning method |
| 12/27/1996 | EP0749647A1 Method and apparatus for determining a masked threshold |
| 12/27/1996 | EP0749609A1 Method and device for controlling the operation of a portable electronic object supplied with power via an antenna |
| 12/27/1996 | EP0579777B1 Transmit/receive module |
| 12/27/1996 | EP0471799B1 Time domain radio transmission system |
| 12/25/1996 | CN1138926A Device and method for multiplexing signal |
| 12/25/1996 | CN1138924A Method and appts. for a radio communication system |
| 12/25/1996 | CN1138923A Receiver for FM multiplex broadcasting with detatchable storing medium |
| 12/25/1996 | CN1138808A CDMA multiuser receiver and method |
| 12/25/1996 | CN1138784A Spread spectrum communication system and its transmitter and receiver |
| 12/25/1996 | CN1138779A Transmission method and receiving apparatus of emergency information which is frequency-multiplexed on FM broadcast radio wave |
| 12/25/1996 | CN1033681C Communications device |
| 12/25/1996 | CN1033680C intermittent operation receiver |
| 12/24/1996 | US5588024 Frequency subband encoding apparatus |
| 12/24/1996 | US5588022 Method and apparatus for AM compatible digital broadcasting |
| 12/24/1996 | US5588020 Spread spectrum CDMA communications system |
| 12/24/1996 | US5587996 Method of radio-line relief and radio equipment in SDH network |
| 12/24/1996 | US5587823 Radio communication devices |
| 12/24/1996 | US5587577 Modular scanner with hand-held data terminal |
| 12/24/1996 | US5586704 Shoulder holster and method of carrying a portable telephone near the body of a user |