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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12/21/1994 | CN2185955Y Superhigh frequency super-small size screw filter |
12/21/1994 | CN1096621A Noise cancellation apparatus |
12/21/1994 | CN1096619A Intensity-stereo encoding and decoding in a transmission system |
12/21/1994 | CN1096618A Digital transmission system for transmitting an additional signal such as a surround signal |
12/21/1994 | CN1096615A Antenna sembly for radio corcuit and method therefor |
12/20/1994 | US5375260 Receiver unit for wireless microphone applications |
12/20/1994 | US5375258 Circuit for generating signals in phase quadrature and associated method therefor |
12/20/1994 | US5375257 Microwave switch |
12/20/1994 | US5375256 Broadband radio transceiver |
12/20/1994 | US5375255 Radio receiver comprising analog dynamic compression and digital expansion |
12/20/1994 | US5375254 Method of operating a communications system, a communications system and a secondary station for use in the system |
12/20/1994 | US5375189 Apparatus and method for audio data compression and expansion with reduced block floating overhead |
12/20/1994 | US5375171 Transmission system, and transmitter and receiver used in the transmission system for transmitting and receiving digital signals containing modulated bit allocation information |
12/20/1994 | US5375146 Digital frequency conversion and tuning scheme for microwave radio receivers and transmitters |
12/20/1994 | US5375141 Synchronizing circuit in a spread spectrum communications system |
12/20/1994 | US5375018 Location acquisition and time adjusting system |
12/20/1994 | US5374994 Input/output switching circuit for connecting audio/video units |
12/20/1994 | US5374930 High speed read/write AVI system |
12/18/1994 | CA2125817A1 Antenna switch circuit employing fets for reduced power consumption |
12/15/1994 | DE4338357C1 Electronic system for the early recognition, in the car, of road traffic signals |
12/15/1994 | DE4320561C1 IF amplifier for a satellite receiver |
12/14/1994 | EP0629055A2 Predistortion technique for communications systems |
12/14/1994 | EP0629054A2 Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system |
12/14/1994 | EP0629053A1 Circuit for detecting and rejecting adjacent channel interference |
12/14/1994 | EP0628195A1 Method and apparatus for encoding, decoding and compression of audio-type data |
12/14/1994 | EP0628193A1 A holder for remote control devices |
12/14/1994 | EP0595944B1 Process for finding the overall monitoring threshold during a bit-rate-reducing source coding |
12/14/1994 | EP0413805B1 Battery housing |
12/14/1994 | EP0409880B1 Actuator and communication system |
12/14/1994 | EP0394490B1 Audio signal demodulation circuit |
12/14/1994 | EP0358649B1 Arrangement for filtering an incoming fm signal |
12/14/1994 | CN2185489Y Bp信息接收卡 Bp receive card |
12/13/1994 | US5373506 Method and apparatus for paging in a communication system |
12/08/1994 | WO1994028675A1 Universal remote controller with synthesized voice interface |
12/08/1994 | WO1994028674A1 Method for connecting av equipment to av system |
12/08/1994 | WO1994028663A1 A frequency agile radio |
12/08/1994 | WO1994028652A1 Process for obtaining a signal indicating a synchronisation error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver |
12/08/1994 | WO1994028646A1 Equivalent circuit process for a transmission device for the bidirectional transmission of digital signals and arrangement for implementing the process |
12/08/1994 | WO1994028642A1 Cdma communication system |
12/08/1994 | WO1994028640A1 Rake receiver combining all the useful multipath components of a spread spectrum signal |
12/08/1994 | WO1994028639A1 Short range transmission of a plurality of signals simultaneously using high frequency carriers |
12/08/1994 | WO1994028637A1 A method and apparatus for determining signal usability |
12/08/1994 | WO1994028636A1 Car-radio combination set with an integrated transceiver device |
12/08/1994 | WO1994028633A1 Apparatus and method for coding or decoding signals, and recording medium |
12/08/1994 | WO1994028623A1 A method and apparatus for mitigating distortion effects in the determination of signal usability |
12/08/1994 | WO1994027787A1 Grinding tape and method of manufacturing the same |
12/08/1994 | WO1994027525A1 Active ear defender |
12/08/1994 | DE4317242A1 Direction-finding and location system for burst transmissions, and an associated method |
12/08/1994 | CA2163777A1 Process for obtaining a signal indicating a synchronization error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver |
12/07/1994 | EP0627836A2 Enhanced power saving method for handhold communication system and the handhold communication system thereof |
12/07/1994 | EP0627824A1 Programming/reprogramming a radio apparatus |
12/07/1994 | EP0627823A2 Communication protocol for communicating control data |
12/07/1994 | EP0627822A1 Clock radio with remote radio clock receiver |
12/07/1994 | EP0627142A1 Method and apparatus of controlling processing devices during power transition |
12/07/1994 | EP0627136A1 Method and apparatus for ghost cancelling and/or equalizing. |
12/07/1994 | EP0627106A1 Method and device for electronic identification. |
12/07/1994 | EP0595856A4 Adaptive graphic equalizer and radio using same. |
12/07/1994 | CN1096151A Reprogrammable terminal for suggesting programs offered on a television program delivery system |
12/07/1994 | CN1096150A Transmitter and receiver circuit and method thereor |
12/07/1994 | CN1096149A Multi-broadcasting receiver |
12/07/1994 | CN1026946C Battery chamber module with integrative limited moving rail |
12/06/1994 | US5371902 Method and apparatus for recovering baseband signals from in-phase and quadrature-phase signal components having phase error therebetween |
12/06/1994 | US5371858 Data communication system for assigning addresses to hand-held data terminals |
12/06/1994 | US5371800 Speech detection circuit |
12/06/1994 | US5371763 Packet mode digital data receiver |
12/06/1994 | US5371762 Technique utilizing signal storing devices for cancelling signal dispersion |
12/06/1994 | US5371761 Transmission system and receiver for this system |
12/06/1994 | US5371622 Coherent optical telecommunication network wherein each send/receive terminal can simultaneously communicate with more than one other send/receive terminal |
12/06/1994 | US5371553 Monitor apparatus for selecting audio-visual units and operating modes from a control window |
12/06/1994 | US5371493 Radio paging receiver wherein programming information is readout from a discardable data card inserted therein |
12/06/1994 | US5371481 Tuning techniques for I/Q channel signals in microwave digital transmission systems |
12/06/1994 | US5371478 Power amplifying unit using a power amplifying module |
12/06/1994 | US5370241 Holder for electronic remote controls |
12/06/1994 | US5370238 Remote control organizer |
12/06/1994 | CA1333413C Frequency independent strong signal suppressor |
12/04/1994 | WO1994029985A1 A communication method for an adaptive direct sequence cdma communication system |
12/03/1994 | CA2122116A1 Alerting and monitoring services for communications systems |
12/01/1994 | DE4419082A1 Adjusting device for a radio control transmitter |
11/30/1994 | EP0626766A2 Hybrid circuit and data communication apparatus |
11/30/1994 | EP0626765A1 Radio communication apparatus |
11/30/1994 | EP0626764A1 Portable satellite communication equipment |
11/30/1994 | EP0626754A1 Method and arrangement for amplitude modulating of a radio frequency signal |
11/30/1994 | EP0626635A2 Improved graphical user interface with method and apparatus for interfacing to remote devices |
11/30/1994 | EP0626114A1 Radio device |
11/30/1994 | EP0483234B1 A method of subcarrier multiplication which preserves am information in fm systems |
11/30/1994 | EP0433369B1 Adaptive scanning method |
11/30/1994 | CN2184295Y Highly stable wireless telephone |
11/30/1994 | CN2184293Y Siren for controllable movable telephone handset |
11/30/1994 | CN1026843C Remote control power supply apparatus |
11/29/1994 | US5369803 Car-mounted booster for plug-in connection with mobile telephone set |
11/29/1994 | US5369802 Method and apparatus for improved battery replacement |
11/29/1994 | US5369799 Adapted to receive a signal containing sync codes |
11/29/1994 | US5369798 Method and circuit for saving the power of a battery used in a portable radio telephone |
11/29/1994 | US5369797 Radio alarm clock with removable cassette player/recorder |
11/29/1994 | US5369796 Floating sound system |
11/29/1994 | US5369793 RF receiver adapted to process received RF pulses and reject RF continuous wave signals |
11/29/1994 | US5369792 AGC circuit of FM front-end portion for controlling bandwidth detection sensitivity |
11/29/1994 | US5369791 Apparatus and method for discriminating and suppressing noise within an incoming signal |
11/29/1994 | US5369790 Radio receiver |
11/29/1994 | US5369789 Burst signal transmitter |