| 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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| 09/27/1994 | US5351052 Transponder systems for automatic identification purposes |
| 09/27/1994 | US5351018 Antenna isolation assembly for hot chassis receiver |
| 09/27/1994 | CA2034712C Automobile radio telephone apparatus capable of detecting a drop of power source voltage |
| 09/27/1994 | CA2004675C Radio telephone in which an off operation of an operator-actuated power switch is inhibited during a talk mode |
| 09/26/1994 | CA2382460A1 Communication system |
| 09/23/1994 | CA2118773A1 Paging device having integral oem interface |
| 09/22/1994 | DE4409379A1 Elektronische Einrichtung mit Modeumschaltung Electronic device with mode switching |
| 09/22/1994 | DE4308175A1 Method for reproducing a single-channel or multiple-channel digital, block-by-block-coded audio signal |
| 09/22/1994 | DE4308161A1 System for communication via satellites |
| 09/21/1994 | EP0616434A1 Digital superheterodyne receiver and method for baseband filtering |
| 09/21/1994 | EP0616427A1 Remote controller |
| 09/21/1994 | EP0616424A1 Method of and device for detecting pulsatory interference signal in a sound signal |
| 09/21/1994 | EP0616420A1 Onboard l.f. amplifier, onboard receiver for telecontrol signals |
| 09/21/1994 | EP0546104B1 Stationary interference cancellor |
| 09/21/1994 | EP0448618B1 Improvements to rds radio system |
| 09/21/1994 | CN2178021Y Automatic calling apparatus for paging system of beeper |
| 09/21/1994 | CN1092584A Transmitting method, receiving method, and communication method for bidirectional bus system, and BI-directional bus system |
| 09/21/1994 | CN1092577A 时钟恢复电路 Clock recovery circuit |
| 09/21/1994 | CN1092570A Portable telephone set |
| 09/20/1994 | US5349699 Radio receiver with masking of switchover noise |
| 09/20/1994 | US5349694 Radio relay system with a multiplex separation circuit and control for providing time delay multiplex operation of receiver and transmitter |
| 09/20/1994 | US5349606 Apparatus for multipath DSSS communications |
| 09/20/1994 | US5349575 Portable audio device |
| 09/20/1994 | US5349497 Detachable handle structures for terminals |
| 09/20/1994 | US5349386 Wireless signal transmission systems, methods and apparatus |
| 09/20/1994 | US5349357 Circuit arrangement for obtaining a constant field strength of an HF signal radiated by a transmitting device with exchangeable antenna |
| 09/20/1994 | US5349332 EAS system with requency hopping |
| 09/20/1994 | US5349300 Method and apparatus for controlling a peak envelope power of a PA |
| 09/20/1994 | US5349285 Power supply circuit |
| 09/19/1994 | CA2115082A1 Low-loss rf coupler for testing a cellular telephone |
| 09/16/1994 | CA2118976A1 Intermediate frequency digital receiver and basefand process used in said receiver |
| 09/15/1994 | WO1994021065A1 Method and apparatus for coherent communication in a spread-spectrum communication system |
| 09/15/1994 | WO1994021058A1 Modular radio communications system |
| 09/15/1994 | WO1994021056A1 Random access communication method by use of cdma, and system for mobile stations which use the method |
| 09/15/1994 | WO1994021055A1 Method for data compression |
| 09/15/1994 | WO1994021054A1 Accessory for a mobile communication device |
| 09/15/1994 | WO1994021053A1 Antenna fixture for hand-held cellular telephones |
| 09/15/1994 | WO1994020940A1 Loop powered process control transmitter |
| 09/15/1994 | WO1994020888A3 Radio frequency telecommunications transceiver |
| 09/15/1994 | WO1994020888A2 Radio frequency telecommunications transceiver |
| 09/15/1994 | CA2157928A1 Accessory for a mobile communication device |
| 09/15/1994 | CA2154575A1 Method for data compression |
| 09/14/1994 | EP0615397A2 Noise suppression circuit for radio transceiver microphone |
| 09/14/1994 | EP0615352A1 Radio telephone system using a variable length training sequence |
| 09/14/1994 | EP0615351A2 Transmission level control system and method in radio communication station |
| 09/14/1994 | EP0615349A2 Methods and apparatus for recording, reproducing, transmitting and/or receiving compressed data and recording medium therefor |
| 09/14/1994 | EP0615348A1 Devices for recording and/or reproducing or transmitting and/or receiving compressed data and recording medium therefor |
| 09/14/1994 | EP0615343A1 Circuit arrangement for generating a tuning voltage |
| 09/14/1994 | EP0615340A1 Low-delay subband adaptive filter |
| 09/14/1994 | EP0533887A4 Method and apparatus for accommodating a variable number of communication channels in a spread spectrum communication system |
| 09/14/1994 | EP0527141B1 Speech-transmission system |
| 09/14/1994 | CN2177306Y FM receiving and electromagnetic induction dual wireless earphone |
| 09/14/1994 | CN1092225A 无线电接收机 Radio receiver |
| 09/14/1994 | CN1092223A Casing structure for an apparatus using a pneumatic battery |
| 09/13/1994 | US5347546 Method and apparatus for prefiltering a global positioning system receiver |
| 09/13/1994 | US5347538 Transceiver for bidirectional link, integrated circuit including the transceiver, and application to communication between units of a system |
| 09/13/1994 | US5347537 Spread spectrum communication device |
| 09/13/1994 | US5347536 Multipath noise reduction for spread spectrum signals |
| 09/13/1994 | US5347534 Automatic gain control system |
| 09/13/1994 | US5347208 Charging equipment for charging a portable apparatus and separable cell pack |
| 09/13/1994 | US5347165 Redundancy system switching control system |
| 09/13/1994 | CA2091628A1 Radio frequency radiation shield for hand-held radio phone |
| 09/12/1994 | CA2118767A1 Radio transceiver |
| 09/12/1994 | CA2091608A1 Radio frequency radiation shield for hand-held radio phone antenna |
| 09/08/1994 | DE4407319A1 Fernsteuersystem für eine Vielzahl von Geräten A remote control system for a plurality of devices |
| 09/08/1994 | DE4405391A1 Portable electrical cable drum |
| 09/08/1994 | DE4307164A1 Cordless, mobile telephone |
| 09/08/1994 | DE4306595A1 Autoradio mit einem Decoder für zusätzliche Signale und mit einem Speicher für übermittelte Informationen Car radio with a decoder for additional signals and a memory for any information submitted |
| 09/08/1994 | DE4306578A1 Method for receiving RF signals using a double heterodyne receiver |
| 09/07/1994 | EP0614303A1 Method for delivering a telephone number associated with a telephone subscription, telephones and mobile telephone using the method |
| 09/07/1994 | EP0614292A1 Digital signal receiving apparatus with bit error controlled muting |
| 09/07/1994 | EP0614289A2 Transmission apparatus for round-trip satellite |
| 09/07/1994 | EP0614268A1 Method and apparatus for producing a difference signal between signal frequencies, and for detection of modulation |
| 09/07/1994 | EP0614242A1 Electrical filter |
| 09/07/1994 | EP0614162A2 Voice storage communication system |
| 09/07/1994 | EP0613606A1 Methods and apparatus for communicating program data signals via a remote control unit |
| 09/07/1994 | EP0394257B1 Low power digital receiver |
| 09/07/1994 | EP0378609B1 Process for transmitting an audio signal |
| 09/07/1994 | CN2176617Y Portable and multifunctional radio |
| 09/07/1994 | CN1091879A Pilot carrier dot product circuit |
| 09/07/1994 | CN1091874A Personal radio paging receiver |
| 09/07/1994 | CN1091873A A miniature wireless communication device |
| 09/07/1994 | CN1091871A Method and apparatus for signal processing using reference signals |
| 09/07/1994 | CN1091851A Transmitting method, receiving method, and communication method for BI-directional bus system, and BI-directional bus system |
| 09/06/1994 | US5345607 RDS radio receiver with program type mode |
| 09/06/1994 | US5345606 RDS radio receiver with user-definable-region filtering |
| 09/06/1994 | US5345604 FM vehicle radio with modular phase shifters |
| 09/06/1994 | US5345602 Receiver with multiple antennas |
| 09/06/1994 | US5345591 Receiving satellite switching apparatus |
| 09/06/1994 | US5345476 Interference canceller with feedforward transversal filter having switched tap-gain coefficients |
| 09/06/1994 | US5345472 Method and apparatus for receiving and decoding communication signals in a CDMA receiver |
| 09/06/1994 | US5345471 Ultra-wideband receiver |
| 09/06/1994 | US5345470 Methods of minimizing the interference between many multiple FMCW radars |
| 09/06/1994 | US5345469 Communication device with code sequence selection system |
| 09/06/1994 | US5345231 Contactless inductive data-transmission system |
| 09/06/1994 | CA2037605C Automatic channel selection in a mobile radio for telephone interconnect |
| 09/04/1994 | CA2116375A1 Radio frequency filter |
| 09/01/1994 | WO1994019894A1 Voice transmission systems with voice cancellation |
| 09/01/1994 | WO1994019892A1 Multiple-modulation communication system |
| 09/01/1994 | WO1994019882A1 A method for repeaters to adaptively digitally code received analog information |