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