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)
12/1996
12/24/1996CA2153685C Method and apparatus for creating a composite waveform
12/24/1996CA2067728C Microminature down converter for satellite communications
12/19/1996WO1996041471A1 Electronic program guide schedule localization system and method
12/19/1996WO1996041470A1 Intelligent memory management system and method
12/19/1996WO1996041439A1 Standby power saving in mobile phones
12/19/1996WO1996041437A1 Wireless alarm system
12/19/1996WO1996041432A1 Fast locking mechanism for channelized ultrawide-band communications
12/19/1996WO1996041427A1 Digital downconverter/despreader for direct sequence spread spectrum cdma communications system
12/19/1996WO1996041426A1 Modular unit headset
12/19/1996WO1996041425A2 Direct sequence frequency ambiguity resolving receiver
12/19/1996WO1996041277A1 Neutral network processor for communication systems and method for its use
12/19/1996WO1996029791A3 Method and apparatus for offset frequency estimation for a coherent receiver
12/19/1996DE19623643A1 Detachable auxiliary battery pack for mobile telephone
12/19/1996DE19529187A1 Precise control of attenuator in aerial pre amplifier
12/19/1996CA2219498A1 Digital downconverter/despreader for direct sequence spread spectrum cdma communications system
12/18/1996EP0749223A1 Device and method for initially synchronizing spread-spectrum code of cdma transmission system
12/18/1996EP0749220A2 Coding of data with a fixed word length
12/18/1996EP0749219A2 Infrared spatial communication system capable of reducing a processing amount of data communication devices during communication
12/18/1996EP0749214A2 Radio communication equipment
12/18/1996EP0749213A2 Spread spectrum signal receiving apparatus
12/18/1996EP0749212A2 Radio pager having a protection lid
12/18/1996EP0749055A2 Heterodyne receiver with synchronous demodulation for time signal reception
12/18/1996EP0748586A2 System for identifying livestock and other individuals
12/18/1996EP0748551A1 Combating signal interference in digital transmission
12/18/1996EP0748540A1 Frequency hopping medium access control protocol
12/18/1996EP0748493A1 Remote meter reading power reduction method
12/18/1996EP0748491A1 Electronic identification system
12/18/1996EP0691050B1 Circuit for deriving audio signal masking signals
12/18/1996EP0627136B1 Method and apparatus for ghost cancelling and/or equalizing
12/18/1996CN2243142Y Three-wires walkie-talkie with code
12/18/1996CN1138394A Digital communications equipment using differential quaternary frequency shift keying
12/18/1996CN1138282A Hand radiotelephone
12/18/1996CN1138281A Portable electronic device and method for coupling power thereto
12/18/1996CN1138280A Radiotelephone having self contained hinge
12/18/1996CN1138254A Power control method and apparatus suitable for use in radio communication device
12/18/1996CN1138252A Radio communication system
12/17/1996USRE35402 CDMA/TDMA spread-spectrum communications system and method
12/17/1996US5586192 Method of and device for detecting pulsatory interference signals in a sound signal
12/17/1996US5586180 Method of automatic speech direction reversal and circuit configuration for implementing the method
12/17/1996US5586176 Mask apparatus for divers
12/17/1996US5586168 Apparatus incorporating a cellular telephone
12/17/1996US5586145 Transmission of electronic information by pulse position modulation utilizing low average power
12/17/1996US5586141 Interface protocol method for use in a frequency hopping radio system having first hopping code for synchronization and second hopping code for communication
12/17/1996US5586120 Method for a channel hopping communication system with variable transmission bandwidth
12/17/1996US5585809 Antenna unit for a car navigation device
12/17/1996US5585762 Arrangement for controlling the operation of a high-frequency power amplifier
12/17/1996US5585623 Method and apparatus for detecting a light signal in the presence of noise
12/17/1996US5585024 Protecting device for protecting an electronic equipment in order to use the electronic equipment under a hostile environment
12/17/1996US5584713 Electrical connector
12/17/1996US5584145 Garage door opener with remote safety sensors
12/17/1996CA2069476C An apparatus and method for varying a signal in a transmitter of a transceiver
12/17/1996CA2036423C Method of reducing the influence of fading of a viterbi receiver having at least two antennas
12/14/1996CA2166575A1 System for identifying livestock and other individuals
12/13/1996EP0760188A4 Universal connection for cellular telephone interface
12/12/1996WO1996039780A1 Radio frequency transmitter having switched mode power supply
12/12/1996WO1996039779A2 Control message transmission in telecommunications systems
12/12/1996WO1996039768A1 Digital super-regenerative detector rf receiver
12/12/1996WO1996039764A1 Improved direct sequence spread spectrum system
12/12/1996WO1996039753A1 Electronic metering equipment system
12/12/1996WO1996039752A1 Audio equipment with connectors for telecommunications modules
12/12/1996WO1996039751A1 Electronic equipment audio system
12/12/1996WO1996039750A1 Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion
12/12/1996WO1996039749A1 Timing adjustment control for efficient time division duplex communication
12/12/1996WO1996039748A1 Closed loop power control for low earth orbit satellite communications system
12/12/1996WO1996039745A1 Tuner for digital satellite receiver
12/12/1996WO1996039742A1 Cooling device for a high-frequency receiver
12/12/1996WO1996039099A1 Identification and locating transponder for implants
12/12/1996WO1996028880A3 Transponder for electronic identification system
12/12/1996DE19520947A1 Tragbarer Computer mit Telekommunikationseinrichtung Portable computer with telecommunications equipment
12/12/1996CA2223572A1 Identification and locating transponder for implants
12/12/1996CA2223321A1 Timing adjustment control for efficient time division duplex communication
12/12/1996CA2201753A1 Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion
12/12/1996CA2194383A1 Radio frequency transmitter having switched mode power supply
12/12/1996CA2194382A1 Digital super-regenerative detector rf receiver
12/11/1996EP0748074A2 Spread spectrum transmitter and receiver employing composite spreading codes
12/11/1996EP0748071A2 Short wave transmission method and apparatus therefor
12/11/1996EP0748066A2 Closed loop power control for low earth orbit satellite communications system
12/11/1996EP0748060A2 Post detection integration spread spectrum receiver
12/11/1996EP0748059A2 RF input circuit
12/11/1996EP0747714A2 Noise measurement test system
12/11/1996EP0746940A1 Combined tv/fm receiver
12/11/1996EP0746933A1 Communication device with code sequence selection system
12/11/1996EP0746924A1 Digital transmission system with an improved decoder in the receiver
12/11/1996EP0746916A1 Frequency selection method and apparatus
12/11/1996EP0746913A1 Process for the cascade coding and decoding of audio data
12/11/1996EP0746911A1 Transceiver for transmitting and receiving stair-stepped sinusoidal waveforms
12/11/1996EP0746904A1 Television receiver with saw filter coupling
12/11/1996CN1137843A A radio transmission system and radio apparatus for use in such system
12/11/1996CN1137728A Road/vehicle communication method and device
12/11/1996CN1137710A Transmitter-receiver
12/11/1996CN1137709A Automobile mounted radio receiver capable of automatically tuning to local affiliated station
12/11/1996CN1033549C Gps导航仪 Gps navigation
12/10/1996US5584068 Direct conversion receiver
12/10/1996US5584066 Correcting circuit for mixing circuit receiver using same and frequency spectrum inverting circuit using same
12/10/1996US5584065 Interference cancellation system employing an I/Q quadrature rotator
12/10/1996US5584064 Converter circuit for satellite broadcasting receivers having mixer isolation
12/10/1996US5584062 Method and apparatus for compensating phase locked receivers
12/10/1996US5584061 Receiver with automatic tuning function
12/10/1996US5584060 Circuit arrangement for derivation of a signal dependent on the change direction of the incoming signal level
12/10/1996US5584059 DC offset reduction in a zero-if transmitter