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)
01/1996
01/24/1996EP0693829A1 Method and device for encoding information and method and device for decoding information
01/24/1996EP0693828A1 Data encoding method and apparatus, data decoding method and apparatus, data recording medium, and data transmission method
01/24/1996EP0693237A1 A live voice device for cellular phones particularly operable in combination with radio receiver apparatus in motor vehicles
01/24/1996CN2218425Y TV sound signal receiver
01/24/1996CN1115591A Apparatus for and method of speech digitizing
01/24/1996CN1115590A Receiver for spread spectrum communication
01/24/1996CN1115553A PLL synthesizer radio paying receiver capable of reducing an average power consumption
01/24/1996CN1115541A Apparatus for suppressing ghosts in signals modulating a carrier in quadrature phasing with a video carrier
01/24/1996CN1115528A Noise reducing method, noise reducing apparatus and telephone set
01/24/1996CN1115521A Power amplifier and power amplification method
01/24/1996CN1030808C Gain control circuit for radio transmitter
01/23/1996US5487181 Low power architecture for portable and mobile two-way radios
01/23/1996US5487179 Arrangement for duplex transmission having transmitter power control
01/23/1996US5487177 FM receiver comprising a circuit arrangement for determining the field strength of FM transmitters
01/23/1996US5487149 Common control redundancy switch method for switching a faulty active common control unit with an inactive spare common control unit
01/23/1996US5487099 Portable telephone having an additional device for making external connections
01/23/1996US5487067 Audio data communications
01/23/1996US5486877 Audio visual system with automatic closing of a bus circuit when an AV unit is disconnected
01/23/1996US5486864 Differential time code method and apparatus as for a compressed video signal
01/23/1996US5486797 Integrated port selection circuit for high frequency signal
01/23/1996US5486796 Oscillator circuit for receiving a wide frequency band signal
01/23/1996US5486789 Apparatus and method for providing a baseband digital error signal in an adaptive predistorter
01/22/1996CA2128587A1 Method and arrangement for recognition of a coded transmitted signal
01/18/1996WO1996001545A1 Mobile communication system using base station frequency correcting method
01/18/1996WO1996001544A2 A reception method, and a receiver
01/18/1996WO1996001533A1 Signal protection and monitoring system
01/18/1996WO1996001530A1 Apparatus for performing frequency conversion in a communication system
01/18/1996DE4439489C1 Acoustic surface wave device for mobile radio telecommunications
01/18/1996DE4435667A1 Data signal receiver for signals transmitted electromagnetically or by wire e.g. satellite, telephone or wide-band signals
01/18/1996DE4425261A1 EMF neutraliser with wooden base part equipped with varying quartz balls in circle
01/18/1996DE19530812A1 Radio measuring receiver or spectrum analyser with image frequency suppression
01/18/1996DE19525428A1 Spread spectrum communication system
01/18/1996CA2167702A1 Apparatus for performing frequency conversion in a communication system
01/17/1996EP0692903A1 Hands-free communication apparatus with echo canceler
01/17/1996EP0692889A1 Method, transmitter and receiver for transmission and selection of local broadcast programmes in a common wave network
01/17/1996EP0692885A1 Wireless telephone
01/17/1996EP0692882A2 Method and apparatus for frequency happing communication in a wireless transceiver network
01/17/1996EP0692880A1 Signal encoder, signal decoder, recording medium and signal encoding method
01/17/1996EP0692167A1 Apparatus and method for transmitting information between dual redundant components utilizing four signal paths
01/17/1996EP0692164A1 Reception method and cdma receiver
01/17/1996EP0692162A1 Method and apparatus for providing a communication link quality indication
01/17/1996CN1115195A Code division multiplex transmitter/receiver
01/17/1996CN1115194A Adaptive radio receiver controller method and apparatus
01/17/1996CN1115166A Active filter circuit and portable telephone apparatus
01/17/1996CN1115156A A method and apparatus for improving message receive ratio in a radio paging system
01/17/1996CN1115143A Communication system and electronic apparatus
01/17/1996CN1115142A An electronics apparatus having a connecting terminal for only one connecting terminal of the other electronics apparatus
01/17/1996CN1115139A Synthesizer receiver
01/17/1996CN1115138A Universal miniature ultrasonic transceiver module
01/16/1996US5485524 System for processing an audio signal so as to reduce the noise contained therein by monitoring the audio signal content within a plurality of frequency bands
01/16/1996US5485515 Background noise compensation in a telephone network
01/16/1996US5485459 Local communication system with plural data channels
01/16/1996US5485149 Remote controller and method for assigning to signals priority based on type and manufacture of equipment
01/16/1996US5485113 Jitter-compensated sampling phase control apparatus
01/16/1996CA2152860A1 Antenna for communication device
01/16/1996CA2062526C Subscriber line interface circuit for serving isdn subscribers using echo cancellers and pots subscribers
01/16/1996CA2033310C Communication signal compression system and method
01/15/1996CA2153617A1 Cdma receiving apparatus
01/11/1996WO1996001013A1 Spread-spectrum changeable base station
01/11/1996WO1996001011A1 A receiver incorporating an other users noise simulator (ouns) for use in a communication system
01/11/1996WO1996001006A1 Spurious response rejecting mixer using spread spectrum techniques
01/11/1996WO1996000991A1 Phased array spread spectrum system and method
01/11/1996WO1996000989A1 Summing network
01/11/1996WO1995034154A3 Method for synchronizing subscriber equipments, a base station and a subscriber equipment
01/11/1996WO1995033326A3 Method and arrangement for call setup in telecommunication networks using signaling aided redialing
01/11/1996DE4422235A1 Radio receiver e.g. for recording of traffic messages
01/11/1996DE19514798A1 Multilayer duplex packet for mobile communication handset
01/10/1996EP0691775A2 An apparatus and method of configuring a cordless telephone for operating the same in a frequency hopping system communication system
01/10/1996EP0691774A1 Radiotelephone
01/10/1996EP0691755A2 Method and apparatus for digital signal synthesis and processing for frequency hopping spread spectrum systems
01/10/1996EP0691754A2 Dynamic control of acquisition and tracking of the correlators in a RAKE receiver
01/10/1996EP0691753A1 Improved transformerless hybrid circuit
01/10/1996EP0691752A1 Transformerless hybrid circuit having direct powered line-side amplifiers
01/10/1996EP0691747A2 Circuit arrangement for a phase locked loop
01/10/1996EP0691740A2 Radio station memory presets with stored audio effects
01/10/1996EP0691736A1 Control of audio effects in radio receivers
01/10/1996EP0691696A1 Battery housing with integral latch and positive displacement apparatus
01/10/1996EP0691598A2 Method and means to drive a software clock in an electronic entertainment apparatus
01/10/1996EP0691052A1 Method and apparatus for encoding multibit coded digital sound through subtracting adaptive dither, inserting buried channel bits and filtering, and encoding and decoding apparatus for use with this method
01/10/1996EP0691051A1 Mobile communications equipment
01/10/1996EP0691050A1 Circuit for deriving audio signal masking signals
01/10/1996EP0691049A1 Circuit for deriving a quality signal dependent on the quality of a received multiplex signal
01/10/1996EP0691048A1 Digital filter
01/10/1996EP0691013A1 Arrangement for a use billing system
01/10/1996CN2217284Y Cell-charging base for moveable telephone
01/10/1996CN2217283Y Vibration apparatus for pager
01/10/1996CN2217282Y Sound signal radio transmission arrangement
01/10/1996CN1114848A Method and arrangement for controlling the operation of a high-frequency power amplifier
01/10/1996CN1114845A Battery pack retention apparatus
01/10/1996CN1114808A Data demodulation circuit and method for spread spectrum communication
01/10/1996CN1114804A A satellite communication receiving apparatus
01/10/1996CN1114743A Apparatus for detecting a light signal
01/09/1996US5483696 Method and apparatus for using a balanced mixer as a switch
01/09/1996US5483695 Intermediate frequency FM receiver using analog oversampling to increase signal bandwidth
01/09/1996US5483694 Radio receiver with an intermodulation detector
01/09/1996US5483692 Automatic variable radio volume control system
01/09/1996US5483691 Zero intermediate frequency receiver having an automatic gain control circuit
01/09/1996US5483689 Radio receiving with microprocessor control
01/09/1996US5483688 Adaptive automatic antenna tuning method and apparatus
01/09/1996US5483687 Operational transconductance amplifier track and hold system