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)
02/1999
02/23/1999CA2154795C An apparatus and method for digitally processing signals in a radio frequency communication system
02/23/1999CA2127597C Variable rate communication method and a variable rate communication system
02/23/1999CA2118718C Communication device having a speaker and microphone
02/23/1999CA2081287C Receiver capable of reliably detecting a failure
02/20/1999CA2368848A1 Wireless communication apparatus and wireless communication method
02/20/1999CA2245341A1 Digital receiving apparatus
02/20/1999CA2237827A1 Wireless communication apparatus and wireless communication method
02/18/1999WO1999008456A1 Communication system utilizing host signal processing
02/18/1999WO1999008426A1 Non-coherent six-port receiver
02/18/1999WO1999008398A2 Method and apparatus for adaptive closed loop power control using open loop measurements
02/18/1999WO1999008397A2 Method and apparatus for predictive power control with loop delay
02/18/1999WO1999008396A2 Transponder for transmitting processed data to a base station over large distances and at a high data transfer rate
02/18/1999WO1999008395A1 Portable radio transceiver with diplexer-switch circuit for dual frequency band operation
02/18/1999WO1999008394A1 Portable telecommunications apparatus with means for screening the electromagnetic radiation emitted
02/18/1999WO1999008393A1 Calibration of n-port receiver
02/18/1999WO1999008389A2 A digital communication device and a mixer
02/18/1999WO1999008385A2 Method for maintaining a time grid defined by a high clock frequency by means of a low clock frequency
02/18/1999WO1999008384A2 Multichannel radio device, a radio communication system, and a fractional division frequency synthesizer
02/18/1999WO1999008382A1 Rds frequency replacement tests at low frequency minimum level
02/18/1999WO1999008380A1 Improved listening enhancement system and method
02/18/1999WO1999008344A2 Electrical device
02/18/1999WO1999008165A1 Automatic configuration mechanism for universal remote
02/18/1999WO1998052168A3 Reader for rfid system
02/18/1999WO1998040972A3 Code division multiple access communication system
02/18/1999WO1998040968A3 A frequency conversion circuit
02/18/1999WO1998020696A3 Method and apparatus for compressing and transmitting high speed data
02/18/1999EP0903016A3 Code division multiple access communication system
02/18/1999DE19735179A1 Motor vehicle radio with locking arrangement
02/18/1999DE19734988A1 Car radio with remote control function
02/18/1999DE19733336A1 Verfahren und Funkstation zur Datenübertragung Procedures and radio station for data transmission
02/17/1999EP0897236A2 Foldable portable radio communication apparatus
02/17/1999EP0883869A4 Programmable universal remote control
02/17/1999EP0674824B1 Television program delivery system
02/17/1999EP0673580B1 An operation center for a television program packaging and delivery system
02/17/1999CN2308211Y VHF band duplexer
02/17/1999CN1208525A Data transmission method and equipment for encoding a signal
02/17/1999CN1208524A Radio communication equipment using algorithm diversity
02/17/1999CN1208520A Receiving method, and receiver
02/17/1999CN1208517A Re-orthogonalization of wideband CDMA signals
02/17/1999CN1208516A Shared wave removing device
02/17/1999CN1208515A Code synchronization in multi-user spread-spectrum systems
02/17/1999CN1208514A Flip cover and antenna assembly for a portable phone
02/17/1999CN1208488A A method and a device for finalizing data carrying communication equipment in traffic control systems
02/17/1999CN1208315A Base station transmitter-receiver
02/17/1999CN1208288A Audio decoding device, signal processing device sound image localization device, audio image control method
02/17/1999CN1208261A Antenna circuit having matching circuit and method for implementing the same
02/17/1999CN1042185C Method and apparatus for noise burst detection in a signal processor
02/16/1999US5873065 Two-stage compression and expansion of coupling processed multi-channel sound signals for transmission and recording
02/16/1999US5873058 Voice coding-and-transmission system with silent period elimination
02/16/1999US5873046 System for communicating in analog or digital mode and mobile station employing the same
02/16/1999US5873045 Mobile client computer with radio frequency transceiver
02/16/1999US5873029 High dynamic range millimeter wave power detector with temperature compensation
02/16/1999US5873027 Mobile radio system with control over radio wave output if a malfunction is detected
02/16/1999US5873025 Modulated backscatter wireless communication system having an extended range
02/16/1999US5872810 Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem
02/16/1999US5872808 Apparatus and method for synchronization of direct sequence CDMA signals
02/16/1999US5872806 Spread spectrum signal transmission method and system and also transmitter and receiver for use with the method and system
02/16/1999US5872791 Method and apparatus for data encoding and communication over noisy media
02/16/1999US5872776 Information processing system
02/16/1999US5872775 Method and apparatus for performing rate determination
02/16/1999US5872774 Mobile station assisted timing synchronization in a CDMA communication system
02/16/1999US5872744 Battery arrangement for a wrist-carried radiotelephone
02/16/1999US5872603 Analog circuit controller using signals indicative of control voltage and type of control voltage
02/16/1999US5872562 Universal remote control transmitter with simplified device identification
02/16/1999US5872540 Digital interference suppression system for radio frequency interference cancellation
02/16/1999US5872538 Frequency domain correction of I/Q imbalance
02/16/1999US5872537 Monostatic homodyne radar system
02/16/1999US5872522 Communications system
02/16/1999US5872520 Identification and/or sensor system
02/16/1999US5872519 System for monitoring and controlling an area
02/16/1999US5872487 Fast frequency switching synthesizer
02/16/1999US5872481 Efficient parallel-stage power amplifier
02/16/1999US5872466 Matched filter circuit
02/16/1999US5872369 Solid-state antenna switch and field-effect transistor
02/16/1999CA2120095C Temperature-coefficient controlled radio frequency signal detecting circuitry
02/16/1999CA2109877C Clock recovery circuit
02/16/1999CA1340400C Vehicle data system
02/12/1999CA2450503A1 Frequency hopping spread-spectrum radio communications
02/11/1999WO1999007165A1 Extending battery life in electronic apparatus
02/11/1999WO1999007093A2 Wireless broadband transmitter for a signal consisting of a plurality of digitally modulated carriers
02/11/1999WO1999007091A1 Radio receiver
02/11/1999WO1999007089A1 Rapidly decorrelating spreading sequences for ds-cdma transceivers
02/11/1999WO1999007085A2 Method and radio station for transmitting data
02/11/1999WO1999007081A1 Rf transceiver and operating method
02/11/1999WO1999007080A1 Multi-switch device for controlling vehicle subsystems
02/11/1999WO1999007079A1 Auxiliary battery holder with multicharger functionality
02/11/1999WO1999007077A2 Means and method for a synchronous network communications system
02/11/1999WO1999007065A1 Systems and methods for automatic deviation setting and control in radio transmitters
02/11/1999WO1999006998A1 Model and command set for an av/c-based disc player/recorder subunit
02/11/1999WO1999006997A1 A model and command set for an av/c-based disc media player/recorder subunit
02/11/1999WO1999006922A1 Digital matched filter
02/11/1999WO1999006777A1 Cryogenic filters
02/11/1999WO1998045967A3 Reducing interference in a mobile communications system
02/11/1999WO1998043362A3 Method and apparatus for reducing spread-spectrum noise
02/11/1999WO1998042112A3 Communications terminal and method for data transmission between a communications network and a communications terminal
02/11/1999DE19734529A1 Replay volume control method for radio receiver
02/11/1999DE19734168A1 RDS-AF-Tests im NF-Pegelminimum RDS AF tests in NF-level minimum
02/11/1999CA2302466A1 Means and method for a synchronous network communications system
02/11/1999CA2296309A1 Systems and methods for automatic deviation setting and control in radio transmitters
02/11/1999CA2291174A1 Multi-switch device for controlling vehicle subsystems