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)
02/2000
02/08/2000CA2157111C Loop powered process control transmitter
02/08/2000CA2153379C Apparatus and method for minimizing the turn on time for a receiver operating in a discontinuous receive mode
02/08/2000CA2139516C Dual mode receiver having battery saving capability
02/03/2000WO2000005902A2 Initial acquisition and frame synchronization in spread spectrum communication system
02/03/2000WO2000005822A1 Acquisition method and device for carrying out said method
02/03/2000WO2000005821A1 Acquisition method and device for carrying out said method
02/03/2000WO2000005815A1 Single chip cmos transmitter/receiver and vco-mixer structure
02/03/2000WO2000005784A1 Receiving device for electronic waves
02/03/2000WO2000005779A2 Quasi-orthogonal code mask generating device in mobile communication system
02/03/2000WO2000005741A1 Multiple-channel digital receiver for global positioning system
02/03/2000WO2000005728A1 An electromagnetic shield
02/03/2000WO2000005692A1 Rfid system for detecting low power resonant tags
02/03/2000WO2000005676A1 Improved contactless badge reader
02/03/2000WO2000005673A1 System for the transmission of data from a data carrier to a station by means of at least one other auxiliary carrier signal
02/03/2000WO1999065200A3 Procedure and device for transmitting information by radio
02/03/2000WO1999062196A3 Write/read device for communication with transponders, having first coding means and second coding means
02/03/2000WO1999060734A3 Apparatus for receiving signals
02/03/2000WO1999057818A9 Double-balanced monolithic microwave integrated circuit mixer
02/03/2000DE19935855A1 Gerät und Verfahren zum Verarbeiten von Information, Informationsverarbeitungssystem, Terminal und Verfahren zum Empfangen von Daten und Datenrundfunksystem Apparatus and method for processing information, information processing system, terminal and method for receiving data, and data broadcasting system
02/03/2000DE19935232A1 Battery operated radio transmission terminal, e.g. cellular video telephone in which transmission speed is changed based on remaining battery energy
02/03/2000DE19933215A1 Radio receiver with programmable selection facility for receiving radio data service signal via designated channel
02/03/2000DE19834147A1 Muting device for silencing audio or video system when telephone rings includes LED for transmitting mute signal when ringing detected
02/03/2000DE19831928A1 Einrichtung zum Empfang mehrerer Rundfunksignale Means for receiving a plurality of broadcast signals
02/03/2000CA2624853A1 Rfid system for detecting low power resonant tags
02/03/2000CA2347394A1 An electromagnetic shield
02/02/2000EP0977459A2 Demand assigned mutiple access techniques
02/02/2000EP0977393A1 Cdma communication method
02/02/2000EP0977387A2 Radio broadcasting receiver comprising an automatic audio gain control system for equalising sound output levels for broadcast transmissions having different modulation levels
02/02/2000EP0977385A1 Fm multiplex broadcasting receiver and storage of received data in fm multiplex broadcasting receiver
02/02/2000EP0977379A2 A receiving apparatus for a random access channel of a CDMA mobile communication system
02/02/2000EP0977375A2 Dual mode satellite/cellular terminal
02/02/2000EP0977374A2 Dual mode satellite/cellular terminal
02/02/2000EP0977373A2 Dual mode satellite/cellular terminal
02/02/2000EP0977372A2 Dual mode satellite/cellular terminal
02/02/2000EP0977369A2 Sampling means for use with rake receiver
02/02/2000EP0977368A2 Radio transceiver and circuit
02/02/2000EP0977367A2 Portable telephone and method for automatically switching an antenna mode thereof
02/02/2000EP0977366A1 Two-way communication device for bicycle riders
02/02/2000EP0977354A1 Amplifier for radio transmission
02/02/2000EP0977351A1 Method and apparatus for radio communication
02/02/2000EP0977304A1 Communication apparatus, mobile radio equipment, base station and procedure to control the output power
02/02/2000EP0976248A1 System for automatically forming a program guide from information derived from multiple sources
02/02/2000EP0976247A1 System for forming and processing an mpeg compatible datastream incorporating internet information
02/02/2000EP0976246A1 A system for processing and decoding mpeg compatible data and internet information
02/02/2000EP0976245A1 System for forming program guide information for user initiation of control and communication functions
02/02/2000EP0976244A1 System for collating data from multiple sources to form a composite program guide for display
02/02/2000EP0976242A1 Display with one or more display windows and placement dependent cursor and function control
02/02/2000EP0976206A1 Forward link power control in a cellular system using n t/i 0 values
02/02/2000EP0976204A2 Transmitting/receiving station having impedance-matched receiving means for transponder answer signals
02/02/2000EP0976203A1 Data communications terminal and method of adjusting a power signal generated therefrom
02/02/2000EP0976202A2 System and method of downconversion where the received signal is downconverted
02/02/2000EP0976201A1 Integrated circuit for frequency conditioning in a radio transceiver working in the uhf range, especially a wireless telephone
02/02/2000EP0976196A2 A device for generating an ac amplitude-dependent indicator
02/02/2000EP0976058A1 Method and apparatus for device control
02/02/2000EP0976023A1 A hierarchical menu graphical user interface
02/02/2000EP0845172A4 Oscillator-transmitter with shared output circuit
02/02/2000CN1243621A Transmission system with improved recombination function of lost part
02/02/2000CN1243619A Compensation of delay in linearization loop of power amplifier
02/02/2000CN1243618A Radio front-end circuit
02/02/2000CN1243614A High frequency amplifier and communication receiver or wireless transceiver
02/02/2000CN1243410A Radio telephone set group with radio speakerphone function
02/02/2000CN1243404A Radio network
02/02/2000CN1243371A Direct-convertion receiver
02/02/2000CN1243365A 码分多址接收装置和码分多址通信方法 CDMA receiver and code division multiple access communication method
02/02/2000CN1243361A Method for improving signal needed in radio receiving unit
02/02/2000CN1049082C Power detector with matching impedance for radio-frequency signal amplifier
02/01/2000US6021336 Portable communication terminal capable of transmitting text data
02/01/2000US6021332 Multi-mode radiotelephone having a multiple battery arrangement
02/01/2000US6021331 Control system for a telecommunications system
02/01/2000US6021323 Direct conversion receiver with reduced even order distortion
02/01/2000US6021322 AM radio receiver
02/01/2000US6021319 Remote control system
02/01/2000US6021318 Transceiver switchover arrangement
02/01/2000US6021317 Dual antenna radiotelephone systems including an antenna-management matrix switch and associated methods of operation
02/01/2000US6021308 On-vehicle data communication system and method
02/01/2000US6021164 Digital radio communication system having reduced phase-locked loop, and its synchronization
02/01/2000US6021157 Fast phase estimation in digital communication systems
02/01/2000US6021156 Apparatus and method for improving signal-to-jamming ratio in a spread spectrum receiver
02/01/2000US6021137 Data collection system
02/01/2000US6021111 Unit switching apparatus with failure detection
02/01/2000US6020936 TV/FM receiver for multimedia applications
02/01/2000US6020881 Graphical user interface with method and apparatus for interfacing to remote devices
02/01/2000US6020839 Analog technique to detect asymmetric radio frequency pulses
02/01/2000US6020789 High frequency amplifier, and a communication receiver or transceiver
02/01/2000US6020787 Method and apparatus for amplifying a signal
02/01/2000US6020672 Surface acoustic wave converter with improved frequency characteristics, surface acoustic wave device using such converter, and communication system using such device
02/01/2000US6020085 Battery pack construction and method of using same
02/01/2000CA2175861C Power control method and apparatus suitable for use in a radio communication device
02/01/2000CA2162937C Transmitter-receiver
02/01/2000CA2160672C Single and multiple channel block adaptive methods and apparatus for active sound and vibration control
02/01/2000CA2130667C Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system
02/01/2000CA2127672C Mobile radio system
01/2000
01/31/2000CA2258826A1 Device for and method of detecting interference waves
01/27/2000WO2000004738A1 Technique for reduction of awake time in a wireless communication device utilizing slotted paging
01/27/2000WO2000004709A1 Interactive television program guide with remote access
01/27/2000WO2000004686A1 Data carrier with at least two demodulators for receiving ask signals of differing modulation index
01/27/2000WO2000004670A2 Method for transmitting information via digital transmission signals
01/27/2000WO2000004662A1 System and method for encoding an audio signal, by adding an inaudible code to the audio signal, for use in broadcast programme identification systems
01/27/2000WO2000004659A2 Radio communications unit
01/27/2000WO2000004658A1 Interference prevention in a radio communications system