Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
08/1999
08/26/1999DE19803298A1 Combined arrangement of clamping cover and mounted radio-controlled receiver
08/26/1999CA2321212A1 Power supply assembly for portable phone
08/26/1999CA2320699A1 A method and a circuit for am demodulation
08/26/1999CA2319553A1 Substrate antenna incorporating an element preventing the coupling of energy between antenna and conductors
08/26/1999CA2287441A1 Data communications terminal and method of adjusting a power signal generated therefrom
08/26/1999CA2260528A1 Channel tracking in a mobile receiver
08/25/1999EP0938242A2 Mobile wireless terminal and power controlling method
08/25/1999EP0938222A2 Mobile radio telephone and method for operating the same
08/25/1999EP0938199A2 Means for determining available reception frequencies in a receiver for the reception of digital broadcasts
08/25/1999EP0938198A1 Variable rate transmission and reception methods, and variable rate transmission and reception devices
08/25/1999EP0938192A2 Pseudo-noise sequence generating apparatus
08/25/1999EP0938191A2 Hybrid amplifier
08/25/1999EP0938190A2 Integrated global positioning system receiver
08/25/1999EP0937975A2 Microtome
08/25/1999EP0937370A1 Switching transmission units to an equivalent circuit for the purposes of bidirectional asynchronous cell transfer
08/25/1999EP0937366A2 Method of combining several signals, and base station
08/25/1999EP0937359A1 Multiple user profile remote control
08/25/1999EP0937339A1 Calibration of n-port receiver
08/25/1999EP0937338A1 Method and apparatus for reducing standby current in communications equipment
08/25/1999EP0937333A1 Frequency synthesizer circuit for mobile stations
08/25/1999EP0937313A1 Small antenna for portable radio equipment
08/25/1999EP0937312A1 Antenna adapter
08/25/1999EP0862816B1 Method and device for removing signal residues in quadrature signal modulator-demodulators
08/25/1999EP0846375B1 Process and device for the scalable coding of audio signals
08/25/1999EP0683958B1 Local communication system and station for use in such a system
08/25/1999EP0509037B1 Automatic data restoral for modems
08/25/1999CN2335329Y Loss-proof alarm for mobile telephone set
08/25/1999CN2335314Y Casing installation mechanism for intercom
08/25/1999CN2335313Y High frequency front end frequency expander for ultrahigh frequency waveband receiver
08/25/1999CN2335312Y Protective cover for remote controller
08/25/1999CN2335311Y Sensor target imitation device for surge information radio transmission
08/25/1999CN1227027A Improved channel spacing for distortion reduction
08/25/1999CN1227020A Variable rate transmission and reception methods and devices
08/25/1999CN1227008A Charging of secondary cells using transmitted microwave energy
08/25/1999CN1226780A Controller of funger apparatus and method for controlling power supply to tuner of tuner apparatus
08/25/1999CN1226768A Base station transceiver for FH/CDMA system
08/25/1999CN1226767A Pseudo-noise generating apparatus
08/25/1999CN1226764A Rake receiver, and mobile unit and base station for portable telephone system and using the same
08/25/1999CN1226763A Device load variation protection circuit
08/24/1999US5943628 Radiotelephone proximity detector
08/24/1999US5943627 Mobile cellular phone
08/24/1999US5943624 Contactless smartcard for use in cellular telephone
08/24/1999US5943613 In a telecommunications device
08/24/1999US5943612 Radio receivers
08/24/1999US5943610 For a mobile terminal in a mobile communication network
08/24/1999US5943606 Determination of frequency offsets in communication systems
08/24/1999US5943375 Method to indicate synchronization lock of a remote station with a base station
08/24/1999US5943370 Direct conversion receiver
08/24/1999US5943367 Transmission system using time dependent filter banks
08/24/1999US5943362 Spread spectrum radio communication system
08/24/1999US5943361 In a spread spectrum communication system
08/24/1999US5943345 AM multiplexing broadcast apparatus
08/24/1999US5943333 Radio communications device and method
08/24/1999US5943331 Orthogonal code synchronization system and method for spread spectrum CDMA communications
08/24/1999US5943329 Code division multiple access mobile communication system
08/24/1999US5942987 Radio frequency identification system with write broadcast capability
08/24/1999CA2178382C Combined antenna apparatus and method for receiving and transmitting radio frequency signals
08/24/1999CA2141654C Data demodulation circuit and method for spread spectrum communication
08/19/1999WO1999041921A1 Improved gsm cellular terminal
08/19/1999WO1999041871A1 Multiple access method and system
08/19/1999WO1999041854A1 Method and system for facilitating timing of base stations in an asynchronous cdma mobile communications system
08/19/1999WO1999041851A1 Radio receiver that digitizes a received signal at a plurality of digitization frequencies
08/19/1999WO1999041850A2 A method and a system for controlling a macrodiversity connection through at least two radio network controllers
08/19/1999WO1999041847A1 Method and apparatus for performing rate determination using orthogonal rate-dependent walsh covering codes
08/19/1999WO1999041846A1 Flexible sliding correlator for direct sequence spread spectrum systems
08/19/1999WO1999041845A1 A data transmission method and a radio system
08/19/1999WO1999041844A1 A neural network based method for exponent coding in a transform coder for high quality audio
08/19/1999WO1999041843A2 Transmitting/receiving station having impedance-matched receiving means for transponder answer signals
08/19/1999WO1999041842A1 Tuning method and transceiver unit
08/19/1999WO1999041841A1 Integrated circuit for frequency conditioning in a radio transceiver working in the uhf range, especially a wireless telephone
08/19/1999WO1999041800A1 Power antenna apparatus and application thereof to wireless communication system
08/19/1999WO1999041693A1 Wireless rolling code security system
08/19/1999WO1999034529A3 Apparatus and method for code tracking in an is-95 spread spectrum communication system
08/19/1999WO1999014897A3 Frequency hopping piconets in an uncoordinated wireless multi-user system
08/19/1999DE19804476A1 Car radio with removable operating part
08/19/1999CA2321748A1 Multiple access method and system
08/19/1999CA2320316A1 Mobile communication unit with retractable antenna
08/19/1999CA2319559A1 Method and apparatus for performing rate determination using orthogonal rate-dependent walsh covering codes
08/18/1999EP0936766A1 Satellite broadcasting system
08/18/1999EP0936752A1 Transmission power control apparatus and method and radio communication apparatus
08/18/1999EP0936749A1 Adaptive receiver for CDMA communication system
08/18/1999EP0936748A2 Matched filter bank CDMA communication
08/18/1999EP0936747A2 Card-like wireless communication device
08/18/1999EP0936746A1 Carry case for a mobile telephone
08/18/1999EP0936745A2 Device load variation protection circuit
08/18/1999EP0936744A1 Carrier generating device for a digital demodulator of MPX signals
08/18/1999EP0936731A1 Feed forward amplifier
08/18/1999EP0936574A2 IC card and IC card system
08/18/1999EP0936571A2 IC card, IC card processor and IC card system
08/18/1999EP0935857A2 Method and arrangement for calculating correlation
08/18/1999EP0935854A1 Method and apparatus for performing data rate determination
08/18/1999EP0935852A1 Transponder for transmitting processed data to a base station over large distances and at a high data transfer rate
08/18/1999EP0935851A1 A digital communication device and a mixer
08/18/1999EP0935836A2 Portable electronic device and method
08/18/1999EP0935824A1 A radio telephone with high antenna efficiency
08/18/1999EP0935763A1 Measuring or security system
08/18/1999EP0935440A1 Method for wireless communication transfer with an implanted medical device
08/18/1999EP0783801A4 Digital agc for a cdma radiotelephone
08/18/1999EP0769227A4 Signal protection and monitoring system
08/18/1999EP0739575B1 Base station receiver equipment
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