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)
01/2000
01/20/2000WO2000003366A1 Aircraft communication system
01/20/2000WO2000003351A1 Analog interface for autonomous data exchange circuit
01/20/2000WO1999059220A3 Impedance-matching device
01/20/2000WO1999055017A8 High-speed pc modem connection system
01/20/2000DE19935384A1 Receiver for digitized audio or image data such as radio or television program data from the Internet using two bidirectional interfaces for data exchange
01/20/2000DE19932437A1 Radio remote control for servo motor on model airplane, helicopter
01/20/2000DE19927710A1 Transceiveranordnung für ein Smart-Antennensystem in einer mobilen Kommunikationsbasisstation Transceiver arrangement for a smart antenna system in a mobile communication base station
01/20/2000DE19927266A1 Receiver for digital audio broadcast signals, controls tuning unit to receive signal as long as frequency is tuned in and error rate is below threshold
01/20/2000DE19832203A1 Activating electrically operated, current-consuming component through code word contained in data message of predetermined format
01/20/2000DE19831942A1 Empfänger eines Telekommunikationsnetzes Receiver of a telecommunication network
01/20/2000DE19831767A1 Access control using a bar type turnstile that has a built in antenna to receive control signals from access control data carrier
01/20/2000DE19831627A1 Control with transmission reception and control unit for switching off mobile telephones and other electronic devices or to activate on-vehicle control unit in locations where interference may occur
01/20/2000DE19831421A1 Person finding apparatus for locating people buried in avalanches etc. using audio signal frequency analysis
01/20/2000DE19831202A1 Reception and playback method for sound data transmitted over world wide web
01/20/2000DE19830247A1 Integrated mobile-phone handsfree kit assembly for combining with a vehicular stereo loudspeaker system
01/20/2000CA2336993A1 Device for obtaining, transmitting, receiving and producing audible signals
01/19/2000EP0973354A2 Optical transmission system including optical restoration
01/19/2000EP0973311A2 Portable data terminal having built-in radio communications device
01/19/2000EP0973310A1 Radiotelephone with a keyboard locking function
01/19/2000EP0973307A2 Distortion compensation system
01/19/2000EP0973287A2 Receiver for receiving text broadcasts which are transmitted in addition to an audio broadcast programme
01/19/2000EP0973286A2 Means for simultaneous reception of a plurality of broadcasting signals
01/19/2000EP0973284A1 A method for determining access time of repeatedly broadcasted objects
01/19/2000EP0973273A1 Method for transmitting in successive time slots
01/19/2000EP0973272A2 Correlation detection apparatus and cdma receiving apparatus
01/19/2000EP0973271A1 Software-defined transceiver for a wireless telecommunications system
01/19/2000EP0973270A2 Variable impedance matching circuit and portable phone employing the same
01/19/2000EP0973269A2 Audio signal noise reduction system
01/19/2000EP0973264A1 Decoding chip streams
01/19/2000EP0973257A2 Surface acoustic wave matched filter
01/19/2000EP0973255A1 90 degree phase shifter and image rejection mixer
01/19/2000EP0973254A1 Local oscillator leak reduction circuit
01/19/2000EP0973228A1 RF equipment with a rod antenna
01/19/2000EP0973138A2 Integrated motion detector in a mobile communications device
01/19/2000EP0973117A2 System for short range wireless data communication to inexpensive endpoints
01/19/2000EP0973088A2 Telecommunication network receiver
01/19/2000EP0972406A1 Method and apparatus for preventing fraudulent access in a conditional access system
01/19/2000EP0972384A2 Transmission method and radio system
01/19/2000EP0972370A1 Method and transmitter device for transmitting data symbols from user signals via a radio interface or a mobile communication system
01/19/2000EP0972360A2 Power control of rf signals with booster module
01/19/2000EP0972354A1 Apparatus and method for reducing magnetic fields in radio telephones
01/19/2000EP0972353A1 Tuning method and transceiver unit
01/19/2000EP0972351A2 Global tuner
01/19/2000EP0972350A1 Multiplex broadcast receiving method and receiver
01/19/2000EP0972349A1 Interference suppression using modal moment estimates
01/19/2000CN2359838Y Double-twisted-line line intercom
01/19/2000CN2359837Y Metal casted housing of radio-frequency amplifying and light emission receiving equipment
01/19/2000CN1242127A Circuit for eliminating external interference signals in code division multiple access mobile phone
01/19/2000CN1242126A Apparatus for eliminating external interference signals in code division multiple access mobile phone and method therefor
01/19/2000CN1241883A Adjustable height ground level serviceable cellsite
01/19/2000CN1241881A Transmitter
01/19/2000CN1241880A Data transmission method and radio system
01/19/2000CN1241870A Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system
01/19/2000CN1241857A Adaptive acoqisition system for CDMA and spread spectrum systems compensating for frequency offset and noise
01/19/2000CN1241856A Terminal apparatus for digital broadcasting service, its controlling method and broadcaster
01/19/2000CN1241855A Apparatus and method for suppressing frequency interference
01/19/2000CN1241848A Pilot symbols
01/19/2000CN1241846A SIM card incorporated in battery pack of terminal
01/19/2000CN1048606C Method and apparatus for coherent communication in a spread-spectrum communication system
01/19/2000CN1048604C Apparatus and method for operating a phase locked loop frequency synthesizer responsive to radio frequency channel spacing
01/19/2000CN1048603C A method for minimizing a phase error of a transmitter
01/19/2000CN1048602C Embedded transmission line coupler for radio frequency signal amplifiers
01/19/2000CN1048601C Signal processing method between analog driver and power amplifier and interface circuit
01/19/2000CN1048600C Road payment system using radio frequency recognition device, and method for realizing the device thereof
01/19/2000CN1048599C Face image communication device and its communication method
01/18/2000US6016473 Low bit-rate spatial coding method and system
01/18/2000US6016432 Electronic metering equipment system
01/18/2000US6016423 Mobile communicator system
01/18/2000US6016422 Method of and apparatus for generating radio frequency quadrature LO signals for direct conversion transceivers
01/18/2000US6016312 Radiotelephone and method for clock calibration for slotted paging mode in a CDMA radiotelephone system
01/18/2000US6016219 Optical protection switching system
01/18/2000US6016170 Double conversion television tuner
01/18/2000US6016158 Object oriented communication network
01/18/2000US6016126 Non-protruding dual-band antenna for communications device
01/18/2000US6016119 Method and apparatus for determining the location of an object which may have an obstructed view of the sky
01/18/2000US6016111 Digital data coding/decoding method and apparatus
01/18/2000US6016108 Antenna tuning control system
01/18/2000CA2199456C Wireless communication device with antenna-activated switch
01/16/2000CA2277745A1 Telecommunications network receiver
01/16/2000CA2274742A1 Transmission process in successive windows
01/16/2000CA2272503A1 A method for determining access time of repeatedly broadcast objects
01/15/2000CA2272235A1 Optical transmission system including optical restoration
01/13/2000WO2000002427A1 Floating electric apparatus
01/13/2000WO2000002398A2 Method for transmitting power control signal in mobile communication system
01/13/2000WO2000002397A2 Device and method for cancelling code interference in a cdma communication system
01/13/2000WO2000002396A2 Method for searching cells in mobile communication system
01/13/2000WO2000002351A1 Method to control a network device in a network comprising several devices
01/13/2000WO2000002344A2 Method and device for wireless control of at least two different devices
01/13/2000WO2000002338A1 Cdma receiving method and circuit
01/13/2000WO2000002337A1 Bandwidth reservation
01/13/2000WO2000002332A2 Method to perform a scheduled action of network devices
01/13/2000WO2000002327A1 Spread spectrum communication system
01/13/2000WO2000002325A1 Receiver synchronizer using chirps sequences
01/13/2000WO2000002324A1 A predistorter
01/13/2000WO2000002323A1 Apparatus and method for implementing a low-noise amplifier
01/13/2000WO2000002299A1 Improved power supply assembly for hand-held communications device
01/13/2000WO1999062190A3 Detection of interfering signal in radio receiver
01/13/2000WO1999057817A3 Code division multiple access transmitter and receiver
01/13/2000DE19830264A1 Protective casing for mobile telephone
01/13/2000DE19829897A1 Vorrichtung zur Wiedergabe von Audiosignalen Apparatus for reproducing audio signals