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)
12/1999
12/01/1999CN1237008A Array antenna radio communication device
12/01/1999CN1237005A Medium filter, medium antenna diplexer and communicator apparatus
11/1999
11/30/1999US5995898 RFID system in communication with vehicle on-board computer
11/30/1999US5995854 Accessory for a mobile communication device
11/30/1999US5995851 Outdoor receiver system of a mobile communication base station
11/30/1999US5995827 Method of muting a non-speaking cellular telephone caller participating in a conference call
11/30/1999US5995820 Apparatus and method for calibration of sleep mode clock in wireless communications mobile station
11/30/1999US5995818 Low noise block downconverter
11/30/1999US5995817 Device for varying the cutoff frequency of a low-pass filter
11/30/1999US5995815 Multiple band receiver
11/30/1999US5995814 Single-stage dual-band low-noise amplifier for use in a wireless communication system receiver
11/30/1999US5995813 Radio telephone and independently controlled booster
11/30/1999US5995809 Portable radio apparatus
11/30/1999US5995808 Radio selective call receiver such as a pager and method of displaying remaining time allowed for data retention after removal of a battery
11/30/1999US5995807 Method of switching a channel from a first propagation path to a second propagation path
11/30/1999US5995806 Radio data transmitter and receiver
11/30/1999US5995633 System and method for multiplexing control signals over data signal conductors
11/30/1999US5995592 Portable telephone unit and indication adapter
11/30/1999US5995571 Synchronizing apparatus for spread spectrum communications
11/30/1999US5995567 Radio frequency noise canceller
11/30/1999US5995565 Co-channel interference reduction
11/30/1999US5995556 Front end for GPS receivers
11/30/1999US5995555 Precoded waveshaping transmitter for a twisted pair which eliminates the need for a filter
11/30/1999US5995552 Radio equipment and peripheral apparatus
11/30/1999US5995541 Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's
11/30/1999US5995538 Spread spectrum multipath processor system and method
11/30/1999US5995537 Synchronism acquisition method and apparatus for correlation demodulation
11/30/1999US5995536 System for discrete data transmission with noise-like, broadband signals
11/30/1999US5995534 Ultrawide-band communication system and method
11/30/1999US5995519 FM multiplex broadcasting receiver
11/30/1999US5995499 Signal detection in a TDMA system
11/30/1999US5995496 Control of transmission power in wireless packet data transfer
11/30/1999US5995492 Method and apparatus for using duality to remotely communicate
11/30/1999US5995106 Graphical user interface for displaying and navigating in a directed graph structure
11/30/1999US5995054 Communications device
11/30/1999US5994952 Narrow band-pass interferometric filter having enhanced operational characteristics
11/30/1999US5994871 Charging of secondary cells using transmitted microwave energy
11/27/1999CA2272877A1 Mixer circuit arrangements
11/25/1999WO1999060782A1 Epg and advertisement on a remote control display
11/25/1999WO1999060763A2 Telematics device comprising the combination of a cellular telephone and an electronic navigation apparatus
11/25/1999WO1999060734A2 Apparatus for receiving signals
11/25/1999WO1999060729A1 Random access in a mobile telecommunications system
11/25/1999WO1999060723A1 Communications interface adapter
11/25/1999WO1999060718A1 Frequency-hopping radio system with hybrid direct-sequence/hopping mode during start-up
11/25/1999WO1999060717A1 Circuit and method for receiving or transmitting microwaves
11/25/1999WO1999060716A1 Method and device for modifying a radio frequency range of a radio transceiver
11/25/1999WO1999060715A1 Communicator having reconfigurable resources
11/25/1999WO1999060714A1 Personal communications unit
11/25/1999WO1999060713A1 Method and corresponding devices for processing data from external devices
11/25/1999WO1999060712A1 Method and corresponding devices for processing digital data accompanying and stemming from radio programs
11/25/1999WO1999060711A1 Radio receivers
11/25/1999WO1999060710A2 Wide frequency range couplers and detectors for power detection in multiple frequency band systems
11/25/1999WO1999060709A1 Method and apparatus for cooling heat-generating electronic components of radio base stations
11/25/1999WO1999060697A1 Voice operated switch for use in high noise environments
11/25/1999WO1999060662A1 Antenna arrangement and radio device
11/25/1999WO1999060511A1 Method of communications in a backscatter system interrogator, and backscatter communications system
11/25/1999WO1999060510A1 System for electronically identifying a plurality of transponders
11/25/1999DE19823186A1 Radiation protection for mobile telephone etc. users
11/25/1999DE19822616A1 Lichtquelle sowie Verfahren für die Übertragung von spektralkodierten Daten Light source and method for transmitting data spektralkodierten
11/25/1999DE19822371A1 Antenna arrangement for radio apparatus such as mobile or cordless telephone
11/24/1999EP0959637A2 Congestion tolerant home location register controller
11/24/1999EP0959621A1 Video copy control with plural embedded signals
11/24/1999EP0959620A1 Video with hidden in-band digital data
11/24/1999EP0959576A2 Light source and method for transmitting spectrally encoded data
11/24/1999EP0959574A2 Power saving system in a broadcast receiver, comprising an intermittent power supply to certain circuits only during periods when relevant data is being received
11/24/1999EP0959567A1 Diplexer for mobile phone
11/24/1999EP0959565A1 Oscillator and communications device
11/24/1999EP0959559A1 Direct broadcast satellite tuner
11/24/1999EP0959558A1 Stereo/bi-channel demodulator
11/24/1999EP0959557A1 Oscillator and communications device
11/24/1999EP0959518A1 Dielectric filter, dielectric duplexer, and transceiver
11/24/1999EP0958664A2 Audio compression
11/24/1999EP0958663A1 Identification transponder
11/24/1999EP0958662A1 Signal combining device and method for radio communication
11/24/1999EP0958661A1 A transceiver and a telecommunication system having a transceiver
11/24/1999EP0958660A2 A wireless communication device
11/24/1999EP0958659A2 Transmitter comprising a vco
11/24/1999EP0958657A1 A communication system, a communication device and a frequency synthesizer
11/24/1999EP0958653A1 Transmit signal generation with the aid of a receiver
11/24/1999EP0729670A4 A bidirectional amplifier
11/24/1999EP0712547B1 Power supply with improved efficiency, transmitter comprising such a power supply
11/24/1999CN1236531A Method and apparatus for generating timing signals in a radiocommunication unit
11/24/1999CN1236530A Interface system for providing hands-free operation of a radio telephone and communication to accessories in a mobile office environment
11/24/1999CN1236514A Transmission process for digital signal
11/24/1999CN1236512A A digital communication system having an automatically selectable transmission rate
11/24/1999CN1236510A Frame waveform mutual correction data signal demodulation method
11/24/1999CN1236509A Coherent demodulation with decision-directed channel estimation for digital communication
11/24/1999CN1236508A Transponder communication device
11/24/1999CN1236506A Digital communication device
11/24/1999CN1236502A Frequency synthesizer circuit for mobile stations
11/24/1999CN1236294A Electronic apparatus having environmentally sealed external enclosure
11/24/1999CN1236280A Synchronization detection device and its method
11/24/1999CN1236253A Battery pack changing type handheld wireless communication device
11/24/1999CN1236252A Housing assembly for portable radiotelephone
11/24/1999CN1236250A Portable radiotelephone arrangement
11/24/1999CN1236244A Direct conversion receiving apparatus with DC component cut function
11/24/1999CN1236242A Iterative channel estimation
11/24/1999CN1236237A Transmitting power controller and radio communication device
11/24/1999CN1236236A Spreading code estimating apparatus and spreading code estimating method
11/24/1999CN1236235A Base station apparatus and control method for transmitting power