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)
03/1999
03/23/1999CA2153682C Method and apparatus for multi-phase component downconversion
03/23/1999CA2123814C Audio/visual apparatus and remote-controller for the control thereof
03/23/1999CA2116733C Transmission apparatus for round-trip satellite
03/23/1999CA2073700C Source voltage control switching circuit
03/20/1999CA2247742A1 Cdma radio communication apparatus
03/20/1999CA2247725A1 Base station searching device
03/19/1999WO1999016035A1 Embedded code hopping system with bypass mode
03/19/1999CA2249008A1 High throughput embedded cope hopping system with bypass mode
03/18/1999WO1999013660A1 Carrier sensor
03/18/1999WO1999013626A1 Communication terminal, especially mobile telephone
03/18/1999WO1999013625A1 Auxiliary device connected to wireless portable telephone
03/18/1999WO1999013621A2 Unreliability detector apparatus and reproduction apparatus provided with the unreliability detector apparatus
03/18/1999WO1999013605A1 Method and apparatus for providing orthogonal spot beams, sectors, and picocells
03/18/1999WO1999013599A1 Method for generating quasi-orthogonal code and spreader using the same in mobile communication system
03/18/1999WO1999013595A1 Systems and methods for sharing reference frequency signals within a wireless mobile terminal between a wireless transceiver and a global positioning system receiver
03/18/1999WO1999013594A1 Apparatus and method for radio communication
03/18/1999WO1999013593A1 System and method for monitoring and recording radio listener data
03/18/1999WO1999013592A1 Totem pole mixer having grounded serially connected stacked fet pair
03/18/1999WO1999013591A1 Receiver in an antenna base
03/18/1999WO1999013590A1 Rf transmitter
03/18/1999WO1999013589A1 Audio processor
03/18/1999WO1999013527A1 Rf coupler for wireless telephone cradle
03/18/1999WO1998059448A3 Prioritized pilot searching in a code-division multiple access communication system
03/18/1999DE19841236A1 High frequency device
03/17/1999EP0902564A1 Method for digital signals, specially radio data signals, evaluation
03/17/1999EP0902563A1 Detection method for the transmitter identification information signal in the null symbol of a DAB stream
03/17/1999EP0902549A2 Device and method for bi-orthogonal code hopping multiple access communication
03/17/1999EP0902548A2 Broadcast receiver
03/17/1999EP0902547A2 Improved power supply system for a packet-switched radio transmitter
03/17/1999EP0902546A1 Communication protocol between a transmitter-receiver unit and transponders
03/17/1999EP0902495A2 Signal distributing/synthesizing apparatus
03/17/1999EP0901725A1 An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio transmitter
03/17/1999EP0901724A1 Method for processing of data with a radio receiver
03/17/1999EP0901722A1 Subscriber unit for cdma wireless communication system
03/17/1999EP0901721A1 Device and method for radio transmitters
03/17/1999EP0901718A1 Method and apparatus for splicing compressed information streams
03/17/1999EP0901714A1 An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio receiver
03/17/1999EP0830750B1 Apparatus and method of transmitting and receiving information in a wireless telecommunications system
03/17/1999EP0774182A4 Method and apparatus for a radio system operating on shared communication channels
03/17/1999EP0679312A4 An information transmission system for increasing the effective rate of transfer of information.
03/17/1999EP0532552B1 Time based signal detector
03/17/1999CN2311117Y 电磁波屏蔽器 Electromagnetic shielding
03/17/1999CN1211358A Method for unlicensed band port to autonomously determine interference threshold and power level
03/17/1999CN1211356A Multichannel Receiver using analysis by synthesis
03/17/1999CN1211355A Linear transmitter using predistortion
03/17/1999CN1211354A Temperature compensation circuit for a crystal oscillator and method of providing same
03/17/1999CN1211324A GPS receiver and method for processing GPS signals
03/17/1999CN1211141A TV receiver having analog/digital dual tuner
03/17/1999CN1211120A Receiving apparatus, receiving method, and terminal unit for use with radio system
03/17/1999CN1211111A Spread spectrum receiver and transmission power control method
03/17/1999CN1211110A Lightly touching, digital gating, electromic tuning, and presetting station receiver
03/17/1999CN1210669A Automatic bait feeding system
03/17/1999CN1042587C Communication method/apparatus/system capable of performing FDMA transmission
03/17/1999CN1042586C Transducer with inner conductive cover for EMI shielding
03/17/1999CN1042585C Apparatus for automatically controlling gain, communication apparatus, and method for automatically controlling gain
03/17/1999CN1042584C Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression
03/17/1999CN1042583C Pager with message display
03/16/1999US5884214 GPS receiver and method for processing GPS signals
03/16/1999US5884200 Radio communication apparatus having a plurality of identification codes
03/16/1999US5884199 Portable wireless receiver
03/16/1999US5884198 Body conformal portable radio and method of constructing the same
03/16/1999US5884197 Wireless portable transceiver arranged for providing isolation between radio frequency and audio signals
03/16/1999US5884196 Method and apparatus of preserving power of a remote unit in a dispatch system
03/16/1999US5884191 Interface system for providing hands-free operation of a radiotelephone and accessories in a mobile office environment
03/16/1999US5884189 Multiple-modes adaptable radiotelephone
03/16/1999US5884186 Portable radio apparatus equipped with function to display received message information and information process system used for portable radio apparatus
03/16/1999US5884168 Multiple cellular systems with limited sim card information
03/16/1999US5884156 Portable communication device
03/16/1999US5884155 Pager with coin holder and/or storage compartment
03/16/1999US5884153 Delayed automatic gain control circuit
03/16/1999US5884151 Switching device for short time mute switching of reproduction of NF-signal in radio receiver
03/16/1999US5884149 Mobile station having dual band RF detector and gain control
03/16/1999US5884146 Apparatus and method for establishing a radio frequency communications link between a controller and a remote controllable system
03/16/1999US5884048 Digital audio signal processor having small input buffer
03/16/1999US5883927 Digital wireless telecommunication device for reduced interference with hearing aids
03/16/1999US5883925 Pulse code modulation compression mechanism
03/16/1999US5883922 FSK communication device for digital information
03/16/1999US5883920 Spread spectrum receiving apparatus with battery saving function
03/16/1999US5883899 Code-rate increased compressed mode DS-CDMA systems and methods
03/16/1999US5883786 SIM card containment assembly for an electronic apparatus
03/16/1999US5883553 Filter unit adapted for miniaturization and for selecting a particular signal where a plurality of signals different in bandwidth coexist
03/16/1999US5883548 Demodulation system and method for recovering a signal of interest from an undersampled, modulated carrier
03/16/1999CA2125718C A modem with received signals and transmitted signals comprising signal sets
03/16/1999CA2116127C Method and apparatus for canceling spread-spectrum noise
03/11/1999WO1999012319A1 A local communication system, method of operation and stations for use therein
03/11/1999WO1999012317A1 Digital transmission using subband coding
03/11/1999WO1999012313A2 A local communication system and apparatus for use therein
03/11/1999WO1999012295A1 Cell searching in a cdma communications system
03/11/1999WO1999012275A1 Adaptive power control of a pilot sub-channel
03/11/1999WO1999012273A1 Synchronization to a base station and code acquisition within a spread spectrum communications system
03/11/1999WO1999012245A2 Portable electronic device and method
03/11/1999WO1998058451A3 Digital communication device
03/11/1999WO1998051108A3 Hand-held cellular telephone with power management features
03/11/1999WO1998048589A3 Holding a connection in an isdn network with a dect intermediate system
03/11/1999WO1998045961A3 Methods and apparatus for burst-mode cdma dsss communications receiving systems
03/11/1999WO1998044655A3 Self-synchronizing equalization techniques and systems
03/11/1999WO1998037638A3 Highly bandwidth-efficient communications
03/11/1999EP0917768A3 Correlator method and apparatus
03/11/1999DE19818020A1 Signal compression circuit
03/11/1999DE19739395A1 Empfänger in einem Antennenfuß Receiver antenna in a