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)
12/1995
12/20/1995EP0688107A1 AM radio receiver
12/20/1995EP0688082A1 Portable communication apparatus preventing trouble when battery wears
12/20/1995EP0687375A1 Loop powered process control transmitter
12/20/1995EP0527998B1 A method and a device for controlling a radio transmitter
12/20/1995CN2215784Y Protective case for remote emitter
12/20/1995CN1113669A Method and apparatus for operating with a hopping control channel in a communication system
12/20/1995CN1113645A Protecting device for protecting an electronic equipment in order to use the electronic equipment under a hostile enviroment
12/20/1995CN1113626A Portable telephone
12/20/1995CN1113621A Radio station apparatus and signal transmission method thereof
12/20/1995CN1113619A Method and device for processing a signal
12/19/1995US5477541 Addressing technique for storing and referencing packet data
12/19/1995US5477532 Radio transceiver
12/19/1995US5477487 Audio auto-repeating device and method
12/19/1995US5477232 Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies
12/19/1995US5477215 Arrangement for simultaneously interrogating a plurality of portable radio frequency communication devices
12/19/1995US5477204 Radio frequency transformer
12/19/1995US5477195 Near optimal quasi-coherent delay lock loop (QCDLL) for tracking direct sequence signals and CDMA
12/19/1995US5477192 Amplifier suitable for use in a radiotelephone
12/14/1995WO1995034174A2 Spread aloha cdma data communications
12/14/1995WO1995034167A1 Method and apparatus for encoding, transmitting, storing and decoding of data
12/14/1995WO1995034154A2 Method for synchronizing subscriber equipments, a base station and a subscriber equipment
12/14/1995WO1995034140A1 Method and apparatus for cancelling interference in signals having undergone multipath
12/14/1995WO1995034139A1 Method and apparatus for subscriber power level adjustment in a communication system
12/14/1995WO1995034137A1 Transceiver interface unit for aircraft communication
12/14/1995WO1995034121A1 Power supply with improved efficiency, transmitter comprising such a power supply
12/14/1995WO1995030289A3 A direct sequence cdma coherent uplink detector
12/14/1995WO1995030286A3 Encoding system and encoding method for encoding a digital signal having at least a first and a second digital signal component
12/14/1995DE4420121A1 Portable radiotelephone subscriber's appts. with external antenna and pivotable shield
12/14/1995DE19515783A1 Radio receiver with high S=N ratio tuner
12/14/1995CA2192341A1 Method and apparatus for encoding, transmitting, storing and decoding of data
12/13/1995EP0687082A1 Method of detecting PTY burst signal in a radio data system receiver
12/13/1995EP0687081A1 RDS receiver using EON information
12/13/1995EP0687080A1 Receive signal level detection system
12/13/1995EP0687077A2 Radio transmission system with mobile stations using a intelligent frequency hopping method
12/13/1995EP0687074A2 Spread spectrum communication method
12/13/1995EP0687073A2 Apparatus for encoding digital signals
12/13/1995EP0687060A2 Power amplifier
12/13/1995EP0687059A1 Image rejection apparatus for a base signal converted to an intermediate frequency
12/13/1995EP0686928A2 System and method for initiating communications between a controller and a selected subset of multiple transponders in a common RF field
12/13/1995EP0686332A1 Cell based wide area network alternative access telephone and data system
12/13/1995EP0686326A1 Transducer with inner conductive cover for emi shielding
12/13/1995EP0686324A1 Receiver having an adjustable bandwidth filter
12/13/1995EP0686318A1 High-frequency wideband tuner
12/13/1995EP0629322B1 Adjacent channel controller for radio receiver
12/13/1995EP0431201B1 Linear transmitter
12/13/1995CN2215161Y Solar cell charging power supply box for mobile telephone
12/13/1995CN1113404A Electronic device for controlling application of a charging current thereto and associated method therefor
12/13/1995CN1113403A Path gain estimation in a receiver
12/13/1995CN1113401A High-efficiency encoding method, high-efficiency decoding method, high-efficiency encoding device, high-efficiency decoding device, high-efficiency encoding/decoding system and recording media
12/13/1995CN1113399A Portable music performance device
12/12/1995US5475877 Mobile wireless set with improved intermittent operation control and reduced power consumption
12/12/1995US5475876 Tuner unit having electromagnetically isolated UHF and VHF section with no noise
12/12/1995US5475875 Antenna switching circuit employing FETs for reduced power consumption
12/12/1995US5475873 Rectification feedback high frequency circuit arrangement including an adaptive filter
12/12/1995US5475872 Portable telephone with external transmitter-receiver connections
12/12/1995US5475871 Communication system with control signal based tuning
12/12/1995US5475869 Radio base station capable of distinguishing between interference due to collisions of outgoing call signals and an external interference noise
12/12/1995US5475789 Method of compressing an audio signal using adaptive bit allocation taking account of temporal masking
12/12/1995US5475707 Broadband communications system
12/12/1995US5475681 Wireless in-building telecommunications system for voice and data communications
12/12/1995US5475677 Compatible licensed and unlicensed band portable handset unit for TDMA wireless communications system
12/12/1995US5475377 Electronic identification system having remote automatic response capability and automatic identification method thereof
12/12/1995US5475295 Electronic device capable of checking power supply status
12/12/1995CA2098993C Intermodulation compensation in a receiver
12/12/1995CA2061527C Method and apparatus for controlling coefficients of adaptive filter
12/12/1995CA2060117C Predistorter for linearization of electronic and optical signals
12/12/1995CA2032765C Variable rate encoding and communicating apparatus
12/07/1995WO1995033350A1 Wideband wireless basestation making use of time division multiple-access bus to effect switchable connections to modulator/demodulator resources
12/07/1995WO1995033326A2 Method and arrangement for call setup in telecommunication networks using signaling aided redialing
12/07/1995WO1995033322A1 Data communication system having channel switching means
12/07/1995WO1995033319A1 Unintentional power radiation fm transmission system
12/07/1995WO1995033318A1 Multiplex receiver and multiplex receiving system broadcasting
12/07/1995WO1995033311A1 Ambiguity resolution in direct sequence spread spectrum modulation systems
12/07/1995WO1995033310A1 Apparatus for converting tv audio signals for reception on a nearby am and/or fm receiver
12/07/1995WO1995033215A1 Radio range finder
12/07/1995DE4419310A1 Electronic equipment cabinet esp. hi=fi installation and TV set
12/07/1995DE4418255A1 Multi-functional domestic remote control device
12/07/1995CA2189860A1 Data communication system having channel switching means
12/07/1995CA2189119A1 Method and arrangement for call setup in telecommunication networks using signaling aided redialing
12/07/1995CA2151017A1 Linear receiver
12/06/1995EP0685954A2 Waterproofed portable telephone
12/06/1995EP0685945A1 Antenna apparatus having antenna elements for different frequencies
12/06/1995EP0685937A1 Multipath eliminating filter
12/06/1995EP0685936A2 Adaptive antenna matching
12/06/1995EP0685901A2 A feed structure for use in a wireless communication system
12/06/1995EP0685800A2 Method and apparatus for digital signal processing
12/06/1995EP0685133A1 Voice transmission systems with voice cancellation
12/06/1995EP0685129A1 Method and system for the dynamic modification of control parameters in a transmitter power control system
12/06/1995EP0645063A4 Receiver automatic gain control.
12/06/1995CN2214717Y Mobile telephone high frequency electromagnetic wave radiation protecting screen
12/06/1995CN2214716Y Safety protecting switch for remote-control device
12/06/1995CN1113096A Digital signal encoding device, its decoding device, and its recording medium
12/06/1995CN1113056A Communication method/apparatus/system capable of performing FDMA transmission
12/06/1995CN1112848A Remote control method and system therefor
12/05/1995US5473631 Simultaneous transmission of data and audio signals by means of perceptual coding
12/05/1995US5473601 Frequency reuse technique for a high data rate satellite communication system
12/05/1995US5473319 Paging receiver
12/05/1995US5473317 Audio-visual system having integrated components for simpler operation
12/05/1995US5473295 Saw notch filter for improving stop-band attenuation of a duplex filter
12/05/1995US5473293 High-frequency switch