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
12/05/1995US5473265 Circuit configuration for the generation of a line terminating impedance
12/02/1995CA2147399A1 Feed structure for use in a wireless communication system
11/1995
11/30/1995WO1995032593A1 Method and apparatus for rapid handover in a mobile radio system in the presence of abrupt radio signal attenuation
11/30/1995WO1995032583A1 Improved electronic television program schedule guide system and method
11/30/1995WO1995032572A1 Charge-coupled-device based transmitters and receivers
11/30/1995WO1995032556A1 Arrangement for determining a signal spectrum of a wideband digital signal and for deriving bit allocation information in response thereto
11/30/1995WO1995028772A3 Receiving method and receiver
11/30/1995DE4418234A1 Coded transmission and reception unit for contacting partners with common interest
11/30/1995DE19517957A1 Tuner assembly accepting several frequency bands
11/30/1995DE19517523A1 Portable or mobile telephone subscriber's appts.
11/29/1995EP0684721A2 Data bus communication
11/29/1995EP0684711A1 Method of and apparatus for selecting a broadcast station using programme type information transmitted on a subcarrier in the programme signal
11/29/1995EP0684705A2 Multichannel signal coding using weighted vector quantization
11/29/1995EP0684704A2 A diversity antenna for a wrist telephone
11/29/1995EP0684703A1 Circuit for removing random fm noise
11/29/1995EP0684590A2 Voice storage communication system, receiving station therefor, and method of receiving a communication packet
11/29/1995EP0684589A2 Voice storage communication system, receiving station therefor, and method of receiving a communication packet
11/29/1995EP0683960A1 Local communication system and station for use in such a system
11/29/1995EP0683959A1 Local communication system and station for use in such a system
11/29/1995EP0683958A1 Local communication system and station for use in such a system
11/29/1995EP0683939A1 Radio transceiver comprising an arrangement for compensating for a dc component
11/29/1995EP0683938A1 Method and apparatus of frequency generation for use with digital cordless telephones
11/29/1995EP0683923A1 Method of producing a radio frequency transponder with a molded environmentally sealed package
11/29/1995CN2214052Y Multifunction audio-frequence signal change machine
11/29/1995CN1112799A Method and apparatus for encoding digital signals, method and apparatus for decoding the coded signals, and medium for recording the coded signals
11/29/1995CN1112763A Audio visual system
11/29/1995CN1112738A Antenna element mounting in a radio
11/28/1995US5471668 Combined transmitter/receiver integrated circuit with learn mode
11/28/1995US5471667 Waterproof type unit casing
11/28/1995US5471666 Electronic instrument casing
11/28/1995US5471665 Differential DC offset compensation circuit
11/28/1995US5471664 Clockwise and counterclockwise circularly polarized wave common receiving apparatus for low noise converter
11/28/1995US5471663 Expanded microcomputer system for controlling radio frequency interference
11/28/1995US5471661 Ultra high speed scan system
11/28/1995US5471660 Channel selecting method for radio receiver and highspeed scanning type radio receiver
11/28/1995US5471659 Dual radio
11/28/1995US5471658 Hermetically sealed communication system with rechargeable battery
11/28/1995US5471656 Communication apparatus utilizing high power amplifier
11/28/1995US5471655 Method and apparatus for operating a radiotelephone in an extended stand-by mode of operation for conserving battery power
11/28/1995US5471654 Transmitting/receiving unit having automatic gain control system with temperature compensation
11/28/1995US5471653 Portable radio apparatus and mount structure therefor
11/28/1995US5471652 Frequency synthesizer and multiplier circuit arrangement for a radio telephone
11/28/1995US5471651 Method and system for compressing the dynamic range of audio signals
11/28/1995US5471647 Method for minimizing cross-talk in adaptive transmission antennas
11/28/1995US5471558 Signal processing apparatus
11/28/1995US5471534 Devices, systems and methods for composite signal decoding employing interpolation filter
11/28/1995US5471503 Scanning method for receiving a transmission in a communication system with slow frequency hopping and coding
11/28/1995US5471502 Bit clock regeneration circuit for PCM data, implementable on integrated circuit
11/28/1995US5471469 Method of resolving media contention in radio communication links
11/28/1995US5471187 Data signal comparation with self-adjusting threshold
11/28/1995US5471018 Audio or video apparatus with a built-in loudspeaker
11/28/1995CA2068425C Fast phase shift adjusting method and device for linear transmitter
11/28/1995CA2063640C Satellite telecommunication installation capable of serving several coverage zones
11/28/1995CA2048148C Transmitter
11/28/1995CA2044774C Receiver for a cellular mobile radio communication system
11/24/1995CA2148725A1 Antenna apparatus
11/23/1995WO1995031871A1 Television program record scheduling and satellite receiver control using compressed codes
11/23/1995WO1995031864A1 Charge-coupled-device base data-in-voice modem
11/23/1995WO1995031863A1 Communication terminal and portable telephone set
11/23/1995WO1995028771A3 Method for determining a phase error in a radio-frequency signal, and a receiver
11/23/1995WO1995026594A3 Transmission of tuning data of broadcasting transmitters to a receiver
11/23/1995DE4430987C1 Aerial switching device for diversity telecommunication system
11/23/1995DE4417756A1 Satellite receiver for television and/or radio signals
11/23/1995DE19517152A1 Remote control system for audio-video units
11/22/1995EP0683619A2 Method and apparatus for the diversion of a communication cell stream to an alternative path
11/22/1995EP0683587A1 Attachment device for a mobile station
11/22/1995EP0683470A2 IC card-type radio communication device
11/22/1995EP0682850A1 Method and apparatus for compressing, method for transmitting, and method and apparatus for expanding compressed multi-channel sound signals, and recording medium for compressed multi-channel sound signals
11/22/1995EP0540630B1 Programmable digital acquisition and tracking controller
11/22/1995CN2213405Y Common aerial TV system duplexer
11/22/1995CN2213404Y Wrist watch type calling apparatus
11/22/1995CN2213403Y Cabinet for beeper
11/22/1995CN1112382A A latching system
11/22/1995CN1112317A Self-adaptive noise filter
11/22/1995CN1112314A Identifying and/or sensing system
11/22/1995CN1112313A Broadcast signal receiver
11/22/1995CN1030364C Interference detection technique
11/21/1995US5469474 Quantization bit number allocation by first selecting a subband signal having a maximum of signal to mask ratios in an input signal
11/21/1995US5469471 Method and apparatus for providing a communication link quality indication
11/21/1995US5469470 Spread spectrum communication system using two-predetermined-code pseudo-noise signals
11/21/1995US5469469 Composite spread spectrum signal including modulator demodulator
11/21/1995US5469468 For communicating data from a satellite to remote pager units
11/21/1995US5469465 Method and apparatus for mitigating distortion effects in the determination of signal usability
11/21/1995US5469427 Transmission line control system and interface unit therefor
11/21/1995US5469287 Laser light receiving device with improved noise discrimination
11/21/1995US5469211 Video camera
11/21/1995US5469173 Monitoring phase characteristics of BPSK and CW signals
11/21/1995US5469152 Remote control device that transmits signals indicating termination of key pressing operations
11/21/1995US5469115 Method and apparatus for automatic gain control in a digital receiver
11/21/1995US5469105 Transmitter and power amplifier therefor
11/16/1995WO1995031079A1 A method for validating a communication link
11/16/1995WO1995031049A1 Companding system (lincompex) using pre- and de-emphasis
11/16/1995WO1995031048A1 Radiation shielding apparatus for a radio transmitting device
11/16/1995WO1995026593A3 Method for interference cancellation in a cellular cdma network
11/16/1995DE4432431C1 Microwave doppler module for velocity measurement or movement detection
11/16/1995DE4424778C1 Verfahren zur Übertragung und Verfahren zum Empfang von Lokalen Rundfunkprogrammen in einem Gleichwellennetz sowie zugehörige Sender und Empfänger A method for transmitting and receiving method of local radio programs in a single frequency network and associated transmitter and receiver
11/16/1995DE4294697C2 Method for permitting data entry without keypad
11/16/1995DE19517126A1 Multiplex signal receiver with changeover function
11/15/1995EP0682458A2 Radio communication device
11/15/1995EP0682437A2 Device and method for automatically controlling sound volume in a communication apparatus