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) |
---|
11/19/1992 | EP0513477A2 Preset type radio receiver |
11/19/1992 | EP0513313A1 Method for resetting the local oscillators of a receiver and device for implementing such method. |
11/19/1992 | DE4116126A1 Transmitter for frequency hopping operation - has hopping harmonic wave filter between HF power amplifier and aerial matching network |
11/18/1992 | CN2122454U Megaphone radio set |
11/18/1992 | CN1066353A Polling for detection of power supply or other failures of digital circuit |
11/18/1992 | CN1066352A Interference detection technique |
11/18/1992 | CA2068822A1 Tdma radio communication apparatus |
11/17/1992 | US5164985 Passive universal communicator system |
11/17/1992 | US5164959 Use with a spread spectrum communications system |
11/17/1992 | US5164830 Audio level equalization of television sound, broadcast fm and national weather service fm radio signals |
11/17/1992 | US5164689 N-way power combiner/divider |
11/17/1992 | CA1310418C Speech processor |
11/16/1992 | CA2063667A1 Mobile radio audio system |
11/14/1992 | CA2102914A1 Dual mode transmitter and receiver |
11/14/1992 | CA2102293A1 Shock isolation for selective call receivers |
11/12/1992 | WO1992020173A1 Receiver with signal classifier |
11/12/1992 | WO1992020169A1 Electronic duplex communication system |
11/12/1992 | WO1992020168A1 Digital option select system |
11/12/1992 | WO1992020167A1 A personal communications device having remote control capability |
11/12/1992 | WO1992020164A1 Transceiver with rapid mode switching capability |
11/12/1992 | WO1992020149A1 Device and method for adjusting a bandpass filter, especially a combiner filter |
11/11/1992 | EP0512606A2 Time-discrete stereo decoder |
11/11/1992 | EP0512604A2 System for interconnection of domestic video appliances |
11/11/1992 | EP0512374A1 Audio level equalization of television sound, broadcast FM and national weather service FM radio signals |
11/11/1992 | EP0512206A2 Method for selecting a mode of operation for an entertainment appliance |
11/11/1992 | EP0511989A1 Amplitude locked loop circuits. |
11/11/1992 | EP0511968A1 Interference filter for tvro receiver systems |
11/11/1992 | CN1066163A Radio receiver with nicam or dab decoder |
11/10/1992 | US5163160 Satellite transponder able to use same frequency scheme for transmitter and receiver local oscillator |
11/10/1992 | US5163159 Dual mode automatic frequency control |
11/10/1992 | US5163158 Modular communications system including a portable unit range extender and selective-call system |
11/10/1992 | US5163053 Audio signal demodulation circuit |
11/10/1992 | US5163041 Signal branching method applied to a protection switching equipment provided in a drop-insert station of a transmission system |
11/10/1992 | CA2066020A1 High speed transition signalling communication system |
11/10/1992 | CA1310067C Single-frequency time division duplex transceiver |
11/10/1992 | CA1310066C Mobile radio interface |
11/08/1992 | WO1992020178A1 Spread spectrum correlator |
11/05/1992 | DE4204879A1 Fernbedienung Remote control |
11/05/1992 | DE4114058A1 Multichannel receiver for spread-spectrum signal - provides correlation of scanning values with code simulated in code control circuit |
11/04/1992 | WO1992020207A1 Electrical interconnect apparatus |
11/04/1992 | WO1992020163A1 Transmitter filter with integral directional coupler for cellular telephones |
11/04/1992 | EP0511708A2 Method and apparatus for communication channel identification and signal restoration |
11/04/1992 | EP0511692A2 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
11/04/1992 | EP0511511A2 Microprocessor controlled electronic equipment |
11/04/1992 | EP0511341A1 A radio transceiver system. |
11/04/1992 | EP0511295A1 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions |
11/04/1992 | EP0323996B1 Oscillator network and quadrature network for radio receiver |
11/04/1992 | CN2121063U Miniature tap recorder with earphone storehouse |
11/04/1992 | CN1065964A Apparatus for encoding fishfinder image information and transmission method |
11/04/1992 | CA2083278A1 Electrical interconnect apparatus |
11/03/1992 | US5161253 Preset scanning method for radio receivers |
11/03/1992 | US5161250 Single use radio device and method for using the same |
11/03/1992 | US5161210 Coder for incorporating an auxiliary information signal in a digital audio signal, decoder for recovering such signals from the combined signal, and record carrier having such combined signal recorded thereon |
11/03/1992 | US5161198 Mobile radio audio system |
11/03/1992 | US5161185 Method and apparatus for reducing noise in a digital voltage signal |
11/03/1992 | US5161131 In line switchable audio enhancement device for CD adapter |
11/03/1992 | US5161044 Optical transmitters linearized by means of parametric feedback |
10/30/1992 | WO1992020176A1 Vocabulary memory allocation for adaptive data compression of frame-multiplexed traffic |
10/30/1992 | WO1992020165A1 Interference detection technique |
10/29/1992 | WO1992019093A1 Radio receiver, especially vehicle radio |
10/28/1992 | EP0511010A2 system for data communication on automobile |
10/28/1992 | EP0510997A2 Satellite broadcasting receiving system |
10/28/1992 | EP0510914A2 RDS receiver |
10/28/1992 | EP0510848A2 Continuous reception of program channels by a mobile receiver unit |
10/28/1992 | EP0510739A2 Local communication bus system and apparatuses for use in such a system |
10/28/1992 | EP0510116A1 Method and apparatus for providing maximum rate modulation or compression encoding and decoding |
10/28/1992 | CN2120409U Portable frequency-modulation intercom for use of mine |
10/28/1992 | CN1065765A Signal weighting system for digital receiver |
10/28/1992 | CN1065763A Intermodulation compensation in receiver |
10/28/1992 | CN1065762A Apparatus and method of dc offset correction for receiver |
10/27/1992 | US5159714 Portable audio module with headrest |
10/27/1992 | US5159711 Interference filter with high degree of selectivity for tvro receiver system |
10/27/1992 | US5159710 Zero IF receiver employing, in quadrature related signal paths, amplifiers having substantially sinh-1 transfer characteristics |
10/27/1992 | US5159709 Arrangement having tracking if filter |
10/27/1992 | US5159708 Multipath detector for an fm tuner |
10/27/1992 | US5159707 Diversity receiver |
10/27/1992 | US5159706 In a radio transceiver unit |
10/27/1992 | US5159705 Frequency synthesizer circuit |
10/27/1992 | US5159579 Apparatus for encoding fishfinder image information and transmission method |
10/27/1992 | US5159315 Communication system with environmental condition detection capability |
10/27/1992 | US5159283 Power amplifier |
10/27/1992 | US5159191 Apparatus and method for using ambient light to control electronic apparatus |
10/27/1992 | CA1309467C Paging receiver utilizing digital voice coding with improved voice reconstruction characteristics |
10/24/1992 | CA2065659A1 Continuous reception of program channels by a mobile receiver unit |
10/22/1992 | DE4112828A1 Rundfunkempfaenger, insbesondere fahrzeugempfaenger Rundfunkempfaenger, especially fahrzeugempfaenger |
10/21/1992 | EP0509850A2 Cellular mobile communication system wherein service area is reduced in response to control signal contamination |
10/21/1992 | EP0509725A2 Reducing audible noise in stereo receiving |
10/21/1992 | EP0509284A2 Rechargeable battery powered electronic equipment with the headphone connector used for connection to either headphones or a battery changer |
10/21/1992 | EP0509116A1 Pendant switch for controlling lifting devices and for crane-devices |
10/21/1992 | EP0509037A1 Automatic data restoral for modems |
10/21/1992 | EP0497769A4 System with compact spectrum |
10/21/1992 | CN2119728U Transmitter for network fm broadcast |
10/21/1992 | CN2119727U Transmitter for network fm broadcast |
10/21/1992 | CN1065565A Coding method for digital audio signal |
10/21/1992 | CN1018786B Radio receiver of receiving modulated radio frequency signal |
10/20/1992 | US5157786 Biasing networks for balanced mixers |
10/20/1992 | US5157760 Digital signal encoding with quantizing based on masking from multiple frequency bands |
10/20/1992 | US5157728 Automatic length-reducing audio delay line |
10/20/1992 | US5157689 GOLD code generating device in a spread spectrum communication device |
10/20/1992 | US5157688 Spread spectrum transmitter for degrading spread spectrum feature detectors |