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) |
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09/01/1992 | US5144643 Visual aid for VLF MSK signals |
09/01/1992 | US5144641 Spread spectrum communication device |
09/01/1992 | US5144640 Correlation device for spectrum spread communication |
09/01/1992 | US5144639 Spread-spectrum communication system |
09/01/1992 | US5144441 Quieting receiver during power interruption |
09/01/1992 | US5144440 Television receiver |
09/01/1992 | US5144439 Mono fm radio in a television receiver |
09/01/1992 | US5144435 Noise immunity in N signals |
09/01/1992 | US5144324 Antenna arrangement for a portable transceiver |
09/01/1992 | US5144296 Communication receiver capable of receiving a carrier signal |
09/01/1992 | US5144260 Method and apparatus for perturbation cancellation of a phase locked oscillator |
09/01/1992 | US5144157 Timing delay circuit |
09/01/1992 | CA1307045C Three terminal remotely controlled spdt antenna switch |
08/29/1992 | WO1992016054A1 Signal weighting system for digital receiver |
08/28/1992 | WO1992016056A1 Circuit for sensing pulse-like noise in am receiver |
08/26/1992 | WO1992013395A1 Receiver controller method and apparatus |
08/26/1992 | EP0500373A2 Time division duplex transmitter-receiver |
08/26/1992 | EP0500362A2 Radio receiver capable of correcting the field strength measurement of a radio signal |
08/26/1992 | EP0500159A1 Transmission system, and receiver to be used in the transmission system |
08/26/1992 | EP0500096A1 Method and apparatus for controlling coefficients of adaptive filter |
08/26/1992 | EP0500079A2 Spread spectrum demodulator |
08/26/1992 | EP0500037A2 Circuit for suppressing noise |
08/26/1992 | EP0500002A1 Laser optics |
08/26/1992 | EP0500001A1 Heating drum for vulkanizing printing blanket |
08/26/1992 | EP0500000A1 Mouse controller |
08/26/1992 | EP0499827A2 Car radio comprising a circuit for Analog/Digital conversion of the IF signal |
08/26/1992 | EP0499730A1 Radio receiver operational checking method and system |
08/26/1992 | EP0499608A1 Radio receiver, in particular for vehicles. |
08/26/1992 | EP0433308A4 Two-way radio communications system having selectable operating modes |
08/26/1992 | CN2114244U Broadcast receiver |
08/26/1992 | CA2104788A1 Hand-held data capture system with interchangeable modules and interactive control circuits |
08/25/1992 | US5142700 Protective helmet containing an integral transceiver |
08/25/1992 | US5142699 Radio receiver with clock signal controlled to improve the signal to noise ratio |
08/25/1992 | US5142695 Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength |
08/25/1992 | US5142692 Transmitting information with cut and flip spectrum |
08/25/1992 | US5142691 Frequency management system |
08/25/1992 | US5142656 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
08/25/1992 | US5142582 Speech coding and decoding system with background sound reproducing function |
08/25/1992 | US5142580 Voice band reduction apparatus and method for increasing availability of voice channels |
08/25/1992 | US5142551 Signal weighting system for digital receiver |
08/25/1992 | US5142550 Packet data communication system |
08/25/1992 | US5142534 Wireless integrated voice-data communication system |
08/25/1992 | US5142371 Fm trap for a television tuner permitting both tv and fm reception through the same tuner |
08/25/1992 | US5142370 Interrupting the video if signal path during fm radio mode in a television receiver |
08/25/1992 | US5142369 First if filter with fixed second half-if trap for use in an fm radio in a television reciever |
08/23/1992 | WO1992015164A1 Variable bandwidth cdma radio system |
08/20/1992 | WO1992014337A1 Broadcast receiver with a nicam or dab decoder |
08/20/1992 | WO1992014309A1 A communication system capable of adjusting transmit power of a subscriber unit |
08/19/1992 | EP0499440A2 A circuit arrangement for a mobile telephone |
08/19/1992 | EP0499116A1 Compact RF power generator system |
08/18/1992 | USRE34036 Data transmission using a transparent tone-in band system |
08/18/1992 | US5140705 Center-tapped coil-based tank circuit for a balanced mixer circuit |
08/18/1992 | US5140704 Pulse noise suppressing system for fm receiver |
08/18/1992 | US5140703 Modulation distortion analyzer |
08/18/1992 | US5140702 Time based signal detector for operating in a presence search mode and absence search mode during peak times and off peak times |
08/18/1992 | US5140700 FM resonant filter having AM frequency bypass |
08/18/1992 | US5140699 Detector DC offset compensator |
08/18/1992 | US5140698 Mobile telephone system with intermittent control of receiver components in standby state |
08/18/1992 | US5140610 FM video data link spectrum spreading |
08/18/1992 | US5140589 Battery saving system for interrupting power supplies at intervals variable with traffic pattern |
08/18/1992 | US5140198 Image canceling mixer circuit on an integrated circuit chip |
08/18/1992 | US5140108 Housing for electronic device |
08/18/1992 | US5139319 Exterior structure for cabinet |
08/18/1992 | CA1306555C Homodyne-type spread spectrum transmitter/receiver |
08/18/1992 | CA1306500C Control technique for an rf communication system |
08/13/1992 | DE4203436A1 Data reduced speech communication based on non-harmonic constituents - involves analogue=digital converter receiving band limited input signal with digital signal divided into twenty one band passes at specific time |
08/13/1992 | DE4130608C1 DC power supply unit for antenna amplifier - measures impedance seen at receiver and switches off power supply voltage when impedance value indicates fault or short circuit |
08/13/1992 | DE4103064A1 Radio data signal receiver esp. for car |
08/12/1992 | EP0498456A1 Predistorter and method for linearization of electronic and optical signals |
08/12/1992 | EP0498233A2 RDS broadcast receiver |
08/12/1992 | EP0498096A1 Duplex voice communication radio transmitter-receiver |
08/12/1992 | EP0497801A1 A phase locked loop for producing a reference carrier for a coherent detector. |
08/12/1992 | EP0497769A1 System with compact spectrum. |
08/12/1992 | EP0298959B1 Fm receiver with noise suppression during rayleigh faded received signals |
08/12/1992 | CN1063589A Mounting assembly for transceiver |
08/11/1992 | US5138649 Portable telephone handset with remote control |
08/11/1992 | US5138632 Correlation pulse generating circuit |
08/11/1992 | US5138609 Automatic channel switching from fallback channels to regular channels |
08/11/1992 | US5138457 Television receiver having a system for reducing interference of a first audio signal carrier to a second audio signal carrier |
08/07/1992 | WO1992014312A1 Am-fm combined stereo receiver |
08/07/1992 | WO1992014311A1 Am-fm combined stereo receiver |
08/07/1992 | WO1992014299A1 Am-fm combined stereo receiver |
08/07/1992 | CA2100447A1 Am-fm combined stereo receiver |
08/06/1992 | WO1992013414A1 Packet transmission system and method utilizing both a data bus and dedicated control lines |
08/06/1992 | WO1992013396A1 Process for transmitting digitised, block-coded audio signals using scale factors |
08/06/1992 | WO1992013394A1 A holder device for a portable radio |
08/06/1992 | WO1992013393A1 Antenna device |
08/06/1992 | WO1992013392A1 Conserving power in hand held mobile telephones during a receiving mode of operation |
08/06/1992 | DE4103061A1 Radio data signal receiver esp. for car |
08/06/1992 | DE4102834A1 Balancing arrangement for min. cross=talk in stereo decoder - synchronises phase of local oscillator using pilot tone filtered from auxiliary carrier of stereo multiplex signal |
08/05/1992 | EP0497665A1 Method and device for reducing the effects of parasitic noise on the detection of a target, using a system with multiple elementary sensors |
08/05/1992 | EP0497424A2 Broadcast receiver including a NICAM or DAB decoder |
08/05/1992 | EP0497413A1 Subband coding system and a transmitter comprising the coding system |
08/05/1992 | EP0497250A1 Method for detecting an interfering signal for a digital data demodulator and apparatus for the implementation of such a method |
08/05/1992 | EP0497116A2 RDS broadcast receiver |
08/05/1992 | EP0497115A2 RDS broadcast receiver |
08/05/1992 | EP0497073A2 Wide-band domestic reconfigurable multipoint cable network for simultaneous and/or alternative distribution of several types of signals |
08/05/1992 | EP0496986A2 Packet data communication system |
08/05/1992 | EP0496797A1 In-wire selective cancellation system |
08/05/1992 | EP0472621A4 Method and apparatus for reducing intermodulation distortion |