| 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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| 05/26/1994 | WO1994011978A1 Spread-spectrum using ten-megahertz channelization |
| 05/26/1994 | WO1994011958A1 A radio module included in a primary radio station, and a radio structure containing such modules |
| 05/26/1994 | DE4310602C1 Fixing clip for portable communications device - is spring-biased into stowed position fitting within recess in housing of communications device, e.g. telephone handset |
| 05/26/1994 | CA2126973A1 A radio module included in a primary radio station, and a radio structure containing such modules |
| 05/25/1994 | EP0598624A1 Detection of multiple articles |
| 05/25/1994 | EP0598533A1 Broadband interference reduction |
| 05/25/1994 | EP0598392A1 Digital audio signal transforming method and apparatus |
| 05/25/1994 | EP0598317A2 Broadcast receiver with automatic compression control |
| 05/25/1994 | EP0598107A1 Power saving remote keyless entry |
| 05/25/1994 | EP0597905A1 Intermodulation controller for radio receiver. |
| 05/25/1994 | CN1024735C Circuit for preventing interference of TV channel 6 broadcast |
| 05/24/1994 | US5315639 Hands-free intercom system |
| 05/24/1994 | US5315616 Correlator for DSSS communications |
| 05/24/1994 | US5315615 DSSS communications correlation |
| 05/24/1994 | US5315581 Hit-less protection switching method and apparatus for ATM transmission lines |
| 05/24/1994 | US5315532 Method and device for real-time signal separation |
| 05/24/1994 | US5315392 Apparatus for display and selection of available television channels |
| 05/19/1994 | DE4237394A1 Mains power unit esp. for cordless telecommunication equipment - supplies battery-recharging DC from bridge rectifier via pre-regulating series thyristor circuit and output voltage stabiliser |
| 05/18/1994 | EP0597653A2 Radio frequency circuit for a time division multiple access system |
| 05/18/1994 | EP0597649A2 High efficiency coding method and apparatus |
| 05/18/1994 | EP0597633A1 Burst mode digital data receiver |
| 05/18/1994 | EP0597632A1 Packet mode digital data receiver |
| 05/18/1994 | EP0597534A2 Radio transceiver |
| 05/18/1994 | EP0597525A1 Device for detecting pulsatory interference signals |
| 05/18/1994 | EP0597492A1 Radio data system receiver |
| 05/18/1994 | EP0597317A1 Channel impulse response estimator for a viterbi equalizer |
| 05/18/1994 | EP0597255A1 Receiver for digital audio broadcast with digital signal processing |
| 05/18/1994 | EP0418270B1 Fm radio reception unit |
| 05/18/1994 | CN2165578Y Paging machine with voice circuit arrangement |
| 05/18/1994 | CN2165574Y Combined protective cover for household electric appliance remote-controller |
| 05/17/1994 | US5313663 Ear mounted RF receiver |
| 05/17/1994 | US5313662 Split-ring resonator bandpass filter with adjustable zero |
| 05/17/1994 | US5313658 Transmission power control system in a radio apparatus |
| 05/17/1994 | US5313657 Receiver capable of reliably detecting a failure |
| 05/17/1994 | US5313524 Self-contained active sound reproducer with switchable control unit master/slave |
| 05/17/1994 | US5313497 Method of detecting a disturbing signal for a digital data demodulator, and apparatus implementing such a method |
| 05/17/1994 | US5313491 Acquisition method for DSSS communications |
| 05/17/1994 | US5313490 Acquisition apparatus for DSSS communications |
| 05/17/1994 | US5313457 Code position modulation system and method for multiple user satellite communications |
| 05/17/1994 | US5313411 Adaptive receiver capable of achieving both of matched filtering function and carrier recovery function |
| 05/17/1994 | US5313371 Shielding apparatus for non-conductive electronic circuit packages |
| 05/17/1994 | US5313211 Portable data processing device capable of transmitting processed data on a radio by reflection of unmodulated carrier signal externally applied |
| 05/17/1994 | US5313169 Method of realigning the local oscillators of a receiver and device for implementing the method |
| 05/17/1994 | US5313053 Laser scanner module having integral interfacing with hand-held data capture terminal |
| 05/17/1994 | CA2034088C Digitally frequency-locking a radio transceiver to the received signal |
| 05/17/1994 | CA1329653C Programmable operating-parameter control apparatus for a television receiver |
| 05/14/1994 | CA2106439A1 Burst mode digital data receiver |
| 05/11/1994 | WO1994010818A1 Sound amplification system |
| 05/11/1994 | WO1994010779A1 Multi-mode signal processing |
| 05/11/1994 | WO1994010774A1 Radio frequency communication network having adaptive communication parameters |
| 05/11/1994 | WO1994010758A1 Process for transmitting and/or storing digital signals from several channels |
| 05/11/1994 | WO1994010757A1 Homodyne receiver and process for direct conversion |
| 05/11/1994 | WO1994010756A1 Homodyne receiver and process for correcting the converted receiving signal |
| 05/11/1994 | WO1994010709A1 Battery compartment door and latch having longitudinal snaps |
| 05/11/1994 | EP0596699A2 Spread-spectrum frequency-hopping radiotelephone system |
| 05/11/1994 | EP0596663A2 A high efficiency encoding device and a noise spectrum modifying device and method |
| 05/11/1994 | EP0596563A1 Filter device to carry out a least squares method using rotation matrixes |
| 05/11/1994 | EP0596521A2 Multi-interrogator, datacom, and transponder arrangement |
| 05/11/1994 | EP0595976A1 Am receiver |
| 05/11/1994 | EP0595856A1 Adaptive graphic equalizer and radio using same |
| 05/11/1994 | EP0417147B1 Fm radio receptor unit |
| 05/11/1994 | DE4237824A1 Power supply circuit for antenna amplifier esp. in motor vehicle - provides for direct current feed through RF-by=passed diode as alternative to separate connection from battery |
| 05/11/1994 | DE4237739A1 Transmission circuit for DC voltage from HF receiver to aerial amplifier - has coupling circuit for DC voltage feeding into aerial cable end, facing HF receiver |
| 05/11/1994 | DE4237486A1 Short-range radio device for detection of stolen vehicle - broadcasts modulated signal indicating unauthorised driving, for reception and demodulation by receiver operated by law enforcement agency |
| 05/11/1994 | CN2164614Y 高频发射机 High-frequency transmitter |
| 05/11/1994 | CN1086614A Rollerball control arrangement for a timepiece adapted to receive radio broadcast messages |
| 05/11/1994 | CA2148381A1 Radio frequency communication network having adaptive communication parameters |
| 05/10/1994 | US5311561 Method and apparatus for compressing a digital input signal with block floating applied to blocks corresponding to fractions of a critical band or to multiple critical bands |
| 05/10/1994 | US5311551 Digital signal hardware protection switching |
| 05/10/1994 | US5311549 Method and system for processing the pre-echoes of an audio-digital signal coded by frequency transformation |
| 05/10/1994 | US5311544 Receiver of a direct sequence spread spectrum system |
| 05/10/1994 | US5311543 Television transmission system using two stages of spead-spectrum processing |
| 05/10/1994 | US5311542 Spread spectrum communication system |
| 05/10/1994 | US5311541 Frequency agile radio |
| 05/10/1994 | US5311170 Method and system for making bipolar switching to protection channel |
| 05/10/1994 | US5311155 Method and apparatus for imparting a linear frequency response to a signal |
| 05/10/1994 | US5311149 Integrated phase locked loop local oscillator |
| 05/10/1994 | US5311087 Noise removing circuit |
| 05/10/1994 | CA2043413C Dual mode power amplifier for radiotelephone |
| 05/05/1994 | DE4290581C2 Signalwichtungssystem für einen Digitalempfänger Signal weighting system for a digital receiver |
| 05/05/1994 | DE4238543C1 Correcting phase and amplitude error for direct conversion receiver - achieving amplitude correction of in=phase or quadrature signal and amplitude correction of obtained sum or difference value |
| 05/05/1994 | DE4236989A1 Verfahren zur Übertragung und/oder Speicherung digitaler Signale mehrerer Kanäle Method for the transmission and / or storage of digital signals of multiple channels |
| 05/04/1994 | EP0595781A2 Multi-mode signal processing |
| 05/04/1994 | EP0595457A1 Noise cancellation apparatus |
| 05/04/1994 | EP0595406A1 Radio device with signal compression |
| 05/04/1994 | EP0595402A1 Radio receiver for a motor vehicle, having a removable component containing essential functions of the receiver |
| 05/04/1994 | EP0595278A1 Homodyne receiver and method for correcting the converted signals |
| 05/04/1994 | EP0595277A1 Homodyne receiver and method of direct conversion |
| 05/04/1994 | EP0594894A1 DC offset correction for direct-conversion TDMA receiver |
| 05/04/1994 | CN2164157Y Movable telephone power box using nickel-hydrogen cell |
| 05/04/1994 | CN2164156Y Traffic induced receiver |
| 05/04/1994 | CN2164155Y Mid-wave passive antenna amplifier |
| 05/04/1994 | CN1086362A Data transfer method and apparatus having dual frequency operation |
| 05/04/1994 | CN1086325A 计算机卡式数据接收机 Computer card data receiver |
| 05/04/1994 | CA2102383A1 Spread-spectrum, frequency-hopping radiotelephone system |
| 05/03/1994 | US5309482 Receiver having an adjustable matched filter |
| 05/03/1994 | US5309479 Low Cost Ku band transmitter |
| 05/03/1994 | US5309478 Method and apparatus for hybrid analog/digital signal processing |
| 05/03/1994 | US5309474 Communication system |
| 05/03/1994 | US5309429 Transmitter-receiver |