| 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) |
|---|
| 12/01/1993 | EP0572189A1 Battery charging equipment for a cordless telephone |
| 12/01/1993 | EP0572175A1 An improved transformer-less hybrid circuit |
| 12/01/1993 | EP0571635A1 Device for correcting frequency characteristic of sound field |
| 12/01/1993 | EP0536334A4 System and method for generating signal waveforms in a cdma cellular telephone system |
| 12/01/1993 | CN1079089A Communications system with extended channels |
| 12/01/1993 | CN1079088A Residential facility control system |
| 12/01/1993 | CN1079086A Power savwing operation method of caller and caller operated by power saving method |
| 12/01/1993 | CN1022966C Method and device for fast phase shift adjusting of linear transmitter |
| 11/30/1993 | US5267323 Voice-operated remote control system |
| 11/30/1993 | US5267297 Base station for a radio communication system |
| 11/30/1993 | US5267272 Receiver automatic gain control (AGC) |
| 11/30/1993 | US5267271 Signal analysis technique for determining a subject of binary sequences most likely to have been transmitted in a multi-node communication network |
| 11/30/1993 | US5267260 Spread spectrum receiver using the code division multiple access mode |
| 11/30/1993 | US5267234 Radio transceiver with duplex and notch filter |
| 11/30/1993 | US5267233 Radio set for an FDM-TDM-radio transmission set |
| 11/30/1993 | US5267041 Ghost cancelling circuit |
| 11/30/1993 | US5266945 Paging system with energy efficient station location |
| 11/30/1993 | US5266926 Signal transmission and tag power consumption measurement circuit for an inductive reader |
| 11/30/1993 | CA1324815C Display for radio receiver having station format selection capability |
| 11/25/1993 | WO1993023963A1 Method and circuit for selecting tuning of a radio receiver |
| 11/25/1993 | WO1993023957A1 Apparatus and methods for automatic control and monitoring of the operation of consumer electronic products |
| 11/25/1993 | WO1993023951A1 Transmission device for transmitting a wanted signal modulated on a carrier |
| 11/25/1993 | WO1993023928A1 Power line coupler modem device for communication over electrical lines |
| 11/25/1993 | CA2112809A1 Method and circuit for selecting tuning of a radio receiver |
| 11/24/1993 | EP0571079A1 Discriminating and suppressing incoming signal noise |
| 11/24/1993 | EP0571078A1 Apparatus and method for attenuating received noise signals |
| 11/24/1993 | EP0570508A1 Am-fm combined stereo receiver |
| 11/24/1993 | EP0570480A1 Am-fm combined stereo receiver |
| 11/24/1993 | CN1078834A Switchable inductor for strong currents |
| 11/24/1993 | CN1078832A Apparatus and method for data compression using signal-weighted quantizing bit allocation |
| 11/23/1993 | US5265275 Selective call receiver having moveable battery contacts |
| 11/23/1993 | US5265274 Combined keypad and speaker porting |
| 11/23/1993 | US5265273 EMI shield for a display |
| 11/23/1993 | US5265272 Modular wrist band antenna |
| 11/23/1993 | US5265271 Low battery detector |
| 11/23/1993 | US5265270 Method and apparatus for providing power conservation in a communication system |
| 11/23/1993 | US5265269 Intermediate frequency independent star mixer |
| 11/23/1993 | US5265267 Integrated circuit including a surface acoustic wave transformer and a balanced mixer |
| 11/23/1993 | US5265266 Resistive planar star double-balanced mixer |
| 11/23/1993 | US5265265 Wristwatch radio communication device having an improved noise shielding structure |
| 11/23/1993 | US5265264 Convertible half-to-full duplex radio operation selected by battery |
| 11/23/1993 | US5265158 Construction of a stand alone portable telephone unit |
| 11/23/1993 | US5265126 Voice recording and reproducing apparatus having perpendicular carrier modulation |
| 11/23/1993 | US5265121 For inference detecting a received signal in noise |
| 11/23/1993 | US5265120 Binary phase shift keying modulation system and/or frequency multiplier |
| 11/23/1993 | US5264846 Coding apparatus for digital signal |
| 11/23/1993 | CA1324652C Method and apparatus for jamming cable television channels |
| 11/21/1993 | WO1993011613A1 Phase-locked-loop circuit for radio transceiver |
| 11/18/1993 | EP0570325A1 Portable communication terminal |
| 11/18/1993 | EP0570273A1 Method for despreading of a wideband signal at reception |
| 11/18/1993 | EP0570256A1 Switchable high current induction and antenna tuning circuit using the same |
| 11/18/1993 | EP0570184A1 A filter used as transmit-receive switch |
| 11/18/1993 | EP0570166A1 Interference detection and cancellation system and method |
| 11/18/1993 | EP0570145A1 A control circuit |
| 11/18/1993 | EP0570131A1 Compression encoding and decoding of digital audio signals |
| 11/18/1993 | EP0569512A1 Packet transmission system and method utilizing both a data bus and dedicated control lines |
| 11/18/1993 | EP0569504A1 Intermodulation compensation in a receiver |
| 11/18/1993 | EP0569486A1 A communication system capable of adjusting transmit power of a subscriber unit |
| 11/18/1993 | EP0553289A4 Digital audio broadcasting system |
| 11/17/1993 | CN2146818Y Combined filter with waterproof structure |
| 11/16/1993 | US5263199 Vehicle accessory having integrally contained radio receiver and recording means |
| 11/16/1993 | US5263198 Resonant loop resistive FET mixer |
| 11/16/1993 | US5263197 Dual port oscillator for two-stage direct conversion receiver |
| 11/16/1993 | US5263196 Method and apparatus for compensation of imbalance in zero-if downconverters |
| 11/16/1993 | US5263195 Superheterodyne radio receiver with digital automatic frequency control for a local oscillator |
| 11/16/1993 | US5263194 Zero if radio receiver for intermittent operation |
| 11/16/1993 | US5263193 Selfmixing heterodyne system |
| 11/16/1993 | US5263190 Vehicular radio receiver having muting circuitry for suppressing noises caused by receiver data pulses |
| 11/16/1993 | US5263186 Control loop for reducing the time of repsonse of a tuner-AGC of a superheterodyne receiver and relative leading edge differentiating circuit used in the control loop |
| 11/16/1993 | US5263184 Noise reducing circuit for a receiver using a fuzzy controller |
| 11/16/1993 | US5263183 Radio antenna tuning circuit |
| 11/16/1993 | US5263182 Low-noise block converter for a satellite broadcasting system |
| 11/16/1993 | US5263181 Remote transmitter for triggering a voice-operated radio |
| 11/16/1993 | US5263178 Procedure for arranging switch-type control in a radio telephone |
| 11/16/1993 | US5263091 Intelligent automatic threshold circuit |
| 11/16/1993 | US5263088 Adaptive bit assignment transform coding according to power distribution of transform coefficients |
| 11/16/1993 | US5263079 Dual mode cellular radio communication apparatus having an echo canceller employed in both analog and digital modes |
| 11/16/1993 | US5263055 Apparatus and method for reducing harmonic interference generated by a clock signal |
| 11/16/1993 | US5263050 Adaptive threshold in a spread spectrum communications system |
| 11/16/1993 | US5263048 Narrow band interference frequency excision method and means |
| 11/16/1993 | US5263047 Multiple cavity tuning of a transmitter output in a communication system |
| 11/16/1993 | US5263046 Spread-spectrum chirp communication with sharply defined bandwidth |
| 11/16/1993 | US5263045 Spread spectrum conference call system and method |
| 11/16/1993 | US5262900 Laser optics device |
| 11/16/1993 | US5262858 Method of converting the clock rate of a digitized signal |
| 11/16/1993 | US5262741 Attenuator for high-frequency signal |
| 11/16/1993 | CA2004236C Heterodyne stage having precise closed-loop control of the amplitude of the injection signal thereof |
| 11/15/1993 | CA2096150A1 Filter |
| 11/13/1993 | CA2095792A1 Switchable inductor for strong currents |
| 11/13/1993 | CA2094842A1 Intrusion detection and cancellation system and method |
| 11/11/1993 | WO1993022850A1 A method of increasing interference diversity in an fdma/tdma-based cellular system and cellular system |
| 11/11/1993 | WO1993022845A1 Frequency agile sharing technology (fast) for a personal communications service system |
| 11/11/1993 | WO1993022806A1 A folded lens antenna |
| 11/11/1993 | WO1993022803A1 Antenna coupling apparatus for a cordless telephone |
| 11/11/1993 | WO1993022164A2 Security systems |
| 11/11/1993 | CA2111688A1 Frequency agile sharing technology (fast) for a personal communications service system |
| 11/10/1993 | EP0569176A2 Technique for cancelling signal dispersion in communications systems |
| 11/10/1993 | EP0569165A2 Power supply circuit |
| 11/10/1993 | EP0569007A2 Surface acoustic wave device, and demodulating apparatus and communication system using the surface acoustic wave device |
| 11/10/1993 | EP0568942A1 Transmit-receive switch for TDMA-transceivers |