| 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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| 06/22/1993 | US5222254 Receiver including means for acquisition and comparison of identification data of two transmission channels |
| 06/22/1993 | US5222253 Transient suppression circuit for a time domain duplex transceiver |
| 06/22/1993 | US5222252 Stereo radio receiver multipath disturbance detection circuit |
| 06/22/1993 | US5222250 Single sideband radio signal processing system |
| 06/22/1993 | US5222247 Method for maximizing channel selection in a communication system |
| 06/22/1993 | US5222189 Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio |
| 06/22/1993 | US5222144 Digital quadrature radio receiver with two-step processing |
| 06/22/1993 | US5222106 Interference detection and reduction |
| 06/22/1993 | US5222104 Gain control circuit for radio transmitter |
| 06/22/1993 | US5222100 Range based acquisition system |
| 06/22/1993 | US5222099 Spread spectrum signal receiving apparatus |
| 06/22/1993 | US5222098 Spectrum spread communication system |
| 06/22/1993 | US5222079 Adaptive information signal receiver |
| 06/22/1993 | US5222078 Data signal compensation apparatus for use in a receiver |
| 06/22/1993 | US5222075 Transmitted code clock code-matching synchronization for spread-spectrum communication systems |
| 06/22/1993 | US5222007 Automatic ejection system of a car stereo having a detachable grille |
| 06/22/1993 | US5221911 Receiver having pll frequency synthesizer with rc loop filter |
| 06/22/1993 | CA2019000C Cellular telephone responsive to service availability for operating on different cellular telephone systems |
| 06/22/1993 | CA2016334C Dual-bandwidth cellular telephone |
| 06/22/1993 | CA1319407C Power consumption reducing device for cyclic operating equipment such as a time-division switcher |
| 06/21/1993 | WO1993013630A1 Distribution system for communication services |
| 06/21/1993 | CA2103795A1 Distribution system for communication services |
| 06/21/1993 | CA2085293A1 Circuit for increasing the dynamic range in a wideband stealth analog signal transmission channel and its application to a multi stealth signal transmission device |
| 06/17/1993 | DE4140741A1 Duplex diversity operation of vehicular mobile radio installation - comparing buffered radiotelephone reception quality signals for actuation of transistor-switched antenna selection relay |
| 06/16/1993 | EP0546775A1 Television receiver |
| 06/16/1993 | EP0546723A1 Radio frequency receiver |
| 06/16/1993 | EP0546693A1 Control circuit and method for transmission output |
| 06/16/1993 | EP0546088A1 Frequency modulated synthesizer using low frequency offset mixed vco |
| 06/16/1993 | EP0545992A1 Transient suppression circuit for a time domain duplex transceiver |
| 06/16/1993 | EP0340301B1 Digital adaptive transform coding process |
| 06/16/1993 | EP0235257B1 Multiplexed digital packet telephone communication method |
| 06/16/1993 | CN2136556Y Electronic noise suppression switch |
| 06/16/1993 | CN2136549Y Electronic through-the-wall remote-controlled voltage regulator |
| 06/15/1993 | US5220688 Frequency translating circuit with multiple stages using common local oscillator |
| 06/15/1993 | US5220687 Radio receiver having switch for switching between a wide filter and a narrow filter |
| 06/15/1993 | US5220686 Tunable resonance amplifier |
| 06/15/1993 | US5220684 Channel selecting circuit |
| 06/15/1993 | US5220683 Ultra-widebandwidth compressive receiver |
| 06/15/1993 | US5220682 Automatic broadcast wave tuning device for rds receiver |
| 06/15/1993 | US5220681 Electronic signal decoder display/enunciator apparatus for electronic signal receivers |
| 06/15/1993 | US5220679 Transmission-reception diplexer having a diode rf switch |
| 06/15/1993 | US5220607 Digital switching signal in stereo decoders and circuit array for generation thereof |
| 06/15/1993 | US5220580 Remote-control system with a spread-spectrum transmission link |
| 06/15/1993 | US5220557 Multiple use digital transmitter/transceiver with time multiplexing |
| 06/15/1993 | US5220319 Adaptable key holder for a remote control transmitter |
| 06/10/1993 | WO1993011612A1 Radio frequency device for marking munition impact point |
| 06/09/1993 | EP0545915A2 Device for transmitting data words representing a digitized analog signal |
| 06/09/1993 | EP0545633A1 Improvements in battery charging |
| 06/09/1993 | EP0545461A2 Clock recovery circuit |
| 06/09/1993 | EP0545342A1 Superheterodyne receiver |
| 06/09/1993 | EP0545125A1 Device for receiving FM-signals |
| 06/09/1993 | EP0545088A2 Radio telephone system with data communication capability and radio communication method |
| 06/09/1993 | EP0545017A2 Data compression method and apparatus in which quantizing bits are allocated to a block in a present frame in response to the block in a past frame |
| 06/09/1993 | EP0540664A4 Sawc phase-detection method and apparatus |
| 06/09/1993 | EP0515610A4 Adaptive power control for a spread spectrum transmitter |
| 06/09/1993 | EP0511295A4 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions |
| 06/09/1993 | CN2135880Y Head holding radio |
| 06/09/1993 | CN1073061A Mobile communications device registration method |
| 06/08/1993 | US5218641 Wireless receiver |
| 06/08/1993 | US5218620 Spread spectrum communication device |
| 06/08/1993 | US5218619 CDMA subtractive demodulation |
| 06/08/1993 | US5218343 Portable field-programmable detection microchip |
| 06/08/1993 | US5218300 Method and equipment for noise-reduction when detecting a target by means of a system of several detector elements |
| 06/08/1993 | US5218285 Electronic device with dual purpose regulator |
| 06/08/1993 | US5218187 Hand-held data capture system with interchangeable modules |
| 06/08/1993 | US5217985 Renal-selective biphenylalkyl 1h-substituted-1,2,4-triazole angiotensin ii antagonists for treatment of hypertension |
| 06/08/1993 | US5217367 Heating drum for receiving a printing blanket to be vulcanized |
| 06/08/1993 | CA1318940C Holding structure for a paging receiver having extra functions |
| 06/05/1993 | CA2056903A1 Radio transceiver |
| 06/03/1993 | DE4134789A1 Signals processing of effective narrow band signal and noise - having demodulator formed by sampling with square wave phased pulses in two separate circuit paths |
| 06/02/1993 | EP0544523A2 Antenna operating mechanism for a portable radio communication apparatus |
| 06/02/1993 | EP0544389A1 Wireless microphone device |
| 06/02/1993 | EP0544356A2 Device for performing a one-dimensional forward transformation, and inverse transformation |
| 06/02/1993 | EP0544337A1 Packet data communications |
| 06/02/1993 | EP0544313A2 Cross polarization interference canceller |
| 06/02/1993 | EP0544101A1 Method and apparatus for the transmission of speech signals |
| 06/02/1993 | CN2135217Y Intercom-protecting cover |
| 06/01/1993 | US5216719 Subband coding method and encoding/decoding system |
| 06/01/1993 | US5216697 Signal quality detector circuit |
| 06/01/1993 | US5216696 Programmable noise bandwidth reduction by means of digital averaging |
| 06/01/1993 | US5216693 Spread spectrum communications system |
| 06/01/1993 | US5216691 Digital receiver for spread-spectrum signals |
| 06/01/1993 | US5216378 Switch adaptable radio frequency amplifier |
| 05/30/1993 | CA2083813A1 Battery charging |
| 05/27/1993 | WO1993010642A1 Methods and apparatus for communicating program data signals via a remote control unit |
| 05/27/1993 | WO1993010609A1 Adaptive power control for a spread spectrum communications system and method |
| 05/27/1993 | CA2123503A1 Methods and apparatus for communicating program data signals via a remote control unit |
| 05/26/1993 | EP0543645A1 Embedded antenna for communication devices |
| 05/26/1993 | EP0543396A1 Frequency modulation receiving apparatus having two intermediate-frequency band pass filters |
| 05/26/1993 | EP0542922A1 Reciprocal mode saw correlator method and apparatus |
| 05/26/1993 | EP0542894A1 Novel spread spectrum codec apparatus and method |
| 05/26/1993 | EP0542878A1 Universal remote control including quick touch function |
| 05/26/1993 | CN2134754Y Multifunction engineering tripod |
| 05/26/1993 | CN1072545A Correlation processing receiver |
| 05/26/1993 | CA2099664A1 Phase-locked-loop circuit for radio transceiver |
| 05/25/1993 | US5214796 Image separation mixer |
| 05/25/1993 | US5214793 Electronic billboard and vehicle traffic control communication system |
| 05/25/1993 | US5214788 Process and device for information transmission between radioelectric transceivers of the same network operating in frequency hopping |
| 05/25/1993 | US5214742 Method for transmitting a signal |
| 05/25/1993 | US5214741 Variable bit rate coding system |