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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05/10/1995 | EP0613606A4 Methods and apparatus for communicating program data signals via a remote control unit. |
05/10/1995 | EP0591260B1 Arrangement for a modulator |
05/10/1995 | CN1102522A Smooth spectrum spreading with a small spreading factor |
05/10/1995 | CN1102509A Extra antenna element |
05/10/1995 | CA2135321A1 Interface circuit between a four wire line and a two wire line |
05/09/1995 | US5414796 Method of speech signal compression |
05/09/1995 | US5414795 High efficiency digital data encoding and decoding apparatus |
05/09/1995 | US5414761 Remote control system |
05/09/1995 | US5414735 Method of processing digital signals |
05/09/1995 | US5414731 Command set and procedure for synchronization of frequency hopping control clocks |
05/09/1995 | US5414730 Asynchronous samples data demodulation system |
05/09/1995 | US5414729 Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing |
05/09/1995 | US5414728 Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels |
05/09/1995 | US5414699 Method and apparatus for receiving and decoding communication signals in a CDMA receiver using partial de-correlation |
05/09/1995 | US5414596 Portable electronic device attachment clip housing a battery |
05/09/1995 | US5414427 Device for information transmission |
05/09/1995 | US5414426 Favorite key macro command and chained macro command in a remote control |
05/09/1995 | US5414417 Automatic input/output terminal varying circuit |
05/09/1995 | US5414414 Data communication system with channel switches |
05/09/1995 | US5414383 Four quadrant multiplier circuit and a receiver including such a circuit |
05/09/1995 | CA2073347C Apparatus and method for generating quadrature signals |
05/09/1995 | CA2048647C Fractional-division synthesizer for a voice/data communications system |
05/06/1995 | CA2130874A1 Apparatus for maintaining antenna polarization in portable communication devices |
05/04/1995 | WO1995012261A1 Wideband fft channelizer |
05/04/1995 | WO1995012259A1 Method for eliminating mutliple-access interference and a mobile station |
05/04/1995 | WO1995012255A1 Staggered frequency hopping cellular radio system |
05/04/1995 | WO1995012254A1 Transmission and reception of a first and a second main signal component |
05/04/1995 | WO1995012253A1 Automatic frequency control apparatus |
05/04/1995 | WO1995012251A1 A wireless packet data communications modem and method of use therein |
05/04/1995 | WO1995012250A1 Method and apparatus for storing and presenting visual and audible information to an individual |
05/04/1995 | WO1995012245A1 Method and apparatus for controlling a peak envelope power of a power amplifier |
05/04/1995 | WO1995012224A1 Broadband aerial means |
05/04/1995 | WO1995012220A1 Mountable photovoltaic walkaround power pack |
05/04/1995 | DE4428193A1 Method for coding audio signals |
05/04/1995 | DE4330436A1 Mobile telephone |
05/04/1995 | CA2175349A1 Method and apparatus for storing and presenting visual and audible information to an individual |
05/03/1995 | EP0651585A1 Analog circuit controller using signals indicative of control voltage and type of control voltage |
05/03/1995 | EP0651545A1 Hand held radiotelephone with moveable receiver portion |
05/03/1995 | EP0651544A2 Personal communicator having a touch sensitive contol panel |
05/03/1995 | EP0651543A2 Personal communicator having improved zoom and pan functions |
05/03/1995 | EP0651522A1 Image rejection frequency converter as multi-band receiver |
05/03/1995 | EP0651521A2 Discriminating signal noise from received signals |
05/03/1995 | EP0651520A2 Control arrangements for digital radio receivers |
05/03/1995 | EP0651519A2 Interference detection and reduction |
05/03/1995 | EP0650648A1 Dynamic control of transmitting power at a transmitter and attenuation at a receiver |
05/03/1995 | EP0650646A1 Dual-pass rake receiver for a digital radio link between a fixed and a mobile radio unit |
05/03/1995 | EP0448665B1 Digital receiver for band-spread signals |
05/03/1995 | CN2196348Y Frequency modulation transceiver for fishery |
05/03/1995 | CN2196347Y Safety and radiation-proof transceiver |
05/03/1995 | CN2196346Y Display device for power of cell in radio telephone |
05/03/1995 | CN1102280A Audio video system |
05/03/1995 | CA2134907A1 End-insertion data terminal dock with positive data terminal lock and bounce prevention contact engagement bias |
05/02/1995 | US5412688 Process and circuit for detecting transmission using bi-directional differential links |
05/02/1995 | US5412687 Digital communications equipment using differential quaternary frequency shift keying |
05/02/1995 | US5412686 Method and apparatus for power estimation in a communication system |
05/02/1995 | US5412643 Duplex field bus system |
05/02/1995 | US5412392 Portable radio unit having strip antenna with parallel twin-lead feeder |
05/02/1995 | US5412377 Universal remote control program scheduling system |
05/02/1995 | US5412310 Switchable inductor for strong currents |
05/02/1995 | CA2081694C Quadrature modulation circuit |
05/02/1995 | CA2055105C Multi-channel digital receiver for global positioning system |
04/29/1995 | CA2134531A1 Control arrangements for digital radio receivers |
04/27/1995 | WO1995011498A1 A remote control device |
04/27/1995 | DE4436805A1 Device designed as a trolley for shopping or transporting other goods |
04/27/1995 | DE4340581C1 Frequency converter for extending the basic receiving range of a superheterodyne receiver |
04/27/1995 | DE4290570C2 Data transmission device |
04/26/1995 | EP0669058A4 Programmable noise bandwidth reduction by means of digital averaging. |
04/26/1995 | EP0650306A1 Message type indication for battery saving in mobile cellular receiver |
04/26/1995 | EP0650304A2 A frequency hopping control channel in a radio communication system |
04/26/1995 | EP0650281A1 Adaptive precoding and preemphasis for trellis coded modulation systems |
04/26/1995 | EP0650279A1 Power management system for a wireless network |
04/26/1995 | EP0650274A2 Radio communications systems with fault tolerant frequency hopping synchronization |
04/26/1995 | EP0650271A2 Frequency reuse technique for a high data rate satellite communication system |
04/26/1995 | EP0650270A2 High data rate satellite communication system |
04/26/1995 | EP0650262A2 Perceptual multi-channel audio coding with adaptive bit allocation |
04/26/1995 | EP0650216A1 Antenna circuit |
04/26/1995 | EP0650213A1 Array antenna and production process therefor |
04/26/1995 | EP0649588A1 Transmission and storage of multi-channel audio-signals when using a bit rate-reducing coding process. |
04/26/1995 | EP0649587A1 Improved portable power source and rf tag utilizing same |
04/26/1995 | EP0649580A1 A digital frequency conversion and tuning scheme for microwave radio receivers and transmitters |
04/26/1995 | EP0649545A1 Virtual radio interface |
04/26/1995 | EP0649544A1 Virtual data source |
04/26/1995 | CN2195830Y Simplex and duplex two purpose walkie-talkie |
04/26/1995 | CN2195829Y Magnetic antenna for radio |
04/26/1995 | CN1102023A 移动通信单元 Mobile communication unit |
04/26/1995 | CN1102022A Automobile on-board and/or portable telephone system |
04/26/1995 | CN1102020A Analog common frequency duplex communication system |
04/25/1995 | US5410751 Controlling muting, high frequency components and blending to reduce FM noise |
04/25/1995 | US5410750 Interference suppressor for a radio receiver |
04/25/1995 | US5410749 Radio communication device having a microstrip antenna with integral receiver systems |
04/25/1995 | US5410747 Dual conversion transmitter |
04/25/1995 | US5410746 Combined headgear and electronic receiving device |
04/25/1995 | US5410745 Detector and video amplifier |
04/25/1995 | US5410742 SAW electric part and frequency conversion circuit |
04/25/1995 | US5410739 Variable data message communication over voice communication channel |
04/25/1995 | US5410738 System and method for linking wireless local area networks |
04/25/1995 | US5410737 Frequency agile sharing technology (FAST) for a personal communications service system |
04/25/1995 | US5410735 Wireless signal transmission systems, methods and apparatus |
04/25/1995 | US5410731 Satellite telecommunications facility capable of covering a plurality of coverage areas |
04/25/1995 | US5410568 CDMA/TDMA spread-spectrum communications system and method |