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