| 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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| 08/10/1994 | CN2174011Y Internal equalizer adjusting plate |
| 08/10/1994 | CN2174010Y Multifunctional high-fidelity dual track vacuum-tube sound signal transmitter |
| 08/10/1994 | CN1090692A Local comunication system with plural data channels |
| 08/10/1994 | CN1090690A Paging receiver and radio frequency channel searching method for the same |
| 08/10/1994 | CN1090689A Radio communication apparatus capable of isolating a receiver from a transmitter during a reception operation |
| 08/09/1994 | US5337342 Emergency call system |
| 08/09/1994 | US5337332 Training detection apparatus |
| 08/09/1994 | US5337073 Portable radio equipment with a display back-lighting function |
| 08/09/1994 | US5337061 High performance antenna for hand-held and portable equipment |
| 08/09/1994 | US5337006 Output level control circuit for use in RF transmitter |
| 08/09/1994 | US5337005 Integrated frequency synthesizer circuit for transmit-and-receiver operation |
| 08/09/1994 | US5336896 Cellular telephone users protective device |
| 08/09/1994 | CA2115118A1 Method of transmitting a data stream, transmitter and receiver |
| 08/04/1994 | WO1994017627A1 Television system module with remote control code determination |
| 08/04/1994 | WO1994017602A1 Compound pn code tracking system |
| 08/04/1994 | WO1994017600A1 Method for removing interference wave, receiver and communication system which use the method |
| 08/04/1994 | WO1994017599A1 Cartesian multicarrier feedback |
| 08/04/1994 | WO1994017598A1 Communication apparatus |
| 08/04/1994 | WO1994017596A1 Method and system for performing transmission of digital data by coding bit information into the shape of a pulse and decoding the bit information from the shape of the pulse |
| 08/04/1994 | WO1994017565A1 Antenna assembly for radio circuit and method therefor |
| 08/04/1994 | WO1994017502A1 Method and apparatus for establishing data communications between power-conserving devices |
| 08/04/1994 | DE4401615A1 Radiofrequenzvorrichtung Radio frequency device |
| 08/04/1994 | DE4302636A1 VTR with low power consumption |
| 08/04/1994 | CA2154082A1 Communications system |
| 08/04/1994 | CA2132089A1 Cartesian multicarrier feedback |
| 08/03/1994 | EP0608899A2 Portable telephone and additional device for the same |
| 08/03/1994 | EP0608715A2 Wireless-telecommunication device for vehicles |
| 08/03/1994 | EP0608624A2 Hierarchical control system for AV equipment and method of setting up such a system |
| 08/03/1994 | EP0608281A1 Process for reducing frequency interlacing during acoustic or optical signal transmission and/or recording. |
| 08/03/1994 | EP0608251A1 Electrical connector module for multi media, broadband and baseband signal cables. |
| 08/03/1994 | EP0248609B1 Speech processor |
| 08/03/1994 | CN2173481Y Wireless remoting receiver for material distributing of cement vertical kiln |
| 08/03/1994 | CN1090454A Set top terminal for cable television delivery systems |
| 08/03/1994 | CN1090453A Advanced set top terminal for cable television delivery systems |
| 08/03/1994 | CN1090452A Network controller for cable television delivery systems |
| 08/03/1994 | CN1090451A Digital cable headend for cable television delivery system |
| 08/03/1994 | CN1090447A Data display radio pager |
| 08/02/1994 | US5335369 Automatic power control circuit for use with a radio telecommunication apparatus |
| 08/02/1994 | US5335368 Portable radio apparatus having variable impedance matching circuit between antenna and radio circuit |
| 08/02/1994 | US5335367 Antenna retracting structure of portable radio |
| 08/02/1994 | US5335366 Radiation shielding apparatus for a radio transmitting device |
| 08/02/1994 | US5335365 Frequency synthesizer with VCO output control |
| 08/02/1994 | US5335364 Circuit arrangement for automatic frequency control in a radio telephone |
| 08/02/1994 | US5335363 Signal interference reduction device and method |
| 08/02/1994 | US5335354 Demodulation circuit having automatic frequency control function |
| 08/02/1994 | US5335263 Power supply switching circuit for a compact portable telephone set |
| 08/02/1994 | US5335249 Method and apparatus for spread spectrum communications |
| 08/02/1994 | US5335247 Adaptive data rate packet communications system |
| 08/02/1994 | US5335246 Pager with reverse paging facility |
| 08/02/1994 | US5334979 Power controller |
| 08/02/1994 | US5333827 Mounting assembly for suspending an electrical appliance from an elevated cabinet |
| 08/02/1994 | CA2027364C Varying bandwidth digital signal detector |
| 08/02/1994 | CA2010478C Spread-spectrum identification signal for communications systems |
| 08/02/1994 | CA2006943C Radio transceiver apparatus with booster |
| 07/28/1994 | DE4302836A1 Electronic circuit for processing passive IR sensor signals, esp. for monitoring motion in room |
| 07/28/1994 | DE3736105C1 Extracting periodic temporally-equidistant amplitude-sampled code signal |
| 07/27/1994 | EP0608086A2 Battery charge indicator for transceiver |
| 07/27/1994 | EP0608048A2 Method and apparatus for selecting signal lines for their connection to a plurality of audio-visual devices |
| 07/27/1994 | EP0608024A1 Transmissionsystem with clock recovery |
| 07/27/1994 | EP0607919A2 Portable telephone equipment |
| 07/27/1994 | EP0607214A1 Communication device having a speaker and microphone |
| 07/27/1994 | EP0548221A4 Radio telephone system supporting busy and out-of-range functions |
| 07/27/1994 | CN2172931Y Wire electronic intercom |
| 07/27/1994 | CN2172930Y Radio integrated with clothes |
| 07/26/1994 | US5333195 Telephone network speech signal enhancement |
| 07/26/1994 | US5333194 Autoequalizing bidirectional-to-unidirectional hybrid network |
| 07/26/1994 | US5333177 Universal connection for cellular telephone interface |
| 07/26/1994 | US5333153 Signal quality detection method and apparatus for optimum audio muting |
| 07/26/1994 | US5332977 Power supply circuit for an active antenna of a vehicle radio |
| 07/26/1994 | CA2017733C Wireless transmitting-receiving apparatus for a bicycle |
| 07/25/1994 | EP0636242A4 Apparatus and method for voice band reduction. |
| 07/21/1994 | WO1994016523A1 Universal remote controller using compressed codes |
| 07/21/1994 | WO1994016503A1 Apparatus and methods for displaying text in conjunction with recorded audio programs |
| 07/21/1994 | WO1994016497A1 Device and method for tuning a combiner filter |
| 07/21/1994 | WO1994016496A1 Device and method for tuning a band-pass filter |
| 07/21/1994 | WO1994016495A1 Method and arrangement for tuning a combiner filter |
| 07/21/1994 | CA2113766A1 Transmission system comprising timing recovery |
| 07/20/1994 | EP0607037A2 Radio paging receiver |
| 07/20/1994 | EP0606996A2 Transmitter-receiver |
| 07/20/1994 | EP0606916A1 Data transmission system using error correction without expansion of bandwidth |
| 07/20/1994 | EP0606854A2 Radio transceiver |
| 07/20/1994 | EP0606754A1 Method and apparatus of communication |
| 07/20/1994 | EP0606546A2 Code-division multiple-access demodulator with interference cancellation |
| 07/20/1994 | EP0606396A1 A radio frequency local area network |
| 07/20/1994 | EP0606231A1 Combination liquid crystal display driver and varactor voltage power supply |
| 07/20/1994 | EP0261112B1 Method and apparatus for controlling a tdm communication device |
| 07/20/1994 | CN2172547Y Phonetic wireless calling device |
| 07/20/1994 | CN1025527C Wire broadcasting method and its system |
| 07/19/1994 | US5331638 Gain control in a TDMA radio-telephone system |
| 07/19/1994 | US5331580 Data capture system with communicating and recharging docking apparatus, and modular printer and hand-held data terminal means cooperable therewith |
| 07/19/1994 | US5331450 Infrared transmitter and receiver and method |
| 07/19/1994 | US5331353 Device for limiting the amount of time an electrical appliance such as a television may be used |
| 07/19/1994 | US5331136 Hand-held data capture system with interchangeable modules |
| 07/19/1994 | US5331123 Switch operative responsive to positioning of a card member |
| 07/19/1994 | CA1330840C Integral sound system having interchangeable modules with separate microcontrollers |
| 07/14/1994 | DE4344789A1 Signal detection circuit for broadcast road traffic information |
| 07/13/1994 | EP0605954A2 Transmitter/receiver arrangements |
| 07/13/1994 | EP0605928A2 A consumer appliance having both explanatory comment and extra-linguistic signalization upon actuation thereof and reversible stepping between those two |
| 07/13/1994 | EP0605883A2 Digital-analog converter, offset adjustor and portable communication terminal unit |
| 07/13/1994 | EP0605711A1 Improvements in or relating to mobile cellular radio systems |