| 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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| 02/03/1999 | CN1207001A Frequency change total duplex communication method and frequency change total duplex wireless telephone system |
| 02/03/1999 | CN1206967A Broadband communication receiver |
| 02/03/1999 | CN1206835A Signal power measuring equipment |
| 02/02/1999 | US5867815 Method and device for controlling the levels of voiced speech, unvoiced speech, and noise for transmission and reproduction |
| 02/02/1999 | US5867797 Portable telephone set having a power controller causing a current charging of a battery to be held constant |
| 02/02/1999 | US5867794 Audio-output for a portable radio telephone utilizing a vehicle's AM/FM radio |
| 02/02/1999 | US5867792 Radio communication system |
| 02/02/1999 | US5867777 Variable-gain amplifier circuit, offset control method in variable-gain amplifier circuit, radio receiver with variable-gain amplifier circuit, and radio receiving method in radio receiver with variable-gain amplifier |
| 02/02/1999 | US5867776 Receiver for receiving text-based multiplex broadcasts |
| 02/02/1999 | US5867774 Smart remote control panel for a radio |
| 02/02/1999 | US5867773 Modular assembly for centrally locating cellular telephone accessory connections |
| 02/02/1999 | US5867769 Transmission power control apparatus in earth station for satellite communication |
| 02/02/1999 | US5867768 Simultaneous multidirectional communication apparatus |
| 02/02/1999 | US5867574 Voice activity detection system and method |
| 02/02/1999 | US5867540 Echo removing system between a mobile communication subscriber and a fixed communication subscriber |
| 02/02/1999 | US5867539 Methods and apparatus for reducing the effect of impulse noise on receivers |
| 02/02/1999 | US5867537 Balanced tranversal I,Q filters for quadrature modulators |
| 02/02/1999 | US5867535 Common transmit module for a programmable digital radio |
| 02/02/1999 | US5867527 Method of searching for a bursty signal |
| 02/02/1999 | US5867525 Synchronizer and method therefor and communications system incorporating same |
| 02/02/1999 | US5867497 Network system having automatic reconstructing function of logical paths |
| 02/02/1999 | US5867493 Apparatus and method for selective masking of telecommunications systems |
| 02/02/1999 | US5867370 Plastic shield enclosure and method of producing the same |
| 02/02/1999 | US5867207 Program guide in a digital video system |
| 02/02/1999 | US5867127 Wireless communication device with antenna-activated switch |
| 02/02/1999 | US5867120 Transmitter-receiver |
| 02/02/1999 | US5866891 Transmitter-receiver for non-contact IC card system |
| 02/02/1999 | CA2175242C Wideband fft channelizer |
| 02/02/1999 | CA2164323C Temperature compensated variable gain amplifier |
| 02/02/1999 | CA2086358C Tap-weight controller for adaptive matched filter receiver |
| 02/02/1999 | CA2081353C Pulse noise detecting circuit of am receiver |
| 01/31/1999 | CA2242731A1 Spread spectrum transceiver |
| 01/29/1999 | CA2241303A1 Method and circuit arrangement to reduce a dc-offset |
| 01/28/1999 | WO1999004538A1 Method and apparatus for data transmission within a broad-band communication system |
| 01/28/1999 | WO1999004525A1 Cdma direct spread overlay system and method of operation |
| 01/28/1999 | WO1999004507A2 Method and system for controlling the use of satellite transmission capacity in terrestrial networks |
| 01/28/1999 | WO1999004506A1 Method for coding an audio signal |
| 01/28/1999 | WO1999004505A1 Method for signalling a noise substitution during audio signal coding |
| 01/28/1999 | WO1999004504A1 Radio communication equipment |
| 01/28/1999 | WO1999004503A1 System and method for dynamic amplitude adjustment of modulating signal in frequency modulated transceivers |
| 01/28/1999 | WO1999004502A1 Method and apparatus for external band selection of a digital microwave radio |
| 01/28/1999 | WO1999004500A1 Hand-held telephone device |
| 01/28/1999 | WO1999004498A2 Method and apparatus for encoding and decoding multiple audio channels at low bit rates |
| 01/28/1999 | DE19731387A1 Portable data reproduction device for use as tourist guide |
| 01/28/1999 | DE19731000A1 Measurement data transmission method e.g. for electricity meter |
| 01/28/1999 | CA2296696A1 System and method for dynamic amplitude adjustment of modulating signal in frequency modulated transceivers |
| 01/28/1999 | CA2294507A1 Cdma direct spread overlay system and method of operation |
| 01/28/1999 | CA2290967A1 Method and system for controlling the use of satellite transmission capacity in terrestrial networks |
| 01/27/1999 | EP0893899A2 Burst-mode optical receiver and correction of dc offset |
| 01/27/1999 | EP0893892A2 Data broadcasting receiver |
| 01/27/1999 | EP0893890A2 CDMA Transceiver and transmission power control in mobile communication systems |
| 01/27/1999 | EP0893889A2 Method and apparatus for transmission power control in a CDMA communication system |
| 01/27/1999 | EP0893888A2 Spread spectrum communication apparatus and rake receiver |
| 01/27/1999 | EP0893887A2 Dual band radio communication apparatus |
| 01/27/1999 | EP0893882A2 High frequency switch device, front end unit and transceiver |
| 01/27/1999 | EP0893777A2 A data card housing |
| 01/27/1999 | EP0829145B1 Data broadcasting system using the human ear properties |
| 01/27/1999 | EP0791256B1 Process for transmitting messages from a secondary control system to a primary control system |
| 01/27/1999 | CN2305810Y Casing of duplex rodio fixing staion |
| 01/27/1999 | CN2305809Y Radio communication switching device |
| 01/27/1999 | CN1206547A Method and arrangement for cooling apparatus cabinet |
| 01/27/1999 | CN1206515A Efficient parallel-stage power amplifier |
| 01/27/1999 | CN1206466A Antenna adapter |
| 01/27/1999 | CN1206293A Co-channel interference canceler and driving method therefor |
| 01/27/1999 | CN1206267A CDMA radio communication apparatus |
| 01/27/1999 | CN1206265A Video signal recording apparatus and method |
| 01/27/1999 | CN1206261A Radiotelephone unit |
| 01/27/1999 | CN1206255A Pesudo-random noise detector for signals having carrier frequency offset |
| 01/27/1999 | CN1206254A High data rate spread spectrum transceiver and associated methods |
| 01/27/1999 | CN1206252A Apparatus for suppressing interfering DC component shifts in radio receiver of direct conversion type, and corresponding method of suppression |
| 01/27/1999 | CN1206251A Adaptive pre-distortion apparatus for linearizing amplifier output within data transmission system |
| 01/27/1999 | CN1206249A Data transmission system, receiver, and recording medium |
| 01/26/1999 | US5864820 Method, system and product for mixing of encoded audio signals |
| 01/26/1999 | US5864816 Method of mixing two or more compressed digitized audio signals |
| 01/26/1999 | US5864802 Digital audio encoding method utilizing look-up table and device thereof |
| 01/26/1999 | US5864800 Methods and apparatus for processing digital signals by allocation of subband signals and recording medium therefor |
| 01/26/1999 | US5864799 Apparatus and method for generating noise in a digital receiver |
| 01/26/1999 | US5864754 System and method for radio signal reconstruction using signal processor |
| 01/26/1999 | US5864753 Radio station tuning system |
| 01/26/1999 | US5864751 System for programming a radio receiver |
| 01/26/1999 | US5864750 Microcomputer-based carrier detection system for a cordless telephone by comparing an output signal which contains signals no higher in frequency with a frequency threshold value |
| 01/26/1999 | US5864586 Radio apparatus with offset compensating circuit |
| 01/26/1999 | US5864580 Miniature wireless modem |
| 01/26/1999 | US5864578 In a spread-spectrum-communications system |
| 01/26/1999 | US5864548 Method and apparatus for fast modulation in synchronous CDMA communications |
| 01/26/1999 | US5864544 For use in a time division duplex communication system |
| 01/26/1999 | US5864321 Microwave terrestrial radio with dovetail attachment and reference plane |
| 01/26/1999 | US5864302 Transmitting and receiving system |
| 01/26/1999 | US5864267 Electronic-tuning type radio-frequency tuning circuit |
| 01/26/1999 | US5864260 Monolithic saw duplexer |
| 01/26/1999 | US5864256 Circuit arrangement with a filter quadripole |
| 01/26/1999 | CA2109923C Frequency offset method and apparatus for use in a transceiver |
| 01/26/1999 | CA2072474C Radio receiver capable of suppressing a frequency drift in an intermediate frequency |
| 01/26/1999 | CA2042680C A hybrid balance and combination codec filter circuit |
| 01/25/1999 | CA2243683A1 A data card housing |
| 01/21/1999 | WO1999003271A1 Interactive program guide navigator |
| 01/21/1999 | WO1999003225A1 Rate detection for variable rate cdma communication system |
| 01/21/1999 | WO1999003219A1 Wake-up circuit for an electronic apparatus |
| 01/21/1999 | WO1999003210A1 Audio encoder |
| 01/21/1999 | WO1999003200A1 Impedance match of transmission lines |