Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission
More topics under "H04B - Transmission" (547,929)
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)
H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
H04B 11 - Transmission systems employing ultrasonic, sonic or infrasonic waves (1,545)
H04B 13 - Transmission systems characterised by the medium used for transmission, not provided for in groups (1,959)
H04B 14 - Transmission systems not characterised by the medium used for transmission (7,274)
H04B 15 - Suppression or limitation of noise or interference (10,227)
H04B 17 - Monitoring; Testing (29,423)
H04B 3 - Line transmission systems (31,523)
H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859)
H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
Patents for H04B - Transmission (2,303)
02/2000
02/02/2000CN1243362A Power control method
01/2000
01/25/2000US6017247 Arrangement of contact pairs for compensation of near-end crosstalk
01/11/2000US6014084 Electronic self-locating system and method
12/1999
12/29/1999CN1240075A Direct satellite direct broadcast system
12/29/1999CN1239849A RF communications system operable in presence of repetitive interference source and related methods
12/21/1999US6006071 RF communications system operable in the presence of a repetitive interference source and related methods
12/01/1999EP0961413A2 A transport package for a mobile station
11/1999
11/30/1999US5995538 Spread spectrum multipath processor system and method
11/23/1999US5991279 Wireless packet data distributed communications system
11/18/1999WO1999059334A1 Personal navigator system
11/18/1999CA2330879A1 Personal navigator system
11/11/1999WO1999057871A1 Radiophone
11/11/1999WO1999057826A1 Method of synchronisation of a base station network
11/11/1999WO1999057402A1 Drive system for a partition wall system
10/1999
10/21/1999WO1999019988B1 Method and system for network access over a low bandwidth link
10/14/1999WO1999045656A3 A differential line driver
10/12/1999US5966373 Waveform and frame structure for a fixed wireless loop synchronous CDMA communications system
10/06/1999EP0947066A1 A method and an apparatus for determining the pathloss between a base transceiver station and a mobile station in a mobile radio network
10/06/1999EP0947056A1 Method for transmission of data packets
10/05/1999US5963586 Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
09/1999
09/29/1999EP0944967A1 Digital satellite direct broadcast system
09/10/1999WO1999045656A2 A differential line driver
09/10/1999WO1999019988A3 Method and system for network access over a low bandwidth link
09/02/1999WO1999017458A3 Two-stage multicast communication protocol
08/1999
08/18/1999EP0936764A2 Method and apparatus for calibration of digital down converters in a signal processing system
08/18/1999EP0936753A2 Power control method for a CDMA system
08/12/1999DE4292273C2 Radiotelephone for use in mobile communication
08/11/1999EP0935347A2 RF communications system operable in the presence of a repetitive interference source and related methods
08/10/1999CA2259671A1 Method and apparatus for calibration of digital down converters in a signal processing system
08/05/1999DE4244967C2 Radiotelephone for use in mobile communication
07/1999
07/27/1999US5930692 Method and apparatus for increasing receiver immunity to interference
07/21/1999EP0719439B1 Voice activity detector
07/15/1999WO1999025070A3 Multi-frequency remote location, communication, command and control system and method
07/13/1999CA2139895C Residual echo elimination with proportionate noise injection
07/12/1999CA2258056A1 Rf communications system operable in the presence of a repetitive interference source and related methods
07/06/1999US5920590 Variable bandwidth spread spectrum device
06/1999
06/29/1999US5917856 Method for establishing a PAM signal connection using a training sequence
06/29/1999US5917310 Spring operated current generator for supplying controlled electric current to a load
06/22/1999US5915090 Apparatus for transmitting a distributed computing application on a broadcast television system
06/17/1999WO1999030234A1 Waveform and frame structure for a fixed wireless loop synchronous cdma communications system
06/17/1999WO1999016178A3 Multiple u channel isdn communications interface
06/16/1999EP0923198A2 A method for selecting the frequency range in radio communication devices operating in several frequency ranges and a communication device
06/10/1999WO1999029047A1 Method and apparatus for increasing receiver immunity to interference
06/10/1999CA2275115A1 Method and apparatus for increasing receiver immunity to interference
05/1999
05/20/1999WO1999025070A2 Multi-frequency remote location, communication, command and control system and method
05/19/1999EP0917297A2 Radio transceiver with two frequency bands
05/11/1999CA2098580C Method and apparatus for reducing interference in a radio communication link of a cellular communication system
05/07/1999CA2220480A1 Multi-frequency remote communications system
04/1999
04/22/1999WO1999019988A2 Method and system for network access over a low bandwidth link
04/22/1999CA2306411A1 Method and system for network access over a low bandwidth link
04/08/1999WO1999017458A2 Two-stage multicast communication protocol
04/06/1999CA1340489C Actuator and communication systems
04/01/1999WO1999016178A2 Multiple u channel isdn communications interface
04/01/1999CA2304717A1 Multiple u channel isdn communications interface
03/1999
03/31/1999CN1212800A Method for controlling base station, and base station
03/25/1999DE19819279C1 Automatically operated room divider system
03/17/1999CN1211360A 光学脉冲源 The optical pulse source
03/02/1999US5878036 Wireless telecommunications system utilizing CDMA radio frequency signal modulation in conjunction with the GSM A-interface telecommunications network protocol
02/1999
02/09/1999US5870429 Apparatus method, and software modem for utilizing envelope delay distortion characteristics to determine a symbol rate and a carrier frequency for data transfer
02/02/1999US5867490 Direct radio broadcast receiver for providing frame synchronization and correlation for time division multiplexed transmissions
01/1999
01/28/1999WO1998048562A3 Connection time free data messaging through telephone networks
01/21/1999WO1998045953A3 Regional communication system
12/1998
12/02/1998CN1200488A Electronic self-locating system and method
11/1998
11/25/1998EP0880117A2 Building security system
11/25/1998EP0879527A1 Training process
11/25/1998EP0776557A4 Multi-band, multi-mode spread-spectrum communication system
11/19/1998CA2237671A1 Electronic self-locating system and method
11/18/1998EP0878065A2 Method for controlling a base station, and a base station
11/18/1998CN1199262A Transmission line protection system
11/10/1998US5835527 Spread spectrum adaptive power control system and method
11/03/1998US5832028 Method and apparatus for coherent serial correlation of a spread spectrum signal
10/1998
10/29/1998WO1998048562A2 Connection time free data messaging through telephone networks
10/29/1998CA2287431A1 Connection time free data messaging through telephone networks
10/22/1998WO1998023040A3 Novel multi-access cs-p/cd-e system and protocols on satellite channels applicable to a group of mobile users in close proximity
10/21/1998EP0872061A1 A data transmission method, and a cellular radio system
10/21/1998EP0801856A4 Spread-spectrum system and method
10/21/1998CN1196841A Apparatus and method of determining symbol rate and carrier frequency
10/21/1998CN1196614A Receiving apparatus portable receiving apparatus and electronic watch
10/15/1998WO1998045953A2 Regional communication system
10/07/1998EP0869587A2 Contact pair configuration for compensating cross-talk
10/06/1998US5819165 System for regulating the power output of and linearizing the transmission signal from a radio transmitter
10/06/1998US5819034 In a distributed computer system
09/1998
09/29/1998US5815820 Transmitter having adjustable power levels responsive to the position of a movable antenna
09/15/1998US5809401 Method and apparatus for reducing interference in a radio communication link of a cellular communication system
09/05/1998CA2229967A1 Arrangement of contact pairs for compensation of near-end crosstalk
07/1998
07/28/1998US5787129 Decoder for a trellis encoded signal corrupted by NTSC co-channel interference and white noise
07/01/1998EP0851616A1 Reliable optical network
07/01/1998CN1186586A Wireless telecommunications system utilizing CDMA radio frequency signal modulation with GSM A-interface
06/1998
06/25/1998WO1998027675A1 A method and an apparatus for determining the pathloss between a base transceiver station and a mobile station in a mobile radio network
06/10/1998CN1184383A Personal communicator
05/1998
05/28/1998WO1998023040A2 Novel multi-access cs-p/cd-e system and protocols on satellite channels applicable to a group of mobile users in close proximity
05/27/1998EP0843911A1 Generator
05/26/1998US5757847 Method and apparatus for decoding a phase encoded signal
05/19/1998US5754585 Method and apparatus for serial noncoherent correlation of a spread spectrum signal
05/19/1998US5754584 Non-coherent spread-spectrum continuous-phase modulation communication system
05/14/1998WO1998020630A1 Direct satellite direct broadcast system
05/14/1998CA2270134A1 Digital satellite direct broadcast system
05/05/1998US5749067 Voice activity detector
04/1998
04/23/1998WO1998016996A1 Decoder for a trellis encoded signal corrupted by ntsc co-channel interference and white noise
03/1998
03/24/1998US5732341 Method and apparatus for increasing receiver immunity to interference
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