Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › 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
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)
10/2000
10/31/2000US6141568 Battery saving in portable radio apparatus
10/31/2000US6141561 Reception circuit for cellular telephone
10/31/2000US6141539 Isolation improvement circuit for a dual-polarization antenna
10/31/2000US6141538 Transmit detection circuit
10/31/2000US6141532 Transmission line switch-over control system
10/31/2000US6141426 Voice operated switch for use in high noise environments
10/31/2000US6141392 Receive antenna selection method and diversity receiver
10/31/2000US6141375 Plural synthesizer controlling system for personal handyphone system and plural synthesizer controlling method
10/31/2000US6141374 Method and apparatus for generating multiple matched-filter PN vectors in a CDMA demodulator
10/31/2000US6141373 Preamble code structure and detection method and apparatus
10/31/2000US6141372 Digital downconverter/despreader for direct sequence spread spectrum CDMA communications system
10/31/2000US6141371 Jamming suppression of spread spectrum antenna/receiver systems
10/31/2000US6141353 Subsequent frame variable data rate indication method for various variable data rate systems
10/31/2000US6141337 Spread spectrum communication system
10/31/2000US6141332 Orthogonal code synchronization system and method for spread spectrum CDMA communications
10/31/2000US6140973 Simple dual-frequency antenna
10/31/2000US6140971 Antenna device having feeding spring escape prevention ribs
10/31/2000US6140966 Double resonance antenna structure for several frequency ranges
10/31/2000US6140888 Method and structure for tuning the summing network of a base station
10/31/2000CA2212265C Is-95 compatible wideband communication scheme
10/31/2000CA2207158C Apparatus and method for identifying the type and brand of a battery for a portable device
10/31/2000CA2106222C Object oriented communication network
10/30/2000CA2303454A1 Frequency selectable transmitter-receiver for use in broadband wireless access communications systems
10/26/2000WO2000064116A1 Ofdm demodulator with phase correction of the i-q signals
10/26/2000WO2000064086A1 Spread spectrum receiver and method of receiving signals
10/26/2000WO2000064085A1 Channel estimate of a communication channel in a cdma system
10/26/2000WO2000064073A1 Interleaver and deinterleaver for use in a diversity transmission communication system
10/26/2000WO2000064072A1 Method and apparatus for improving radio link budget for a cellular base station
10/26/2000WO2000064067A1 Method and apparatus for successive cancellation using multiple signal timings
10/26/2000WO2000064066A1 System and method for achieving slot synchronization in a wideband cdma system in the presence of large initial frequency errors
10/26/2000WO2000064065A1 Receiver and synchronous acquisition method
10/26/2000WO2000064064A1 Digital radio system
10/26/2000WO2000064063A1 Variable length hand phones
10/26/2000WO2000064062A1 System and method for selectively controlling amplifier performance
10/26/2000WO2000064061A1 Method and apparatus for interference rejection
10/26/2000WO2000064044A1 Communication device
10/26/2000WO2000064042A2 Device for frequency down-converting using undersamling, and method
10/26/2000WO2000063867A1 Emergency call device for vehicles
10/26/2000WO2000027135A3 Mobile wireless internet portable radio
10/26/2000WO2000021208A3 Method and apparatus for interference cancellation in a rake receiver
10/26/2000DE4110704C2 Schaltung für ein aus einem Rundfunkempfänger oder einem Rundfunkempfänger und einem Recorder bestehendes Audiogerät A circuit consisting of a radio receiver or a radio receiver and a recorder audio device
10/26/2000DE19917883A1 Information transmission method for radio system
10/26/2000DE19916855A1 Funktelefonanlage mit Gruppenantenne für Fahrzeuge Radio telephone system with array antenna for vehicles
10/26/2000CA2370209A1 System and method for selectively controlling amplifier performance
10/25/2000EP1047265A2 Television signal receiving tuner with frequency-modulation broadcast-band attenuation circuit
10/25/2000EP1047258A2 Volume control for an alert generator
10/25/2000EP1047252A2 Portable wireless communication equipment
10/25/2000EP1047221A2 PN code generator, communication unit using the PN code generator, communication system, and PN code generation method
10/25/2000EP1047219A1 Method for balancing the ratio Eb/I in a service multiplexing CDMA system and telecommunication systems using same
10/25/2000EP1047218A2 Methods and apparatus for downlink diversity in CDMA using walsh codes
10/25/2000EP1047216A2 System and method for protecting a receiver from jamming interference
10/25/2000EP1047202A2 Mobile communications device, system, and method using spread spectrum transmission
10/25/2000EP1047201A2 CDMA receiver
10/25/2000EP1047200A2 Tuning circuit device with built-in band pass integrated on semiconductor substrate together with PLL circuit
10/25/2000EP1047192A1 CATV tuner
10/25/2000EP1047188A2 Offset voltage cancellation system for radio frequency power controllers
10/25/2000EP1047186A1 Amplifier form communication device
10/25/2000EP1046910A2 Apparatus for measuring gaseous components in breath and a cellular phone equipped with the function of measuring gaseous components
10/25/2000EP1046310A1 An antenna connector
10/25/2000EP1046264A1 Portable internet-enabled controller and information browser for consumer devices
10/25/2000EP1046259A2 Method and system related to an audio/video network
10/25/2000EP1046245A1 Method for the communication of information and apparatus employing the method
10/25/2000EP1046242A1 Method and apparatus for increasing spectral efficiency of cdma systems using direct sequence spread spectrum signals
10/25/2000EP1046241A1 A method using codebook indexing to achieve high bit densities in a ds-cdma-ss communication system
10/25/2000EP1046239A1 Method and apparatus for phase estimation in a transform coder for high quality audio
10/25/2000EP1046238A1 Method and apparatus for transceiving , receiving as well as transmitting
10/25/2000EP1046237A1 Method and apparatus for combating adjacent channel interference using multiple if filters
10/25/2000EP1046233A1 Radio receiver
10/25/2000EP1046232A1 Noise cancellation circuit and quadrature downconverter
10/25/2000EP1046229A1 Frequency synthesizer
10/25/2000EP1046224A1 Radio transmitter
10/25/2000EP1046222A1 Device and method for transmitting preamble of access channel in mobile communication system
10/25/2000EP1046145A1 Improvements in and relating to emitters
10/25/2000EP1046097A1 Remote control device with location dependent interface
10/25/2000EP1045726A1 Entertainment system portable electronic device, method of operating a portable electronic device and recording medium
10/25/2000EP0846368B1 An apparatus and method for providing a flexible ramp up and ramp down of the sections of a radio in a wireless local area network
10/25/2000CN1271490A Radio apparatus
10/25/2000CN1271477A Communication system and method with orthogonal block encoding
10/25/2000CN1271234A Tuning assembly for receiving TV signals
10/25/2000CN1271229A Volume control of alarm generator
10/25/2000CN1271222A CDMA receiver
10/25/2000CN1271219A Method and apparatus for down link diversity using volsch code in CDMA
10/25/2000CN1271215A Portable radio equipment
10/25/2000CN1271101A Bandpass sampling structure of wide frequency band signal analysis
10/25/2000CN1057884C System and method for generating single waveforms in CDMA celular telephone system
10/24/2000US6138101 Method of encoding digital data
10/24/2000US6138051 Method and apparatus for evaluating an audio decoder
10/24/2000US6138041 Device for safe use of a portable cellular telephone while driving
10/24/2000US6138010 Multimode communication device and method for operating a multimode communication device
10/24/2000US6138009 System and method for customizing wireless communication units
10/24/2000US6138000 Low voltage temperature and Vcc compensated RF mixer
10/24/2000US6137999 Image reject transceiver and method of rejecting an image
10/24/2000US6137997 Circuit for receiving and transmitting signals and method
10/24/2000US6137995 Circuit and method of generating a phase locked loop signal having an offset reference
10/24/2000US6137990 Apparatus for improving the signal to noise ratio in wireless communication systems through message pooling and method of using the same
10/24/2000US6137934 Optical cable with tubular metal core and method of making same
10/24/2000US6137843 Methods and apparatus for canceling adjacent channel signals in digital communications systems
10/24/2000US6137834 Method and apparatus for splicing compressed information streams
10/24/2000US6137831 Method and apparatus for reducing receiver imposed distortion
10/24/2000US6137826 Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals
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