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)
04/2000
04/12/2000CN1250249A Radio communication apparatus and its transmitted power controlling method
04/12/2000CN1250247A Frequency hopping and pilot frequency technology using for control sytsem for distortion generated from reducing circuit
04/12/2000CN1250234A Communication equipment, vehicular radio, base station and power controlling method
04/12/2000CN1051422C Equipment for and method of analog-to-digital conversion and digital-to-analog conversion of voice signal
04/12/2000CN1051416C A method and apparatus for determining signal usability
04/12/2000CN1051405C Battery pack retention apparatus
04/12/2000CN1051393C Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals
04/11/2000US6049873 Scrambled information transmitting and receiving method
04/11/2000US6049725 Charging cradle
04/11/2000US6049724 Ultra-clean voltage power supply generator
04/11/2000US6049722 Radio communication apparatus for use in dual-mode radio communication system and having factor variable control means dependent on the set mode
04/11/2000US6049716 Soft swap handoff method in CDMA cellular system
04/11/2000US6049708 Mobile communication apparatus for intermittently receiving a broadcasting signal at a corrected reception timing
04/11/2000US6049707 Broadband multicarrier amplifier system and method using envelope elimination and restoration
04/11/2000US6049703 Amplifier circuit and method for increasing linearity of the amplifier circuit
04/11/2000US6049702 Integrated passive transceiver section
04/11/2000US6049699 Apparatus for improving the signal to noise ratio in wireless communication systems through message pooling and method of using the same
04/11/2000US6049653 IR led assembly for VCR control of a cable converter unit
04/11/2000US6049563 Spread spectrum signal multiplexing system employing chirp signals
04/11/2000US6049562 Multi-branch frequency-hopping receiver
04/11/2000US6049561 Radio frequency communication system
04/11/2000US6049538 Efficient communication system using time division multiplexing and timing adjustment control
04/11/2000US6049535 Code division multiple access (CDMA) communication system
04/11/2000US6049313 Microwave detector
04/11/2000US6049307 Adaptive phased array antenna using weight memory unit
04/11/2000US6049293 Remote control system
04/11/2000US6049290 Control button interface for a portable communications device
04/11/2000US6049289 Remote controlled garage door opening system
04/11/2000US6047443 Hand strap storage structure for portable terminal device
04/11/2000CA2224340C Portable device battery technique
04/11/2000CA2209019C An antenna for a portable radio communication device
04/11/2000CA2197128C Enhanced joint stereo coding method using temporal envelope shaping
04/11/2000CA2183860C Process for the cascade coding and decoding of audio data
04/11/2000CA2179210C Apparatus and method for electronic polarization correction
04/06/2000WO2000019745A1 Avoiding interference from a potentially interfering transmitter in a wireless communication system
04/06/2000WO2000019732A2 Device and method for generating spreading code and spreading channel signals using spreading code in cdma communication system
04/06/2000WO2000019730A2 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system
04/06/2000WO2000019675A1 Digital receiver for a signal generated with discrete multi-tone modulation
04/06/2000WO2000019644A1 Adaptive wireless communication receiver
04/06/2000WO2000019642A1 Information system
04/06/2000WO2000019641A1 Apparatus for low power radio communications
04/06/2000WO2000019635A1 Power control in a radio system
04/06/2000WO2000019634A1 Method for the communication of information and apparatus employing the method
04/06/2000WO2000019632A1 Personal, self-programming, short-range transceiver system
04/06/2000WO2000019629A1 Using a single low-noise amplifier in a multi-band wireless station
04/06/2000WO2000019628A1 Integrated orthogonal mode transducer/filter design for microwave frequency-domain
04/06/2000WO2000019627A1 Device and process for coupling multi-band transmitters and receivers
04/06/2000WO2000019626A1 Programmable mobile radiotelephone terminal
04/06/2000WO2000019625A2 Mobile telephone having a folding antenna
04/06/2000WO2000019624A1 Filtering of a receive frequency band
04/06/2000WO2000019623A1 Using a single side band mixer to reject image signals in a wireless station
04/06/2000WO2000019622A1 Method and apparatus for transceiving, receiving as well as transmitting
04/06/2000WO2000019621A1 Even harmonic direct conversion receiver and a transceiver comprising the same
04/06/2000WO2000019620A1 Combined advertising and entertainment system network
04/06/2000WO2000019619A1 Device, system and method for low noise radio frequency transmission
04/06/2000WO2000019607A1 Dual band transmitter for a cellular phone comprising a pll
04/06/2000WO2000019602A1 Method and apparatus for base transceiver station cold starts
04/06/2000WO2000019600A1 Radio transmitter
04/06/2000WO2000019598A1 Method for separating a desired signal from an interfering signal
04/06/2000WO2000019567A1 Rf interface
04/06/2000WO2000002398A3 Method for transmitting power control signal in mobile communication system
04/06/2000WO1999067887A3 Telecommunication system with channel sharing
04/06/2000WO1999066643A3 Device and method for measuring non-orthogonal noise power for cdma communication system
04/06/2000WO1999065142A3 Mixer oscillator stage
04/06/2000DE19911244A1 Vorrichtung zur sicheren Benutzung eines tragbaren Mobiltelefons beim Autofahren Device for the safe use of a portable mobile phone while driving
04/06/2000DE19845608A1 Listening-speaking system especially for working on airfield where communications are required, has ear defender with vibration generator connected to coupling element on ear defender
04/06/2000DE19845054A1 Empfangsfrequenzbandfilterung Receive frequency band filtering
04/06/2000CA2311740A1 Method and apparatus for transceiving, receiving as well as transmitting
04/06/2000CA2280377A1 A quadrature low-if homodyne radio receiver
04/05/2000EP0991271A2 A locking/unlocking device in an audio-visual apparatus
04/05/2000EP0991245A1 New bracelet telephone device
04/05/2000EP0991235A2 Frame synchronization by detection of constellation size
04/05/2000EP0991213A2 Method and device for transmitting digital information, such as digital audio data, method and device for receiving said digital information, and method and system for transferring said digital information
04/05/2000EP0991212A2 Receiver for receiving Digital Audio Broadcast (DAB) programmes
04/05/2000EP0991210A2 Double side band pilot technique for a control system that reduces distortion produced by electrical circuits
04/05/2000EP0991209A2 Spread spectrum CDMA receiver
04/05/2000EP0991208A2 Method for formatting signal in mobile communication system
04/05/2000EP0991206A2 CDMA power control for paging and initial traffic channel power
04/05/2000EP0991205A2 Automatic power control for a CDMA communications system
04/05/2000EP0991204A2 A transmission power control method using a pilot symbol pattern
04/05/2000EP0991201A2 CDMA transmitter capable of reducing transmission power
04/05/2000EP0991200A2 Receiving circuit, mobile terminal with receiving circuit, and method of receiving data
04/05/2000EP0991199A2 Receiving circuit
04/05/2000EP0991198A2 Transmitter/Receiver apparatus with an antenna for use of both signal transmission and reception
04/05/2000EP0991197A1 Radio receiver and method of reception
04/05/2000EP0991193A1 Radio apparatus comprising a frequency synthesiser and phase discriminator for such an apparatus
04/05/2000EP0991189A2 Method of performing automatic frequency control in a mobile station during communication mode
04/05/2000EP0991188A2 Method of performing automatic frequency control in mobile station in waiting mode
04/05/2000EP0991183A2 Frequency hop pilot technique for a control system that reduces distortion produced by electrical circuits
04/05/2000EP0991182A2 Sweep pilot technique for a control system that reduces distortion produced by electrical circuits
04/05/2000EP0990340A1 Method of synchronization
04/05/2000EP0990313A2 Reduced peak-to-average amplitude multichannel link
04/05/2000EP0990312A2 Cdma communication system which selectively allocates bandwidth upon demand
04/05/2000EP0990310A1 Built-in mobile telephone device for motor vehicles
04/05/2000EP0990309A1 Signal detection method in a digital cellular receiver
04/05/2000EP0990308A1 Channel encoding device and method for communication system
04/05/2000EP0990276A1 Dual band antenna for mobile communications
04/05/2000EP0990272A1 Housing with a battery compartment closure
04/05/2000EP0876717B1 Time-duplex wireless telephone with improved hearing-aid compatibility
04/05/2000EP0720799A4 Interference suppression in cdma systems
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