Patents
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)
02/2000
02/24/2000DE19838244A1 Method of simultaneously receiving signals of different radio standards e.g. GPS and DAB by superposition of several modulation types
02/24/2000DE19837765A1 Protective hinged two-part cover for mobile telephones made from hard material protects from damage such as scratches on display panels and shocks during physical movement.
02/24/2000DE19836888A1 Method and device for a duplex capable radio transmission system with code division multiple access synchronizes with TDD operations, a control centre radio base station and numerous subscriber stations independent of each other.
02/24/2000DE19836582A1 Correcting carrier wave frequency shift in direct sequence band spread communication system
02/24/2000CA2340644A1 Method and device for a full-duplex-capable radio transmission system with cdma access
02/24/2000CA2340446A1 Synchronisation of a low power clock in a wireless communication device
02/24/2000CA2339969A1 Method and apparatus for power saving in a mobile terminal with established connections
02/23/2000EP0981208A2 Base station transmitter for cdma system, power control and serial signal transmitting method therefor
02/23/2000EP0981207A1 Pilot symbols
02/23/2000EP0981206A1 Spread spectrum receiver with reduction of intersymbol interference
02/23/2000EP0981177A2 Transmitting- and receiving device
02/23/2000EP0981113A2 Digital watermarking and methods for security documents
02/23/2000EP0980605A2 Mask generating polynomials for pseudo-random noise generators
02/23/2000EP0980604A2 Method for reducing interference, and synthesizer arrangement
02/23/2000EP0980602A1 Broadband modem transformer hybrid
02/23/2000EP0968497A4 Variable length audio coding using a plurality of subband bit allocation patterns
02/23/2000CN1245607A Method and apparatus for digital symbol detection using transmission medium response estimates
02/23/2000CN1245600A System for improving quality of received radio signal
02/23/2000CN1245368A Transmitter-receiver
02/22/2000US6029136 Band dividing/synthesizing filter with reduced memory requirements
02/22/2000US6029126 Scalable audio coder and decoder
02/22/2000US6029074 Hand-held cellular telephone with power management features
02/22/2000US6029072 Portable telephone with terminal mode facility
02/22/2000US6029061 Power saving scheme for a digital wireless communications terminal
02/22/2000US6029058 Spectrum control for direct conversion radio frequency reception
02/22/2000US6029055 Frequency stabilization circuit using signal level threshold
02/22/2000US6029054 MMIC receiver
02/22/2000US6029053 Apparatus and method for reducing co-channel radio interference
02/22/2000US6029052 Multiple-mode direct conversion receiver
02/22/2000US6028894 SIR or SNR measurement apparatus
02/22/2000US6028890 Baud-rate-independent ASVD transmission built around G.729 speech-coding standard
02/22/2000US6028888 Single-channel and multi-channel coherent demodulation devices with no pilot signal, and corresponding receiving system using a plurality of diversity paths
02/22/2000US6028887 Power efficient receiver
02/22/2000US6028886 Digital communication apparatus
02/22/2000US6028885 Frequency hopping radio transmitter apparatus and method providing very high communication security
02/22/2000US6028883 Low power signal processing for spread spectrum receivers
02/22/2000US6028868 Apparatus and method of synchronizing a transmitter in a subscriber terminal of a wireless communications system
02/22/2000US6028852 CDMA cellular radio transmission system
02/22/2000US6028850 Wireless transceiver and frequency plan
02/22/2000US6028559 Loop antenna
02/22/2000US6028556 Portable radio communication apparatus
02/22/2000US6028503 Contactless data transmission and receiving device with a synchronous demodulator
02/22/2000US6028374 Extending battery life in electronic apparatus
02/22/2000CA2222575C Tuner for digital satellite receiver
02/22/2000CA2161257C Method and apparatus for testing telecommunications equipment using a reduced redundancy test signal
02/22/2000CA2137716C Code division multiple access signal receiving apparatus for base station
02/22/2000CA2118537C High data rate satellite communication system
02/22/2000CA2108309C Paging receiver and radio frequency channel searching method for the same
02/21/2000CA2277421A1 Cdma system
02/21/2000CA2275914A1 Methods and apparatus for reducing cochannel interference in a mixed-rate communication system
02/20/2000CA2275842A1 Method and apparatus for adjusting pilot signal relative to input signal
02/19/2000CA2280489A1 Rf power amplifier control system
02/17/2000WO2000008878A1 Audio system incorporating detachable cellular telephone
02/17/2000WO2000008871A2 Device and method for diversity combining signals on common channel in cdma communication system
02/17/2000WO2000008869A2 Channel communication apparatus and method in cdma communication system
02/17/2000WO2000008868A2 Method for implementing radio link protocol for efficient data transmission
02/17/2000WO2000008867A2 Method for providing a data service in a cdma communications system
02/17/2000WO2000008864A2 Transmitter of multiple frequency radio communication system
02/17/2000WO2000008783A1 Device and system for integrating and processing infrared (ir) and radio frequency (rf) signals
02/17/2000WO2000008775A1 Rf receiver having cascaded filters and an intermediate amplifier stage
02/17/2000WO2000008774A1 Orthogonal signal transmitter
02/17/2000WO2000008773A2 Radio devices including power amplifier control circuits with hardware lockouts
02/17/2000WO2000008771A1 Method and apparatus for rotating modulation symbol indices
02/17/2000WO2000008752A1 Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device
02/17/2000WO2000008751A1 Automatic gain control circuit for controlling multiple variable gain amplifier stages while estimating received signal power
02/17/2000WO2000008722A1 Moisture resistant electrical connector for a cellular telephone
02/17/2000WO2000008707A1 Antenna for hand-held communication user terminal
02/17/2000WO2000008706A2 Device and method for controlling initial transmission power of forward link channel in mobile communications system
02/17/2000WO2000008548A1 Gui of remote control facilitates user-friendly editing of macros
02/17/2000WO2000008528A1 Method for adapting an electronic device on a watch
02/17/2000WO2000008481A1 Slewing bandpass filter for ultrasound image analysis
02/17/2000WO2000008480A2 Multi-conversion radar detector having increased tuning range and self-calibrating function
02/17/2000WO1998056120A8 Transmit power control in a radio communication system
02/17/2000DE19935493A1 System und Verfahren zur Datenverarbeitung sowie Vorrichtung und Verfahren zum Senden und Empfangen von Daten System and method for data processing as well as apparatus and method for transmitting and receiving data
02/17/2000CA2349324A1 Rf receiver having cascaded filters and an intermediate amplifier stage
02/17/2000CA2339655A1 Automatic gain control circuit for controlling multiple variable gain amplifier stages while estimating received signal power
02/17/2000CA2338470A1 Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device
02/17/2000CA2338420A1 Method for implementing radio link protocol for efficient data transmission
02/17/2000CA2336891A1 Slewing bandpass filter for ultrasound image analysis
02/16/2000EP0980160A1 Multirate, multicode CDMA transmission for a cellular mobile radio system
02/16/2000EP0980159A1 Device enabling different spreading factors whilst preserving a common scrambling code
02/16/2000EP0980158A1 Method and interface for interconnection using high bit rate serial links
02/16/2000EP0980157A2 Frame synchronisation in a DAB receiver
02/16/2000EP0980150A2 Multiple user CDMA basestation modem
02/16/2000EP0980149A2 An FFT-based CDMA rake receiver system and method
02/16/2000EP0980114A1 Helical antenna and portable transceiver
02/16/2000EP0980113A2 Antenna device
02/16/2000EP0980112A2 A dual autotrack control system
02/16/2000EP0979569A1 Communication terminal apparatus and method for selecting options using a dial shuttle
02/16/2000EP0979560A2 Method, system, and computer program product for spread spectrum communication using circular waveform shift-keying
02/16/2000EP0979559A1 Amplifier module with two power amplifiers for dual band cellular phones
02/16/2000EP0979558A1 A method and apparatus for interfacing an electronic device with an external accessory
02/16/2000EP0979557A1 Configurable single-chip transceiver integrated circuit architecture
02/16/2000EP0979551A1 Method and apparatus for efficient signal power amplification
02/16/2000EP0834123B1 Machine control module for a processor
02/16/2000EP0668663B1 Sliding correlation detector
02/16/2000CN2364554Y Battery compartment of mobile telephone with enhanced receiving signal
02/16/2000CN1244983A High-data-rate supplemental channel for CDMA telecommunications system
02/16/2000CN1244980A Signal transmitter with automatic output control
02/16/2000CN1244978A Despreading of direct sequence spread spectrum communications signals