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)
04/1999
04/28/1999EP0910902A1 Method for efficient sampling in a correlator
04/28/1999EP0910901A1 Method for doppler-replica harmonic avoidance in a gps receiver
04/28/1999EP0910900A1 A method of coding and decoding audio signals
04/28/1999EP0910899A2 Transponder communication device
04/28/1999EP0910898A1 Selective recall and preservation of continuously recorded data
04/28/1999EP0910894A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems
04/28/1999EP0910893A2 Radio receiver
04/28/1999EP0910805A1 Power efficient receiver
04/28/1999CN1215542A Integrated electronic communication device and clip
04/28/1999CN1215523A Casing for a cordless telephone, and assembly of a casing with a cordless telephone
04/28/1999CN1215511A Method and circuit arrangement for reducing offset voltage of a signal
04/28/1999CN1215510A Wide band audio signal encoder, wide band audio signal decoder, wide band audio signal encoder/decoder and wide band audio signal recording medium
04/28/1999CN1215303A Radio telephone electromagnetic radiation shielding cover and its production method
04/28/1999CN1215294A CDMA cellular communication system
04/28/1999CN1215267A Synchronous trap circuit in CDMA communication
04/28/1999CN1215262A Method and system for reducing wave beam interference and multipass attenuation in satellite communication system
04/28/1999CN1215261A Double-mode demodulator
04/28/1999CN1215233A Antenna diplexer
04/28/1999CN1043175C Extracting circuit of time reporting signal in radio broadcasting
04/27/1999US5898933 Apparatus and method for generating a control signal responsive to a movable antenna
04/27/1999US5898932 Portable cellular phone with integral solar panel
04/27/1999US5898911 Current-stacked DX switch with high rf isolation
04/27/1999US5898910 RBDS receiver provided with a database having broadcasting station related information
04/27/1999US5898909 Ultra high frequency radio communication apparatus
04/27/1999US5898908 RF gain enhancement for cellular telephone
04/27/1999US5898907 Radio transmitter-receiver adopting both a single frequency and a double frequency conversion
04/27/1999US5898906 System and method for implementing a cellular radio transmitter device
04/27/1999US5898774 Portable telephone having a reversible and sliding card casing
04/27/1999US5898741 Delayed detection MRC diversity circuit
04/27/1999US5898738 Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card
04/27/1999US5898733 Packet hopping system with sliding frequency, and transciever for the system
04/27/1999US5898728 Distributed analog-digital frequency dehopping system
04/27/1999US5898685 Burst synchronization of time division multiplexed transceiver pairs
04/27/1999US5898682 Radio channel control apparatus used in a CDMA cellular system and capable of changing cell size
04/27/1999US5898665 Coherent tracking apparatus and method for CDMA receiver
04/27/1999US5898406 Antenna mounted diplexer
04/27/1999US5898398 Remote control device and remote control method
04/27/1999US5898162 Hand-held data capture system with interchangeable modules
04/27/1999US5897605 Spread spectrum receiver with fast signal reacquisition
04/27/1999CA2156757C Spread-response precoding system for wireless transmission
04/27/1999CA2156353C Two position fold-over dipole antenna
04/27/1999CA2057802C Key control method and control device for a cassette tape recorder
04/27/1999CA2055576C Signal processing circuit for the european digital cellular radiotelephone system
04/22/1999WO1999020076A1 Method for safe transmission of a telecommunication system cells
04/22/1999WO1999020007A1 A system and method for mitigating intermittent interruptions in an audio radio broadcast system
04/22/1999WO1999020005A2 Apparatus and method for selecting power control modes
04/22/1999WO1999020000A2 A method of and a system for voice and data radio communication providing improved interference diversity
04/22/1999WO1999019995A1 Apparatus and method for optimized power control
04/22/1999WO1999019993A1 Method and apparatus for the generation of frequency hopping sequences
04/22/1999WO1999019992A1 Multi-layered pn code spreading in a multi-user communications system
04/22/1999WO1999019991A1 Digital radio-frequency transceiver
04/22/1999WO1999019990A2 Compensation of delay in linearization loop of power amplifier
04/22/1999WO1999007093A3 Wireless broadband transmitter for a signal consisting of a plurality of digitally modulated carriers
04/22/1999WO1998045961A9 Methods and apparatus for burst-mode cdma dsss communications receiving systems
04/22/1999DE19842028A1 High frequency communications unit for wireless communications system
04/22/1999DE19745969A1 Access authorization method for pay-television receiver
04/22/1999DE19742347A1 Luftschnittstelle zur effizienten Nutzung des Spektrums im 2,4 GHz ISM-Band unter Verwendung bestehender DECT-Basisband-Controller Air interface for the efficient use of the spectrum in the 2.4 GHz ISM band using existing DECT baseband controller
04/22/1999DE19742346A1 Reception signal preamplifier arrangement for radio communications station
04/22/1999CA2306281A1 Method for safe transmission of a telecommunication system cells
04/22/1999CA2306213A1 A method of and a system for voice and data radio communication providing improved interference diversity
04/21/1999EP0910218A2 Audio program reception terminal for television delivery system
04/21/1999EP0910191A1 Radio communication equipment
04/21/1999EP0910188A1 A method of and a system for voice and data radio communication providing improved interference diversity
04/21/1999EP0910178A2 Method and system for reducing interbeam interference and multipath fading in bent-pipe satellite communications systems
04/21/1999EP0910174A2 Code shift keying (CSK) apparatus and method for spectrum spread communication
04/21/1999EP0910173A1 Communication system with transmission and reception antennas located close to each other
04/21/1999EP0910167A1 Multi-tuner data multiplex broadcast receiver
04/21/1999EP0910132A2 Auto-acceleration system for prime mover of hydraulic construction machine and construction machine and control system for prime mover and hydraulic pump
04/21/1999EP0910067A1 Audio signal coding and decoding methods and audio signal coder and decoder
04/21/1999EP0910034A2 Modulation method for the data transmission from a transponder to a writer/reader
04/21/1999EP0909493A1 Method and apparatus for optimizing a medium access control protocol
04/21/1999EP0909486A2 Base station with antenna, including an amplifier, located at a distance from the base station
04/21/1999EP0909485A1 Dual band transceiver
04/21/1999EP0909483A1 A method of and an arrangement for controlling an oscillator
04/21/1999EP0909442A1 Voice activity detector
04/21/1999EP0780007B1 Radio frequency circuit and memory in thin flexible package
04/21/1999CN2315741Y Hand held mobile telephone set capable of proofing electromangetic radiation
04/21/1999CN2315738Y Radio fixed station
04/21/1999CN2315733Y Position sign communication device for new safety counter information system
04/21/1999CN2315726Y Signal transmission device for radio fuse
04/21/1999CN2315725Y Radio receiver with hand high efficiency generator
04/21/1999CN2315724Y Fully automatic timed FM broadcasting device for public place
04/21/1999CN2315723Y Intermodulation suppressor
04/21/1999CN1214833A Portable terminal equipment
04/21/1999CN1214823A Portable terminal equipment
04/21/1999CN1214822A Portable terminal equipment
04/21/1999CN1214817A Method and circuit arrangement for processing received signal
04/21/1999CN1214816A Method for reducing interference and radio system
04/21/1999CN1214601A Communication control apparatus and method
04/21/1999CN1214580A Method and apparatus of detecting spectrum spread signal
04/21/1999CN1214579A TDD digital radio communication system and method for operating the same
04/21/1999CN1214576A Method of sampling, downconverting, and digitizing bandpass signal using digital predictive coder
04/21/1999CN1214489A Automatic wake-up device for radio automatic recognition terminal and communication method using the terminal
04/21/1999CN1043107C Data transfer method having dual-frequency operation
04/20/1999US5896576 Audio mute for digital cordless telephone
04/20/1999US5896574 Wireless modem with a supplemental power source
04/20/1999US5896563 Transmitting and receiving switch comprising a circulator and an automatic changeover switch which includes an impedance circuit
04/20/1999US5896562 Transmitter/receiver for transmitting and receiving of an RF signal in two frequency bands
04/20/1999US5896560 Transmit control system using in-band tone signalling
04/20/1999US5896559 Receiving operation controller of communication apparatus