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)
12/1997
12/17/1997CN1168035A Spectrum spread communications system for high-speed communications
12/17/1997CN1168034A Method and apparatus for encoding of digitalized audio signal
12/17/1997CN1168033A Improvements in or relating to radio receivers
12/17/1997CN1036755C Paging receiver and radio frequency channel searching method for same
12/17/1997CN1036754C Casing structure for apparatus using pneumatic battery
12/17/1997CA2208098A1 Radio pager
12/16/1997US5699484 Method and apparatus for applying linear prediction to critical band subbands of split-band perceptual coding systems
12/16/1997US5699479 Tonality for perceptual audio compression based on loudness uncertainty
12/16/1997US5699432 Circuit for mobile radio receivers
12/16/1997US5699426 Video data bus communication system and method
12/16/1997US5699385 Method and apparatus for locating and tracking a QPSK carrier
12/16/1997US5699383 High-power linear amplification using periodically updated amplitude and phase correction values
12/16/1997US5699380 Spread spectrum communication terminal apparatus in CDMA cellular telephone system
12/16/1997US5699066 Synchronized electronic identification system
12/16/1997US5699055 Trainable transceiver and method for learning an activation signal that remotely actuates a device
12/16/1997US5699054 For receiving an activation signal
12/16/1997US5699052 System for automatically selecting an available device in an audio/video system
12/16/1997US5699021 Balanced and buffered oscillator and transmitter arrangement
12/16/1997US5697724 Metal fitting structure for anchoring a chain to a portable apparatus
12/16/1997US5697384 Internal identification apparatus for animals
12/16/1997US5697124 Hinge mechanism for foldable electronic apparatus
12/16/1997CA2108208C Arrangement for demodulating speech signals discontinuously transmitted from a mobile unit
12/11/1997WO1997047149A2 Method and apparatus of preserving power of a remote unit in a dispatch system
12/11/1997WO1997047124A1 Method and apparatus for managing client-server communications
12/11/1997WO1997047117A1 Communications terminal having a single transducer for handset and handsfree receive functionality
12/11/1997WO1997047101A1 Method for processing of data with a radio receiver
12/11/1997WO1997047098A1 Subscriber unit for a cdma wireless communication system
12/11/1997WO1997047053A1 Receiver with stripline filter and stripline filter
12/11/1997WO1997025783A3 Single conversion tv/fm receiver for multimedia applications
12/11/1997DE19645449C1 Mechanically connecting car radio with media reproduction device
12/11/1997DE19628293C1 Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion Encoding and decoding of audio signals by using intensity stereo prediction and
12/11/1997DE19623122A1 Partial screening for antenna of portable telephone
12/10/1997EP0812096A2 Method and apparatus for managing communications between a client and a server in a network
12/10/1997EP0812095A2 Communication terminal apparatus and mobile telephone battery for supplying power thereto
12/10/1997EP0812092A2 Method and system for controlling the communication of electronic equipment
12/10/1997EP0812091A2 Method and system for controlling the communication of electronic equipment
12/10/1997EP0812071A2 System for transmitting informations
12/10/1997EP0812070A1 Method and device for compression encoding of a digital signal
12/10/1997EP0812069A2 Dual-mode cellular telephone system
12/10/1997EP0811964A2 Noise-reduced speech apparatus and noise-reduced speech method
12/10/1997EP0811277A1 Joint demodulation using spatial maximum likelihood
12/10/1997EP0811275A1 A radio having an option board interface and an option board for use therewith
12/10/1997EP0811274A1 Remote control device and remote control method
12/10/1997EP0811273A2 A receiver, an arrangement and a method for comparing two signals
12/10/1997EP0643889A4 Method and apparatus for coherent communication in a spread-spectrum communication system.
12/10/1997CN2270319Y Rodio communication apparatus for ship
12/10/1997CN1167416A Method for testing spectrum spreading signal in code division multi-address radio communication system
12/10/1997CN1167415A Radio communication device with autenna trigger switch
12/10/1997CN1167391A Noise-reducing talking device and method
12/10/1997CN1167387A Device for correcting phase noise in digital receiver
12/10/1997CN1167384A Transmission system for digital audio-frequency broadcasting
12/10/1997CN1167383A Transmission system for digital audio-frequency broadcasting
12/10/1997CN1167382A Transmission system for digital audio-frequency broadcasting
12/10/1997CN1167377A Pilot signal test method, device and receiver
12/10/1997CN1167376A Radio signal relay equipment of code classfied multi-address communication system
12/10/1997CN1167375A Digital radio communication method and system structure in very-small antenna globe station network
12/10/1997CN1167374A Data backup method for pager
12/10/1997CN1167367A Composite high-frequency element
12/10/1997CN1167347A Receiver
12/10/1997CN1167309A Rate changeable sonic code device
12/09/1997US5697096 Narrow-band communication apparatus
12/09/1997US5697095 For outputting a local oscillation signal to a mixer
12/09/1997US5697093 Zero IF receivers
12/09/1997US5697091 Distortion-free chopper-based signal mixer
12/09/1997US5697090 SHF converter
12/09/1997US5697088 Communication device
12/09/1997US5697086 Co-channel FM signal/interference canceller
12/09/1997US5697085 Radio transceiver comprising an arrangement for compensating for a DC component
12/09/1997US5697084 Reducing multipath fading using adaptive filtering
12/09/1997US5697081 Intermodulation distortion reduction circuit utilizing variable attenuation
12/09/1997US5697080 Method of and apparatus for selecting station in multiplexed broadcast, and receiving system
12/09/1997US5697078 Wideband channel sniffer for monitoring channel use in a wireless communication system
12/09/1997US5697075 Diversity apparatus for a global positioning system antenna
12/09/1997US5697074 Dual rate power control loop for a transmitter
12/09/1997US5697072 Transmission signal level control device for radio transmitter
12/09/1997US5697071 Mobile phone holder structure
12/09/1997US5697070 Battery pack for portable transceiver
12/09/1997US5697069 Transmit-receiver switch
12/09/1997US5697068 System and method for providing a non-invasively tunable transceiver synthesizer
12/09/1997US5697067 Communication system utilizing radiating transmission line
12/09/1997US5697061 Method and apparatus for providing information concerning products, using radio frequency transmissions
12/09/1997US5697049 Radio relay method, radio relay system using the method and radio unit
12/09/1997US5697048 On-vehicle data communication system and method
12/09/1997US5696830 Circuit arrangement for deriving a quality signal dependent on the quality of a received multiplex signal
12/09/1997US5696792 Digital radiocommunication terminal
12/09/1997US5696789 Apparatus and method for signal identification
12/09/1997US5696766 Apparatus and method of synchronizing a transmitter in a subscriber terminal of a wireless telecommunications system
12/09/1997US5696762 Rapid-acquisition access channel scheme for CDMA systems
12/09/1997US5696691 Self-adjusting statistical noise analyzer with interference suppression
12/09/1997US5696518 Antenna device integrally fixed to portable electronic appliance
12/09/1997US5696513 Signal transmitting apparatus
12/09/1997US5696500 Multi-media receiver and system therefor
12/09/1997US5696497 Radio with silent and audible alerts
12/09/1997US5696496 Portable messaging and scheduling device with homebase station
12/09/1997US5696485 Method for charging a transponder
12/09/1997US5696437 Intelligent low battery detection circuit for a paging receiver
12/09/1997US5695885 External battery and photoyoltaic battery charger
12/09/1997CA2112020C Adaptive equalizer
12/09/1997CA2083712C Control apparatus for a mobile radiotelephone
12/09/1997CA2081004C Apparatus and method for reducing harmonic interference generated by a clock signal