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)
07/1995
07/28/1995CA2139707A1 Mobile radio communication apparatus adaptable to power supply voltage change
07/27/1995WO1995020304A1 Device for automatically switching between the electroacoustic transducer(s) of a radio receiver and the audio-frequency output of a radiotelephone, and equipment provided therewith
07/27/1995WO1995020276A1 Process for finding the receivability of radio signals in a radio system
07/27/1995WO1995020273A1 Carry case
07/27/1995WO1995020271A1 Mobile telephone extension units
07/27/1995WO1995019723A1 Carrying device
07/27/1995DE4400865A1 Optimising stereo reproduction in FM receiver
07/27/1995DE19500928A1 Adaptor for hand-held radio device
07/27/1995CA2140793A1 Variable filter
07/26/1995EP0664620A2 Method and device for speech transmission in a radio system
07/26/1995EP0664611A1 Synthesizer radio receiver
07/26/1995EP0664187A1 Grinding tape and method of manufacturing the same
07/26/1995EP0555239B1 Controlling clipping in a microwave power amplifier
07/26/1995CN2204077Y Radio paging alarming arrangement
07/26/1995CN1105789A Automatic gain control apparatus
07/25/1995US5437059 Radio transmitting system having back-up radio receiver operable in response to failure of main feed line
07/25/1995US5437051 Broadband tuning circuit for receiving multi-channel signals over a broad frequency range
07/25/1995US5436941 Spread spectrum spectral density techniques
07/25/1995US5436940 Quadrature mirror filter banks and method
07/25/1995US5436935 Process for synchronizing a receiver switching circuit to a received signal containing a pn-code-spread data signal
07/25/1995US5436934 Differential high frequency level detector and data restoration circuit including squelch offset and slicing offset
07/25/1995US5436931 FSK receiver
07/25/1995US5436899 High performance digitally multiplexed transmission system
07/25/1995US5436887 Digital full-duplex transceiver
07/25/1995US5436851 System for data communication
07/25/1995US5436676 Remote control unit code translation
07/25/1995US5436625 Folding electronic device
07/25/1995US5436618 Multi-apparatus consumer electronics system
07/25/1995US5436088 Battery cradle
07/25/1995CA2070291C Automatic data restoral for modems
07/20/1995WO1995019668A1 A method and system for audio information dissemination using various transmission modes
07/20/1995WO1995019663A1 Radio transceiver circuit and method
07/20/1995WO1995019598A1 Radio frequency control system
07/20/1995WO1995019574A1 Antenna amplifier for receiving frequencies
07/20/1995WO1995015064A3 Low-power frequency-hopped spread spectrum acknowledgement paging system
07/20/1995DE4400668A1 TV receiver, VTR and similar appts. remote control unit
07/19/1995EP0663778A2 Image coding method and apparatus therefor
07/19/1995EP0663749A1 Hands free equipment for a mobile telephone
07/19/1995EP0663741A2 Adaptive digital audio encoding system
07/19/1995EP0663740A2 Apparatus for adaptively encoding input digital audio signals from a plurality of channels
07/19/1995EP0663739A1 Digital signal encoding device, its decoding device, and its recording medium
07/19/1995EP0663735A2 Synthesis subband filter
07/19/1995EP0663734A1 Handheld transceiver
07/19/1995EP0663733A1 Remote control for an electrically operated remote controlled apparatus
07/19/1995EP0663732A2 Circuit and method for determining the type of noise or interference in a FM modulated broadcast signal receiver
07/19/1995EP0663724A2 Automatic antenna tuning method
07/19/1995EP0663120A1 Squelch detector
07/19/1995EP0497801B1 A phase locked loop for producing a reference carrier for a coherent detector
07/19/1995EP0444147B1 Gallium arsenide antenna switch
07/19/1995CN1105510A Method and apparatus for coherent communication in a spread-spectrum communication system
07/19/1995CN1105501A Battery compartment door and latch having longitudinal snaps
07/18/1995US5434893 Component for a differential transmitter-receiver of signals with direct sequence spread spectrum and the corresponding transmitter-receiver
07/18/1995US5434889 Receiver comprising an arrangement for estimating a frequency deviation
07/18/1995US5434849 Duplex modem for processing data needed for cancelling far-end echo canceller
07/18/1995US5434691 Communications system having optical transmission line switching system
07/18/1995US5434579 Inverted F antenna with non-contact feeding
07/18/1995US5434572 System and method for initiating communications between a controller and a selected subset of multiple transponders in a common RF field
07/18/1995CA2058419C Full-duplex, sub-band spread spectrum communications system
07/18/1995CA2052253C Telephone network speech signal enhancement
07/13/1995WO1995019097A1 Vehicular communications system
07/13/1995WO1995019092A1 Consumer interface for a digital television system
07/13/1995WO1995019091A1 A digital television system channel guide having a limited lifetime
07/13/1995WO1995019084A1 Clear channel selection system for a cordless telephone
07/13/1995WO1995019074A2 High-frequency wideband tuner
07/13/1995WO1995019073A2 Receiver having an adjustable bandwidth filter
07/13/1995WO1995019069A1 Power adapter with integral radio frequency port
07/13/1995WO1995019066A1 Waste energy control management for power amplifier
07/13/1995WO1995017058A3 Local communication system including means for displaying messages
07/13/1995WO1995017057A3 Local communication system including means for dividing messages into display field portions
07/13/1995WO1995017056A3 Local communication system including means for time limiting of message displays
07/13/1995CA2157183A1 Waste energy control management for power amplifier
07/12/1995EP0662753A1 Tuning method for automatic antenna couplers
07/12/1995EP0662270A1 Method for synchronising transmitter frequencies in common wave digital audio broadcast
07/12/1995EP0608251B1 Electrical connector module for multi media, broadband and baseband signal cables
07/12/1995EP0580617B1 Radio receiver, especially vehicle radio
07/11/1995US5432855 Stereo and dual audio signal identifying system
07/11/1995US5432854 Stereo FM receiver, noise control circuit therefor
07/11/1995US5432825 Enabling code for radiotransmission of data
07/11/1995US5432816 System and method of robust sequence estimation in the presence of channel mismatch conditions
07/11/1995US5432815 Data modulator-demodulator apparatus of a spread spectrum communication system
07/11/1995US5432814 Spread spectrum communication system
07/11/1995US5432813 Parallel processing based digital matched filter and error detector for a digital demodulator
07/11/1995US5432779 Time division multiplex transmitting/receiving system
07/11/1995US5432676 Electronic apparatus case with wiring member embedded in a molded plastic hinge
07/11/1995US5432562 Television signal reception
07/11/1995US5432522 Cross polarization interference compensating device comprising decision feedback cross polarization interference cancellers
07/11/1995US5432501 Power supply source control apparatus for a satellite broadcast receiver
07/11/1995US5432473 Dual mode amplifier with bias control
07/11/1995CA2042950C Automatic power control circuit for use with a radio telecommunication apparatus
07/11/1995CA2028966C Distortion canceling fiber optic transmission system
07/06/1995WO1995018523A1 Method and apparatus for encoding multibit coded digital sound through subtracting adaptive dither, inserting buried channel bits and filtering, and encoding and decoding apparatus for use with this method
07/06/1995WO1995018491A2 Data communication device
07/06/1995WO1995018490A1 Communications device
07/06/1995WO1995018486A1 A wireless digital synchronized diversity receiver
07/06/1995DE4447142A1 Sendereferenzoszillator eines VSAT für Satellitenkommunikation Transmission reference oscillator of a VSAT satellite communications
07/05/1995EP0661873A1 A video-signal transmitter-receiver and a signal transmission apparatus utilizing the same
07/05/1995EP0661860A2 Background noise compensation in a telephone network
07/05/1995EP0661835A2 Digital radio communication system
07/05/1995EP0661831A2 DS/CDMA Receiver using parallel-operating multi-purpose correlators
07/05/1995EP0661830A2 Synchronization acquisition and tracking for a direct sequence spread spectrum receiver