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)
02/1995
02/01/1995EP0637140A2 System configuration method for audio-video apparatus with digital bus interface
02/01/1995EP0637139A1 Method for removing interference wave, receiver and communication system which use the method
02/01/1995EP0637131A1 Microwave amplifier having a variable-impedance impedance matching circuit
02/01/1995EP0637130A2 Receiver and method of receiving
02/01/1995EP0636268A1 Apparatus, method, and system for compressing a digital input signal in more than one compression mode
02/01/1995EP0636242A1 Apparatus and method for voice band reduction
02/01/1995EP0554290B1 Method of detecting errors in the transmission of frequency-coded digital signals
02/01/1995CN2188825Y Bus type wired intercommunicating apparatus
02/01/1995CN2188824Y Frequency-modulated auxiliary channel speech communication stock
02/01/1995CN2188823Y Communication branching device
02/01/1995CA2129271A1 Radio phone apparatus having compact cordless extension unit
01/1995
01/31/1995US5386590 Apparatus and method for increasing data transmission rate over wireless communication systems using spectral shaping
01/31/1995US5386587 Satellite broadcasting receiving system with reception level indicator using control signal from receiver
01/31/1995US5386435 Frequency hopping spread spectrum data communications system
01/31/1995US5386424 Apparatus and method for transmitting information between dual redundant components utilizing four signal paths
01/31/1995US5386251 System for operating an electronic device
01/31/1995US5386203 Antenna coupler
01/31/1995CA1334208C Apparatus for processing stereo signals and universal am stereo receivers incorporating such apparatus
01/30/1995CA2114341A1 Receiver with an agc circuit capable of expanding a dynamic range
01/26/1995WO1995002930A1 Computationally efficient adaptive bit allocation for coding method and apparatus
01/26/1995WO1995002929A1 Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions
01/26/1995WO1995002928A1 Hybrid adaptive allocation for audio encoder and decoder
01/26/1995WO1995002927A1 Method and apparatus for controlling transceiver operations in a radio communications system
01/26/1995WO1995002926A1 Transceiver for transmitting and receiving stair-stepped sinusoidal waveforms
01/26/1995WO1995002925A1 High-efficiency encoding method, high-efficiency decoding method, high-efficiency encoding device, high-efficiency decoding device, high-efficiency encoding/decoding system and recording media
01/26/1995DE4426358A1 Remote control transmitter
01/26/1995DE4409128C1 Transcoding device with transcoding cells for data compression or expansion
01/26/1995DE4324304A1 Method for suppressing reception interference in an FM receiver
01/25/1995EP0635963A2 Portable telephone set for use with IC card
01/25/1995EP0635936A2 Communication system using time-multiplex signals
01/25/1995EP0635935A1 Booster and burst transmission apparatus using the same
01/25/1995EP0635898A1 Extra antenna element
01/25/1995EP0635177A1 Method of transmitting and/or storing digitized data-reduced audio signals.
01/25/1995EP0624275A4 Method and system for the arrangement of vocoder data for the masking of transmission channel induced errors.
01/25/1995EP0572639A4 Distribution system for communication services.
01/25/1995CN2188263Y Loudspeaker telephone receiver fixing device for wireless intercom in car
01/25/1995CN2188262Y Electromagnetic radiation protector for hand telephone set
01/25/1995CN1097910A Radio receiver-transmitter apparatus
01/25/1995CN1097909A Waterproof type unit casing
01/24/1995US5384811 Method for the transmission of a signal
01/24/1995US5384793 Fading and random pattern error protection method for dynamic bit allocation sub-band coding
01/24/1995US5384603 Video signal splitter with DC short circuit protection
01/24/1995US5384567 Combination parallel/serial execution of sequential algorithm for data compression/decompression
01/24/1995US5384564 Battery saving arrangement for selectively addressable, portable receivers
01/24/1995US5384552 Clock recovery circuit for extracting clock information from a received baseband signal
01/19/1995WO1995002294A1 Distributed time synchronization system and method
01/19/1995WO1995002288A1 Reduction of background noise for speech enhancement
01/19/1995WO1995002285A1 Surface acoustic wave device for a differential phase-shift direct-sequence spread-spectrum signal receiver
01/19/1995WO1995002284A1 Device and antenna for cordless radio communication
01/19/1995WO1995002240A1 A fixed bit rate speech encoder/decoder
01/19/1995WO1994026049A3 Wireless data transceiver
01/19/1995DE4323144A1 Wireless information transmission system
01/19/1995DE4322992A1 Transmission and/or reception system with optimised polarisation conversion
01/19/1995DE4321917A1 Remote control transmitter
01/19/1995DE4321899A1 Device for operating a telephone
01/19/1995CA2166723A1 A fixed bit rate speech encoder/decoder
01/19/1995CA2143433A1 Component for a direct sequence spread spectrum signal differential transceiver or receiver and the corresponding transceiver
01/18/1995EP0634891A1 Transceiver circuit module having electromagnetically isolated transmitting and receiving circuit sections
01/18/1995EP0634855A1 Automatic frequency control for direct-conversion FSK receiver
01/18/1995EP0634845A2 Noise burst detection in an ADPCM decoder
01/18/1995EP0634843A2 Equalisation arrangement
01/18/1995EP0634842A2 Method and apparatus for disturbance resistant bidirectional information transmission over power distribution networks
01/18/1995EP0634841A2 Smooth spectrum spreading with a small spreading factor
01/18/1995EP0634729A2 Device for date exchange
01/18/1995EP0634308A1 Device for supporting a handheld radio telephone
01/18/1995EP0634057A1 Radio circuit including antenna assembly
01/18/1995EP0568532B1 Process for transmitting digitised, block-coded audio signals using scale factors
01/18/1995CN1097538A Current supply circuit for a consumer electronics apparatus
01/17/1995USRE34831 Communication system
01/17/1995US5383224 Cross polarization interference canceller
01/17/1995US5383220 Data demodulator of a receiving apparatus for spread spectrum communication
01/17/1995US5383202 Simplified method of attenuation of logarithmically coded digital signals
01/17/1995US5383164 Adaptive system for broadband multisignal discrimination in a channel with reverberation
01/17/1995US5383091 Grip and protective casing for cellular telephone
01/17/1995US5382982 Television receiver with multiple inputs and outputs for automatically switching between inputs
01/17/1995US5382952 Transponder for proximity identification system
01/17/1995US5382924 Continuous phase frequency shift keying modulator
01/17/1995US5381684 Detachable apparatus for automotive audio equipment
01/17/1995CA2057013C Synthesized selective call receiver having variable characteristics
01/17/1995CA2024594C Transmission power control circuit
01/12/1995WO1995001699A1 Electronic device for controlling application of a charging current thereto and associated method therefor
01/12/1995WO1995001697A1 Method and apparatus for reducing power consumption in cellular telephones and like receiving devices
01/12/1995WO1995001692A1 Electronic device having internal charge regulator
01/12/1995WO1995001680A1 Digital signal encoding device, its decoding device, and its recording medium
01/12/1995WO1995001677A1 Method and apparatus for encoding and decoding compressed data in data communication
01/12/1995WO1995001675A1 Expanded microcomputer system for controlling radio frequency interference
01/12/1995WO1995001674A1 Radio receiver
01/12/1995WO1995001673A1 Filter windows for fourier transform signal compression
01/12/1995WO1995001634A1 Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals
01/12/1995WO1995001633A1 Method and apparatus for encoding digital signals, method and apparatus for decoding the coded signals, and medium for recording the coded signals
01/12/1995DE4423582A1 Zellularfunksystem nach dem Frequenzsprungverfahren Cellular radio system in accordance with the frequency hopping
01/12/1995DE4327334C1 Chip card
01/12/1995DE4321882A1 Hand-held radio telephone
01/12/1995CA2142880A1 Expanded microcomputer system for controlling radio frequency interference
01/11/1995EP0633677A2 CDMA Receiver with interference and phase variation canceller
01/11/1995EP0633676A2 Code division multiple access communication system
01/11/1995EP0633674A2 Radio-transceiver with means for reducing interference
01/11/1995EP0633668A2 Data compression apparatus
01/11/1995EP0633661A1 Remote control systems
01/11/1995EP0633658A2 Voice activated transmission coupled AGC circuit