Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 25 - Baseband systems
Patents for H04L 25 - Baseband systems (55,083)
06/1987
06/23/1987US4675545 Wave shaping apparatus for eliminating pulse width distortion
06/23/1987CA1223368A1 Ternary data transmission system
06/16/1987EP0225652A2 Automatic retrain method for a full duplex modem having an echo canceller and an equalizer
06/16/1987EP0225587A2 Circuit arrangement for regenerating and synchronising a digital signal
06/16/1987CA1223064A1 Doublet detector for data recording or transmission
06/10/1987EP0225025A2 Data transmission system
06/09/1987US4672635 Circuit arrangement for noise suppression in binary data signals in a digital transmission system
06/09/1987US4672633 Data transmission system
06/09/1987US4672632 Optimized communications system and method employing channel synthesis and phase lock detection
06/09/1987US4672630 Training method of data receiving equipment
06/09/1987US4672587 Integratable, bus-oriented transmission system
06/09/1987US4672363 Frequency modulation coding methods with reduced transition intervals
06/04/1987WO1987003439A1 Cable system for digital information
06/02/1987US4670890 Method of and/or apparatus for encoding and decoding sequential information in data handling systems
06/02/1987US4670797 Method of magnetically recording coded digital video signals and an apparatus therefor
06/02/1987US4670666 MOS transistor circuit for shared precharging of bus lines
05/1987
05/26/1987US4669118 Self-synchronizing descrambler
05/26/1987US4669092 Arrangement for receiving digital data comprising an arrangement for adaptive timing recovery
05/26/1987CA1222291A1 Transmission response measurements
05/21/1987DE3540716A1 Method for equalising linear, time-invariant or slowly time-variant communication transmission channels
05/20/1987EP0222195A1 Method and arrangement for data transmission over a plurality of parallel lines, especially optical fibres
05/20/1987EP0222017A1 Circuit switching devices
05/19/1987CA1222057A1 Dual channel partial response system
05/19/1987CA1222056A1 Method of coding to minimize delay at a communication node
05/12/1987US4665535 Code regenerative system
05/12/1987US4665531 Alternate mark inversion (AMI) receiver
05/12/1987US4665517 Method of coding to minimize delay at a communication node
05/12/1987CA1221749A1 Fractionally spaced equalization using nyquist-rate coefficient updating
05/12/1987CA1221740A1 Premodulation filter for generating in combination with a fm transmitter a generalized tamed frequency signal
05/06/1987EP0220802A2 Serial-to-parallel converter for high-speed bit streams
05/06/1987EP0220705A2 Quadriphase phase modulation system
05/05/1987US4663767 Optical data bus having a statistical access method
05/05/1987US4663766 Method of determining automatically the rate of data signals in a modem
05/05/1987US4663501 Self-synchronizing descrambler
05/05/1987US4663499 Method for transmitting messages between a central station and several distant stations
05/05/1987CA1221420A1 Fast recovery bias circuit
04/1987
04/28/1987US4661965 Timing recovery circuit for manchester coded data
04/28/1987EP0151633A4 An interruptible voltage-controlled oscillator.
04/28/1987CA1221170A1 Line transmission systems
04/22/1987EP0219016A2 Digital transmission system with signal rate conversion
04/21/1987US4660216 Transmission system for the transmission of data signals in a modulation band
04/21/1987CA1220847A1 Digital code reading apparatus and method
04/16/1987DE3535606A1 Regenerator for signals in AMI code
04/15/1987EP0218181A1 Adaptive transversal equalizer
04/15/1987EP0218161A2 Method of analysing and synthesizing binary characters
04/15/1987EP0218121A1 Network for processing large bit width data with an emitter and a multiplicity of receivers
04/15/1987EP0217955A1 Transmitting data processing system.
04/08/1987EP0217609A2 Receiver for digital AMI coded signals
04/08/1987EP0217555A2 Telecommunication switching system
04/08/1987EP0216903A1 Telemetry system for an implantable device
04/08/1987EP0216839A1 Optical signal processing.
04/07/1987US4656661 Switched capacitor coupled line receiver circuit
04/07/1987US4656643 Line interface circuit
04/07/1987CA1220259A1 Integrated scrambler-encoder using pn sequence generator
04/01/1987EP0216214A2 Method for the automatic level adjustment in a local area network, in particular for a multiprocessor arrangement with a bus system of optical fibres, for the purpose of collision detection
04/01/1987EP0216183A2 Decision feedback equalizer with a pattern detector
04/01/1987EP0216141A2 Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
04/01/1987CN85106966A Decision feedback adaptive equalizer acting on zero states following a non-zero state
03/1987
03/31/1987US4654861 Method and device for measuring phase jitter on a transmission channel
03/31/1987US4654653 Digital data communication apparatus
03/31/1987CA1219931A1 Method and apparatus for monitoring suitability of a transmission path for transmission of digital data signals
03/31/1987CA1219916A1 Digital paging system having bit rate switching means and digital paging receiver therefor
03/26/1987DE3532661A1 Signal matching circuit
03/25/1987EP0215086A1 Line transmission systems
03/24/1987US4652942 Method and system for converting binary data using bit-divided encoding
03/24/1987US4652775 Adaptive threshold detector
03/24/1987CA1219645A1 Adaptive digital signal coring circuit
03/19/1987DE3533281A1 Optical fibre transmission system
03/19/1987DE3530546A1 Transmission method for a fast and a slow data stream
03/18/1987EP0091488B1 Bus system
03/17/1987US4651329 Digital decode logic for converting successive binary zero pulses having opposite polarity to a stream of data pulses
03/17/1987US4651328 Arrangement for supervising a CMI-code converter
03/17/1987US4651134 Switched capacitor coupled line receiver circuit
03/17/1987US4651026 Clock recovery circuit
03/17/1987US4650930 Adaptive equalizer
03/17/1987CA1219333A1 Reduction of control bits for adaptive sub-nyquist encoder
03/12/1987WO1987001535A1 Radio data transmission system
03/11/1987EP0213641A2 Delay time adjusting method, circuit, and system
03/11/1987EP0213309A2 Automatic gain control circuit
03/11/1987CN85106498A Waveform shaping apparatus
03/10/1987US4649550 Telemetry scheme with slope modulated signal
03/04/1987EP0212896A2 Current loop arrangements
03/03/1987US4648102 Bus interface device for a data processing system
03/03/1987US4647912 Coupling discriminator and interface adaptor
03/03/1987US4647790 Data signal correction circuit
02/1987
02/26/1987DE3526052A1 Digital communication system with an nB/(n+1)B line code
02/25/1987EP0211438A1 Apparatus for transmitting packets in an asynchronous time network and method for coding the silences
02/24/1987US4646327 Waveform shaping apparatus
02/24/1987US4646323 Method and system for digital data transmission
02/24/1987US4646305 High speed data modem using multilevel encoding
02/24/1987US4646086 Arrangement for data transmission between two mutually rotatable parts
02/19/1987DE3528454A1 Scrambler or descrambler for K<2..>, in particular 16 QAM signal processing
02/17/1987US4644565 Superposed quadrature modulated baseband signal processor
02/17/1987US4644564 Decoding the output signal of a partial-response class-IV communication or recording device channel
02/17/1987US4644563 Data transmission method and system
02/17/1987US4644562 Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
02/17/1987US4644546 Method of digital signal transmission
02/17/1987US4644545 Digital encoding and decoding apparatus
02/12/1987WO1987001006A1 Circuit arrangement to align the pcm groups entering a communication branch point with another
02/12/1987DE3531991A1 Method for transmitting digital data
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