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)
03/1983
03/23/1983EP0074656A2 Method and apparatus for encoding a binary digital information signal
03/23/1983EP0074587A2 Frequency-independent, self-clocking encoding technique and apparatus for digital communications
03/17/1983WO1983000967A1 Frequency-independent, self-clocking encoding technique and apparatus for digital communications
03/15/1983US4377006 IR Remote control system
03/15/1983CA1143028A1 Industrial communications network
03/09/1983EP0073400A1 Regenerator for digital signals with quantized feedback
03/08/1983US4376309 Method and apparatus for signal-eye tracking in digital transmission systems
03/08/1983CA1142606A1 Apparatus and method for replacement of a parallel, computer-to-peripheral wire link with a serial optical link
03/02/1983EP0073164A2 Digital transmitter-receiver system with optical transmission and with variable speed
03/02/1983EP0072857A1 Data communication system.
03/01/1983US4375692 Least squares lattice decision feedback equalizer
02/1983
02/22/1983US4375037 Receiving circuit
02/16/1983EP0072290A2 Optical threshold receiver for a variable-speed digital transmission system
02/16/1983EP0071979A2 Signal receiving circuit for optical communication
02/16/1983EP0071896A1 High frequency coil system for a nuclear resonance imaging apparatus
02/16/1983EP0071747A1 Self-pacing serial keyboard interface for data processing system
02/16/1983EP0071680A1 Data recording or transmission system using run length limited coding
02/15/1983US4374426 Digital equalizer for high speed communication channels
02/15/1983US4374305 Arrangement for regenerating start-stop signals and dial pulses
02/15/1983CA1141492A1 Data transmission process and device applying said process
02/15/1983CA1141452A1 Asynchronous data receiver
02/14/1983EP0066620A4 Circuit for clock recovery.
02/09/1983EP0071325A2 Method of and apparatus for demultiplexing a composite signal containing a plurality of data streams
02/08/1983US4373154 Data encoding and/or decoding
02/08/1983US4373152 Binary to one out of four converter
02/08/1983CA1140999A1 Dc free encoding for data transmission
02/08/1983CA1140998A1 Dc free encoding for data transmission including limited look-ahead means
01/1983
01/26/1983EP0070387A2 Method and apparatus for generating a noiseless sliding block code for a (1,7) channel with rate 2/3
01/25/1983US4370749 Phase noise correction circuit for a data transmission system
01/25/1983US4370745 Fail-safe transmission system
01/18/1983US4369523 Remote control system of an optical repeater
01/18/1983US4369516 Self-clocking data transmission system
01/12/1983EP0069183A1 Method and device for transmitting logic signals between micro chips
01/05/1983EP0068977A1 Method of transmitting messages between autonomous transceiver modules having independent clocks and internal synchronisation means
01/04/1983US4367495 Method and apparatus for magnetic recording and reproduction of digital signal
01/04/1983US4367415 Pulse generator circuit
12/1982
12/28/1982US4366478 Signal transmitting and receiving apparatus
12/23/1982WO1982004513A1 Data operated squelch
12/23/1982WO1982004512A1 Signal booster for digital data transmision through transmission lines
12/22/1982EP0067378A2 Constrained adaptive equalizer
12/22/1982EP0067310A2 Bisynchronous protocol communication circuit
12/21/1982CA1138071A1 Digital data communication system
12/15/1982EP0067027A1 Digital repeater circuit
12/15/1982EP0066839A1 A digital burst signal transmission system
12/15/1982EP0066796A1 Control circuit for semiconductor element with control electrode
12/15/1982EP0066620A1 Circuit for clock recovery.
12/14/1982US4363977 Device for discriminating between two values of a signal with DC offset compensation
12/14/1982CA1137581A1 Low-frequency supplementary information transmitting arrangement for a digital data transmission system
12/14/1982CA1137579A1 Transmission system for the transmission of data pulses
12/14/1982CA1137571A1 Method of demodulating a quadphase coded data signal and receiver for carrying out the method
12/08/1982EP0066512A1 Binary data coding method and its application to a magnetic tape transfer system for a digital video signal
12/08/1982EP0066006A2 Arrangement for compensating crosstalk and/or echoes
12/07/1982US4363002 Clock recovery apparatus for phase shift keyed encoded data
12/07/1982CA1137177A1 Method for reducing phase noise at the receiving end of a data transmission link
12/07/1982CA1137176A1 Method for compensating phase noise at the receiving end of a data transmission link
12/01/1982EP0065849A1 Apparatus for code conversion of binary to multi-level signals
12/01/1982EP0065819A1 Process for making chlorine dioxide
12/01/1982EP0065596A2 Signal decoder
11/1982
11/30/1982US4361876 Microcomputer with logic for selectively disabling serial communications
11/30/1982US4361817 Bi-phase modulator/demodulator
11/30/1982CA1136726A1 Testing system for data transmission paths
11/23/1982US4360926 Digital phase-locked loop
11/23/1982CA1136281A1 Circuit for use either as a serial-parallel converter and multiplexer or a parallel-serial converter and demultiplexer in digital transmission systems
11/23/1982CA1136279A1 Method and means for encoding and decoding digital data
11/23/1982CA1136227A1 Coaxial cable switching circuit
11/17/1982EP0064791A1 Method of transmitting an audio signal via a transmission channel
11/17/1982EP0064574A2 Arrangement for reading unambiguous information from a sequential digital system by means of mutual asynchronous control signals for relaying the sequential logic system and for receiving the information
11/16/1982EP0053630A4 Wideband transceiver with emi suppression.
11/10/1982EP0064406A1 Encoding binary data
11/10/1982EP0064201A1 Method for the equalization of a data signal
11/10/1982EP0064097A2 Method for digital input signal conversion for optical light guide transmission systems
11/09/1982US4358852 Method of modulation and demodulation of data and apparatus for carrying out the same
11/09/1982US4358846 Serial data correlator/code translator
11/09/1982US4358790 Electrical data pulse slicing
11/09/1982CA1135363A1 Noise tolerant multiplex system
11/08/1982EP0053629A4 Voiceband data set.
11/03/1982EP0063886A2 A method of and a system for pulse communication
11/03/1982EP0063638A2 Digital telecommunication system
11/02/1982CA1134943A1 High density bias linearized magnetic recording system utilizing nyquist band-width partial response transmission
11/02/1982CA1134915A1 Noise assessment of pcm regenerators
10/1982
10/27/1982EP0063443A2 A digital waveform conditioning circuit
10/26/1982US4356410 Pulse transmission and repetition circuit
10/26/1982CA1134461A1 Waveform correction circuit
10/26/1982CA1134459A1 Synchronization of a data communication receiver with a received signal
10/26/1982CA1134447A1 Data transmission system
10/20/1982EP0062945A1 Device for interrogating and correcting a serial data signal
10/20/1982EP0062922A2 Burst signal transmission system
10/19/1982US4355423 Translator system for converting unipolar fiber optic signals to bipolar signals utilizing Manchester coding
10/19/1982US4355400 Transmitting amplifier for a remote fed intermediate regenerator
10/19/1982US4355398 Real time clock recovery circuit
10/19/1982US4355397 Full duplex communication system for voice grade channels
10/19/1982US4355388 Microprogrammable TDMA terminal controller
10/19/1982US4355237 High speed AC/DC coupler
10/19/1982CA1134046A1 Circuit for converting binary digital signals into pseudoternary a.c. pulses
10/06/1982EP0061764A1 Transmission system of a class IV partial response code
10/06/1982EP0061524A1 Method for the bidirectional transmission of binary data signals on a signal line closed on both sides by a transformer
10/05/1982US4353129 Digital data transmission system
10/05/1982CA1133089A1 Data transmission method
09/1982
09/28/1982US4352190 Device for automatic equalization of electrical data transmission channels
09/28/1982US4352182 Method of and device for testing the quality of digital speech-transmission equipment
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