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)
06/1985
06/19/1985EP0144449A1 Method and apparatus of modulating digital data and of demodulating
06/18/1985US4524462 System for jointly transmitting high-frequency and low-frequency digital signals over a fiber-optical carrier
06/18/1985US4524448 Variable delay unit for data synchronizer using phase-sensitive counter to vary the delay
06/12/1985EP0143920A2 Receiving device for a high rate bit-serial asynchronous data link
06/12/1985EP0143912A2 Coder for the two-level HDB3 code
06/11/1985US4523192 Data processing network
06/11/1985US4523181 Method and apparatus for producing a binary information for an information transmission
06/11/1985CA1188761A1 Single terminal negative capacitance generator for response time enhancement
06/06/1985WO1985002509A1 Apparatus for correcting frequency-dependent attenuation of the transmitting medium in signal transmission
06/05/1985EP0143699A2 Bus transceiver
06/05/1985EP0143553A1 Methods of and apparatus for digital data conversion
06/05/1985EP0143489A1 Supervisory arrangement for a digital transmission system
06/05/1985EP0143269A2 Process and device for inserting a digial binary narrow-band signal in, or for extracting this narrow-band signal from a time division multiplex signal
06/05/1985EP0143268A2 Process and device for inserting a digital binary narrow-band signal in, or for extracting this norrow-band signal from a time division multiplex signal
06/05/1985EP0143226A2 Receiving device for a high rate bit-serial asynchronous data link
06/05/1985EP0143214A2 Adaptive equalizer
06/04/1985US4521766 For producing a transmission code in response to an input serial binary code
05/1985
05/29/1985EP0142893A1 Arrangement for restoring the L.F. content of a digital signal
05/29/1985EP0142789A2 Radio relay method and apparatus for digital communication
05/29/1985EP0142551A1 Variable bandwidth switching system
05/28/1985US4520489 Decision feedback equalizing apparatus
05/28/1985US4520480 Digital transmission system
05/28/1985US4520346 Method and apparatus for encoding an NRZI digital signal with low DC component
05/23/1985WO1985002284A1 Machine readable markers for cartesian information storage media
05/22/1985EP0142144A2 Fractionally spaced equalization method and equalizer using nyquist-rate coefficient updating
05/22/1985EP0141916A2 Method for inserting a synchronisation pattern
05/22/1985EP0141852A1 Integrated voice/data/control switching system
05/21/1985CA1187618A1 High speed data bus structure and system
05/15/1985EP0141480A2 A communication system of unipolar pulses
05/15/1985EP0141159A2 Interface circuit
05/14/1985US4517552 Method and apparatus for N-to-M encoding
05/14/1985CA1187218A1 Signal burst signal transmission system
05/14/1985CA1187187A1 Method and system for pulse communication
05/09/1985WO1985002075A1 Data converter and line driver for a digital data communication system
05/08/1985EP0140087A1 High rate bit-serial asynchronous data link
05/08/1985EP0140043A2 Decoder for the two-level HDB3 code
05/08/1985EP0139833A2 CMOS transmission circuit
05/07/1985US4516247 Signal receiver which indicates the status of the device connected thereto
05/07/1985US4516245 Digital span transmission circuit
05/07/1985CA1186766A1 Data reading apparatus for data transmission
05/07/1985CA1186763A1 Consecutive identical digit suppression system in a digital communication system
04/1985
04/30/1985US4514854 Discrimination circuit for received data
04/30/1985US4514840 Data transmission systems for full duplex communication
04/30/1985US4514820 Apparatus for generating trapezoidal signals over a single conductor coaxial bus
04/30/1985US4514732 Technique for increasing battery life in remote control transmitters
04/30/1985CA1186378A1 Local orderwire facility for fiber optic communication system
04/24/1985EP0138736A2 Debounce circuit providing synchronously clocked digital signals
04/24/1985EP0138613A2 Method and apparatus for monitoring suitability of a transmission path for transmission of digital data signals
04/24/1985EP0138080A2 Communication system using variable length character code and coding method
04/23/1985US4513427 Data and clock recovery system for data communication controller
04/23/1985CA1186029A1 Automatic correction circuit for received digitally encoded signals
04/17/1985EP0137213A2 Adaptive equalizer for digital signals affected by distorsions with time varying characteristics
04/16/1985US4511993 Arrangement for reading out defined data from a digital switching device with mutually asynchronous control signals for sequential switching of the device and transfer of the data
04/16/1985US4511759 Apparatus for controlling transfers of files between computers
04/16/1985CA1185713A1 Digital data packet transmission system
04/16/1985CA1185671A1 Apparatus for communicating utility usage related information from a utility usage location to a portable utility usage registering device
04/10/1985EP0136663A2 AMI coded signal transmission system
04/09/1985US4510612 System comprising mutually synchronizing first and second active functional units
04/09/1985CA1185331A1 Wave-shaping circuit for digital signal
04/02/1985US4509180 Method and an apparatus for correcting distortion of binary received signals
04/02/1985US4509164 Microprocessor based digital to digital converting dataset
04/02/1985US4508946 Microwave oven with rotary antenna
04/02/1985CA1185024A1 Signalling in pbx systems
04/02/1985CA1185011A1 Information signal reproducing apparatus
03/1985
03/27/1985EP0135057A1 Demodulator for multilevel amplitude modulation system
03/27/1985EP0134817A1 Method of transferring digital signal
03/26/1985US4507794 Filtered Manchester Coded PSK transmission system
03/26/1985US4507793 Digital signal transmission system
03/26/1985US4507747 Procedure for shared-time processing of digital signals and application to a multiplexed self-adapting echo canceler
03/26/1985US4507621 Generating quasi-random sequences in AMI code
03/19/1985US4506252 Ternary data encoding system
03/13/1985EP0134174A1 Method of transmitting messages between a central station and several remote stations
03/13/1985EP0066620B1 Circuit for clock recovery
03/13/1985EP0040217B1 Apparatus for and method of processing data signals
03/12/1985US4504975 System for transmitting digital signals over an optical fiber
03/12/1985US4504974 Opto-electronic repeater
03/12/1985US4504960 Data reading apparatus for data transmission
03/12/1985US4504959 Noise-neutralizing digital interface circuit
03/12/1985US4504958 Equalizer for the correction of digital signals
03/12/1985US4504872 Digital maximum likelihood detector for class IV partial response
03/06/1985EP0133728A2 Data transmission system
03/05/1985US4503547 Electrical data pulse processing
03/05/1985US4503546 Pulse signal transmission system
03/05/1985US4503472 Bipolar time modulated encoder/decoder system
03/05/1985US4503420 Arrangement for encoding and decoding information signals
03/05/1985CA1183619A1 Digital transmitting system
02/1985
02/28/1985WO1985000946A1 Maintenance response signalling arrangement for a digital transmission system
02/28/1985WO1985000945A1 Control signalling arrangement for a digital transmission system
02/28/1985WO1985000941A1 An interruptible voltage-controlled oscillator
02/27/1985EP0133480A2 Method and apparatus for decoding the output signal of a partial-response communication or recording-device channel
02/27/1985EP0133474A2 A data processing system including an infra-red coupled remote data entry device
02/26/1985US4502143 Consecutive identical digit suppression system in a digital communication system
02/26/1985CA1183262A1 System for transmitting digital information
02/26/1985CA1183218A1 Optical data transmission system
02/20/1985EP0133298A1 Method and circuit for compensating echo signals
02/20/1985EP0133279A2 Method for bit rate transformation of digital signals
02/19/1985US4501000 Method of coding binary data
02/19/1985US4500871 Method for coding binary data and a device decoding coded data
02/13/1985EP0132988A2 Digital synthesis technique for pulses having predetermined time and frequency domain characteristics
02/13/1985EP0132481A1 Shift register arrangement and data transmission system comprising such an arrangement
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