| Patents for H04L 25 - Baseband systems (55,083) |
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| 08/02/1988 | US4761763 Rate adaptation circuit and method for asynchronous data on digital networks |
| 08/02/1988 | US4761635 Method of coding digital information organized in frames using a CMI code, a device for implementing this method and application to servitude information for a high capacity digital network |
| 08/02/1988 | CA1240020A1 Telesignalling method and device for a digital transmission link |
| 08/02/1988 | CA1240013A1 Control signalling arrangement for a digital transmission system |
| 07/27/1988 | EP0275585A1 Method of transmitting n-bit information words, information transmission system for carrying out the method, and encoding device and decoding device for use in the information-transmission system |
| 07/27/1988 | EP0275406A1 Method and circuit for the recovery of the clock or the phase of a synchronous or plesiochronous data signal |
| 07/26/1988 | US4760292 Temperature compensated output buffer |
| 07/20/1988 | EP0274647A1 Method and circuit for the transmission of a lower speed digital signal in a time slot of a higher speed TDM signal |
| 07/19/1988 | US4759040 Digital synchronizing circuit |
| 07/19/1988 | US4759036 Decision-directed control circuit |
| 07/19/1988 | US4759035 Digitally controlled, all rate equalizer |
| 07/14/1988 | WO1988005233A1 Optical communications network |
| 07/14/1988 | WO1988005229A1 Data limiter with current controlled response time |
| 07/12/1988 | US4757499 Method for zero byte time slot interchange |
| 07/06/1988 | EP0273234A2 Data bus system for a serial data bus |
| 07/05/1988 | US4756025 Method and device for data transmission over several parallel lines, in particular optical fibers |
| 07/05/1988 | US4756007 Adaptive communication rate modem |
| 07/05/1988 | US4755988 Data communications switching device having multiple switches operating at plural selectable data rates |
| 07/05/1988 | US4755987 High speed scrambling at lower clock speeds |
| 07/05/1988 | CA1238957A1 Switched capacitor coupled line receiver circuit |
| 07/05/1988 | CA1238956A1 Switched capacitor coupled line receiver circuit |
| 06/30/1988 | WO1988004825A1 Address mark encoding for a record storage medium |
| 06/29/1988 | CN87107858A Method of and system for providing substantially error-free transmitted data |
| 06/28/1988 | US4754481 Expanded partial response processing for analog signal enciphering and the like |
| 06/28/1988 | US4754477 Key telephone system |
| 06/28/1988 | US4754466 Method for chip selection and counting in a digital pulse width modulated integrated circuit |
| 06/28/1988 | US4754457 Digital sequence polarity detection with adaptive synchronization |
| 06/28/1988 | CA1238698A1 Programmable automatic cable equalizer |
| 06/23/1988 | DE3727620A1 Digital signal-matched filter |
| 06/22/1988 | EP0272171A1 Digital signals transmission circuit for a telephone network |
| 06/21/1988 | US4752942 Method and circuitry for extracting clock signal from received biphase modulated signal |
| 06/21/1988 | US4752940 Method and apparatus for transmission of digital data over a line |
| 06/21/1988 | US4752841 Address mark encoding for a record storage medium |
| 06/16/1988 | EP0142551A4 Variable bandwidth switching system. |
| 06/16/1988 | EP0141852A4 Integrated voice/data/control switching system. |
| 06/15/1988 | EP0271196A1 Optical interface |
| 06/09/1988 | DE3640874A1 Circuit arrangement for combining binary signals, divided into two part-signals having in each case half the bit rate at the transmitting end, in the correct bit sequence at the receiving end |
| 06/07/1988 | US4750217 Optical receivers |
| 06/07/1988 | US4750193 Phase-locked data detector |
| 06/07/1988 | US4750179 Selective prevention of bipolar violation detection |
| 06/07/1988 | US4750138 Method of transmitting information, encoding device for use in the method, and decoding device for use in the method |
| 06/07/1988 | CA1237816A1 Detector of predetermined patterns of manchester encoded data |
| 06/07/1988 | CA1237786A1 Adaptive equalizer |
| 06/01/1988 | EP0269481A1 Method and device for transmitting digita data |
| 06/01/1988 | EP0269253A1 RF modem with improved binary transversal filter |
| 05/31/1988 | US4748643 Start bit detecting circuit |
| 05/31/1988 | US4748640 Digital circuit with band limiting characteristics for modem |
| 05/31/1988 | US4748637 Digital subscriber loop termination device |
| 05/31/1988 | US4748346 Driver for differential signal transmission |
| 05/25/1988 | EP0268531A2 Bipolar transistor switching enhancement circuit |
| 05/25/1988 | EP0268205A2 Methods of and system for providing substantially error-free transmitted data |
| 05/24/1988 | US4747112 Decoding method for T1 line format for CCITT 32K bit per second ADPCM clear channel transmission and 64 KBPS clear channel transmission |
| 05/24/1988 | US4747098 Method of encoding data into a frame |
| 05/19/1988 | WO1988003733A1 Process and circuit for adaptive correction of pulsed signals |
| 05/18/1988 | EP0267528A2 Digital data transmission system with adressable repeaters having fault localization devices |
| 05/17/1988 | US4745624 Automatic line buildout |
| 05/17/1988 | US4745623 Adaptive transverse equalizer |
| 05/17/1988 | US4745621 Method of and apparatus for detecting minimum bit number of received data |
| 05/17/1988 | US4745601 Digital service unit with secondary channel diagnostics |
| 05/11/1988 | EP0266919A2 Integrated circuit output buffer |
| 05/11/1988 | EP0266409A1 Apparatus useful in channel equalization adjustment |
| 05/10/1988 | US4744104 Self-synchronizing scrambler |
| 05/10/1988 | US4744096 Clock recovery circuit |
| 05/10/1988 | US4744082 Multiplexer apparatus having nBmB coder |
| 05/10/1988 | CA1236572A1 Machine readable markers for cartesian information storage media |
| 05/10/1988 | CA1236552A1 Telesignalling method and device for a digital transmission link |
| 05/10/1988 | CA1236551A1 Telesignalling device and method whereby data transmitted by a digital link are replaced by messages |
| 05/05/1988 | WO1988003349A1 Radio communication receiver with apparatus for altering bit rate of the receiver |
| 05/05/1988 | WO1988003343A1 Multiplex digital communications system |
| 05/04/1988 | EP0266285A1 Method and apparatus for encoding and decoding binary information |
| 05/04/1988 | EP0265637A2 Pulse shaper |
| 05/04/1988 | EP0265480A1 Method and apparatus for transferring data between two data processing equipments each driven by an independent clock. |
| 05/03/1988 | US4742533 Soft decision digital communication apparatus |
| 05/03/1988 | US4742530 Radio relay method and its apparatus for digital communication |
| 05/03/1988 | US4742251 Precise call progress detector |
| 04/28/1988 | DE3630794C1 Method for exchanging binary characters in accordance with a pattern |
| 04/27/1988 | EP0163685B1 Apparatus for correcting frequency-dependent attenuation of the transmitting medium in signal transmission |
| 04/26/1988 | US4740994 Method and circuit for suppressing sequential "zeroes" data |
| 04/26/1988 | US4740957 Asynchronous addressable electronic key telephone system |
| 04/19/1988 | US4739253 Methods of and system for receiving transmitting oscilloscope signals |
| 04/19/1988 | US4739194 Supergate for high speed transmission of signals |
| 04/13/1988 | EP0263164A1 Multiconfigurable interface circuit |
| 04/12/1988 | US4737969 Spectrally efficient digital modulation method and apparatus |
| 04/12/1988 | US4737952 For use in processing a signal |
| 04/12/1988 | US4737949 Transmission system for digital repeater supervisory code transmission |
| 04/07/1988 | WO1988002585A1 Trellis codes with spectral nulls |
| 04/07/1988 | WO1988002581A1 Adaptive correction of dc error transients |
| 04/05/1988 | US4736464 Method for the additional transmission of information via a digital auxiliary channel, in an optical transmission system |
| 04/05/1988 | US4736424 Data scrambling apparatus |
| 04/05/1988 | US4736391 Threshold control with data receiver |
| 04/05/1988 | US4736389 Technique for synthesizing the modulation of a time varying waveform with a data signal |
| 04/05/1988 | US4736388 Automatic fall back and restore system for data communication |
| 04/05/1988 | US4736385 Transmitter and receiver circuit |
| 04/05/1988 | US4736370 Transmitting data processing system |
| 03/31/1988 | DE3631822A1 Interface |
| 03/30/1988 | EP0261620A2 Circuit arrangement and bus circuit with a large bandwidth, and a component for a broadband switching network |
| 03/29/1988 | US4734920 High speed modem for multiple communication circuits |
| 03/24/1988 | WO1988002171A2 Remote accessible memory devices |
| 03/15/1988 | US4731820 Data transmission system of key telephone system |
| 03/15/1988 | US4731816 Ensemble modem structure for imperfect transmission media |