Patents for H04L 25 - Baseband systems (55,083)
01/1994
01/19/1994EP0374214B1 Variable rate rectangular matched filter
01/19/1994CN1081044A Method and apparatus for partial response demodulation
01/19/1994CN1081043A Method and apparatus for opr carrier recovery
01/18/1994US5280533 Coding method for skewed transition correction in parallel asynchronous communication systems
01/18/1994US5280500 Method and apparatus for multilevel encoding for a local area network
01/18/1994US5280485 Coding method for skewed transition detection in parallel asynchronous communication system
01/12/1994EP0577901A1 Adaptive equalization system and method
01/12/1994EP0577767A1 Data communication network providing power and message information
01/12/1994EP0577729A1 Clamping receiver and transmission protocol
01/11/1994US5278992 Method and apparatus for controlling transmission power of a remote unit communicating with a base unit over a common frequency channel
01/11/1994US5278906 System for encoding data presented with a first coding device and for decoding encoded data with a second coding device, and coding device for use in the system
01/11/1994US5278902 In a digital system for communicating binary information
01/11/1994US5278871 Method and apparatus for estimating signal weighting parameters in a receiver
01/11/1994US5278868 Receiver for quadraphase modulation signals
01/11/1994US5278827 Variable data rate channels for digital networks
01/06/1994WO1994000924A1 A method and an arrangement of estimating transmitted symbols at a receiver in digital signal transmission
01/05/1994EP0577301A1 Digital receive line filter circuit with data operated squelch
01/05/1994EP0577212A1 Adaptive viterbi detector
01/05/1994EP0576919A1 Method and apparatus for regenerating a binary signal
01/05/1994EP0576442A1 Reception comparator
01/05/1994DE4220778A1 Auxiliary switch condition contactless monitoring circuit - has AC source for de-oxidation of contact and condition registration via potential divider opto-coupled to digital signal output unit
01/04/1994US5276859 Accelerated token ring network
01/04/1994US5276716 Bi-phase decoder phase-lock loop in CMOS
01/04/1994US5276708 Coding method for reducing the D.C. component in the data stream of a digital signal
01/04/1994US5276688 Circuit arrangement for bit rate adjustment
12/1993
12/30/1993CA2099302A1 Method and apparatus for sample-data receiver squelch
12/29/1993EP0576359A1 Method and apparatus for decision feedback equalisation for the block transmission of information symbols
12/29/1993EP0576100A1 Interference-resistant radio-frequency identification system with large detection distance
12/28/1993US5274837 Trunked radio repeater system with multigroup calling feature
12/28/1993US5274680 Device for the transmission of synchronous information by an asynchronous network, notably an ATM network
12/28/1993US5274679 Hardware arrangement for specifying data format in asynchronous transmission
12/28/1993US5274674 Method of controlling a threshold decoder for a signal having several levels and being affected by echoes, and television receiver provided with such a decoder
12/28/1993US5274673 Optical bus transmission method and transmitting-side encoder and receiving-side decoder therefor
12/28/1993US5274670 Method of equalization in digital mobile communication with improved tracking ability
12/28/1993US5274669 Signal equalizing method employing test sequences
12/28/1993US5274629 Method for the broadcasting of digital data, notably for radio broadcasting at high bit rate towards mobile receivers, with time-frequency interlacing and coherent demodulation
12/28/1993US5274490 Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver
12/23/1993WO1993026110A1 Dc tracking circuit for ginomy data slicer
12/23/1993WO1993026106A1 Maximum likelihood sequence estimating device and method therefor
12/23/1993DE4219987A1 Serial data stream decoding pref. for personal alarm systems - involves checks on durations and logic values of pauses before and after reception of preamble binary sequence.
12/23/1993CA2113919A1 Maximum likelihood sequence estimator and maximum likelihood sequence estimation method
12/22/1993EP0575175A1 Detection system
12/22/1993EP0575059A1 Digital data recovery
12/22/1993EP0575058A1 Digital jitter correction method and signal preconditioner
12/22/1993EP0575000A1 Arrangement for estimating data from a noisy digital data signal and receiver comprising such an arrangement
12/22/1993EP0326566B1 Adaptive correction of dc error transients
12/21/1993US5272727 Adaptive maximum likelihood sequence estimator using channel estimators of respective order of impulse response
12/21/1993US5272726 Blind type sequence estimator for use in communications system
12/21/1993US5272723 Waveform equalizer using a neural network
12/21/1993US5272722 Low level serial transceiver
12/21/1993US5272706 In a viterbi decoder
12/21/1993US5272694 Synchronization of terminal stations in a multirate half-duplex tree-structured network
12/21/1993US5272558 Two level fiber optic communication from three-value electronic signal source
12/21/1993US5272381 Common mode filtered magnetic connector
12/15/1993EP0574329A1 Receiver using oversampling to remove noise spikes
12/15/1993EP0574223A1 Adaptive detection method and detector for quantized signals
12/15/1993EP0574180A2 Balanced driver circuit for eliminating inductive noise
12/15/1993EP0573807A2 Zero power transmission line terminator
12/15/1993EP0573621A1 Novel device and method for precoding
12/14/1993US5271042 Soft decision decoding with channel equalization
12/14/1993US5271041 Method and apparatus for QPR carrier recovery
12/09/1993WO1993025002A1 Dynamically selectable multimode pulse width modulation system
12/09/1993WO1993024997A1 Digital signal receiver
12/09/1993DE4223639C1 Transmission system for 2 independent digital signals - uses encoder supplied with digital signals at pulse channel and signal channel respectively
12/09/1993DE4222279C1 Signal transmission arrangement between integrated switching circuits - has signal ports of transmitting and receiving devices connected by conductor with protection element between signal port and second supply potential
12/09/1993CA2113898A1 Digital signal receiving device
12/08/1993EP0573359A1 Treatment and precorrection device of an audio frequency signal before its amplification in an amplifier chain of an amplitude modulated emitter
12/07/1993US5268937 Method and system for digital transmission of serial data
12/07/1993US5268935 Synchronous digital signal to asynchronous digital signal desynchronizer
12/07/1993US5268930 Decision feedback equalizer
12/07/1993US5268929 Method of effectively normalizing an automatic equalizer in multipoint data communications system and arrangement thereof
12/07/1993US5268907 Communication apparatus with fault tolerance
12/07/1993US5268676 Computer-monitor extended range communications link
12/07/1993CA1325044C Multipoint data modem communication system
12/06/1993CA2097555A1 Device for the processing and pre-correction of an audio signal before it is amplified in an amplification system of a transmitter with amplitude modulation
12/02/1993DE4234628C1 Binary to duo-binary code converter for television digital audio signal - uses digital circuits comprising inverters and logic gates to provide three output logic conditions
12/01/1993EP0571919A1 Demodulating apparatus using transversal equalizer and decision feedback type equalizer
12/01/1993EP0544875A4 Apparatus for and method of adjusting signal points, equalizer gains and the like
12/01/1993EP0335946B1 High-speed digital data communication system
11/1993
11/30/1993US5267316 Synchronous system for parallel data scrambling
11/30/1993US5267300 High speed digital data transmission over switched voice network
11/30/1993US5267270 Digital transmission circuit
11/30/1993US5267269 System and method employing predetermined waveforms for transmit equalization
11/30/1993US5267266 Fast converging adaptive equalizer using pilot adaptive filters
11/30/1993US5267265 Decision feedback equalizer with expansion and decision circuit
11/30/1993US5267264 Synchronization and matching method for a binary baseband transmission system
11/30/1993US5267251 Line interface for a data transmission network
11/30/1993US5267244 Method and an apparatus for establishing the functional capabilities for wireless communications between a base unit and a remote unit
11/30/1993US5267240 Frame-group transmission and reception for parallel/serial buses
11/30/1993US5267231 Digital communication channel interface
11/30/1993US5267068 Signal transmission performance evaluation device in an optical communication apparatus
11/30/1993US5266847 High speed data transceiver
11/25/1993WO1993023941A1 Digital pulse detector
11/23/1993US5265151 Method of improving modem performance by controlling transmitted power of modem, and modem implementing the same
11/23/1993US5265127 Non-linear encoder and decoder for information transmission through non-linear channels
11/23/1993US5265125 Signal detection apparatus for detecting digital information from PCM signal
11/23/1993US5265124 Integrated multi-port repeater having shared resources
11/23/1993US5265123 Expandable repeater
11/23/1993US5265105 Decoding circuit for inhibiting error propagation
11/23/1993US5264744 Complementary signal transmission circuit with impedance matching circuitry