Patents for H04L 25 - Baseband systems (55,083)
04/1997
04/15/1997US5621774 Method and apparatus for synchronizing parallel data transfer
04/15/1997US5621765 Detector of the presence of a transmission in a modem
04/15/1997US5621758 PWM Communication system
04/15/1997US5621344 Circuit arrangement for coupling a first electric signal into a second electric signal
04/13/1997CA2187813A1 Low rate telemetry channel
04/12/1997CA2187660A1 Method for transmission line impulse response equalisation and a device to perform this method
04/11/1997CA2184530A1 Apparatus for high-speed simultaneous voice/data communications
04/10/1997WO1997013348A2 Block coding for digital video transmission
04/10/1997WO1997013347A2 Transition-controlled digital encoding and signal transmission system
04/09/1997EP0767545A1 LAN equalizer
04/09/1997EP0767543A2 Code division multiplex communication with interference suppression
04/09/1997CN1147321A Direct sequence CDMA coherent upline detector
04/09/1997CN1147320A Bad frame detection
04/09/1997CN1147187A Control signal detection method with calibration error and subscriber unit therewith
04/08/1997US5619686 Source synchronized data transmission circuit
04/08/1997US5619536 Digital superheterodyne receiver and baseband filter method used therein
04/08/1997US5619534 Method and apparatus for reducing precoding loss when using a post-comb filtering approach to reduce co-channel interference in high definition television transmission
04/08/1997US5619533 Channel-independent equalizer device
04/08/1997US5619524 Method of estimating transmission rate in a receiver
04/08/1997US5619503 Cellular/satellite communications system with improved frequency re-use
04/08/1997US5619167 Maximum likelihood decoding coherent detection method
04/03/1997WO1997012466A1 Apparatus and method for digital information transfer
04/03/1997WO1997012465A1 Communications method and apparatus for digital information
04/03/1997WO1997012464A1 Digital communications modulation method and apparatus
04/03/1997WO1997009789A3 Transmitter and receiver apparatus, method for transmitting and method for receiving and record carrier obtained by the method or the transmitter apparatus
04/03/1997WO1997002675A3 Cdma modem
04/02/1997EP0766393A2 PPM demodulation device
04/02/1997EP0766390A2 Time domain filter for a communication channel
04/02/1997EP0765548A1 A system and method for equalization of forward and reverse channels of a communications highway network system
04/02/1997EP0765544A1 Recording medium, digital modulation/demodulation apparatus and digital modulation/demodulation method
04/01/1997US5617450 Digital subscriber loop interface unit
04/01/1997US5617282 Data communication system
03/1997
03/27/1997WO1997011544A1 Apparatus and method for noise-predictive maximum-likelihood (npml) detection
03/27/1997DE19549333A1 Digital signal recovery or noise reduction method
03/26/1997EP0765058A1 Data receiving apparatus
03/26/1997CN1146267A Carrier recovery system for vestigial sideband signal
03/26/1997CN1146101A Data scrambling method, data scrambling apparatus, data descrambling method, and data descrambling apparatus
03/25/1997US5615297 Transmission system for coded speech signals and/or voiceband data
03/25/1997US5615233 Method for channel estimation using individual adaptation
03/25/1997US5615231 Fast automatic gain control
03/25/1997US5615229 Short range inductively coupled communication system employing time variant modulation
03/25/1997US5615228 Apparatus and method to decode a pulse width modulated serial data stream
03/25/1997US5615223 PPM decoder utilizing drop-out location information
03/25/1997US5615208 Kalman filter for channel impulse-response adaption in receivers for TDMA mobile radio systems
03/25/1997US5614901 Method and apparatus for providing data stream for cost effective transmission links
03/25/1997US5614873 Electronic circuit
03/20/1997WO1997010664A1 Adaptive multimode equaliser
03/20/1997WO1997010553A1 Device and method for adaptive narrowband interference suppresson in multiple-access communication
03/20/1997DE19534693A1 Subscriber synchronisation system especially for asynchronous serial by bit data transmission
03/19/1997EP0763918A2 Method and circuit for generating a channel-coded binary signal
03/19/1997EP0763917A2 Line driver with pulse shaper
03/19/1997EP0763916A2 Receiver circuit with constant input impedance
03/19/1997EP0763914A2 Method and arrangement for accommodating the transmission bit rate of a data multiplex device working according to the asynchronous transfer mode
03/19/1997EP0763902A1 Methods and apparatus for performing rate determination based on the growth of a path metric in a Viterbi decoder
03/19/1997EP0763867A1 Device for signal transmission over triplate lines
03/19/1997EP0763298A1 Vehicle communications network transceiver, ground translation circuit therefor
03/19/1997EP0763286A1 Diversity receiver for signals with multipath time dispersion
03/19/1997EP0763279A1 High speed transport system
03/19/1997EP0763239A1 Recording medium, data transmission method and apparatus, and data reproduction method and apparatus
03/19/1997EP0701463B1 Method and apparatus for communicating data between medical devices to improve detectability of errors
03/19/1997CN1145565A Apparatus and method for combining high bandwidth and low bandwidth data transfer
03/19/1997CN1145558A Device for interfacing between communications media in home systems network
03/18/1997US5613077 Method and circuit for communication between a module and a bus controller in a wafer-scale integrated circuit system
03/18/1997US5612978 Method and apparatus for real-time adaptive interference cancellation in dynamic environments
03/18/1997US5612966 Automatic data transmission rate detection circuit
03/18/1997US5612956 Reformatting of variable rate data for fixed rate communication
03/18/1997US5612810 Optical receiving apparatus
03/18/1997US5612694 Encoding data
03/18/1997CA2071551C Apparatus and method of dc offset correction for a receiver
03/13/1997WO1997009811A1 Low jitter low power single ended driver
03/13/1997WO1997009789A2 Transmitter and receiver apparatus, method for transmitting and method for receiving and record carrier obtained by the method or the transmitter apparatus
03/13/1997WO1997009781A1 Decision feedback filter device in the frequency domain
03/13/1997DE19533113A1 Vorrichtung zum Messen der Signallaufzeit einer digitalen Übertragungseinrichtung Apparatus for measuring the signal propagation delay of a digital transmission facility
03/12/1997EP0762703A1 Multicarrier demodulation with reduction of white frequency distortion
03/12/1997EP0762702A1 Method and apparatus for demodulating a multicarrier signal, taking a channel response estimate and an estimate of white frequency distortion into account
03/12/1997EP0762697A2 Driver and receiver circuit for data communication device
03/12/1997EP0762667A2 Measuring device of the propagation time in a digital transmission system
03/12/1997EP0762650A1 Circuit arrangement for generating a binary output signal
03/12/1997EP0761044A1 Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter
03/12/1997EP0761040A1 Method and apparatus for implementing a type 8b6t encoder and decoder
03/12/1997EP0572376B1 Spectrally efficient digital fm modulation system
03/12/1997CN1145149A Data level selection for multilevel VSB transmission system
03/11/1997US5610947 IR FM modem with flash modulation
03/11/1997US5610945 System for identifying communication sequences transmitted across multiple carriers by examining bit streams for sequences of valid words
03/06/1997WO1997008876A1 HDBn ENCODER AND DECODER
03/06/1997WO1997008861A1 Apparatus and method for digital data transmission
03/06/1997WO1997008830A1 Double-pulse generator for use, in particular, on an eib bus for the transmit mode
03/05/1997CN1144589A Phase detector in carrier recovery network for vestigial sideband signal
03/05/1997CN1144582A Signal-receiving and signal-processing unit
03/05/1997CN1144580A Blind equalizer for vestigial sideband signal
03/05/1997CN1144579A Carrier independent timing recovery system for vestigial sideband modulated signal
03/04/1997US5608762 Apparatus and method for automatic discriminator compensation in a FSK receiver
03/04/1997US5608757 High speed transport system
03/04/1997US5608756 Device for identifying traffic on a paired cable
03/04/1997US5608755 Method and apparatus for implementing carrierless amplitude/phase encoding in a network
03/04/1997US5608728 System and method for equalization of forward and reverse channels of a communication network system
03/04/1997US5608446 Apparatus and method for combining high bandwidth and low bandwidth data transfer
03/04/1997US5608397 Method and apparatus for generating DC-free sequences
03/04/1997CA1338961C Apparatus and method for adaptively optimizing equalization delay of data communication equipment
03/01/1997CA2184144A1 Method and apparatus for adapting a transmission bit rate of a data multiplexer operating according to an asynchronous transfer mode