| Patents for H04L 25 - Baseband systems (55,083) |
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| 02/21/1989 | US4807261 Method for decoding data received |
| 02/21/1989 | US4807260 Non high frequency clock dependent Manchester biphasic decoder and comparator |
| 02/21/1989 | US4807249 Circuit arrangement for serial data transmission between a plurality of subscriber stations |
| 02/21/1989 | US4807231 Multiplex communication method |
| 02/21/1989 | US4806907 Apparatus and method for digital data transmission |
| 02/15/1989 | EP0303410A2 Non-linear squelch circuit |
| 02/15/1989 | EP0303407A2 Crosstalk reduction in unshielded twisted-pair lines |
| 02/14/1989 | US4805214 Digital signal transmitting circuit for telephone network |
| 02/14/1989 | US4805196 Line delay compensation for digital transmission systems utilizing low power line drivers |
| 02/14/1989 | US4805194 Serial data communication system |
| 02/14/1989 | US4805190 Detector logic circuit for a sychronous transmission system for data comprising ternary symbols and controlled partial response class 1, N=2 type intersymbol interference |
| 02/08/1989 | EP0302162A2 Apparatus for matching unbalanced R.F. baseband signals to balanced signals on a twisted two-wire line |
| 02/01/1989 | EP0301282A1 Signal transmission method |
| 02/01/1989 | EP0301191A2 PRML coding |
| 01/31/1989 | US4802220 Method and apparatus for multi-channel communication security |
| 01/31/1989 | US4802190 Method of transmitting information by means of code signals, information transmission system for carrying out the method, and transmitting and receiving apparatus for use in the transmission system |
| 01/26/1989 | WO1989000790A1 Pcm signal coding |
| 01/26/1989 | DE3723187A1 Digital communication system |
| 01/25/1989 | EP0300771A1 PCM signal coding |
| 01/25/1989 | EP0300649A1 Bit synchronisation for optical networks |
| 01/25/1989 | EP0300565A1 Signal decoding device relating to frequency modulated transmissions |
| 01/25/1989 | EP0300449A2 Digital automatic line equalizer with means for controlling tap gains of transversal filter on mean power of output from the filter |
| 01/25/1989 | EP0300263A2 Weak/strong bus driver |
| 01/24/1989 | US4800573 Equalization arrangement |
| 01/24/1989 | CA1249357A1 Biphase coded signal including synchronizing pattern transmission method |
| 01/18/1989 | EP0299639A2 Digital data communications system |
| 01/17/1989 | US4799236 Telecommunication system comprising a bus conductor and telecommunication stations connected to this bus conductor through transformers |
| 01/17/1989 | US4799217 Three time slot digital subscriber line termination |
| 01/17/1989 | US4799180 Adaptive automatic equalizer |
| 01/17/1989 | CA1249027A1 Method for the additional transmission of information via a digital auxiliary channel, and application of the method |
| 01/12/1989 | WO1989000368A1 Device for potential-free transmission of data |
| 01/12/1989 | WO1989000367A1 Digital differential signal transmission apparatus having intrinsically safe barrier |
| 01/12/1989 | WO1989000364A1 Data transmission using switched resonance |
| 01/12/1989 | DE3722125A1 Method for pulse duration modulation and circuit arrangement for carrying out the method |
| 01/12/1989 | DE3721805A1 Method for transmitting narrow-band data in a digital broadband channel |
| 01/11/1989 | EP0298609A2 Signal scrambling transmission system |
| 01/10/1989 | US4797951 Parallel optical data transmission system |
| 01/10/1989 | US4797904 Transmitter for ISDN S-bus interface circuit |
| 01/04/1989 | EP0297932A2 Bus transmitter having controlled trapezoidal slew rate |
| 01/04/1989 | EP0297286A2 Receiver circuit with hysteresis |
| 01/03/1989 | US4796281 Digital signal transmission system |
| 01/03/1989 | US4796280 Digital data separator |
| 01/03/1989 | US4796278 Repeater for digital communication system |
| 01/03/1989 | US4796253 Time base converter employing two reference position phase lock loop |
| 12/29/1988 | DE3719590A1 Method for equalising digital signals |
| 12/28/1988 | EP0296595A2 Instrument for measuring the phase jitter of analog signals |
| 12/28/1988 | EP0296201A1 Optical communications network |
| 12/28/1988 | CA1247764A Key telephone system |
| 12/27/1988 | US4794641 Data transmission system of key telephone system |
| 12/27/1988 | US4794627 Process for the parallel-series code conversion of a parallel digital train and a device for the transmission of digitized video signals using such a process |
| 12/27/1988 | US4794624 Method for clock synchronization of a signal receiver |
| 12/27/1988 | US4794604 Optimal error correction method for zero byte time slot interchange (ZBTSI) clear channel data transmission |
| 12/27/1988 | US4794555 Waveform shaping circuit |
| 12/22/1988 | DE3717886A1 Method for transmitting data |
| 12/21/1988 | EP0295489A1 Error detection system for two-state fiber optic sensors |
| 12/20/1988 | US4792940 Automatic retrain method for a full duplex modem having an echo canceller and an equalizer |
| 12/20/1988 | CA1247205A1 Noise-free terminal station compatible with existing master stations |
| 12/15/1988 | WO1988010036A1 High speed scrambling at lower clock speeds |
| 12/15/1988 | WO1988009969A1 Process-to-processor communications protocol for a public service trunking system |
| 12/14/1988 | EP0294897A1 Data transmission system comprising a decision feedback equalizer and using partial-response techniques |
| 12/14/1988 | EP0294896A1 Data signal transmission system using decision feedback equalisation |
| 12/14/1988 | EP0294895A1 Arrangement for cancelling intersymbol interference and noise |
| 12/14/1988 | EP0294614A2 m bit to n bit code converting circuit |
| 12/14/1988 | CN88103100A High speed half duplex modem with fast turnaround protocol |
| 12/13/1988 | US4791313 Bipolar transistor switching enhancement circuit |
| 12/13/1988 | CA1246678A1 Optical heterodyne receiver |
| 12/07/1988 | EP0294116A2 Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks |
| 12/07/1988 | EP0293620A1 Method of signal transmission |
| 12/07/1988 | CN88101687A Duobinary encoded signal decoder |
| 12/06/1988 | US4789995 Synchronous timer anti-alias filter and gain stage |
| 12/06/1988 | US4789994 Adaptive equalizer using precursor error signal for convergence control |
| 12/06/1988 | CA1246260A1 Modem communication system having training means and method for training same |
| 12/01/1988 | DE3816203A1 Semiconductor circuit |
| 11/30/1988 | EP0292817A2 Circuit for obtaining bipolar digital signals |
| 11/30/1988 | EP0292691A2 Fast turnaround protocol for use with a high speed half duplex modem |
| 11/30/1988 | EP0292686A2 Line delay compensation arrangement for digital transmission systems utilizing low-power line drivers |
| 11/30/1988 | EP0292625A1 Level clamp for three-state CMOS bus structure |
| 11/29/1988 | US4788694 Data transmitter |
| 11/29/1988 | CA1245731A1 Failsafe decision circuit |
| 11/24/1988 | DE3816018A1 Protective circuit for infrared receivers |
| 11/24/1988 | DE3715294A1 Method for data transmission |
| 11/23/1988 | EP0292117A1 Automatic threshold adjustment circuit for digital data communication |
| 11/22/1988 | US4787094 Apparatus for transmitting digital signal |
| 11/22/1988 | US4787093 Combinatorial coded telemetry |
| 11/22/1988 | US4787064 Circuit module with interface circuits for connecting to plurality of busses operating in different operating modes |
| 11/22/1988 | US4786890 Method and apparatus for implementing a PRML code |
| 11/22/1988 | US4786884 Adaptive transversal filter |
| 11/22/1988 | US4786882 Quadriphase phase modulation system |
| 11/22/1988 | US4786797 Electro-optical data handling system with noise immunity |
| 11/17/1988 | EP0291246A2 Method for converting signal levels, and device for carrying out the method |
| 11/17/1988 | EP0112395B1 Training system for data receiver |
| 11/15/1988 | US4785468 Intermittent receiver |
| 11/15/1988 | US4785467 Transmission system employing high impedance detection for carrier detection |
| 11/15/1988 | US4785466 Encoder/decoder circuit for B8ZS and B6ZS applications |
| 11/15/1988 | US4785465 Circuit arrangement for serial data transmission between a plurality of subscriber stations |
| 11/15/1988 | US4785265 For equalizing signals from plural cables of different lengths |
| 11/15/1988 | US4784001 Magnetic flowmeter with isolation amplifier and ranging circuit therefor and method |
| 11/15/1988 | CA1244950A1 Method and apparatus for encoding and decoding an nrzi digital signal with low dc component and minimum low frequency components |
| 11/15/1988 | CA1244947A1 Control system |
| 11/09/1988 | EP0289526A1 Adaptive threshold sampling method. |