| Patents for H04L 25 - Baseband systems (55,083) |
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| 03/07/1991 | DE3546662C2 Operating communication bus network for processors |
| 03/06/1991 | EP0415897A1 A method of reducing the power requirements in a mobile radio receiver |
| 03/06/1991 | EP0415853A2 Digital data transmission system having error detecting and correcting function |
| 03/06/1991 | EP0415108A2 Method of and apparatus for correcting the phase of a playback clock signal |
| 03/05/1991 | CA1281109C Method for zero byte time slot interchange |
| 03/05/1991 | CA1281095C Multipurpose digital integrated circuit for communication and control network |
| 02/28/1991 | DE3927518A1 Line signal conversion circuitry - uses bipolar switch and AC source and series transformer at opposite ends of line |
| 02/27/1991 | EP0414368A2 Method and apparatus for data and forward error correction coding for low DC-offset and short run length |
| 02/27/1991 | EP0414349A1 Fast decision feedback equalizer for digital data |
| 02/27/1991 | EP0265480B1 Method and apparatus for transferring data between two data processing equipments each driven by an independent clock |
| 02/27/1991 | EP0134817B1 Method of transferring digital signal |
| 02/27/1991 | CN1049581A Subscriber unit for wireless digital subscriber communication system |
| 02/27/1991 | CN1049580A Data and forward error control coding techniques for digital signals |
| 02/26/1991 | US4996453 Power down circuit for low-power circuit with dual supply voltages |
| 02/21/1991 | WO1991002408A1 Line-powered integrated circuit transceiver |
| 02/21/1991 | WO1991002407A1 Wideband digital equalizers for subscriber loops |
| 02/21/1991 | WO1991002403A1 Spectrally efficient digital fm modulation system |
| 02/20/1991 | EP0151616B1 Control signalling arrangement for a digital transmission system |
| 02/20/1991 | CN1049435A Automatic transfer switch of telex circuit |
| 02/19/1991 | US4995106 Fast decision feedback decoder for digital data |
| 02/19/1991 | US4995057 Technique for achieving the theoretical coding gain of digital signals incorporating error correction |
| 02/19/1991 | US4995054 Data transmission using switched resonance |
| 02/19/1991 | US4995031 Equalizer for ISDN-U interface |
| 02/19/1991 | US4994690 Split level bus |
| 02/19/1991 | CA1280482C Circuit arrangement for time-regeneration of broadband digital signals |
| 02/13/1991 | EP0412616A2 Receiver for time-varying distorted data signals |
| 02/13/1991 | EP0412424A2 High speed digital telemetry system for implantable device |
| 02/13/1991 | EP0412234A2 Demodulated data recognition and decision device |
| 02/13/1991 | EP0412085A1 Network interface. |
| 02/12/1991 | US4993063 Channel unit interface circuit |
| 02/12/1991 | US4993048 Self-clocking system |
| 02/12/1991 | US4993047 Volterra linearizer for digital transmission |
| 02/12/1991 | US4992790 Digital phase-locked loop biphase demodulating method and apparatus |
| 02/06/1991 | EP0411526A1 Device for the correction of transmission distorsions of a data signal according to transmission code violations |
| 02/06/1991 | EP0411463A1 Digital transmission system |
| 02/06/1991 | EP0411188A1 Method for supervising the operational state of an electro-optical transmission device, and circuitry for carrying out the method |
| 02/05/1991 | CA1279914C Binary data regenerator with adaptive threshold level |
| 02/04/1991 | CA2022424A1 Method and circuit arrangement for monitoring the operating condition of an electro-optical transmission system |
| 01/30/1991 | EP0410402A2 An automatic system for adjusting the output impedance of fast CMOS drivers |
| 01/30/1991 | CN1011461B Ensemble modem structure for imperfect transmission media |
| 01/29/1991 | US4989243 Use in a public telephone |
| 01/29/1991 | CA1279729C Method and apparatus for transferring data between two data processing equipments each driven by an independent clock |
| 01/23/1991 | EP0409756A1 Data reception device with delayed equalizing and retroactive clock recovery |
| 01/23/1991 | EP0408969A2 Arrangement for propagation time compensation and for jitter cleaning of a received data signal |
| 01/23/1991 | CN1048776A Ensemble modem structure for imperfect transmission media |
| 01/23/1991 | CN1048775A Ensemble modem structure for imperfect transmission media |
| 01/23/1991 | CN1048774A Ensemble modem structure for imperfect transmission media |
| 01/22/1991 | US4987573 Telephone system digital channel bank interface |
| 01/22/1991 | US4987322 Driver-receiver pair for low noise digital signaling |
| 01/22/1991 | US4987318 High level clamp driver for wire-or buses |
| 01/22/1991 | CA1279380C Automatic equaliser for digital transmission |
| 01/18/1991 | CA2021072A1 Data and forward error control coding techniques for digital signals |
| 01/15/1991 | US4985902 Decision feedback equalizer and a method of operating a decision feedback equalizer |
| 01/15/1991 | US4985900 Non-intrusive channel-impairment analyzer |
| 01/15/1991 | CA1279116C Digital sequence polarity detection with adaptive synchronization |
| 01/10/1991 | WO1991000648A1 Waveshaping subsystem using converter and delay lines |
| 01/10/1991 | WO1991000572A1 Bus tie-down without pull-up resistors |
| 01/10/1991 | DE4019659A1 Digital equaliser with shifters - transmits input as output signal only in specified clock pulse signal flank configuration |
| 01/09/1991 | EP0407260A1 Gain matching apparatus for the reception of radio communication signals |
| 01/09/1991 | EP0407031A2 Apparatus for transmitting digital data in analog form |
| 01/09/1991 | CN1048474A Self-tuning direct coupled data limiter of battery saver type paging receiver |
| 01/09/1991 | CN1048472A Mobile assisted handoff |
| 01/08/1991 | US4984194 Method and apparatus for transferring data between two data processing equipments each driven by an independent clock |
| 01/08/1991 | US4984192 Programmable state machines connectable in a reconfiguration switching network for performing real-time data processing |
| 01/08/1991 | US4984099 Apparatus for decoding a transmitted signal |
| 01/02/1991 | EP0406193A2 A method for synchronizing a mobile unit and a base station |
| 01/02/1991 | EP0406186A2 Mobile assisted handoff |
| 01/02/1991 | EP0405662A2 Receiver for data transmission system with nonlinearities |
| 01/02/1991 | EP0405577A2 Frame conversion circuit |
| 01/02/1991 | CN1011109B Telecommunication system comprising bus conductor and telecommunication stations connected to this bus conductor through transformers |
| 01/01/1991 | US4982446 Bit synchronization for optical networks |
| 01/01/1991 | US4982190 Digital arrangement having for its object to shunt ground separations at video circuits |
| 01/01/1991 | US4982186 Pulse train relay |
| 12/30/1990 | WO1990016133A1 Self-tuning direct coupled data limiter of a battery saver type paging receiver |
| 12/30/1990 | CA2020015A1 Frame conversion circuit |
| 12/27/1990 | WO1991000658A1 Method for synchronization in a cellular mobile radio system |
| 12/27/1990 | WO1991000657A1 Mobile assisted handoff |
| 12/27/1990 | EP0404649A1 Device for generating a bit-masking signal during dynamic comparison of a serial data stream with a reference |
| 12/27/1990 | EP0404630A1 Device for receiving information supported by two capacitor-coupled lines, especially for vehicles |
| 12/27/1990 | EP0404268A2 Circuit for adapting the rates of two signals |
| 12/27/1990 | EP0403856A1 Method and circuit for auxiliary data flow transmission |
| 12/27/1990 | CA1278348C Method and apparatus for automatically converting input pulse train signals to output signals of desired polarity |
| 12/26/1990 | CN2068298U 比特串中值滤波器 Bit string median filter |
| 12/26/1990 | CN1011015B Improved exteral circuit of automatic line |
| 12/25/1990 | US4980767 Technique for determining signal dispersion characteristics in communications systems |
| 12/25/1990 | US4980647 Arrangement for measuring and cancelling bias distortion in binary signals of the type not comprising any zero-frequency spectral components |
| 12/19/1990 | EP0403147A2 Line interface circuit and a method of testing such a circuit |
| 12/19/1990 | EP0152423B1 Maintenance response signalling arrangement for a digital transmission system |
| 12/18/1990 | US4979190 Method and apparatus for stabilized data transmission |
| 12/18/1990 | US4979185 High speed serial data link |
| 12/18/1990 | US4979184 Automatic equalizer initialization time control for multipoint networks |
| 12/18/1990 | US4978955 Data randomizing/de-randomizing circuit for randomizing and de-randomizing data |
| 12/18/1990 | CA1278062C2 Multipurpose digital integrated circuit for communication and control network |
| 12/18/1990 | CA1278061C2 Multipurpose digital integrated circuit for communication and control network |
| 12/13/1990 | WO1990015495A1 Process for equalizing signals by means of test sequences |
| 12/12/1990 | EP0401920A2 Amplitude estimator arrangements for digital data |
| 12/12/1990 | CN1047774A Apparatus for processing signalling messages in asynchronous time division telecommunications network |
| 12/12/1990 | CN1010825B Method and apparatus for channelized serial transmission of redundantly encoded binary data |
| 12/11/1990 | US4977593 Optical communications network |
| 12/11/1990 | CA1277786C Optical signal processing |