| Patents for H04L 25 - Baseband systems (55,083) |
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| 05/09/1990 | EP0367208A2 Line interface circuit |
| 05/09/1990 | EP0367093A2 DC-free line code for arbitrary data transmission |
| 05/08/1990 | US4924492 Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises |
| 05/08/1990 | US4924464 Technique for converting either way between a plurality of N synchronized serial bit streams and a parallel TDM format |
| 05/08/1990 | US4924463 Data coding method for use in digital communication systems |
| 05/02/1990 | EP0366160A1 Non intrusive channel impairment analyser |
| 05/02/1990 | EP0366159A1 Non intrusive channel impairment analyser |
| 05/01/1990 | US4922493 Error detection and correction circuit |
| 05/01/1990 | US4922249 Binary-to-bipolar converter |
| 04/25/1990 | EP0365435A2 Multipath transmission system applicable to an automobile |
| 04/25/1990 | EP0365401A1 Comparator circuit with variable hysterisis for a digital audio reception interface |
| 04/25/1990 | EP0165242B1 Fiber optic digital data transmitting system |
| 04/24/1990 | US4920545 Method and apparatus for transmitting a synchronous data signal on a transmission medium on which the transmission rate is greater than the data signal bit rate |
| 04/24/1990 | CA1268226A1 System for maintaining low bit error rate in a star- coupled network of direct coupled stations |
| 04/19/1990 | WO1990004295A1 Symbol detection and error correction coding in a local area network |
| 04/19/1990 | WO1990004290A1 Data alignment circuit and method for self-clocking encoded data |
| 04/19/1990 | DE3835338A1 Method for transmitting additional signals in digital data transmission |
| 04/19/1990 | DE3835259A1 Circuit arrangement for receiving serially transmitted digital data |
| 04/18/1990 | EP0364170A2 High speed serial data link |
| 04/18/1990 | EP0363551A1 Adaptive equalization for recording systems using partial-response signaling |
| 04/18/1990 | EP0363505A1 Method and circuit for increasing output impedance to a preset value during switching in a CMOS integrated power amplifier |
| 04/18/1990 | EP0363500A1 Circuit arrangement for the correction of digital signals received in an analogous form |
| 04/17/1990 | US4918329 Data transmission system |
| 04/12/1990 | DE3834377A1 Method for the automatic detection and classification of digital quadrature-amplitude-modulated signals having unknown parameters |
| 04/05/1990 | DE3833618A1 Digital information transmission system |
| 04/04/1990 | EP0360904A1 Circuit arrangement for the correction of digital signals received in an analogous form |
| 04/03/1990 | US4914618 Asynchronous serial communications apparatus with variable length stop bit generation capability |
| 03/28/1990 | EP0360721A2 Method and apparatus for high speed asynchronous communication |
| 03/28/1990 | EP0360691A2 Apparatus for receiving digital signal |
| 03/28/1990 | EP0360543A1 Power line communications system |
| 03/28/1990 | EP0360241A2 Error correction system in a multicarrier radio transmission system |
| 03/27/1990 | US4912729 Phase-locked-loop circuit and bit detection arrangement comprising such a phase-locked-loop circuit |
| 03/27/1990 | US4912725 Adaptive equalizer included in the receiver for a data transmission system |
| 03/27/1990 | US4912723 Multipurpose digital IC for communication and control network |
| 03/27/1990 | US4912524 Digital signal transmission system having conversion means for reducing the light emission time of a light emitting diode |
| 03/27/1990 | CA1267195A1 Technique for synthesizing the modulation of a time varying waveform with a data signal |
| 03/21/1990 | EP0359265A2 Zero string error detection circuit |
| 03/21/1990 | EP0359156A2 Network interface and telephone terminal |
| 03/21/1990 | EP0359072A2 Digital information transmission system with transmission of additional information |
| 03/21/1990 | CN1007313B Waveform shaping apparatus |
| 03/20/1990 | US4910755 Regenerator/synchronizer method and apparatus for missing-clock timing messages |
| 03/20/1990 | US4910753 FSK demodulating device |
| 03/20/1990 | US4910750 Data transmission system |
| 03/20/1990 | US4910628 Terminal unit in information transmission system |
| 03/20/1990 | CA1266905A1 Transmission and reception of synchronous data and timing signals using a steady bit stream |
| 03/14/1990 | EP0357701A1 Electro-optical data handling system with noise immunity |
| 03/14/1990 | EP0357667A1 Node for backplane bus. |
| 03/13/1990 | US4908827 Forward error correction system |
| 03/13/1990 | US4908804 Combinatorial coded telemetry in MWD |
| 03/13/1990 | US4908530 Non-linear squelch circuit for IEEE-802. 3 protocol |
| 03/07/1990 | EP0357471A1 Interface circuit for a serial link or current loop |
| 03/07/1990 | EP0356487A1 Data bit detector for fiber optic system |
| 03/07/1990 | CN1007116B Digital wire receiver |
| 03/07/1990 | CN1007115B Waveform shaping circuit |
| 03/06/1990 | US4907222 Vehicle multiplex system |
| 03/06/1990 | US4907186 Data direct ingest system |
| 02/28/1990 | EP0356090A2 Fibre optic data coupler |
| 02/28/1990 | EP0355988A2 Method and apparatus for transmitting and receiving characters using a balanced weight error correcting code |
| 02/28/1990 | EP0355137A1 Dynamic speed shifter for fiber optic data transmission |
| 02/27/1990 | US4905258 Data circuit-terminating equipment |
| 02/27/1990 | US4905257 Manchester decoder using gated delay line oscillator |
| 02/27/1990 | US4905255 Decision directed gain control |
| 02/27/1990 | US4905254 Arrangement for combating intersymbol interference and noise |
| 02/27/1990 | CA1266310A1 Circuit arrangement for serial data transmission between a plurality of subscriber stations |
| 02/22/1990 | DE3828271A1 Method for the serial transmission of messages |
| 02/20/1990 | US4903280 Circuit arrangement for serial data transmission between a plurality of subscriber stations |
| 02/20/1990 | CA1266128A1 Data modulation interface |
| 02/13/1990 | US4901344 Telephone system digital channel bank interface |
| 02/13/1990 | US4901319 Transmission system with adaptive interleaving |
| 02/13/1990 | CA1265851A1 Superposed quadrature modulated baseband signal processor |
| 02/08/1990 | DE3821709A1 Method for decoding digital signals |
| 02/07/1990 | EP0354119A1 Packet switch for asynchronously transmitting data in a digital transmission network |
| 02/06/1990 | US4899337 Time division multiplexer with automatic call function |
| 02/06/1990 | US4899114 Voltage source amplifier for use in a pseudoternary code transmitter |
| 01/31/1990 | EP0352970A2 System and method for detecting character boundaries in a serial coded data stream |
| 01/31/1990 | EP0352965A2 Data transmission system |
| 01/30/1990 | US4897857 FSK demodulating device |
| 01/30/1990 | US4897854 Alternate pulse inversion encoding scheme for serial data transmission |
| 01/23/1990 | US4896335 Digital 2B1Q transmitter with high precision and linearity time domain response |
| 01/23/1990 | CA1264824A1 Waveform shaping circuit |
| 01/16/1990 | US4894847 High speed half duplex modem with fast turnaround protocol |
| 01/10/1990 | EP0349603A1 Process and arrangement for equalizing dispersive, linear or approximately linear channels for transmitting digital signals. |
| 01/10/1990 | CN1038737A Correction circuit for digital quadrature-signal pair |
| 01/10/1990 | CN1038731A Binary data regenerator with adaptive threshold level |
| 12/26/1989 | US4890299 Fast timing acquisition for partial-response signalling |
| 12/26/1989 | US4890010 Matched current source serial bus driver |
| 12/21/1989 | DE3917214A1 Method for the bit-serial transmission of datawords |
| 12/21/1989 | DE3821469A1 Method for transmitting data between two stations via optical waveguides |
| 12/20/1989 | EP0347359A2 CMOS data recovery system |
| 12/20/1989 | EP0346783A1 Method and device for transmitting digital telemetry signals in a digital data flow |
| 12/20/1989 | EP0346572A2 Circuit arrangement for the transmission of binary signals |
| 12/19/1989 | US4888792 Multi-level quadrature amplitude modulation and demodulation system |
| 12/19/1989 | US4888791 Clock decoder and data bit transition detector for fiber optic work station |
| 12/19/1989 | US4888779 Matched spectral null trellis codes for partial response channels |
| 12/19/1989 | US4888775 Trellis codes for partial response channels |
| 12/19/1989 | US4888586 Data transmission system |
| 12/14/1989 | WO1989012366A1 Coupler for separated-potential transmission of a two-valued signal by means of a pulse transformer |
| 12/13/1989 | EP0345282A1 Spectrally efficient digital modulation method and apparatus. |
| 12/12/1989 | US4887312 Method and apparatus for transmission of optical data between two electrically separated transmitting receiving units |
| 12/12/1989 | US4887280 System for detecting the presence of a signal of a particular data rate |