| Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070) |
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| 06/09/1987 | US4672361 Linear interpolative analog-to-digital converter |
| 06/02/1987 | CA1222571A1 Adaptive predictive code conversion method of interrupting prediction and an encoder and a decoder for the method |
| 06/02/1987 | CA1222570A1 Predictive code conversion method capable of forcibly putting a feedback loop in an inactive state |
| 04/22/1987 | EP0218918A1 Multidimensional DPCM coder with a high processing speed |
| 04/22/1987 | EP0218917A1 Multidimensional DPCM coder with a high-processing speed |
| 04/21/1987 | US4660163 Adaptive digital filter |
| 04/21/1987 | CA1220867A1 Adaptive differential pcm system with residual-driven adaptation of feedback predictor |
| 04/14/1987 | US4658239 Differential pulse code modulation coder |
| 04/08/1987 | EP0217412A2 Coding device selectively connected to a transmission line |
| 03/31/1987 | US4654863 Wideband adaptive prediction |
| 03/24/1987 | US4652858 Interpolative D/A converter |
| 03/17/1987 | US4651131 Apparatus for converting an analogue input signal of narrow bandwidth to digital form |
| 03/17/1987 | CA1219373A1 Adaptive differential pulse code modulation decoding circuit |
| 02/24/1987 | US4646322 Adaptive delta modulation codec |
| 02/24/1987 | US4646148 Process of compressing a succession of digital data and device for carrying out the same |
| 02/17/1987 | CA1218157A1 Analog and digital signal apparatus |
| 01/28/1987 | EP0209562A1 Apparatus for analogue to digital conversion. |
| 01/27/1987 | US4639778 Embedding quantization system for vector signals |
| 01/14/1987 | EP0208371A1 Digital-to-analog converter |
| 12/30/1986 | US4633196 Delta modulator/demodulator with improved tracking of rapidly varying waveforms |
| 12/30/1986 | CA1216069A1 Decoder of adaptive differential pulse code modulation |
| 12/17/1986 | CN85104802A Sampling rate converter for delta modulated signals |
| 12/09/1986 | CA1215177A1 Adaptive differential pcm coding |
| 12/02/1986 | US4626828 Adaptive predictive code conversion method of interrupting prediction and an encoder and a decoder for the method |
| 11/20/1986 | EP0201982A2 A delta modulation decoder |
| 11/18/1986 | CA1214280A1 Quantizer for a dpcm-coder |
| 11/18/1986 | CA1214279A1 Digital dpcm-coders of high processing speed |
| 11/18/1986 | CA1214278A1 Transmission system using differential pulse code modulation with adaptive prediction |
| 11/12/1986 | EP0201401A1 Differential PCM coding method and information transmission system using such a coding method |
| 11/11/1986 | US4622537 Predictive code conversion method capable of forcibly putting a feedback loop in an inactive state |
| 11/05/1986 | EP0199745A1 Analog-to-digital converter. |
| 10/29/1986 | EP0199282A2 Interpolative D/A converter |
| 10/29/1986 | EP0198924A1 Signal processing system |
| 10/29/1986 | EP0081568B1 Enhanced delta modulation encoder |
| 10/14/1986 | US4617645 Compaction method for waveform storage |
| 10/14/1986 | CA1212776A1 Analog and digital signal apparatus |
| 10/07/1986 | US4616349 Analog-to-digital converter for seismic exploration using delta modulation |
| 09/30/1986 | US4614936 Method and arrangement for interpolative A/D conversion |
| 09/16/1986 | US4612654 Digital encoding circuitry |
| 09/09/1986 | CA1211162A1 Adaptive digital filter |
| 08/28/1986 | WO1986005048A1 Improvements in or relating to analogue to digital converters |
| 08/28/1986 | WO1986005047A1 Improvements in or relating to analogue to digital converters |
| 08/26/1986 | CA1210493A1 Seismic exploration system including analog-to- digital converter using delta modulation |
| 08/13/1986 | EP0190694A2 Oversampling converter |
| 07/31/1986 | WO1986004470A1 Apparatus and method for analogue to digital conversion |
| 07/29/1986 | CA1208789A1 Adpcm encoder/decoder with improved tracking |
| 07/23/1986 | EP0188332A2 Digital-to-analog converter and method relating thereto |
| 07/16/1986 | EP0187342A2 Decoding circuit |
| 07/15/1986 | US4600901 Switched capacitance feedback control circuit and sigma-delta modulator using same |
| 07/09/1986 | EP0186763A1 Method of and device for speech signal coding and decoding by vector quantization techniques |
| 07/02/1986 | EP0186400A2 Apparatus for converting an analogue input signal of narrow bandwidth to digital form |
| 06/03/1986 | US4593398 Adaptive differential PCM system with residual-driven adaptation of feedback predictor |
| 06/03/1986 | US4593271 Higher order interpolation for digital-to-analog conversion |
| 05/27/1986 | US4592070 ADPCM encoder/decoder with improved tracking |
| 05/13/1986 | US4588981 Double integration, delta-sigma, analog-digital coder |
| 05/13/1986 | US4588979 Analog-to-digital converter |
| 05/13/1986 | CA1204494A1 Seismic exploration system and an analog-to-digital converter for use therein |
| 04/10/1986 | WO1986002217A1 Analog-to-digital converter |
| 04/09/1986 | EP0176821A1 DPCM coder with reduced internal computing time |
| 04/02/1986 | EP0176243A2 Frequency domain speech coding |
| 03/12/1986 | EP0173983A2 Differential coding circuit |
| 03/04/1986 | US4574383 Decoder of adaptive differential pulse code modulation |
| 02/18/1986 | US4571737 Adaptive differential pulse code modulation decoding circuit |
| 01/15/1986 | EP0168220A2 Method and apparatus for converting an analog signal to a digital signal using an oversampling technique |
| 12/10/1985 | US4558239 High impedance amplifier for an IC chip |
| 12/05/1985 | WO1985005514A1 Signal processing system |
| 11/19/1985 | US4554670 System and method for ADPCM transmission of speech or like signals |
| 10/23/1985 | EP0158841A1 Analogous-digital converter |
| 10/22/1985 | US4549305 Adaptive differential PCM decoder |
| 09/18/1985 | EP0155061A2 Sigma-delta modulator |
| 09/18/1985 | EP0054035B1 Interpolative analog-to-digital converter |
| 09/17/1985 | US4542354 Delta-sigma pulse modulator with offset compensation |
| 09/17/1985 | CA1193734A1 Differential pulse code modulation transmission system |
| 09/10/1985 | US4541103 Digitally controlled syllabic filter for a delta modulator |
| 09/10/1985 | US4541102 High-speed difference pulse code modulation coder |
| 09/10/1985 | US4540973 Quantizer for a DPCM encoder |
| 08/27/1985 | USRE31976 Circuitry for generating reference signal for delta encoding systems |
| 08/20/1985 | US4536880 Digital DPCM-coder having a high processing speed |
| 08/13/1985 | CA1191958A1 Delta-sigma modulator with switched capacitor implementation |
| 07/30/1985 | US4532494 Adaptive delta codec which varies a delta signal in accordance with a characteristic of an input analog signal |
| 07/18/1985 | WO1985003177A1 Differential coded pulse modulation system |
| 07/02/1985 | US4527133 Self-balancing current sources for a delta modulator |
| 06/04/1985 | CA1188423A1 Speech coding method and device for implementing the improved method |
| 05/28/1985 | US4520491 Transmission system using differential pulse code modulation with adaptive prediction |
| 05/22/1985 | EP0142439A2 Method of compressing a train of digital information, and apparatus therefor |
| 05/21/1985 | US4518950 Digital code converter |
| 04/24/1985 | EP0138548A2 Analog-to-digital encoder and digital-to-analog decoder |
| 04/23/1985 | US4513426 Adaptive differential pulse code modulation |
| 04/17/1985 | EP0137620A2 Improvements in or relating to integrated circuits |
| 04/02/1985 | US4509037 Enhanced delta modulation encoder |
| 03/26/1985 | US4507791 Analog and digital signal apparatus |
| 03/26/1985 | CA1184660A1 Enhanced delta modulation encoder |
| 02/19/1985 | US4501001 Variable slope delta coding processor using adaptive prediction |
| 02/19/1985 | CA1182923A1 Delta modulator with a high-pass digital output filter |
| 01/23/1985 | EP0131817A2 Adaptive differential PCM system with residual-driven adaptation of feedback predictor |
| 01/08/1985 | US4493091 Analog and digital signal apparatus |
| 11/27/1984 | CA1178679A1 System for the quantization of signals |
| 11/13/1984 | CA1177965A1 Receiver for cvsd modulation with integral filtering |
| 11/06/1984 | US4481644 Differential pulse code modulation transmission system |
| 10/30/1984 | USRE31720 Digital encoding circuitry |