| Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070) |
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| 04/01/1992 | EP0477690A1 Data reduction method for digital processing a series of signal values |
| 03/31/1992 | US5101205 A/D converter including error correction for a local D/A converter |
| 03/25/1992 | EP0477077A1 Synchronizing the sampling of signals with an external event |
| 03/25/1992 | EP0476973A1 Noise shaping circuit |
| 03/18/1992 | CA2042213A1 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 02/25/1992 | US5091955 Voice coding/decoding system having selected coders and entropy coders |
| 02/18/1992 | US5089818 Method of transmitting or storing sound signals in digital form through predictive and adaptive coding and installation therefore |
| 02/11/1992 | US5087914 DC calibration system for a digital-to-analog converter |
| 01/28/1992 | US5084904 Signal transmission device |
| 01/28/1992 | US5084702 Plural-order sigma-delta analog-to-digital converter using both single-bit and multiple-bit quantizers |
| 01/23/1992 | WO1992001332A1 Fm demodulator |
| 01/21/1992 | US5083310 Compression and expansion technique for digital audio data |
| 01/15/1992 | EP0465713A1 CMOS circuit for average-forming digital-analog converter |
| 01/15/1992 | CN1015307B Sigma-delta modulator for d-to-a converter |
| 01/08/1992 | EP0464891A1 Sigma-delta modulator |
| 01/08/1992 | CN1057742A Method and device for processing analog signal |
| 01/07/1992 | US5079551 ΔΣ digital-to-analog converter with bit grouping by significance for reducing feedback computation time |
| 01/07/1992 | US5079550 Combining continuous time and discrete time signal processing in a delta-sigma modulator |
| 01/02/1992 | EP0463686A1 Analog-to-digital signal converter comprising a multiple sigma-delta modulator |
| 01/02/1992 | EP0463656A1 A method and device for processing an analog signal |
| 12/31/1991 | CA1293813C Switched capacitor arrangement |
| 12/27/1991 | EP0462495A2 Simplified interpolative analog-digital converter for bandpass signals |
| 12/24/1991 | US5075679 Analog/digital converter configuration with sigma-delta modulators |
| 12/24/1991 | CA1293569C Method of and device for speech signal coding and decoding by subbband analysis and vector quantization with dynamic bit allocation |
| 12/18/1991 | EP0461721A1 Transmitter comprising an electronic arrangement for generating a modulated carrier signal |
| 12/18/1991 | EP0461282A1 Oversampling analog/digital converter with noise shaping in switched capacitor techniques |
| 12/17/1991 | US5073777 Plural delta-sigma converters operating in parallel with independent dither generators |
| 12/10/1991 | US5072219 Digital-analog conversion system including a digital modulator having several quantification levels, associated with a digital-analog converter |
| 12/03/1991 | CA1292806C Sigma-delta modulator for d-to-a converter |
| 11/27/1991 | EP0458527A2 Improved analog to digital and digital to analog signal processors |
| 11/27/1991 | EP0458524A2 An analog to digital converter |
| 11/27/1991 | EP0458515A2 Method and apparatus for testing delta-sigma modulators |
| 11/27/1991 | EP0198924B1 Signal processing system |
| 11/26/1991 | US5068661 Multi-stage noise shaping over-sampling d/a converter |
| 11/26/1991 | US5068660 Combining fully-differential and single-ended signal processing in a delta-sigma modulator |
| 11/26/1991 | US5068659 Delta-sigma modulation analog to digital converter |
| 11/26/1991 | US5068657 Method and apparatus for testing delta-sigma modulators |
| 11/26/1991 | CA1292519C Method and arrangement for a sigma delta converter for bandpass signals |
| 11/25/1991 | CA2042539A1 Analog to digital and digital to analog signal processors |
| 11/21/1991 | EP0457749A1 High-accuracy charge-balance analog-digital converter |
| 11/21/1991 | EP0457429A2 Analog-to-digital converters |
| 11/13/1991 | CN1056196A Plural-order sigma-delta analog-to-digital converters using both single-bit and multiple-bit quantization |
| 11/13/1991 | CN1014760B Digital decimation filter |
| 11/12/1991 | US5065157 High order sigma delta oversampled analog-to-digital converter integrated circuit network with minimal power dissipation and chip area requirements |
| 11/05/1991 | CA1291824C Adpcm encoding and decoding circuits |
| 10/31/1991 | WO1991017604A1 Multiaccumulator sigma-delta fractional-n synthesis |
| 10/30/1991 | EP0454407A2 Multi-stage sigma-delta analog-to-digital converter |
| 10/30/1991 | EP0454406A1 Multi-stage sigma-delta analog-to-digital converter |
| 10/30/1991 | EP0453476A1 An ad converter |
| 10/29/1991 | US5061928 System and method of scaling error signals of caseload second order modulators |
| 10/29/1991 | US5061925 Phase equalization system for a digital-to-analog converter utilizing separate digital and analog sections |
| 10/23/1991 | EP0452609A1 High resolution monolithic integrated analog-digital converter |
| 10/23/1991 | EP0452450A1 Analogue to digital converter |
| 10/22/1991 | US5060178 System for analog-digital-analog conversion |
| 10/22/1991 | CA1291222C Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading |
| 10/16/1991 | CN1055454A High order sigma delta oversampled analog-to-digital converter integrated circuit network with minimal power dissipation and chip area requirements |
| 10/16/1991 | CN1055453A Third order sigma delta oversampled analog-to-digital converter network with low component sensitivity |
| 10/15/1991 | US5057840 Σ-Δmodulator for digital-to-analog converter |
| 10/15/1991 | US5057839 Integratable switched-capacitor sigma-delta modulator |
| 10/09/1991 | EP0450984A2 Digital signal requantizing circuit using multi-stage noise shaping |
| 10/09/1991 | EP0450951A2 Analog-to-digital converter |
| 10/09/1991 | EP0450947A2 Analog-to-digital converter |
| 10/08/1991 | US5055846 Method for tone avoidance in delta-sigma converters |
| 10/08/1991 | US5055843 Sigma delta modulator with distributed prefiltering and feedback |
| 10/08/1991 | US5055802 Multiaccumulator sigma-delta fractional-n synthesis |
| 10/02/1991 | EP0448590A1 Predictive coding and decoding. |
| 09/24/1991 | US5050474 Analog signal synthesizer in PCM |
| 09/17/1991 | CA1289250C Oversampling a/d converter comprising an additional capacitor switched in synchronism with switching of an input capacitor |
| 08/27/1991 | US5043729 Decoder for delta-modulated code |
| 08/13/1991 | US5039989 Delta-sigma analog-to-digital converter with chopper stabilization at the sampling frequency |
| 08/08/1991 | WO1991011863A1 Sigma delta modulator |
| 07/24/1991 | EP0209562B1 Apparatus for analogue to digital conversion |
| 07/11/1991 | DE3943072A1 Ein interpolativer a/d umsetzer fuer bandpasssignale An interpolative a / d converter for bandpass signals |
| 07/09/1991 | US5030954 Double rate oversampled interpolative modulators for analog-to-digital conversion |
| 07/09/1991 | US5030952 Sigma-delta type analog to digital converter with trimmed output and feedback |
| 07/02/1991 | US5028925 Sigma-delta converter with improved transfer function |
| 07/02/1991 | US5028924 Digital correction of gain mismatch in a sigma delta modulator |
| 06/28/1991 | WO1991010283A1 Interpolative analog/digital converter for band-pass signals |
| 06/28/1991 | CA2072568A1 Interpolative analog/digital converter for band-pass signals |
| 06/25/1991 | US5027120 Delta-sigma converter with bandpass filter for noise reduction in receivers |
| 06/19/1991 | CN1012926B Method and arrangement for sigma delta converter for bandpass signals |
| 06/13/1991 | DE4038641A1 Digital to analog converter e.g. for CD player - compares instantaneous signal from digital processor with existing value for transfer to digital to analog converter |
| 06/12/1991 | EP0431214A1 Analog to digital converter |
| 06/04/1991 | US5021788 Digital analog converter |
| 06/04/1991 | US5021786 Analog to digital and digital to analog signal processors |
| 05/28/1991 | US5019819 Digital-to-analog conversion circuit |
| 05/16/1991 | WO1991007017A1 Analogue to digital converter |
| 05/14/1991 | US5016279 Speech analyzing and synthesizing apparatus using reduced number of codes |
| 05/07/1991 | US5014284 Discrete slope delta modulation with recovery means |
| 04/30/1991 | US5012245 Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio |
| 04/30/1991 | US5012244 Delta-sigma modulator with oscillation detect and reset circuit |
| 04/23/1991 | US5010347 Analog-to-digital converter having an excellent signal-to-noise ratio for small signals |
| 04/10/1991 | EP0421651A2 Integral switched capacitor for filter/digital to analog converter for sigma-delta encoded digital audio |
| 04/03/1991 | EP0199745B1 Analog-to-digital converter |
| 03/20/1991 | EP0229764B1 Interpolative analogue to digital converter |
| 03/19/1991 | US5001725 Differential switched-capacitor sigma-delta modulator |
| 03/12/1991 | US4999634 Integratable switched-capacitor sigma-delta modulator |
| 03/12/1991 | US4999627 Analog-to-digital converter using prescribed signal components to improve resolution |
| 03/12/1991 | US4999625 Generation of a digital correction signal to compensate for gain mismatches in a sigma delta modulator |
| 03/07/1991 | DE3924504A1 Interpolating A=D converter - with feedback has loop filter with specified min. transfer function w.r.t. interference |