| Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070) |
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| 02/10/1998 | US5717715 Signal processing apparatus and method |
| 02/05/1998 | WO1998004926A1 Sigma-delta multiplier circuit for power measurement equipment |
| 02/05/1998 | DE19630605A1 Multiplikationsschaltung für Leistungs-Meßgerät Multiplication circuit for power meter |
| 02/04/1998 | EP0822666A2 1-bit digital signal processing device, recording device and reproducing device |
| 02/04/1998 | EP0822665A2 Data compression encoder, decoder, and record carrier |
| 02/03/1998 | US5715366 Method for the coded transmission of voice signals |
| 02/03/1998 | US5714916 Modulator |
| 01/28/1998 | EP0821491A2 Signal processing apparatus and method for sound field processing of sigma-delta modulated digital signal |
| 01/28/1998 | CN1171661A Digital signal precessing method and apparatus |
| 01/27/1998 | US5712874 Noise shaper capable of generating a predetermined output pattern in no-signal condition |
| 01/27/1998 | US5712637 Slope, drift and offset compensation in zero-IF receivers |
| 01/27/1998 | US5712635 Digital to analog conversion using nonuniform sample rates |
| 01/21/1998 | EP0820052A2 Voice-coding-and-transmission system |
| 01/08/1998 | WO1998000923A1 Low power delta sigma converter |
| 01/07/1998 | EP0815651A1 A DELTA-SIGMA ($g(D)$g(S)) MODULATOR HAVING A DYNAMICALLY TUNABLE CONTINUOUS TIME Gm-C ARCHITECTURE |
| 01/07/1998 | EP0815650A1 Variable sample rate dac |
| 01/07/1998 | EP0815647A1 Digital phase-locked loop utilizing a high order sigma-delta modulator |
| 01/06/1998 | US5706308 Signal processing apparatus and method for sigma-delta modulated signals including gain adjustment |
| 12/30/1997 | US5703589 Switched capacitor input sampling circuit and method for delta sigma modulator |
| 12/29/1997 | EP0813768A1 Slope, drift and offset compensation in zero-if receivers |
| 12/24/1997 | WO1997049189A1 Fourth order digital noise shaper circuit |
| 12/24/1997 | WO1997049175A1 Oversampled, noise-shaping, mixed-signal processor |
| 12/18/1997 | WO1997048185A1 Delta-sigma pwm dac for reduced switching |
| 12/17/1997 | EP0813307A1 Delta-sigma analog-to-digital converter including charge coupled devices |
| 12/16/1997 | US5699064 Oversampling D/A converter using a bidirectional shift register |
| 12/03/1997 | EP0809886A1 A fast sigma-delta modulator having a controlled clock generator |
| 12/03/1997 | EP0809882A1 Combination d/a converter and fir filter utilizing active current division and method |
| 11/25/1997 | US5692020 Signal processing apparatus and method |
| 11/25/1997 | US5691720 Delta sigma analog-to-digital converter having programmable resolution/bias current circuitry and method |
| 11/19/1997 | EP0696404B1 Differential coding and decoding method and related circuits |
| 11/13/1997 | WO1997042714A1 Switched current delta-sigma modulator |
| 11/05/1997 | CN1164086A Digital signal recording apparatus and digital signal processing apparatus |
| 10/30/1997 | WO1997033369A3 Reduced complexity signal converter |
| 10/29/1997 | EP0624290B1 Method for cascading sigma-delta modulators and a sigma-delta modulator system |
| 10/28/1997 | US5682162 Oversampling digital-to-analog converter with auto-muting feature |
| 10/28/1997 | US5682161 For receiving an input analog signal/generating an output digital signal |
| 10/28/1997 | US5682160 High-order delta sigma analog-to-digital converter with unit-delay integrators |
| 10/15/1997 | EP0740863B1 Pulse density mapping method for delta sigma modulators |
| 10/15/1997 | CN1162373A Quadrature modulator with integrated distributed RC filters |
| 10/14/1997 | US5677845 Programmable data acquisition system for collecting electrical power signals |
| 10/07/1997 | US5675334 Analog to digital conversion system |
| 10/01/1997 | EP0798908A1 Speech encoder/decoder with speech recording and production functions |
| 10/01/1997 | EP0798865A2 Digital data converter |
| 10/01/1997 | CN1160954A Digital signal processing method and apparatus |
| 09/30/1997 | US5673340 Image processing apparatus for preventing occurrence of moire in a reconstructed image |
| 09/30/1997 | US5673044 Cascaded recursive transversal filter for sigma-delta modulators |
| 09/24/1997 | EP0796525A1 Sigma-delta modulator with reduced delay from input to output |
| 09/17/1997 | CN1159682A A/D and D/A converter |
| 09/16/1997 | US5668831 For the reception of data packets |
| 09/16/1997 | US5668552 Analogue-to-digital converters |
| 09/12/1997 | WO1997033369A2 Reduced complexity signal converter |
| 09/10/1997 | EP0794621A2 Sigma-delta digital-to-analog conversion system and process through reconstruction and resampling |
| 09/10/1997 | EP0793876A1 Variable sample rate adc |
| 08/27/1997 | EP0791247A1 Analog-to-digital converter and sensor device comprising such a converter |
| 08/26/1997 | US5661479 Oversampling modulation in a D/A converter using a combination of feedforward/feedback coefficients and shift registers |
| 08/26/1997 | US5661478 Conversion between analogue and digital signals |
| 08/20/1997 | EP0789868A2 Monolithic pc audio circuit |
| 08/19/1997 | US5659315 Method and apparatus for multiplexed oversampled analog to digital modulation |
| 08/19/1997 | US5659314 Delta sigma modulator using a switched capacitor |
| 08/05/1997 | US5654711 Analog-to-digital converter with local feedback |
| 07/29/1997 | US5652585 Multiple function analog-to-digital converter with multiple serial outputs |
| 07/24/1997 | WO1997026708A1 A DELTA-SIGMA (ΔΣ) MODULATOR HAVING A DYNAMICALLY TUNABLE CONTINUOUS TIME Gm-C ARCHITECTURE |
| 07/16/1997 | EP0635176B1 Analogue-to-digital converters |
| 07/15/1997 | US5648779 Sigma-delta modulator having reduced delay from input to output |
| 07/15/1997 | US5648777 Data converter with FIFO |
| 07/10/1997 | DE19630052A1 Digital=analogue converter using sigma-delta method |
| 07/09/1997 | EP0783207A2 digital signal processing method and apparatus |
| 07/08/1997 | US5646621 Delta-sigma ADC with multi-stage decimation filter and gain compensation filter |
| 07/02/1997 | EP0781467A2 Quadrature modulator with integrated distributed rc filters |
| 06/19/1997 | WO1997022061A1 Method and apparatus for gain correction of a sigma-delta converter |
| 06/11/1997 | EP0778676A2 Multi-rate digital filter apparatus and method for sigma-delta conversion processes |
| 06/10/1997 | US5638070 Signal processing method and apparatus for transforming N-bit codes to M-bit codes wherein M is greater than N |
| 06/10/1997 | US5638010 Digitally controlled oscillator for a phase-locked loop providing a residue signal for use in continuously variable interpolation and decimation filters |
| 06/03/1997 | US5635864 Comparator circuit |
| 05/27/1997 | US5633640 Method and apparatus for a data converter with a single operational amplifier |
| 05/27/1997 | US5633633 For digitizing an analog signal |
| 05/21/1997 | CN1150507A Oversampled high-order modulator |
| 05/13/1997 | US5629881 Method for filtering a digital value train with improved noise behavior, and circuit configuration for performing the method |
| 05/13/1997 | US5629701 Cascaded Nth order (N>2) feedforward sigma-delta modulators |
| 05/13/1997 | US5629655 Integrated distributed RC low-pass filters |
| 05/09/1997 | WO1996039739A3 Hybrid analog-to-digital converter for low power applications, such as use in an implantable medical device |
| 05/06/1997 | US5627536 Multiplexed delta-sigma modulator |
| 04/29/1997 | US5625359 Variable sample rate ADC |
| 04/29/1997 | US5625358 Digital phase-locked loop utilizing a high order sigma-delta modulator |
| 04/29/1997 | US5625357 For a digital-to-analog conversion circuit |
| 04/23/1997 | EP0769222A1 Improved sigma-delta fm demodulator |
| 04/23/1997 | EP0686323B1 One-bit analog-to-digital converters and digital-to-analog converters using an adaptive filter having two regimes of operation |
| 04/22/1997 | US5623263 4th-order sigma-delta modulator with leapfrog topology |
| 04/16/1997 | EP0768781A2 Apparatus for high-speed simultaneous voice/data communications |
| 04/15/1997 | US5621851 For correcting errors relating to expansion of compressed data |
| 04/15/1997 | US5621408 Delta sigma analog-to-digital converter with temporally interleaved architecture |
| 04/15/1997 | US5621407 Digital/analog converter |
| 04/11/1997 | CA2184530A1 Apparatus for high-speed simultaneous voice/data communications |
| 04/10/1997 | WO1997013325A1 Variable sample-rate dac/adc/converter system |
| 04/09/1997 | CN1147167A Comb filter with smaller number of delay elements and radio receiver transmitter having said filter |
| 04/08/1997 | US5619202 Variable sample rate ADC |
| 04/02/1997 | CN1146665A Circuit matched with wave filter |
| 04/01/1997 | US5617090 Method for converting analog signals to digital signals |
| 03/26/1997 | EP0765040A2 Apparatus for completely stable analog-digital conversion |
| 03/26/1997 | EP0764369A1 Switched-capacitor one-bit digital-to-analog converter with low sensitivity to op-amp offset voltage |