| Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070) |
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| 02/18/2003 | US6522275 Method and apparatus for sample rate conversion for use in an analog to digital converter |
| 02/18/2003 | US6522273 Circuits systems and methods for power digital-to-analog converter protection |
| 02/13/2003 | WO2002103609A9 A variable modulus interpolator, and a variable frequency synthesiser incorporating the variable modulus interpolator |
| 02/13/2003 | US20030031262 Recording of super-audio or like one-bit-per-sample signals on a PCM recorder |
| 02/13/2003 | US20030030577 Error compensation for sigma-delta modulated digital signals or the like |
| 02/12/2003 | CN1397115A 模拟滤波器 Analog filter |
| 02/11/2003 | US6518905 Parallel time interleaved delta sigma modulator |
| 02/11/2003 | US6518904 Cascade sigma-delta modulator |
| 02/11/2003 | US6518903 Analog-to-digital converter |
| 02/11/2003 | US6518902 PC card and WLAN system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storage |
| 02/11/2003 | US6516672 Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter |
| 02/06/2003 | US20030025624 Analog FIR-filter |
| 02/06/2003 | US20030025622 Apparatus and method for gain calibration technique for analog-to-digital converter |
| 02/06/2003 | US20030025069 Method and apparatus for measuring a low power signal |
| 02/05/2003 | EP1281943A1 Method and apparatus for measuring a low power signal |
| 02/04/2003 | US6515609 Radio receiver |
| 02/04/2003 | US6515607 Delta-sigma modulator |
| 02/04/2003 | US6515606 Analog to digital converter |
| 02/04/2003 | US6515605 Base station having high speed, high resolution, digital-to-analog converter with off-line sigma delta conversion and storage |
| 02/04/2003 | US6515604 Mixed signal processing unit with improved distortion and noise characteristics |
| 02/04/2003 | US6515603 Sigma delta modulator with buried data |
| 02/04/2003 | US6515601 Noise shaper |
| 01/30/2003 | US20030021024 Aberration correcting optical relay for optical system, in particular mirror telescope |
| 01/29/2003 | EP1280278A1 Offset error compensation of input signals in analog-to-digital converter |
| 01/29/2003 | EP1212838B1 Hybrid bandpass and baseband delta-sigma modulator |
| 01/23/2003 | US20030016294 Compensation apparatus for digital image signal |
| 01/23/2003 | US20030016152 Delta sigma D/A converter |
| 01/21/2003 | US6509852 Apparatus and method for gain calibration technique for analog-to-digital converter |
| 01/21/2003 | US6509746 Excitation circuit for compensated capacitor industrial process control transmitters |
| 01/16/2003 | WO2003005662A1 Receiver with improved digital intermediate to base band demodulator |
| 01/16/2003 | WO2003005570A1 Audio reproducing device and method, audio amplifier, and integrated circuit for audio amplifier |
| 01/16/2003 | US20030014460 Analog filter |
| 01/16/2003 | US20030012307 Receiver with improved digital intermediate to base band demodulator |
| 01/15/2003 | EP1210773B1 Analog-to-digital converter for a signal in the gigahertz range, millimetric wave receivers and bandpass filter for millimetric waves |
| 01/15/2003 | CN1391740A Method and apparatus for generating RF signal |
| 01/15/2003 | CN1099164C A/D and D/A converter |
| 01/15/2003 | CN1099159C Circuit matched with wave filter |
| 01/14/2003 | US6507305 Pipelined analog-to-digital converter with noise shaping |
| 01/14/2003 | US6507302 Multi-bit ΔΣ A/D converter |
| 01/14/2003 | US6507301 Sigma-delta modulator with an adjustable feedback factor |
| 01/14/2003 | US6507297 System and method for variable gain coder-decoder |
| 01/09/2003 | WO2003003789A2 Method and apparatus for minimizing latency in digital signal processing systems |
| 01/09/2003 | WO2002078194A3 Method and apparatus for conditioning an analog signal |
| 01/09/2003 | WO2001067591A9 Digital-to-analog interface circuit having adjustable time response |
| 01/09/2003 | US20030006922 Digital-to-analog converter |
| 01/09/2003 | CA2451999A1 Method and apparatus for minimizing latency in digital signal processing systems |
| 01/08/2003 | EP1273100A1 Balanced circuit arrangement |
| 01/07/2003 | US6505221 FIR filter utilizing programmable shifter |
| 01/07/2003 | US6503819 Fabrication process of a semiconductor integrated circuit device |
| 01/03/2003 | WO2003001675A2 Nmulti-level quantizer with dithering and multi-threshold generation for a multi-bt sigma-delta modulator |
| 01/03/2003 | WO2003001674A2 Multi-level quantizer delta sigma modulator with current mode dem and dem decision logic |
| 01/03/2003 | WO2003001669A1 Fractional decimation filter using oversampled data |
| 01/03/2003 | WO2002027919A3 Non-linear signal correction |
| 01/01/2003 | CN1388965A Audio signal compression |
| 01/01/2003 | CN1388964A Audio signal processing with adaptive noise-shaping modulation |
| 12/31/2002 | US6501408 Finite impulse response digital to analog converter with offset compensation |
| 12/31/2002 | US6501405 Method and apparatus for digital to analog conversion with distortion calibration |
| 12/31/2002 | US6501404 System and method for encoding an input data stream by utilizing a predictive, look-ahead feature |
| 12/27/2002 | WO2002103916A2 Method and apparatus for delta modulator and sigma delta modulator |
| 12/27/2002 | WO2002103609A1 A variable modulus interpolator, and a variable frequency synthesiser incorporating the variable modulus interpolator |
| 12/27/2002 | WO2002061950A3 Sigma-delta modulator for digitizing analog high frequency signals |
| 12/26/2002 | US20020196169 Digital delta epsilon modulator and D/A converter using the modulator |
| 12/26/2002 | US20020196168 Method and apparatus for delta modulator and sigma delta modulator |
| 12/24/2002 | US6498573 Sigma-delta A/D converter |
| 12/24/2002 | US6498572 Method and apparatus for delta modulator and sigma delta modulator |
| 12/19/2002 | WO2002101932A1 Bandpass sigma-delta analog-to-digital converter and mash sigma-delta converter incorporating same |
| 12/19/2002 | WO2002101931A2 Pipeline ad converter |
| 12/19/2002 | US20020190883 Oversampling circuit and digital/analog converter |
| 12/19/2002 | CA2450702A1 Bandpass sigma-delta analog-to-digital converter and mash sigma-delta converter incorporating same |
| 12/18/2002 | CN1386326A Digital signal encoding apparatus and method digital signal decoding apparatus and method, and digital signal transmission system |
| 12/17/2002 | US6496128 Sigma-delta analog-to-digital converter array |
| 12/12/2002 | US20020186776 Multi-bit delta-sigma analog-to-digital converter with error shaping |
| 12/12/2002 | US20020186155 Method and apparatus for efficient mixed signal processing in a digital amplifier |
| 12/11/2002 | EP1264394A2 Digital-to-analog interface circuit having adjustable time response |
| 12/11/2002 | EP1171956B1 Hybrid low-pass sigma-delta modulator |
| 12/11/2002 | CN1096149C Signal processing apparatus and method for sound field processing of sigma-delta modulated digital signal |
| 12/10/2002 | US6492925 Ultra-wide band (20 MHz to 5 GHz) analog to digital signal processor |
| 12/05/2002 | US20020180629 Delta-sigma modulator |
| 12/05/2002 | US20020179821 Semiconductor integrated circuit device and imaging system |
| 12/05/2002 | US20020178827 Sigma-delta analog to digital converter for process transmitter |
| 12/04/2002 | EP1263144A1 Delta sigma type AD converter |
| 12/04/2002 | EP1262049A1 COMBINED TRANSMIT FILTER AND D-to-A CONVERTER |
| 12/03/2002 | US6489913 Sub-ranging analog-to-digital converter using a sigma delta converter |
| 12/03/2002 | US6489910 Oversampling circuit and digital/analog converter |
| 12/03/2002 | US6489909 Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal |
| 12/03/2002 | US6489908 Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma-delta conversion and storage |
| 12/03/2002 | US6489907 Method of re-establishing the stability of a sigma-delta modulator and a circuit for implementing the method |
| 12/03/2002 | US6489906 ΔΣ type A/D converter |
| 11/28/2002 | WO2002095972A1 Sigma-delta modulation code division multiple-access receiver |
| 11/28/2002 | WO2002095936A1 Audio output amplifier |
| 11/28/2002 | US20020175847 Delta sigma type AD converter |
| 11/28/2002 | US20020175846 Multi-bit delta sigma A/D converter |
| 11/27/2002 | EP1261136A1 Delta sigma type AD converter |
| 11/27/2002 | EP1260039A2 Application of digital processing scheme for enhanced cable television network performance |
| 11/27/2002 | EP1082811B1 Pre-recorded sigma delta values for power amplifier control |
| 11/26/2002 | US6486815 Oversampling circuit and digital/analog converter |
| 11/26/2002 | US6486814 Digital-to-analog converter using different multiplicators between first and second portions of a data holding period |
| 11/26/2002 | US6486813 Oversampling circuit digital/analog converter |
| 11/26/2002 | US6486810 Method and apparatus for continuously variable slope delta modulation coding of signals |
| 11/21/2002 | US20020173282 Wireless user terminal and system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storage |