Patents
Sitemap › H03 - Basic electronic circuitry › H03M - Coding, decoding or code conversion, in general › H03M 3 - Conversion of analogue values to or from differential modulation
Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070)
01/2004
01/02/2004EP1374411A2 Real time correction of a digital pwm amplifier
01/02/2004EP1374410A2 Multi-sampling sigma-delta analog-to-digital converter
01/02/2004EP1374409A2 Sigma-delta modulator with an adjustable feedback factor
01/01/2004US20040001011 Digital signal conversion apparatus, digital signal conversion method, and computer-readable recording medium in which digital signal conversion program is recorded
12/2003
12/31/2003WO2003052941A3 Broadband sigma-delta modulator
12/31/2003WO2003052938A3 Sigma-delta converter comprising noise suppression
12/31/2003WO2002015407A3 Method and arrangement for synchronizing a σδ-modulator
12/31/2003CN1465029A A variable modulus interpolator, and a variable frequency synthesiser incorporating the variable modulus interpolator
12/30/2003US6670902 Delta-sigma modulators with improved noise performance
12/25/2003US20030235315 Digital microphone
12/25/2003US20030235256 Method and apparatus for improving the performance of delta-sigma modulators
12/24/2003WO2003065587A3 Circuit with a digital to analog converter
12/24/2003WO2003039006A3 Incremental-delta analogue-to-digital conversion
12/24/2003DE10204442C2 Verfahren zur Korrektur von Nichtlinearitäten eines Ausgangssignals eines elektrischen Bauelements, insbesondere eines Messumformers Method of correcting nonlinearities of an output signal of an electrical component, in particular a measuring transducer
12/18/2003WO2003105348A1 Delta - sigma modulators with improved noise performance
12/18/2003US20030231125 Beamformed ultrasonic imager with delta-sigma feedback control
12/16/2003US6664908 Synchronized pulse width modulator
12/16/2003US6664841 Method and apparatus for conditioning an analog signal
12/11/2003US20030227401 Delta-sigma modulators with improved noise performance
12/11/2003DE10233391C1 Analogue/digital converter circuit has output of comparator in first A/D converter combined with signal from second A/D converter for residual error correction before low-pass filtering
12/10/2003EP1157471B1 Methods and apparatus for correction of higher order delta sigma convertors
12/10/2003CN1130834C Signal processor
12/10/2003CN1130831C Transmission device and reproducing device
12/09/2003US6661363 System and method for adaptive sigma-delta modulation
12/09/2003US6661362 Methods and systems for high speed quantizers
12/09/2003US6661360 Analog to digital converter that services voice communications
12/09/2003US6660991 Method and apparatus for measuring a low power signal
12/04/2003WO2003100984A1 Sigma delta a/d converter with pseudo flash converter
12/04/2003WO2003100983A1 Delta-sigma modulators with integral digital low - pass filtering
12/04/2003WO2003077529A3 Coder apparatus for resonant power conversion and method
12/04/2003WO2003065590A3 Electronic circuit with a sigma delta a/d converter
12/04/2003WO2002103916A3 Method and apparatus for delta modulator and sigma delta modulator
12/04/2003US20030223502 Serial data interface
12/04/2003US20030222805 Apparatus for generating at least one digital output signal representative of an analog signal
12/03/2003EP1367722A2 Apparatus for generating at least one digital output signal representative of an analog signal
12/03/2003EP1367721A1 Interpolating function generating apparatus and method, digital-analog converter, data interpolator, program, and record medium
12/03/2003CN1130050C Digital signal processing method and apparatus
12/02/2003US6657574 One line data format for audio analog-to-digital converters
12/02/2003US6657571 Data acquisition system using delta-sigma analog-to-digital signal converters
11/2003
11/27/2003WO2003098808A1 Analog-to-digital converter arrangement and method
11/26/2003EP1365515A1 Analog-to-digital converter arrangement and method
11/26/2003EP1048110B1 A post-filtered sigma-delta for controlling a phase locked loop modulator
11/25/2003US6653967 Fully differential sampling circuit
11/25/2003US6653958 Method for compensating non-linearity of a sigma-delta analog-to-digital converter
11/20/2003WO2003096542A1 Digital-analog converter
11/20/2003WO2003096541A1 High precision analog to digital converter
11/20/2003WO2003075603A3 Digital microphone
11/20/2003WO2002001724A3 Digital-analog converter
11/20/2003US20030216906 Coder apparatus for resonant power conversion and method
11/19/2003EP1363433A1 Phase detection circuit and receiver
11/19/2003CN1457550A Interpolating function generating apparatus and method, digital-analog converter, data interpolator, program, and reocrd medium
11/19/2003CN1128502C Oversampling DA converter
11/18/2003US6650264 Quadrature sampling architecture and method for analog-to-digital converters
11/13/2003WO2003094356A1 Sigma-delta analog-to-digital converter and method
11/13/2003WO2002091581A3 Method and apparatus for analog-to-digital conversion
11/13/2003US20030210166 High precision analog to digital converter
11/12/2003EP1142144B1 Circuit for a multi-standard communications terminal
11/12/2003CN1127820C Arrangement and methods for generating radio frequency signal
11/11/2003US6647064 ADPCM encoding apparatus, ADPCM decoding apparatus and delay circuit
11/11/2003US6646582 Error compensation for sigma-delta modulated digital signals or the like
11/06/2003WO2003091933A1 Operational amplifier integrator
11/06/2003WO2003052923A3 Frequency-down-converter using sigma-delta modulators
11/06/2003WO2003017496A3 Multiplexed analog to digital converter
11/06/2003WO2002065644A3 Hybrid multi-stage circuit utilizing different types of sampling circuit
11/05/2003CN1127217C Analog/digital converter
11/05/2003CN1127216C Oversampled high order modulator
11/04/2003US6642874 Sigma-delta data conversion employing quantization error feedback
11/04/2003US6642873 Multi-level D/A converter incorporated with multi-level quantizer in multi-bit sigma-delta A/D converter
11/04/2003US6642754 Clock signal generator employing a DDS circuit
10/2003
10/30/2003US20030201922 Sigma-delta analog-to-digital converter and method
10/29/2003EP1356593A1 Arrangement for runtime compensation of a runtime difference arising through emulation of a high frequency signal
10/29/2003EP1356592A2 Sigma-delta modulator for digitizing analog high frequency signals
10/29/2003CN1126266C 1-bit digital signal processing device, recording device and reproducing device
10/29/2003CN1126263C Device and method for data compression and expansion of audio signals
10/29/2003CN1126257C Sigma delta modulation circuit
10/28/2003US6639946 Sigma delta modulator with SAW filter
10/28/2003US6639532 Nested chopper delta-sigma modulator
10/28/2003US6639531 Cascaded noise shaping circuits with low out-of-band noise and methods and systems using the same
10/28/2003US6639530 Modulation of an analog signal into a digital representation thereof
10/28/2003US6639526 Circuits and methods for a variable oversample ratio delta-sigma analog-to-digital converter
10/23/2003WO2002023731A3 Methods and systems for digital dither
10/23/2003WO2001097384A3 Real time correction of a digital pwm amplifier
10/23/2003US20030200083 Speech decoding device and speech decoding method
10/22/2003EP1354410A2 Digital to analog converter employing sigma-delta loop and feedback dac model
10/22/2003EP1354409A2 Excess delay compensation in a delta sigma modulator analog-to-digital converter
10/22/2003CN1450549A Signal processing device and D/A converter
10/21/2003US6636170 Signal converter with digital/analog conversion and noise-dependent variability of output signal bandwidth
10/21/2003CA2245072C One bit digital quadrature vector modulator
10/16/2003WO2002005432A3 Sigma-delta modulator with an adjustable feedback factor
10/15/2003EP1353461A1 Analog filter
10/15/2003EP1245081B1 Delta-sigma modulator for fractional-n frequency synthesis
10/09/2003WO2003084074A1 A system and method for adaptive sigma-delta modulation
10/09/2003WO2003084073A1 Delta sigma modulator
10/09/2003US20030189505 Signal processing device having a D/A converter with a reduced circuit area without sacificing the resolution
10/09/2003US20030189504 Randomizer for sigma delta type converter
10/08/2003CN1447935A Noise-shaped digital frequency synthesis
10/08/2003CN1123975C ELectronic digital-to-analog converter circuit for baseband transmission system
10/02/2003WO2003081774A1 Asynchronous sampling rate conversion
10/02/2003WO2002080370A3 Oversampling in analogue-digital and digital-analogue converters
10/02/2003US20030185288 Apparatus and methods for digital-to-analog conversion
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