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)
01/2001
01/11/2001WO2001003303A2 Method and apparatus for efficient mixed signal processing in a digital amplifier
01/10/2001CN1279844A Beamformed ultrasonic imager with delta-sigma feedback control
01/09/2001US6172631 Double-sampling pseudo-3-path bandpass sigma-delta modulator
01/09/2001US6172630 Extended common mode input range for a delta-sigma converter
01/09/2001US6172628 Tone modulation with square wave
01/04/2001WO2001001578A1 Method for compensating non-linearity of a sigma-delta analog-to-digital converter
01/03/2001CN1278970A A post-filtered and delta, and sigma, for controlling a phase locked loop modulator
01/02/2001US6169507 Stabilization of single loop sigma-delta modulators of a high order
01/02/2001US6169506 Oversampling data converter with good rejection capability
12/2000
12/28/2000WO2000079706A1 Direct conversion delta-sigma receiver
12/26/2000US6166873 Audio signal transmitting apparatus and the method thereof
12/19/2000US6163287 Hybrid low-pass sigma-delta modulator
12/19/2000US6163286 Digitally driven analog test signal generator
12/12/2000US6160506 Low-noise sigma-delta analog-to-digital converter
12/12/2000US6160505 Method and apparatus for converting an analog signal to a digital signal
12/06/2000EP1057273A1 Transmission circuit for a radio frequency signal
12/05/2000US6157331 Sigma delta modulator with automatic saturation detection and recovery
12/05/2000US6157329 Bandpass sigma-delta modulator employing high-Q resonator for narrowband noise suppression
11/2000
11/28/2000US6154497 Method and system for analog to digital conversion
11/28/2000US6154161 Integrated audio mixer
11/28/2000US6154159 Electronic sampling circuit
11/23/2000DE19922127A1 Integrierter Schaltkreis mit einem A/D- oder D/A-Wandler mit galvanischer Trennung Integrated circuit with an A / D or D / A converter with galvanic isolation
11/21/2000US6150969 Correction of nonlinear output distortion in a Delta Sigma DAC
11/16/2000WO2000069078A1 Sigma-delta analog/digital converter array
11/16/2000WO2000069074A1 Nested modulator arrangement
11/16/2000CA2371083A1 Nested modulator arrangement
11/15/2000EP1052780A2 Integrated circuit with A/D or D/A converter with galvanic isolation
11/15/2000CN1273711A video rate D/A converter with delta modulator
11/14/2000US6147634 Method and apparatus for digital to analog conversion with reduced noise
11/14/2000US6147633 Analog-to-digital converter having offset removing function
11/14/2000US6147631 Input sampling structure for delta-sigma modulator
11/14/2000US6147522 Reference voltage circuitry for use in switched-capacitor applications
11/08/2000EP1050971A2 Method and apparatus for producing a pulse width modulated signal
11/08/2000EP0712549B1 Data-directed scrambler for multi-bit noise-shaping d/a converters
11/07/2000US6144328 Cascaded delta sigma modulators
11/07/2000US6144326 Digital isolation system with ADC offset calibration
11/02/2000WO2000065723A1 Sigma-delta analog-to-digital converter
11/02/2000WO2000065713A2 Sample rate converter
11/02/2000WO2000065537A1 Method and device for determining interpolated intermediate values of a sampled signal
11/02/2000EP1048112A2 Sigma-delta-d/a-converter
11/02/2000EP1048110A1 A POST-FILTERED $g(D)$g(S) FOR CONTROLLING A PHASE LOCKED LOOP M ODULATOR
10/2000
10/31/2000US6140952 Delta sigma circuit with pulse width modulated offset
10/31/2000US6140951 Double sampled switched capacitor low pass multirate filter for a ΣΔ D/A converter
10/31/2000US6140950 Delta-sigma modulator with improved full-scale accuracy
10/31/2000US6140875 Device for amplifying digital signals
10/25/2000EP1046233A1 Radio receiver
10/25/2000EP1046232A1 Noise cancellation circuit and quadrature downconverter
10/25/2000CN1271483A Method and apparatus for performance improvement by qualifying pulses in an oversampled, noise-shaping signal processor
10/24/2000US6137429 Circuit and method for attenuating noise in a data converter
10/19/2000WO2000035096A3 Analog-digital converter
10/17/2000US6134430 Programmable dynamic range receiver with adjustable dynamic range analog to digital converter
10/17/2000CA2215807C Hybrid analog-to-digital converter for low power applications, such as use in an implantable medical device
10/12/2000WO2000060745A1 Hybrid low-pass sigma-delta modulator
10/12/2000WO2000060326A1 Digital phase sensitive rectification of ac driven transducer signals
10/11/2000CN1269641A Circuit for attenuating noise in data converter and method thereof
10/10/2000US6130633 Multibit digital to analog converter with feedback across the discrete time/continuous time interface
10/05/2000WO2000059111A1 Converter
10/04/2000EP1040587A1 Receiver with sigma-delta analog-to-digital converter
10/03/2000US6127958 Analog/digital converting circuit
09/2000
09/28/2000WO2000057558A2 1bit digital-analog converter circuit
09/28/2000WO2000057549A1 Filter for digital to analog converters
09/27/2000EP1038360A1 Programmable dynamic range receiver
09/26/2000US6124816 One bit digital to analog converter with relaxed filtering requirements
09/26/2000US6124815 Digital to analog converter for correcting for non-linearities in analog devices
09/26/2000US6124814 Digital to analog converter having improved noise and linearity performance
09/21/2000WO2000055977A1 Radio receiver
09/21/2000WO2000055966A1 Power supply compensation for noise shaped, digital amplifiers
09/20/2000EP1036435A2 Receiver having integrated mixer and sigma-delta analog-to-digital conversion
09/19/2000US6121910 Frequency translating sigma-delta modulator
09/19/2000US6121909 One bit digital to analog converter with feedback across the discrete time/continuous time interface
09/12/2000US6118399 Coarse/fine switching on digital-to-analog conversion output
09/08/2000WO2000052867A1 Frequency-shaped pseudo-random chopper stabilization circuit and method for delta-sigma modulator
09/06/2000EP1033816A1 D/A conversion apparatus
09/06/2000EP0978165A4 Delta-sigma pwm dac for reduced switching
09/05/2000US6115731 Scalable overflow clamp and method for a digital gain scaler/summer
09/05/2000US6114981 D/A converter
08/2000
08/31/2000WO2000051240A1 Methods and apparatus for correction of higher order delta sigma convertors
08/29/2000US6111532 Waveform shaper and sigma-delta D/A converter
08/29/2000US6111531 Parallel architecture for a bandpass sigma-delta modulator
08/29/2000US6111529 Accurate gain calibration of analog to digital converters
08/24/2000DE19854124C1 Sigma-Delta D/A-Wandler Sigma-delta D / A converter
08/22/2000US6107947 Parallel sigma delta modulator
08/22/2000US6107871 Double sampling analog low pass filter
08/16/2000EP1027771A1 Beamformed ultrasonic imager with delta-sigma feedback control
08/15/2000US6104330 Digital to analogue and analogue to digital converters
08/15/2000US6104329 Floating type analog-to-digital converter using delay units to achieve a wide dynamic range
08/10/2000WO2000046610A1 Automatic test equipment using sigma delta modulation to create reference levels
08/10/2000WO2000008765A3 Delta-sigma a/d converter
08/09/2000CN1262432A Method for eliminating low-frequency noise and related CMOS testing circuit
08/08/2000US6100835 Multi-symbol analysis for digital symbol determination
08/08/2000US6100834 Recursive multi-bit ADC with predictor
08/03/2000WO1999048202A3 Converter with programmable gain control
08/02/2000EP1024348A2 Low-frequency noise removing method and a related CMOS sensing circuit
08/01/2000US6097325 Synchronous sigma delta modulator including a decision circuit using a polyphase sampler
08/01/2000US6097251 Pre-recorded sigma delta values for power amplifier control
07/2000
07/27/2000WO2000044098A1 Residue-compensating a / d converter
07/26/2000EP1021885A1 Digital phase discrimination based on frequency sampling
07/26/2000EP1021876A1 Signal processing method and device
07/25/2000US6094458 Arrangements and methods for generating a radio frequency signal
07/20/2000WO2000021337A3 Integrated audio mixer with alternating quantization output
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