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Class Information
Number: 341/143
Name: Coded data generation or conversion > Analog to or from digital conversion > Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation)
Description: Subject matter wherein the analog signal which is to be encoded or decoded depends on the difference between a given analog signal and the analog signal previously encoded or decoded.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6429797 |
Decimation filter for a bandpass delta-sigma ADC |
Aug. 6, 2002 |
| 6430229 |
Capacitive isolation system with digital communication and power transfer |
Aug. 6, 2002 |
| 6426714 |
Multi-level quantizer with current mode DEM switch matrices and separate DEM decision logic for a multibit sigma delta modulator |
Jul. 30, 2002 |
| 6426978 |
Digital communication systems and methods for differential and/or amplitude encoding and decoding secondary symbols |
Jul. 30, 2002 |
| 6424279 |
Sigma-delta analog-to-digital converter using mixed-mode integrator |
Jul. 23, 2002 |
| 6424280 |
Signal clipping circuit for switched capacitor sigma delta analog to digital converters |
Jul. 23, 2002 |
| 6420987 |
Hysteresis in an oversampled data conveter |
Jul. 16, 2002 |
| 6420991 |
Dynamic element matching for converting element mismatch into white noise for a pipelined analog to digital converter |
Jul. 16, 2002 |
| 6417792 |
Single phase bi-directional electrical measurement systems and methods using ADCs |
Jul. 9, 2002 |
| 6417793 |
Track/attenuate circuit and method for switched current source DAC |
Jul. 9, 2002 |
| 6414613 |
Apparatus for noise shaping a pulse width modulation (PWM) signal and method therefor |
Jul. 2, 2002 |
| 6414614 |
Power output stage compensation for digital output amplifiers |
Jul. 2, 2002 |
| 6414615 |
Excess delay compensation in a delta sigma modulator analog-to-digital converter |
Jul. 2, 2002 |
| 6411232 |
Method and system for determining an element conversion characteristic contemporaneous with converting and input signal in a signal converter |
Jun. 25, 2002 |
| 6411242 |
Oversampling analog-to-digital converter with improved DC offset performance |
Jun. 25, 2002 |
| 6407682 |
High speed serial-deserializer receiver |
Jun. 18, 2002 |
| 6407689 |
Method and apparatus for controlling stages of a multi-stage circuit |
Jun. 18, 2002 |
| 6408031 |
Single bit Sigma Delta filter with input gain |
Jun. 18, 2002 |
| 6404276 |
Integrated filter tuning method and apparatus |
Jun. 11, 2002 |
| 6404356 |
Wave demodulation processor |
Jun. 11, 2002 |
| 6404357 |
Digital/analogue communication system for increasing transfer efficiency of digital sample data |
Jun. 11, 2002 |
| 6404364 |
Multistage converter employing digital dither |
Jun. 11, 2002 |
| 6404367 |
Sigma-delta modulator with improved gain accuracy |
Jun. 11, 2002 |
| 6404368 |
Analog and digital .DELTA..SIGMA. modulator |
Jun. 11, 2002 |
| 6404369 |
Digital to analog converter employing sigma-delta loop and feedback DAC model |
Jun. 11, 2002 |
| 6404370 |
Semiconductor integrated circuit realizing electrical interface |
Jun. 11, 2002 |
| 6400294 |
Method of muting a digital signal and a digital signal recording apparatus and a digital signal processing apparatus employing the digital signal muting method |
Jun. 4, 2002 |
| 6400295 |
Transducer interface arrangement including a sigma-delta modulator with offset correction and with gain setting |
Jun. 4, 2002 |
| 6400296 |
Robust continuous variable slope delta demodulation |
Jun. 4, 2002 |
| 6400297 |
Method and system for operating two or more integrators with different power supplies for an analog-to-digital delta-sigma modulator |
Jun. 4, 2002 |
| 6396421 |
Method and system for sampling rate conversion in digital audio applications |
May. 28, 2002 |
| 6396428 |
Continuous time bandpass delta sigma modulator ADC architecture with feedforward signal compensation |
May. 28, 2002 |
| 6392493 |
Fractional-N frequency synthesizer |
May. 21, 2002 |
| 6392576 |
Multiplierless interpolator for a delta-sigma digital to analog converter |
May. 21, 2002 |
| 6388597 |
.DELTA.-.SIGMA. modulator and .DELTA.-.SIGMA. A/D converter |
May. 14, 2002 |
| 6388601 |
Delay compensation for analog-to-digital converter in sigma-delta modulators |
May. 14, 2002 |
| 6384761 |
Second and higher order dynamic element matching in multibit digital to analog and analog to digital data converters |
May. 7, 2002 |
| 6380878 |
Digital-to-analog conversion circuit |
Apr. 30, 2002 |
| 6377194 |
Analog computation device using separated analog signals, each having a specified amount of resolution, and signal restoration devices |
Apr. 23, 2002 |
| 6377198 |
Definition of physical level of a logic output by a logic input |
Apr. 23, 2002 |
| 6373416 |
Lookahead sigma-delta modulator |
Apr. 16, 2002 |
| 6373417 |
Digital to analog converter using level and timing control signals to cancel noise |
Apr. 16, 2002 |
| 6373418 |
Nyquist response restoring delta-sigma modulator based analog to digital and digital to analog conversion |
Apr. 16, 2002 |
| 6369729 |
Common mode shift in downstream integrators of high order delta sigma modulators |
Apr. 9, 2002 |
| 6369730 |
Sigma-delta analog-to-digital converter |
Apr. 9, 2002 |
| 6369731 |
Delta sigma D/A converter |
Apr. 9, 2002 |
| 6369732 |
Low voltage fully differential analog-to-digital converter |
Apr. 9, 2002 |
| 6369733 |
Method and system for operating two or more dynamic element matching (DEM) components with different power supplies for a delta-sigma modulator of an analog-to-digital converter |
Apr. 9, 2002 |
| 6369735 |
Digital-to-analog converter with high dynamic range |
Apr. 9, 2002 |
| 6369740 |
Programmable gain preamplifier coupled to an analog to digital converter |
Apr. 9, 2002 |
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