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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 |
| 6593865 |
Rapid multiplexing analog to digital converter |
Jul. 15, 2003 |
| 6593866 |
Signal processors |
Jul. 15, 2003 |
| 6593870 |
MEMS-based electrically isolated analog-to-digital converter |
Jul. 15, 2003 |
| 6590512 |
Developing a desired output sampling rate for oversampled converters |
Jul. 8, 2003 |
| 6590513 |
Data acquisition system using predictive conversion |
Jul. 8, 2003 |
| 6590516 |
Current steering type D/A converter |
Jul. 8, 2003 |
| 6590518 |
Apparatus and method for an improved subranging ADC architecture using ladder-flip bussing |
Jul. 8, 2003 |
| 6587060 |
Multi-bit monotonic quantizer and linearized delta-sigma modulator based analog-to-digital and digital-to analog conversion |
Jul. 1, 2003 |
| 6587061 |
Analog computation circuits using synchronous demodulation and power meters and energy meters using the same |
Jul. 1, 2003 |
| 6587062 |
Flexible interface circuit and method for delta sigma A/D converters |
Jul. 1, 2003 |
| 6587063 |
Four-order sigma-delta modulator |
Jul. 1, 2003 |
| 6583741 |
System and method for self-calibrating a multi-bit delta-sigma analog to digital (A/D) converter during operation of the A/D converter |
Jun. 24, 2003 |
| 6583742 |
Digital to analogue converter with dynamic element matching |
Jun. 24, 2003 |
| 6583743 |
Differential bipolar stray-insensitive pipelined digital-to-analog converter |
Jun. 24, 2003 |
| 6584157 |
Receiver having integrated mixer and Sigma-Delta analog-to digital conversion |
Jun. 24, 2003 |
| 6580383 |
High resolution ADC based on an oversampled subranging ADC |
Jun. 17, 2003 |
| 6577257 |
Methods and systems for digital dither |
Jun. 10, 2003 |
| 6577258 |
Adaptive sigma-delta data converter for mobile terminals |
Jun. 10, 2003 |
| 6577259 |
Sigma-delta modulator |
Jun. 10, 2003 |
| 6577910 |
Digital audio signal processors |
Jun. 10, 2003 |
| 6573666 |
Digital regulation of fluorescent lamps |
Jun. 3, 2003 |
| 6570513 |
Isolation system with digital communication across a capacitive barrier |
May. 27, 2003 |
| 6570518 |
Multiple stage delta sigma modulator |
May. 27, 2003 |
| 6570519 |
Switched-capacitor summer circuits and methods and systems using the same |
May. 27, 2003 |
| 6570521 |
Multistage scrambler for a digital to analog converter |
May. 27, 2003 |
| 6567025 |
Multi-bit sigma-delta analog to digital converter with a variable full scale |
May. 20, 2003 |
| 6567027 |
Method and apparatus for analog to digital conversion utilizing a moving sum |
May. 20, 2003 |
| 6567030 |
Sample synthesis for matching digitizers in interleaved systems |
May. 20, 2003 |
| 6563448 |
Flexible sample rate converter for multimedia digital-to-analog conversion in a wireless telephone |
May. 13, 2003 |
| 6556159 |
Variable order modulator |
Apr. 29, 2003 |
| 6556160 |
Circuit for converting an analog signal to a PWM signal |
Apr. 29, 2003 |
| 6556161 |
Digital to analog converter employing dynamic element matching |
Apr. 29, 2003 |
| 6552675 |
Electrical protection device with analog-to-digital converter of the sigma-delta type |
Apr. 22, 2003 |
| 6552676 |
Method and apparatus for power reduction in switched capacitor circuits |
Apr. 22, 2003 |
| 6549152 |
1-bit digital-analog converter to convert digital information into current and voltage pulses |
Apr. 15, 2003 |
| 6545620 |
Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter |
Apr. 8, 2003 |
| 6545621 |
Digitally programmable pulse-width modulation (PWM) converter |
Apr. 8, 2003 |
| 6545622 |
Low power analog equalizer with current mode digital to analog converter |
Apr. 8, 2003 |
| 6542097 |
Adaptive delta modulation with step size variation responsive to sensed overload |
Apr. 1, 2003 |
| 6542100 |
Apparatus and method for filtering a signal which represents a digital data stream |
Apr. 1, 2003 |
| 6542105 |
A/D converter |
Apr. 1, 2003 |
| 6538588 |
Multi-sampling .SIGMA.-.DELTA. analog-to-digital converter |
Mar. 25, 2003 |
| 6538589 |
Digital .DELTA..SIGMA. modulator and D/A converter using the modulator |
Mar. 25, 2003 |
| 6538592 |
Variable dynamic range analog-to-digital converter |
Mar. 25, 2003 |
| 6535153 |
Adaptive sigma-delta modulation with one-bit quantization |
Mar. 18, 2003 |
| 6535154 |
Enhanced noise-shaped quasi-dynamic-element-matching technique |
Mar. 18, 2003 |
| 6535155 |
Method and apparatus for suppressing tones induced by cyclic dynamic element matching (DEM) algorithms |
Mar. 18, 2003 |
| 6531973 |
Sigma-delta digital-to-analog converter |
Mar. 11, 2003 |
| 6529150 |
Photonic analog to digital conversion based on temporal and spatial oversampling techniques |
Mar. 4, 2003 |
| 6522275 |
Method and apparatus for sample rate conversion for use in an analog to digital converter |
Feb. 18, 2003 |
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