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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 |
| 6522276 |
System of DAC correction for a .DELTA..SIGMA. modulator |
Feb. 18, 2003 |
| 6522277 |
Circuit, system and method for performing dynamic element matching using bi-directional rotation within a data converter |
Feb. 18, 2003 |
| 6522278 |
Digital-to-analog converter with power up/down transient suppression and automatic rate switching |
Feb. 18, 2003 |
| 6518899 |
Method and apparatus for spectral shaping of non-linearity in data converters |
Feb. 11, 2003 |
| 6518903 |
Analog-to-digital converter |
Feb. 11, 2003 |
| 6518904 |
Cascade sigma-delta modulator |
Feb. 11, 2003 |
| 6518905 |
Parallel time interleaved delta sigma modulator |
Feb. 11, 2003 |
| 6515540 |
High order multi-path operational amplifier with output saturation recovery |
Feb. 4, 2003 |
| 6515601 |
Noise shaper |
Feb. 4, 2003 |
| 6515603 |
Sigma delta modulator with buried data |
Feb. 4, 2003 |
| 6515604 |
Mixed signal processing unit with improved distortion and noise characteristics |
Feb. 4, 2003 |
| 6515605 |
Base station having high speed, high resolution, digital-to-analog converter with off-line sigma delta conversion and storage |
Feb. 4, 2003 |
| 6515606 |
Analog to digital converter |
Feb. 4, 2003 |
| 6515607 |
Delta-sigma modulator |
Feb. 4, 2003 |
| 6515608 |
Digital-analog converter and method, and data interpolation device and method |
Feb. 4, 2003 |
| 6515612 |
Method and system to reduce signal-dependent charge drawn from reference voltage in switched capacitor circuits |
Feb. 4, 2003 |
| 6509850 |
Method and system for sampling rate conversion in digital audio applications |
Jan. 21, 2003 |
| 6509852 |
Apparatus and method for gain calibration technique for analog-to-digital converter |
Jan. 21, 2003 |
| 6509854 |
DA conversion circuit |
Jan. 21, 2003 |
| 6509857 |
Digital-to-analog converting method and digital-to-analog converter |
Jan. 21, 2003 |
| 6507297 |
System and method for variable gain coder-decoder |
Jan. 14, 2003 |
| 6507299 |
Embedding supplemental data in an information signal |
Jan. 14, 2003 |
| 6507300 |
Variable rate decimator |
Jan. 14, 2003 |
| 6507301 |
Sigma-delta modulator with an adjustable feedback factor |
Jan. 14, 2003 |
| 6507302 |
Multi-bit .DELTA..SIGMA. A/D converter |
Jan. 14, 2003 |
| 6507304 |
Current steering segmented DAC system |
Jan. 14, 2003 |
| 6507305 |
Pipelined analog-to-digital converter with noise shaping |
Jan. 14, 2003 |
| 6504498 |
Method and apparatus for offset cancellation in a wireless receiver |
Jan. 7, 2003 |
| 6501400 |
Correction of operational amplifier gain error in pipelined analog to digital converters |
Dec. 31, 2002 |
| 6501403 |
Calibrated encoder multiplier |
Dec. 31, 2002 |
| 6501404 |
System and method for encoding an input data stream by utilizing a predictive, look-ahead feature |
Dec. 31, 2002 |
| 6501405 |
Method and apparatus for digital to analog conversion with distortion calibration |
Dec. 31, 2002 |
| 6501406 |
Digital filter |
Dec. 31, 2002 |
| 6501407 |
Digital to analog converter |
Dec. 31, 2002 |
| 6498572 |
Method and apparatus for delta modulator and sigma delta modulator |
Dec. 24, 2002 |
| 6498573 |
Sigma-delta A/D converter |
Dec. 24, 2002 |
| 6498819 |
Integrated multi-mode bandpass sigma-delta receiver subsystem with interference mitigation and method of using same |
Dec. 24, 2002 |
| 6496128 |
Sigma-delta analog-to-digital converter array |
Dec. 17, 2002 |
| 6492924 |
Circuits, systems, and methods for signal processors that buffer a signal dependent current |
Dec. 10, 2002 |
| 6492925 |
Ultra-wide band (20 MHz to 5 GHz) analog to digital signal processor |
Dec. 10, 2002 |
| 6492926 |
Noise compensation device and method in a discrete time control system |
Dec. 10, 2002 |
| 6489906 |
.DELTA..SIGMA. type A/D converter |
Dec. 3, 2002 |
| 6489907 |
Method of re-establishing the stability of a sigma-delta modulator and a circuit for implementing the method |
Dec. 3, 2002 |
| 6489908 |
Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma-delta conversion and storage |
Dec. 3, 2002 |
| 6489909 |
Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal |
Dec. 3, 2002 |
| 6489910 |
Oversampling circuit and digital/analog converter |
Dec. 3, 2002 |
| 6489913 |
Sub-ranging analog-to-digital converter using a sigma delta converter |
Dec. 3, 2002 |
| 6486810 |
Method and apparatus for continuously variable slope delta modulation coding of signals |
Nov. 26, 2002 |
| 6486811 |
Offset-free analog-to-digital converter |
Nov. 26, 2002 |
| 6486813 |
Oversampling circuit digital/analog converter |
Nov. 26, 2002 |
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