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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 |
| 7479910 |
Capacitive digital-to-analog converter reset in an implantable medical device analog-to-digital converter |
Jan. 20, 2009 |
| 7479840 |
Digital pulse width controlled oscillation modulator |
Jan. 20, 2009 |
| 7477175 |
Sigma delta analog to digital converter and a method for analog to digital conversion |
Jan. 13, 2009 |
| 7474716 |
Data recovery circuits using oversampling for maverick edge detection/suppression |
Jan. 6, 2009 |
| 7474247 |
Detecting overloading of an analog-to-digital converter of an implantable medical device |
Jan. 6, 2009 |
| 7474242 |
Operational amplifier and operating method thereof |
Jan. 6, 2009 |
| 7474241 |
Delta-sigma modulator provided with a charge sharing integrator |
Jan. 6, 2009 |
| 7471225 |
Transmitter digital-to-analog converter with noise shaping |
Dec. 30, 2008 |
| 7471223 |
Delta-sigma modulator circuits in which DITHER is added to the quantization levels of methods of operating the same |
Dec. 30, 2008 |
| 7466257 |
Delta-sigma AD converter |
Dec. 16, 2008 |
| 7466256 |
Universal ultrasound sigma-delta receiver path |
Dec. 16, 2008 |
| 7466255 |
Multiplexed-input-separated .SIGMA.-.DELTA. analog-to-digital converter for pixel-level analog-to-digital conversion utilizing a feedback DAC separation |
Dec. 16, 2008 |
| 7466254 |
Systems and methods for digital control utilizing oversampling |
Dec. 16, 2008 |
| 7460046 |
Sigma-delta modulators |
Dec. 2, 2008 |
| 7456771 |
Sigma-delta modulator |
Nov. 25, 2008 |
| 7456770 |
Distributed sigma-delta sensor network |
Nov. 25, 2008 |
| 7456769 |
Reference voltage generating circuit |
Nov. 25, 2008 |
| 7456766 |
Sigma-delta modulation with offset |
Nov. 25, 2008 |
| 7454431 |
Method and apparatus for window matching in delta compressors |
Nov. 18, 2008 |
| 7453382 |
Method and apparatus for A/D conversion |
Nov. 18, 2008 |
| 7453381 |
Power-saving multibit delta-sigma converter |
Nov. 18, 2008 |
| 7450648 |
Digital signal processing device, a method and a delta-sigma modulator using the same method |
Nov. 11, 2008 |
| 7450047 |
Sigma-delta modulator with DAC resolution less than ADC resolution and increased dynamic range |
Nov. 11, 2008 |
| 7450046 |
Delta-sigma modulator and A/D converter |
Nov. 11, 2008 |
| 7450045 |
Delta-Sigma analog-to-digital converter and method thereof |
Nov. 11, 2008 |
| 7450036 |
Sample rate converter having a zero-phase filter |
Nov. 11, 2008 |
| 7446688 |
Sequence generation for mismatch-shaping circuits |
Nov. 4, 2008 |
| 7446687 |
Method and apparatus to reduce internal circuit errors in a multi-bit delta-sigma modulator |
Nov. 4, 2008 |
| 7446686 |
Incremental delta-sigma data converters with improved stability over wide input voltage ranges |
Nov. 4, 2008 |
| 7443328 |
Apparatus and method of using spread pulse modulation to increase the control resolution of an electronic device |
Oct. 28, 2008 |
| 7443325 |
Sigma-delta modulator |
Oct. 28, 2008 |
| 7443324 |
Apparatus and method for dithering a sigma-delta modulator |
Oct. 28, 2008 |
| 7443322 |
Device for testing an analog-to-digital converter |
Oct. 28, 2008 |
| 7439893 |
Delta sigma modulation D/A converting system |
Oct. 21, 2008 |
| 7439892 |
Variable voltage generator for delta-sigma modulators |
Oct. 21, 2008 |
| 7439891 |
Methods and apparatus for sigma-delta modulator having selectable OSR with optimal resonator coefficient |
Oct. 21, 2008 |
| 7439890 |
.DELTA..SIGMA. analog to digital converter system with automatic gain control responsive to out-of-band interferers |
Oct. 21, 2008 |
| 7439889 |
AD converter |
Oct. 21, 2008 |
| 7439440 |
Audio player using sigma-delta pulse-width modulation |
Oct. 21, 2008 |
| 7436344 |
Pipeline A/D converter |
Oct. 14, 2008 |
| 7436338 |
Current mode sigma-delta modulator |
Oct. 14, 2008 |
| 7436337 |
Transmitter digital-to-analog converter with noise shaping |
Oct. 14, 2008 |
| 7436336 |
Analog digital converter (ADC) having improved stability and signal to noise ratio (SNR) |
Oct. 14, 2008 |
| 7432842 |
Multi-channel pulse width modulated signal interleave and inversion |
Oct. 7, 2008 |
| 7432841 |
Delta-sigma analog-to-digital converter with pipelined multi-bit quantization |
Oct. 7, 2008 |
| 7432840 |
Multi-bit sigma/delta converter |
Oct. 7, 2008 |
| 7429941 |
Stabilization of sigma-delta converters |
Sep. 30, 2008 |
| 7429940 |
Delta-sigma modulator circuit with limiter and method therefor |
Sep. 30, 2008 |
| 7428692 |
Parallel precoder circuit |
Sep. 23, 2008 |
| 7425911 |
Signal-to-noise ratio when using fewer bits than the number of output bits of an analog to digital converter |
Sep. 16, 2008 |
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