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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 |
| 7248193 |
Delta-sigma modulator and its application to switching amplification circuit |
Jul. 24, 2007 |
| 7245247 |
Analog to digital signal converter having sampling circuit with divided integrating capacitance |
Jul. 17, 2007 |
| 7245246 |
Converter, circuit and method for compensation of non-idealities in continuous time sigma delta converters |
Jul. 17, 2007 |
| 7242337 |
Band-pass .DELTA.-.SIGMA. AD modulator for AD-converting high frequency narrow-band signal with higher precision and lower power consumption |
Jul. 10, 2007 |
| 7242336 |
Continuous-time delta-sigma ADC for a radio receiver employing 200 kHz IF |
Jul. 10, 2007 |
| 7242334 |
Wireless receiver circuit with merged ADC and filter |
Jul. 10, 2007 |
| 7242332 |
Column-parallel sigma-delta analog-to-digital conversion with gain and offset control |
Jul. 10, 2007 |
| 7236116 |
Reconfigurable switched-capacitor input circuit with digital-stimulus acceptability for analog tests |
Jun. 26, 2007 |
| 7236113 |
Capacitance-to-digital modulator with sensor failure-mode detection |
Jun. 26, 2007 |
| 7236112 |
Self-tuning output digital filter for direct conversion delta-sigma transmitter |
Jun. 26, 2007 |
| 7236110 |
Sample rate converter for reducing the sampling frequency of a signal by a fractional number |
Jun. 26, 2007 |
| 7235983 |
One terminal capacitor interface circuit |
Jun. 26, 2007 |
| 7233271 |
Noise shaper circuit and method for reducing switching noise |
Jun. 19, 2007 |
| 7233268 |
Multi-stage sample rate converter |
Jun. 19, 2007 |
| 7230559 |
Quantizer in a multilevel sigma-delta analogue/digital converter |
Jun. 12, 2007 |
| 7230557 |
Audio codec adapted to dual bit-streams and methods for use therewith |
Jun. 12, 2007 |
| 7230556 |
Analog signal generation using a delta-sigma modulator |
Jun. 12, 2007 |
| 7230555 |
Sigma delta converter with flying capacitor input |
Jun. 12, 2007 |
| 7230553 |
Parallel source/capture architecture |
Jun. 12, 2007 |
| 7227489 |
Digital data acquisition system |
Jun. 5, 2007 |
| 7227487 |
Digital saturation handling in integral noise shaping of pulse width modulation |
Jun. 5, 2007 |
| 7227482 |
Complex band-pass filter for use in digital radio receiver and complex band-pass .DELTA.-.SIGMA. AD modulator using the same |
Jun. 5, 2007 |
| 7227481 |
Feedback DAC chopper stabilization in a CT single-ended multi-bit sigma delta ADC |
Jun. 5, 2007 |
| 7227478 |
Sample rate converter with selectable sampling rate and timing reference |
Jun. 5, 2007 |
| 7225136 |
Data compression and expansion of an audio signal |
May. 29, 2007 |
| 7224728 |
Pulse width modulator and pulse width modulation method |
May. 29, 2007 |
| 7224305 |
Analog-to-digital modulation |
May. 29, 2007 |
| 7224304 |
Method and apparatus for an image canceling digital-to-analog converter (DAC) |
May. 29, 2007 |
| 7224302 |
Integrated PM/FM modulator using direct digital frequency synthesis and method therefor |
May. 29, 2007 |
| 7224299 |
System and method for adjusting dither in a delta sigma modulator |
May. 29, 2007 |
| 7221303 |
Delta sigma modulator analog-to-digital converters with multiple threshold comparisons during a delta sigma modulator output cycle |
May. 22, 2007 |
| 7221302 |
Delta-sigma modulator coefficient calibration method and apparatus |
May. 22, 2007 |
| 7221301 |
Method and system for mitigating background noise for a Sigma-Delta digital-to-analog converter |
May. 22, 2007 |
| 7221297 |
D/A converter and output amplifying circuit |
May. 22, 2007 |
| 7218262 |
Modulation system |
May. 15, 2007 |
| 7215270 |
Sigma-delta modulator having selectable OSR with optimal resonator coefficient |
May. 8, 2007 |
| 7215269 |
Delta-sigma analog-to-digital converter suitable for use in a radio receiver channel |
May. 8, 2007 |
| 7215267 |
Analog-to-digital converter with dither control |
May. 8, 2007 |
| 7215262 |
Digital signal processing apparatus and digital signal processing method |
May. 8, 2007 |
| 7212874 |
Noise-shapers and filters with noise shaping quantizers and systems and methods using the same |
May. 1, 2007 |
| 7212142 |
Methods and systems for high speed quantizers |
May. 1, 2007 |
| 7212138 |
Delay-based analog-to-digital converter |
May. 1, 2007 |
| 7212137 |
Delta sigma modulator with integral decimation |
May. 1, 2007 |
| 7209067 |
Extended dynamic range consecutive edge modulation (CEM) method and apparatus |
Apr. 24, 2007 |
| 7209063 |
Semiconductor integrated circuit having switch circuit of digital signal |
Apr. 24, 2007 |
| 7206370 |
Clock recovery circuit |
Apr. 17, 2007 |
| 7205919 |
Digital signal processing apparatus and digital signal processing method |
Apr. 17, 2007 |
| 7205918 |
Hearing aid device with an output amplifier having a sigma-delta modulator |
Apr. 17, 2007 |
| 7205917 |
Pulse width modulator quantisation circuit |
Apr. 17, 2007 |
| 7199739 |
Programmable sample rate analog to digital converter and method for use therewith |
Apr. 3, 2007 |
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