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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 |
| RE40971 |
Direct drive programmable high speed power digital-to-analog converter |
Nov. 17, 2009 |
| 7619551 |
Audio codec, digital device and voice processing method |
Nov. 17, 2009 |
| 7619550 |
Delta-sigma AD converter apparatus using delta-sigma modulator circuit provided with reset circuit resetting integrator |
Nov. 17, 2009 |
| 7619549 |
Methods and systems for reducing a sign-bit pulse at a voltage output of a sigma-delta digital-to-analog converter |
Nov. 17, 2009 |
| 7616143 |
Reconfigurable delta sigma analog-to-digital converter and customized digital filters with embedded flash FPGA and flash memory |
Nov. 10, 2009 |
| 7616142 |
Sigma-delta modulated analog-to-digital converter having a changeable coefficient |
Nov. 10, 2009 |
| 7616141 |
Digital-to-analog converter |
Nov. 10, 2009 |
| 7609189 |
Interface for hybrid sigma-delta data converter |
Oct. 27, 2009 |
| 7609188 |
Multi-standard analog-to-digital data conversion |
Oct. 27, 2009 |
| 7609187 |
.DELTA..SIGMA. modulator and .DELTA..SIGMA. analog-digital converter |
Oct. 27, 2009 |
| 7605733 |
Radio frequency .SIGMA..DELTA.-modulator |
Oct. 20, 2009 |
| 7605730 |
Analog-digital converting apparatus and radio communication terminal |
Oct. 20, 2009 |
| 7602325 |
Sigma delta analog to digital converter with internal synchronous demodulation |
Oct. 13, 2009 |
| 7602252 |
Sigma delta modulator, fractional frequency synthesizer and sigma delta modulating method |
Oct. 13, 2009 |
| 7598897 |
Superconductor analog-to-digital converter |
Oct. 6, 2009 |
| 7592941 |
Signal processing apparatus and signal processing method |
Sep. 22, 2009 |
| 7590500 |
System for high dynamic range analysis in flow cytometry |
Sep. 15, 2009 |
| 7589649 |
Apparatus, method, and system for correction of baseline wander |
Sep. 15, 2009 |
| 7586429 |
Scrambling system for high resolution ditigal-to-analog converter |
Sep. 8, 2009 |
| 7583215 |
Semiconductor integrated circuit |
Sep. 1, 2009 |
| 7583214 |
Dynamic receive beamformer with oversampling for medical diagnostic ultrasound |
Sep. 1, 2009 |
| 7583213 |
Signal processing system capable of changing signal levels |
Sep. 1, 2009 |
| 7580491 |
Quarter-rate clock recovery circuit and clock recovering method using the same |
Aug. 25, 2009 |
| 7576673 |
Increasing the dynamic range of pulse width modulation in analog to digital converters |
Aug. 18, 2009 |
| 7576672 |
Adaptive Dynamic Range Control |
Aug. 18, 2009 |
| 7576671 |
Mismatch-shaping dynamic element matching systems and methods for multi-bit sigma-delta data converters |
Aug. 18, 2009 |
| 7576670 |
Sigma-delta analog-digital converter for an xDSL multistandard input stage |
Aug. 18, 2009 |
| 7576605 |
Low power output stage |
Aug. 18, 2009 |
| 7570693 |
Low noise digital to pulse width modulated converter with audio applications |
Aug. 4, 2009 |
| 7570186 |
A/D converters based on sigma delta modulators and iterative methods |
Aug. 4, 2009 |
| 7570182 |
Adaptive spectral noise shaping to improve time to digital converter quantization resolution using dithering |
Aug. 4, 2009 |
| 7567194 |
Delta sigma modulator and delta sigma A/D converter |
Jul. 28, 2009 |
| 7567193 |
Continuous time delta-sigma modulator and electronic circuit including the same |
Jul. 28, 2009 |
| 7567192 |
Sigma-delta modulator |
Jul. 28, 2009 |
| 7567056 |
Quantum generator and related devices of energy extraction and conversion |
Jul. 28, 2009 |
| 7564389 |
Discrete-time, single-amplifier, second-order, delta-sigma analog-to-digital converter and method of operation thereof |
Jul. 21, 2009 |
| 7564388 |
Power efficient equalizer design |
Jul. 21, 2009 |
| 7561635 |
Variable coder apparatus for resonant power conversion and method |
Jul. 14, 2009 |
| 7561088 |
Multi-loop data weighted averaging in a delta-sigma DAC |
Jul. 14, 2009 |
| 7561086 |
Electronic circuit for the analog-to-digital conversion of an analog input signal |
Jul. 14, 2009 |
| 7557742 |
Pipelined/cyclic architectures for analog-digital signal conversion |
Jul. 7, 2009 |
| 7557741 |
Overload detection unit with signal strength indicator to indicate an overload condition |
Jul. 7, 2009 |
| 7554474 |
Feedforward sigma-delta ad converter with an optimized built-in filter function |
Jun. 30, 2009 |
| 7554473 |
Control system using a nonlinear delta-sigma modulator with nonlinear process modeling |
Jun. 30, 2009 |
| 7554472 |
Sigma-delta modulator |
Jun. 30, 2009 |
| 7551110 |
Chopping and oversampling ADC having reduced low frequency drift |
Jun. 23, 2009 |
| 7548180 |
Method and system for digital to analog conversion for power amplifier driver amplitude modulation |
Jun. 16, 2009 |
| 7548179 |
MASH sigma delta modulator |
Jun. 16, 2009 |
| 7548178 |
Method and apparatus for ADC size and performance optimization |
Jun. 16, 2009 |
| 7545303 |
Sigma-delta difference-of-squares RMS-to-DC converter with forward and feedback paths signal squaring |
Jun. 9, 2009 |
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