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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 |
| 6784817 |
Data generating method, data generator, and transmitter using the same |
Aug. 31, 2004 |
| 6781533 |
Optically sampled delta-sigma modulator |
Aug. 24, 2004 |
| 6781534 |
System and method for divisor threshold control in a modulation domain divider |
Aug. 24, 2004 |
| 6778106 |
Digital sample sequence conversion device |
Aug. 17, 2004 |
| 6778112 |
Adaptive decoding method and apparatus for frequency shift key signals |
Aug. 17, 2004 |
| 6778118 |
Thermometer code digital to audio converter |
Aug. 17, 2004 |
| 6779005 |
Method and device for detecting random missing code |
Aug. 17, 2004 |
| 6774830 |
Methods and systems for digital dither |
Aug. 10, 2004 |
| 6774832 |
Multi-bit output DDS with real time delta sigma modulation look up from memory |
Aug. 10, 2004 |
| 6771199 |
Method and apparatus for mismatched shaping of an oversampled converter |
Aug. 3, 2004 |
| 6768435 |
Bandpass sigma-delta modulator |
Jul. 27, 2004 |
| 6768436 |
Method and circuit resetting delta sigma modulator |
Jul. 27, 2004 |
| 6768437 |
Switched voltage-mode dither signal generation for a sigma-delta modulator |
Jul. 27, 2004 |
| 6765517 |
Variable order sigma-delta modulator |
Jul. 20, 2004 |
| 6765518 |
Method and apparatus for efficient mixed signal processing in a digital amplifier |
Jul. 20, 2004 |
| 6765519 |
System and method for designing and using analog circuits operating in the modulation domain |
Jul. 20, 2004 |
| 6765520 |
Method and circuit for jamming digital filter while resetting delta sigma modulator |
Jul. 20, 2004 |
| 6762702 |
Shuffler apparatus and related dynamic element matching technique for linearization of unit-element digital-to-analog converters |
Jul. 13, 2004 |
| 6762703 |
Sigma delta modulator |
Jul. 13, 2004 |
| 6762704 |
Modulation of a digital input signal using multiple digital signal modulators |
Jul. 13, 2004 |
| 6756927 |
Sigma-delta programming device for a PLL frequency synthesizer, configuration using the sigma-delta programming device, PLL frequency device, and method for programming a programmable device |
Jun. 29, 2004 |
| 6753798 |
Filter configuration, method for filtering an analog filter input signal, and power factor controller |
Jun. 22, 2004 |
| 6753799 |
Randomizer for sigma-delta-type converter |
Jun. 22, 2004 |
| 6750793 |
Decimation filter and interpolation filter |
Jun. 15, 2004 |
| 6750794 |
Application of single flux quantum pulse interaction to the simultaneous sampling in-phase and quadrature analog-to-digital converter |
Jun. 15, 2004 |
| 6750795 |
Gain scaling for higher signal-to-noise ratios in multistage, multi-bit delta sigma modulators |
Jun. 15, 2004 |
| 6750796 |
Low noise correlated double sampling modulation system |
Jun. 15, 2004 |
| 6747583 |
COMPENSATING CIRCUIT FOR USE IN A SWITCH CIRCUIT COMPRISING SCALED CURRENT STEERING SWITCHES, A SWITCH CIRCUIT COMPRISING THE COMPENSATING CIRCUIT, AND A METHOD FOR MINIMISING TIME-SKEW IN SWI |
Jun. 8, 2004 |
| 6747584 |
Aggregate beamformer for use in a directional receiving array |
Jun. 8, 2004 |
| 6747586 |
Signal processing device having a D/A converter with a reduced circuit area without sacrificing the resolution |
Jun. 8, 2004 |
| 6748025 |
Direct conversion delta-sigma receiver |
Jun. 8, 2004 |
| 6744389 |
A/D-converter with lookup table |
Jun. 1, 2004 |
| 6744392 |
Noise shapers with shared and independent filters and multiple quantizers and data converters and methods using the same |
Jun. 1, 2004 |
| 6741123 |
Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
May. 25, 2004 |
| 6741196 |
Method and apparatus for a high-drive current digital-to-analog converter |
May. 25, 2004 |
| 6741197 |
Digital-to-analog converter (DAC) output stage |
May. 25, 2004 |
| 6741200 |
Method and apparatus of stage amplifier of analog to digital converter |
May. 25, 2004 |
| 6738002 |
SD-ADC with digital dither signal processing |
May. 18, 2004 |
| 6738003 |
Delta-sigma modulation circuits and methods utilizing multiple noise attenuation bands and data converters using the same |
May. 18, 2004 |
| 6738004 |
Method and system of integrating a mismatch noise shaper into the main loop of a delta-sigma modulator |
May. 18, 2004 |
| 6734814 |
Modulator |
May. 11, 2004 |
| 6734816 |
D/A converter with high jitter resistance |
May. 11, 2004 |
| 6734817 |
A/D converter, method of A/D conversion, and signal processing device |
May. 11, 2004 |
| 6731161 |
Method for measuring the frequency response of a transimpedance amplifier packaged with an integrated limiter |
May. 4, 2004 |
| 6727832 |
Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same |
Apr. 27, 2004 |
| 6727833 |
Adaptive .SIGMA..DELTA. modulation with one-bit quantization |
Apr. 27, 2004 |
| 6727834 |
Method and device for use in DC parametric tests |
Apr. 27, 2004 |
| 6727838 |
Tracking analog-to-digital converter |
Apr. 27, 2004 |
| 6724332 |
Noise shaping circuits and methods with feedback steering overload compensation and systems using the same |
Apr. 20, 2004 |
| 6720897 |
State-delayed technique and system to remove tones of dynamic element matching |
Apr. 13, 2004 |
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