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Class Information
Number: 341/167
Name: Coded data generation or conversion > Analog to or from digital conversion > Analog to digital conversion > Intermediate conversion to time interval > Dual slope
Description: Subject matter wherein the input analog signal is integrated for a fixed time interval following which there is a linear return of the integrated signal to the datum level by means of an applied reference signal; the order of application of the two signals may be reversed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616147 |
Analog-to-digital converter |
Nov. 10, 2009 |
| 7436343 |
Solid state image pickup apparatus, camera and driving method of solid state image pickup apparatus |
Oct. 14, 2008 |
| 7382304 |
Sampling and measurement of periodic signals |
Jun. 3, 2008 |
| 7336213 |
Polarity independent precision measurement of an input voltage signal |
Feb. 26, 2008 |
| 7071862 |
Transmission line analog to digital converter |
Jul. 4, 2006 |
| 7038610 |
Integration type A/D converter, and battery charger utilizing such converter |
May. 2, 2006 |
| 6906648 |
Circuit and method of multi-channel dual slope ADC with offset cancellation and hysteresis input |
Jun. 14, 2005 |
| 6784823 |
Rail to rail dual slope ADC |
Aug. 31, 2004 |
| 6762706 |
Reduced power analog-to-digital converter and method thereof |
Jul. 13, 2004 |
| 6670904 |
Double-ramp ADC for CMOS sensors |
Dec. 30, 2003 |
| 6646586 |
Dual-slope analog-to-digital converter and comparison circuit |
Nov. 11, 2003 |
| 6473018 |
Delta sigma analog-to-digital converter |
Oct. 29, 2002 |
| 6411247 |
Analog/digital converter |
Jun. 25, 2002 |
| 6384760 |
Analog-to-digital converter |
May. 7, 2002 |
| 6285310 |
Integrating analog/digital converter |
Sep. 4, 2001 |
| 6278394 |
Signal processing circuit and method of operation |
Aug. 21, 2001 |
| 6226562 |
Method and system for adjusting and calibrating circuit parameters |
May. 1, 2001 |
| 5784016 |
Self-calibration technique for pipe line A/D converters |
Jul. 21, 1998 |
| 5764541 |
Microprocessor controlled sensor signal conditioning circuit |
Jun. 9, 1998 |
| 5614902 |
Ratiometric analog to digital converter with automatic offset |
Mar. 25, 1997 |
| 5612698 |
Current-input, autoscaling, dual-slope analog-to-digital converter |
Mar. 18, 1997 |
| 5592168 |
High speed dual-slope analog-to-digital converter |
Jan. 7, 1997 |
| 5579194 |
Motor starter with dual-slope integrator |
Nov. 26, 1996 |
| 5519352 |
Integrator system with variable gain feedback |
May. 21, 1996 |
| RE34428 |
Analog-to-digital converter with offset voltage polarity inversion |
Nov. 2, 1993 |
| 5229772 |
Ratiometric ADC with pulse width modulated output for wide temperature range applications |
Jul. 20, 1993 |
| 5229771 |
Analog to digital converter for converting multiple analog input signals to corresponding digital output signals during one conversion cycle |
Jul. 20, 1993 |
| 5194868 |
Dual slope integrating A/C converter |
Mar. 16, 1993 |
| 5184128 |
Integrating A/D converter with means for reducing rollover error |
Feb. 2, 1993 |
| 5144307 |
Method of controlling double integral A-D converter |
Sep. 1, 1992 |
| 5128676 |
Variable conversion rate analog-to-digital converter |
Jul. 7, 1992 |
| 5121120 |
Programmable digital measuring and control instrument for a vacuum gauge |
Jun. 9, 1992 |
| 5101206 |
Integrating analog to digital converter |
Mar. 31, 1992 |
| 5097264 |
Analog-to-digital converter |
Mar. 17, 1992 |
| 5014058 |
Method and arrangement for evaluating a measurable analog electrical quantity |
May. 7, 1991 |
| 5006853 |
Hysteresis insensitive analog to digital converter system using a coarse comparator and a fine comparator |
Apr. 9, 1991 |
| 4999632 |
Analog to digital conversion with noise reduction |
Mar. 12, 1991 |
| 4939519 |
Apparatus for method and a high precision analog-to-digital converter |
Jul. 3, 1990 |
| 4939520 |
Analog to digital converter using an integrator having a partially controlled output signal |
Jul. 3, 1990 |
| 4910516 |
Integrated dual-slope analog to digital converter with R/C variance compensation |
Mar. 20, 1990 |
| 4908623 |
Apparatus and method for range control and supply voltage compensation in a dual slope analog to digital converter |
Mar. 13, 1990 |
| 4906996 |
Analog-to-digital converter with offset voltage polarity inversion |
Mar. 6, 1990 |
| 4857933 |
Analogue to digital converter of the multi-slope type |
Aug. 15, 1989 |
| 4851839 |
Dual-slope analog-to-digital converter with voltage to current converter |
Jul. 25, 1989 |
| 4849757 |
Integrated dual-slope analog to digital converter with r/c variance compensation |
Jul. 18, 1989 |
| 4837527 |
Switched capacitor arrangement |
Jun. 6, 1989 |
| 4827261 |
Clock-controlled pulse width modulator |
May. 2, 1989 |
| 4771265 |
Double integration analog to digital converting device |
Sep. 13, 1988 |
| 4764752 |
Analog to digital converter having no zero or span drift |
Aug. 16, 1988 |
| 4746900 |
Signal processing circuit |
May. 24, 1988 |
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