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Class Information
Number: 341/168
Name: Coded data generation or conversion > Analog to or from digital conversion > Analog to digital conversion > Intermediate conversion to time interval > Plural slope
Description: Subject matter wherein the input analog signal is integrated for a fixed time interval following which there is a nonlinear return to the datum level by means of applied plural reference signals or by changing the frequency of a clock signal which is being counted.

Patents under this class:

Patent Number Title Of Patent Date Issued
8711952 Analog to digital converter with increased sub-range resolution Apr. 29, 2014
8525722 Ad converting device, dial-type input device, and resistance-voltage conversion circuit Sep. 3, 2013
8483291 Analog to digital converter with increased sub-range resolution Jul. 9, 2013
8130295 Analog-to-digital converter, solid-state image pickup device, and camera system Mar. 6, 2012
8111179 Method and system for reducing signal distortion in a continuously variable slope delta modulation scheme Feb. 7, 2012
7916061 Apparatus and method for sigma-delta analog to digital conversion Mar. 29, 2011
7911519 Solid-state image pickup device, driving method thereof, and camera system Mar. 22, 2011
7830294 Measurement amplification device and method Nov. 9, 2010
7671777 AD converter Mar. 2, 2010
7564398 Method and apparatus for ad conversion, semiconductor device for detecting distribution of physical quantity, and electronic apparatus Jul. 21, 2009
6717393 System for difference calculation using a quad slope converter Apr. 6, 2004
6646576 System and method for processing data Nov. 11, 2003
6433713 Calibration of analog-to-digital converters Aug. 13, 2002
6384760 Analog-to-digital converter May. 7, 2002
6285310 Integrating analog/digital converter Sep. 4, 2001
5870078 Reduced cost pointing stick circuit Feb. 9, 1999
5614902 Ratiometric analog to digital converter with automatic offset Mar. 25, 1997
5565869 Multiple slope analog-to-digital converter having increased linearity Oct. 15, 1996
RE34899 Analog to digital conversion with charge balanced voltage to frequency converter having polarity responsive offset Apr. 11, 1995
5327137 Multiple ramp procedure with higher order noise shaping Jul. 5, 1994
5321403 Multiple slope analog-to-digital converter Jun. 14, 1994
5289187 Method and means for converting an analog signal into a digital signal Feb. 22, 1994
5216426 Integrating ADC having memory capacitor connected to integrator output and one comparator input and voltage divider connected to integrator output and the other comparator input Jun. 1, 1993
5200752 Integrating analog to digital converter run-up method and system Apr. 6, 1993
5148171 Multislope continuously integrating analog to digital converter Sep. 15, 1992
5101206 Integrating analog to digital converter Mar. 31, 1992
5066955 Analog to digital converters with convergence accelerating signals Nov. 19, 1991
5019817 Analogue-to-digital converter May. 28, 1991
5012247 Switched-capacitor analog-to-digital converter with autocalibration Apr. 30, 1991
4983972 Video delta modulation encoder Jan. 8, 1991
4942401 Analog to digital conversion with charge balanced voltage to frequency converter having polarity responsive offset Jul. 17, 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
4851843 Analogue-to-digital conversion apparatus Jul. 25, 1989
4574271 Multi-slope analog-to-digital converter Mar. 4, 1986
4567465 Method and apparatus for converting analog signal into digital signal Jan. 28, 1986
4559521 Calibration of a multi-slope A-D converter Dec. 17, 1985
4556867 Dual rate, integrating, analog-to-digital converter Dec. 3, 1985
4395701 High speed integrating analog-to-digital converter Jul. 26, 1983
4361831 Analog-digital converter utilizing multiple ramp integrating techniques Nov. 30, 1982
4354176 A-D Converter with fine resolution Oct. 12, 1982
4268820 Integrating type analog-to-digital converter May. 19, 1981
4243975 Analog-to-digital converter Jan. 6, 1981
4204197 Digital scale May. 20, 1980
4045658 Digitized linearizing correction apparatus with frequency modulation Aug. 30, 1977
4008405 Motion detection circuit for electronic weighing system Feb. 15, 1977
3995265 Analogue divider with digital output for spectrophotometry Nov. 30, 1976
RE28833 Analogue to digital converter May. 25, 1976
RE28706 Triple-slope analog-to-digital converters Feb. 3, 1976

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