The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2014
Filed:
Aug. 10, 2012
Christopher James Wrigley, La Crescenta, CA (US);
Bruce R. Hancock, Altadena, CA (US);
Kenneth W. Newton, Castaic, CA (US);
Thomas J. Cunningham, Pasadena, CA (US);
Christopher James Wrigley, La Crescenta, CA (US);
Bruce R. Hancock, Altadena, CA (US);
Kenneth W. Newton, Castaic, CA (US);
Thomas J. Cunningham, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
An analog-to-digital converter (ADC) converts pixel voltages from a CMOS image into a digital output. A voltage ramp generator generates a voltage ramp that has a linear first portion and a non-linear second portion. A digital output generator generates a digital output based on the voltage ramp, the pixel voltages, and comparator output from an array of comparators that compare the voltage ramp to the pixel voltages. A return lookup table linearizes the digital output values.