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:
Feb. 10, 2015
Filed:
Apr. 29, 2013
Aptina Imaging Corporation, George Town, Cayman Islands, KY;
Tore Martinussen, Strommen, NO;
Aptina Imaging Corporation, George Town, KY;
Abstract
An imaging system may include an array of image pixels and verification circuitry. The verification circuitry may inject a test voltage into the pixel signal chain of a test pixel. The test voltage may be output on a column line associated with the column of pixels in which the test pixel is located. The test signal may be provided to a column ADC circuit for conversion from an analog test signal to a digital test signal. Verification circuitry may compare the digital output test signal with a predetermined reference signal to determine whether the imaging system is functioning properly (e.g., to determine whether column ADC circuits or other circuit elements in the pixel signal chain are functioning properly). If the output test signals do not match the expected output signals, the imaging system may be disabled and/or a warning signal may be presented to a user of the system.