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:
Sep. 19, 2017
Filed:
Dec. 08, 2015
Renesas Electronics Corporation, Tokyo, JP;
Kazuhiro Ueda, Tokyo, JP;
Fukashi Morishita, Tokyo, JP;
Renesas Electronics Corporation, Tokyo, JP;
Abstract
The present invention is directed to solve a problem that, in an imaging element, complicated control is necessary for reading data for focus detection. A scanning circuit makes a first signal output from a pixel by setting first and second switches to 'off' in a period before a first timing, makes a second signal output from the pixel by setting only the first switch to 'on' for a predetermined period from the first timing, and makes a third signal output from the pixel by setting the first and second switches to “on” for a predetermined period from a second timing after the first timing. A first AD converter performs AD conversion by comparing the difference between the second signal and the first signal with a reference signal. A second AD converter performs AD conversion by comparing the difference between a third signal and the second signal with the reference signal.