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:
May. 05, 2015
Filed:
Sep. 13, 2012
Min-seok OH, Osan-si, KR;
Moo-sup Lim, Yongin-si, KR;
Jung-chak Ahn, Yongin-si, KR;
Eun-sub Shim, Anyang-si, KR;
Min-Seok Oh, Osan-si, KR;
Moo-Sup Lim, Yongin-si, KR;
Jung-Chak Ahn, Yongin-si, KR;
Eun-Sub Shim, Anyang-si, KR;
Abstract
A unit pixel for an image sensor includes an accumulation circuit configured to generate an accumulated dark current by accumulating a charge corresponding to a dark current during a time of flight (TOF), the accumulation circuit being optically shaded to generate the dark current, an output voltage generation circuit configured to generate and output an output voltage corresponding to the TOF based on a charge corresponding to the accumulated dark current, a control circuit configured to control an operation of the output voltage generation circuit based on a light signal that is input to the unit pixel after being reflected by an object, the light signal being emitted by a light source, and an initialization circuit configured to initialize the accumulation circuit at a predetermined cycle.