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:
Aug. 19, 2014
Filed:
Oct. 11, 2011
Seung-hyun Lim, Yongin-si, KR;
Kwi-sung Yoo, Seoul, KR;
Kyoung-min Koh, Hwaseong-si, KR;
Yu-jin Park, Seoul, KR;
Chi-ho Hwang, Seoul, KR;
Yong Lim, Hwaseong-si, KR;
Seung-Hyun Lim, Yongin-si, KR;
Kwi-Sung Yoo, Seoul, KR;
Kyoung-Min Koh, Hwaseong-si, KR;
Yu-Jin Park, Seoul, KR;
Chi-Ho Hwang, Seoul, KR;
Yong Lim, Hwaseong-si, KR;
Abstract
An analog to digital converter (ADC) can include a multi-input comparison unit configured to compare a pixel voltage from an image sensor, a comparison voltage comprising a stepped voltage modified during a coarse mode of operation, and a ramp voltage comprising a ramped voltage modified to one another during a fine mode of operation, to provide a comparison result signal that indicates whether the comparison voltage combined with the ramp voltage is greater than or less than the pixel voltage. A selection control signal generation unit can receive the comparison result signal and a mode control signal, to indicate the coarse or fine mode, to provide a selection control signal allowing modification of the comparison voltage in the coarse mode and to hold the comparison voltage constant in the fine mode. A reference voltage selection unit can receive the selection control signal to control modification of the comparison voltage.