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:
Apr. 28, 2015
Filed:
Nov. 11, 2011
Eun Jun Kim, Icheon-si, KR;
Eun Jun Kim, Icheon-si, KR;
SK Hynix Inc., Gyeonggi-do, KR;
Abstract
An image sensing device includes, inter alia, a ramp signal generation unit generating a ramp signal that decreases during first and second periods for finding data values corresponding to a pixel signal and an offset value, respectively. The image sensing device also includes a comparison unit compares the pixel signal with the ramp signal during the first period, and compares the ramp signal with an internally generated offset value during the second period. A first counting unit is configured to perform a counting operation during the first period, and a second counting unit configured to latch a count value of the first counting unit as a data value in response to the result of the first comparison operation during the first period, perform a down-count operation from the latched data value in response to the result of the second comparison operation during the second period, and latch a counting result.