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:
Dec. 15, 2020
Filed:
Sep. 14, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Takeo Ushinaga, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
An AD converter includes a comparator that compares a potential of a pixel signal line with a reference potential that is a potential of a ramp waveform changing with time, a counter that stops a counting operation in response to a change in an output of the comparator, and an all-bit latch unit that holds all bits of a count value subsequent to stopping the counting operation during the second count period. The counter sets an initial value for the counting operation during the first count period to be a negative value, and prior to the counting operation during the second count period, inverts all bits of the count value subsequent to stopping the counting operation during the first count period.