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:
Oct. 24, 2017
Filed:
Feb. 03, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Seiji Hashimoto, Yokohama, JP;
Yasushi Matsuno, Fujisawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An imaging apparatus comprises: a pixel generating a photoelectric conversion signal; a comparator configured to compare a base signal based on the pixel at a reset state with a time-changing first reference signal, and for comparing an effective signal based on the pixel at a non-reset state with a time-changing second reference signal, wherein the second reference signal has a larger time-changing ratio than that of the second reference signal; a counter configured to count a first count value until an inversion of a magnitude relation between the base signal and the first reference signal, and configured to count a second count value until an inversion of a magnitude relation between the effective signal and the second reference signal; a correcting unit configured to correct a difference of resolutions of the first and second count values, and configured to correct a difference between the first and second count values corrected.