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. 06, 2021
Filed:
Oct. 17, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Kazumasa Matsumoto, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A radiation imaging apparatus is provided. Each pixel includes a signal generation unit configured to generate a pixel signal, a reset unit configured to cause the signal generation unit to generate an offset signal by resetting the signal generation unit to a state before the accumulation of charges, and a holding unit. The apparatus comprises a control unit configured to control each pixel to generate the pixel signal and the offset signal in every frame period and hold the pixel signal and the offset signal in the holding unit; and a readout unit configured to read out, from the holding unit, the offset signal generated in a frame period and the pixel signal generated in accordance with charges accumulated subsequently to the generation of the offset signal, and calculate a difference between the readout offset signal and pixel signal.