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. 18, 2017
Filed:
Sep. 12, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Keigo Yokoyama, Honjo, JP;
Minoru Watanabe, Yokohama, JP;
Masato Ofuji, Takasaki, JP;
Jun Kawanabe, Kawasaki, JP;
Kentaro Fujiyoshi, Tokyo, JP;
Hiroshi Wayama, Kawasaki, JP;
Kazuya Furumoto, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A radiation imaging apparatus is provided. The apparatus comprises first pixels arranged in an image sensing region to obtain a radiation image, a second pixel configured to obtain a dose of incident radiation and a control unit configured to control the first pixels and the second pixel. The control unit causes the first pixels to accumulate charge corresponding to a radiation dose, while causing the second pixel to operate in a detection cycle determined based on irradiation information of radiation before irradiation with radiation, obtains a dose of incident radiation for each detection cycle, and corrects the obtained radiation dose in accordance with an amount of noise output from the second pixel operating in the detection cycle.