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:
Jan. 30, 2023
Filed:
Aug. 13, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Atsushi Iwashita, Saitama, JP;
Toshio Kameshima, Kumagaya, JP;
Tomoyuki Yagi, Honjo, JP;
Katsuro Takenaka, Honjo, JP;
Hideyuki Okada, Honjo, JP;
Sho Sato, Saitama, JP;
Eriko Sato, Tokyo, JP;
Takuya Ryu, Kokubunji, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A radiation imaging apparatus includes a pixel array having pixels including conversion elements and switching elements, a bias line for supplying a bias potential to the conversion elements; driving lines for supplying a signal to control the switching elements, a driving unit for performing an initialization operation of supplying a driving signal to each driving line group, switching each driving signal from an OFF voltage to an ON voltage, and then returning the driving signal to the OFF voltage; an acquisition unit configured to acquire a plurality of times in each driving cycle a signal value representing a current flowing through the bias line; a calculation unit configured to calculate radiation information based on the signal values; and a determination unit configured to determine whether irradiation of the pixel array with radiation is present based on the radiation information.