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:
Sep. 14, 2021
Filed:
Jan. 24, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Takayuki Yasuda, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An apparatus includes an imaging device including a plurality of light receiving units each converting a light beam into a voltage pulse based on an avalanche effect, and a controller having a processor which executes instructions stored in a memory, the controller being configured to function as a generation unit configured to generate image data based on the voltage pulse, a detection unit configured to detect a focus state of an imaging optical system based on the voltage pulse, and a control unit configured to control an exposure time of the light receiving units. The control unit includes a histogram generation unit and a determination unit. The histogram generation unit generates a histogram of the plurality of light receiving units based on the voltage pulse, and the determination unit determines an exposure state of the plurality of light receiving units based on the histogram generated by the histogram generation unit.