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. 01, 2019
Filed:
Nov. 07, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Nobuhiro Oka, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image signal in which a predetermined calibration pattern is synthesized in an input image is output. Based on the output image signal, transmittance or reflectance of a liquid crystal panel is controlled, and an image is formed. The image is projected by irradiating the liquid crystal panel with light, and the projected image is captured. A calibration pattern is extracted from the captured image. A correction parameter is generated depending on a condition of the extracted calibration pattern. Image capturing timing is controlled so that an image before or after update of transmittance or reflectance of the liquid crystal panel is not mixed in the image captured by an image capturing sensor based on timing at which the transmittance or the reflectance of the liquid crystal panel is updated by a liquid crystal control unit.