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. 29, 2019
Filed:
Sep. 08, 2017
Takayuki Shitomi, Tokyo, JP;
Takayuki Shitomi, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A display apparatus includes: a light source to emit light; a dimming unit including a plurality of regions having transmittances that are mutually different from one another; a switching unit to switch a region of the dimming unit through which the light passes, between the plurality of regions of the dimming unit; a scanning unit to scan a scan area at a predetermined frame rate with the light, the scan area having a first area in which an image is formed and a second area different from the first area; a sensor to detect a light amount of the light emitted to the second area; and a controller to determine a boundary timing at which the light has passed through a boundary portion between two adjacent regions of the dimming unit based on characteristics of a temporal change in the detected light amount.