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:
Dec. 16, 2025
Filed:
Feb. 16, 2022
Coretronic Corporation, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
The invention provides a projector and a correction method thereof. The projector includes a ToF sensor, a calculation unit, a control unit, and a projection module. The ToF sensor senses distances between measurement points on a projection surface and the projector in a distance measurement operation. The calculation unit is coupled to the ToF sensor. The calculation unit calculates at least one distance ratio corresponding to at least one direction according to the distances, and obtains at least one offset angle in the at least one direction according to the at least one distance ratio. The control unit is coupled to the calculation unit and the ToF sensor. The projection module is coupled to the control unit. The control unit performs a keystone correction operation of the projection module according to the at least one offset angle.