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. 20, 2015
Filed:
Mar. 08, 2013
Everest Display Inc., Hsinchu, TW;
Hei-Tai Hong, Hsinchu County, TW;
Fu-Hsiung Lee, Hsinchu, TW;
Everest Display Inc., Hsinchu, TW;
Abstract
A method for calibrating position of light point is used for an interactive projection system including an image capture device. The image capture device includes an image sensor and an optical filter. The method includes the following steps. A plurality of calibrating patterns formed by visible light is individually projected on a screen. The distance between the calibrating pattern with big area and an optical axis of the image sensor is larger than that between the calibrating pattern with small area and the optical axis. Next, the exposure time of the image sensor is adjusted so the image sensor can capture the images of the calibrating patterns through the optical filter. According to the images of the calibrating patterns, a plurality of coordinate positions is gotten. Then, the coordinate positions are adjusted according to a standard coordinate.