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:
Feb. 25, 2014
Filed:
Jan. 15, 2010
Wei-ting Lan, Tainan County, TW;
Cheng-chi Yen, Tainan County, TW;
Ju-tien Cheng, Tainan County, TW;
Wei-Ting Lan, Tainan County, TW;
Cheng-Chi Yen, Tainan County, TW;
Ju-Tien Cheng, Tainan County, TW;
Himax Display, Inc., Tainan, TW;
Abstract
A light detecting circuit and a light detecting method thereof are provided. The light detecting circuit includes a first resistor, a light sensor, a current source, and a first current mirror. The light sensor generates a corresponding photocurrent according to the illumination while being illuminated by the high brightness light beam. By dividing the photocurrent corresponding to the low brightness light beam from the photocurrent through the current source, the light detecting circuit can mainly detects the high brightness light beam, so that the detecting accuracy can be enhanced. Accordingly, when being applied to detect the high brightness light beam, the light detecting circuit can provide a sensing voltage in a wide enough range and a large enough sense scale, so that the sensing voltage is easy to be distinguished by the rear stage.