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:
Sep. 29, 2009
Filed:
Apr. 01, 2005
Kyong-ju Shin, Yongin-si, KR;
Jin-hong Kim, Seoul, KR;
Seung-hwan Moon, Yongin-si, KR;
Chong-chul Chae, Seoul, KR;
Kyong-Ju Shin, Yongin-si, KR;
Jin-Hong Kim, Seoul, KR;
Seung-Hwan Moon, Yongin-si, KR;
Chong-Chul Chae, Seoul, KR;
Abstract
A photosensor is provided, which includes a sensor, a reference voltage generator and a processor. The sensor receives an external light and generates a sensing voltage in response to an amount of the external light received. The reference voltage generator is blocked from the external light and generates a reference voltage. The processor receives the sensing voltage from the sensor and the reference voltage from the reference voltage generator to generate a sensor output voltage in response to a difference between the sensing voltage and the reference voltage.