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:
Apr. 12, 2005
Filed:
Nov. 05, 2002
Koich Sono, Suwon-si, KR;
Koich Sono, Suwon-si, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
Apparatus and method for controlling a driving voltage for an image display device, in which an optical sensor is installed between a liquid crystal display device and a screen or between the liquid crystal display device and a projection lens, and the driving voltage for the liquid crystal display device is feedback controlled using the output signal of the optical sensor in order to provide an optimal contrast. In this apparatus and method, the edge area of an image display device is subject to a minute change in the amplitude of a driving voltage, and the optical change is sensed and used to control the driving voltage of the image display device. Accordingly, regardless of property changes due to the temperature of an image display device and its peripheral devices, a picture can be displayed with an optimal contrast and blinking due to flickering can be minimized.