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. 08, 2008
Filed:
Mar. 29, 2004
Yih-liang LU, Hsinchu, TW;
Yi-fan Chen, Taichung, TW;
Cheng-jung Chen, Miaoli Hsien, TW;
Yuh-ren Shen, Tainan, TW;
Yih-Liang Lu, Hsinchu, TW;
Yi-Fan Chen, Taichung, TW;
Cheng-Jung Chen, Miaoli Hsien, TW;
Yuh-Ren Shen, Tainan, TW;
Vastview Technologies, Inc., , TW;
Abstract
A method for luminance compensation of liquid crystal display includes: measuring the original gamma curve of the panel, setting a target gamma curve, inputting an initial gray level to obtain a luminance corresponding to the target gamma curve, finding the adjusted gray level for expressing the luminance from the original gamma curve, repeating the steps stated above to make a lookup table containing plural groups of proportion array. Then calculating the quantity distribution of input gray levels of images, selecting a corresponding proportion array from the lookup table according to the proportion value between dark level and bright level, substituting the adjusted gray levels in the proportion array for the input gray levels, outputting the adjusted gray levels for adjusting the signal intensity can improve the image quality. The method and the device for luminance compensation can adjust the intensity of input signals to obtain better image quality and suit for the image adjustment of various liquid crystal displays or similar displays.