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:
Nov. 05, 2013
Filed:
Dec. 16, 2009
Tzong-kwei Chen, Hsinchu County, TW;
Chun-lin Shen, Hsinchu, TW;
Yi-chen Liu, Taichung, TW;
Chen-ting Kuan, Hsinchu County, TW;
Tzong-Kwei Chen, Hsinchu County, TW;
Chun-Lin Shen, Hsinchu, TW;
Yi-Chen Liu, Taichung, TW;
Chen-Ting Kuan, Hsinchu County, TW;
Holtek Semiconductor Inc., Hsinchu, TW;
Abstract
For improving the brightness decay of a display due to its aging, a non-volatile memory such as Flash can be used to store a brightness accumulation value of each point of the display, and each point can be compensated for its brightness accordingly. However, the non-volatile memory suffers from incorrect write-in data or temporary power disconnection, and thus the error will exist all the time to make the display non-even. Hence, the present invention uses a multiple data backups and CRC error detection, plus new/old data comparison to protect data the non-volatile memory from incorrect brightness compensation value so as to uniform the brightness of the display.