Brightness compensation apparatus and application method thereof
US8576258B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2009 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Sep 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.