Brightness compensation apparatus and application method thereof
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United States of America Patent
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Nov 5, 2013
Grant Date -
Mar 31, 2011
app pub date -
Dec 16, 2009
filing date -
Sep 25, 2009
priority date (Note) -
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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.
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