Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2004-06-28
2008-11-11
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S690000, C348S672000
Reexamination Certificate
active
07450104
ABSTRACT:
A driving method and apparatus for a liquid crystal display are disclosed that stabilizes the variation of the brightness of a back light in correspondence with data to be displayed. In the method, the data is converted into brightness components. The brightness components are divided into a plurality of brightness areas. The brightness components are arranged into a histogram for each frame and thereafter a control value of a most-frequent value or average value of the histogram is extracted. The extracted control value is stored along with other control values including the extracted control value of a frame prior to the control value of the current frame by at least two frames. The brightness of the back light is controlled using the extracted control value of the current frame and one or more of the other stored control values.
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First Office Action for corresponding Japanese Patent Application Serial No. 2004-191432, dated Oct. 17, 2007.
Brinks Hofer Gilson & Lione
Hjerpe Richard
LG Display Co. Ltd.
Sheng Tom V
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