Varying the peak luminance of a display panel with comparison of the mean gradation value of a current frame and mean gradation values averaged over a period of several frames
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United States of America Patent
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Sep 4, 2012
Grant Date -
Aug 2, 2007
app pub date -
Nov 17, 2006
filing date -
Nov 25, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A self-luminous display apparatus capable of varying a peak luminance of a display panel in a unit of one frame, which includes: a mean gradation value calculation section configured to calculate a mean gradation value of a video signal in a unit of a frame for each one frame; a specific condition detection section configured to detect, based on the mean gradation values calculated over a period of several frames, an input of the video signal which satisfies a specific condition in which a drop of a physical peak luminance is not likely to be perceived visually; and a light emission condition control section configured to perform dropping control of the peak luminance in a unit of a frame so that a dropping condition set in advance may be satisfied for a period of time after the frame which satisfies the specific condition is detected until the detection state is canceled.
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