Display device, display device drive method, and computer program
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jun 3, 2010
app pub date -
May 15, 2008
filing date -
May 18, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A display device is provided which includes: a still image detection unit (122) which inputs video signals having linear characteristic and calculates an average value of signal levels of the video signals having linear characteristic per pixel; a storage unit (150) which successively stores the average values calculated by the still image detection unit (122); a still image judging unit (162) which judges whether a still image is displayed on a present screen based on a difference between the average value stored in the storage unit (150) and the last average value; a coefficient calculation unit (164) which calculates coefficients for reducing luminance of an image to be displayed when the still image judging unit (162) has judged that a still image is displayed on the present screen; and a signal level correction unit (128) which multiplies the video signals by the coefficients calculated by the coefficient calculation unit (164).
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