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(11) | EP 2 043 079 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Video displaying apparatus with dynamic brightness control of the backlight |
(57) A video displaying apparatus is provided that can change light-modulation rate of
a backlight source in accordance with changes in a feature quantity of an input video
signal based on a difference between times required for the light adaptation and the
dark adaptation. A video displaying apparatus includes a liquid crystal panel (3)
that displays an input video signal, a backlight source (9) that applies light to
the liquid crystal panel (3), an APL detecting part (6) that detects APL of the input
video signal, and a control microcomputer (8) that variably controls a change amount
of emission luminance of the backlight source (9) for each predetermined time based
on the detected APL. The control microcomputer (8) performs control such that the
change amount for the APL of the input video signal changing to a higher quantity
becomes greater than the change amount for the APL of the input video signal changing
to a lower quantity.
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