Display apparatus and method for gamma correcting a video signal therein
AssigneeSamsung Electronics Co., Ltd.
InventorSeong-Bo Kim
Life of this patent
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Abstract
A display apparatus comprising a gamma correction part for gamma correcting an input video signal; a selection input part for selecting the amount of correction by the gamma correction part; and a micro-control unit for controlling the correction amount by the gamma correction part depending upon a selection from the selection input part. With this configuration, the input video signals are gamma corrected within the display apparatus and can be output in the optimal state. And, whether to perform gamma correction or not, and the amount of gamma correction for the display apparatus may be selected as the user desires.
Claims19
A display apparatus, comprising:
- a gamma correction part for gamma correcting an input video signal;
- a selection input part for selecting the amount of correction by the gamma correction part;
- and
- s a micro-control unit for controlling the correction amount by the gamma correction part depending upon a selection from the selection input part.
A method for gamma correcting a video signal in a display apparatus, comprising the steps of:
- selecting the amount of gamma correction;
- gamma correcting the video signal according to the selected correction amount, wherein the gamma correction step is comprised of:
- sectioning the video signals into a plurality of sections depending upon voltage levels of the video signal, receiving the video signal having a predetermined upper limit, or less, and amplifying it;
- converting the video signal amplified into the form of an exponential function, processing the video signal into the form of a reverse function thereafter, and outputting the video signal in the form of a converted hyperbolic tangent function;
- adjusting a voltage level of the converted video signal according to the selected gamma correction amount;
- and
- composing the amplified video signal into a video image for display;
- and
- displaying the gamma corrected video signal.
A display apparatus, comprising:
- a plurality of gamma section parts sectioning a video signal into a plurality of sections according to voltage levels of the video signals, receiving the video signals having predetermined upper limits, or less, and amplifying them;
- and
- a mixer for composing the video signals gamma corrected in the respective of gamma section parts.
Dependencies are inferred from the claim text.