Luminance determining method, luminance determining device, and video display apparatus
AssigneeSocionext Inc.
InventorKatsuya Otoi
Life of this patent
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Abstract
A luminance determining method of determining a luminance of each pixel in a display device that includes a self emitting element includes dividing one image into a plurality of blocks that do no overlap each other; and correcting, in each of the plurality of blocks, a luminance of each pixel by reducing the luminance in the plurality of blocks through a correction method determined for each of the plurality of blocks.
Claims17
A luminance determining method of determining a luminance of each pixel in a display device that includes a self emitting element, the luminance determining method comprising:
- dividing one image into a plurality of blocks that do not overlap each other;
- and
- performing a luminance correction to correct, in each of the plurality of blocks, a luminance of each pixel by reducing the luminance in the plurality of blocks through a correction method determined for each of the plurality of blocks, wherein:
- when a luminance of each pixel input before the luminance correction is defined as a first luminance and a luminance of each pixel that has been subjected to the luminance correction is defined as a second luminance,
- the correction method includes bringing the second luminance to a luminance threshold when the second luminance has fallen below the luminance threshold.
A luminance determining method of determining a luminance of each pixel in a display device that includes a self emitting element, the luminance determining method comprising:
- dividing one image into a plurality of blocks that do not overlap each other;
- and
- performing a luminance correction to correct, in each of the plurality of blocks, a luminance of each pixel by reducing the luminance in the plurality of blocks through a correction method determined for each of the plurality of blocks, wherein:
- when a luminance of each pixel input before the luminance correction is defined as a first luminance and a luminance of each pixel that has been subjected to the luminance correction is defined as a second luminance,
- the correction method corrects, in each of the plurality of blocks, the first luminance of each pixel in a given block to the second luminance based on a total number of pixels, within the given block, that have a first luminance higher than a first luminance threshold.
A luminance determining method of determining a luminance of each pixel in a display device that includes a self emitting element, the luminance determining method comprising:
- dividing one image into a plurality of blocks that do not overlap each other;
- and
- performing a luminance correction to correct, in each of the plurality of blocks, a luminance of each pixel by reducing the luminance in the plurality of blocks through a correction method determined for each of the plurality of blocks, wherein:
- when a luminance of each pixel input before the luminance correction is defined as a first luminance and a luminance of each pixel that has been subjected to the luminance correction is defined as a second luminance,
- the luminance correction includes:
- obtaining a first coefficient based on a difference between a mean value of first luminances of the pixels in one block among the plurality of blocks and a maximum value of the first luminances of the pixels in the one block;
- obtaining a second coefficient based on a number of pixels, within the one block, that have the first luminance higher than a first luminance threshold;
- and
- calculating the second luminance by correcting the first luminance of each pixel in the one block based on the first coefficient and the second coefficient.
A luminance determining device that determines a luminance of each pixel in a display device that includes a self emitting element, the luminance determining device comprising:
- a controller that divides one image into a plurality of blocks that do not overlap each other and performs a luminance correction to correct, in each of the plurality of blocks, a luminance of each pixel by reducing the luminance in the plurality of blocks through a correction method determined for each of the plurality of blocks, wherein:
- when a luminance of each pixel input before the luminance correction is defined as a first luminance and a luminance of each pixel that has been subjected to the luminance correction is defined as a second luminance,
- the controller brings the second luminance to a luminance threshold when the second luminance has fallen below the luminance threshold.
Dependencies are inferred from the claim text.