Control apparatus and control method thereof
First Claim
1. A control apparatus for controlling a display apparatus having a backlight of which emission brightness is controlled for each of a plurality of blocks of a screen, and a display panel which displays an image on the screen by transmitting light from the backlight, wherein each of the plurality of blocks corresponds to a plurality of pixels being backlit with light of a common brightness, the control apparatus comprising:
- a control unit that sets, in a case of displaying a first image, a plurality of first blocks, and sets, in a case of displaying a second image formed by enlarging the first image, according to an enlargement ratio of the second image relative to the first image, a plurality of second blocks of which a size is larger than a size of the first blocks, wherein an enlargement ratio of a second block relative to a first block is an enlargement ratio that is substantially equal to the enlargement ratio of the second image relative to the first image, and wherein in a case of displaying the first image, a size of each of the plurality of first blocks corresponds to a minimum controllable size for the backlight, and in a case of displaying the second image, the size of each of the plurality of second blocks is greater than the size of each of the plurality of first blocks by a factor of the enlargement ratio of the second block relative to the first block, and whereinin a case of displaying the first image, the backlight emits, for each of the plurality of first blocks, light with brightness according to brightness of each portion of the first image to be displayed in each first block, andin a case of displaying the second image, the backlight emits, for each of the plurality of second blocks, light with brightness according to brightness of that portion of the first image which was previously displayed in each first block whose position in the first image corresponds to position of each second block in the second image.
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Abstract
A control apparatus, according to the present invention, for controlling a display apparatus having a liquid crystal panel and a backlight which is configured from a plurality of divided regions and which emits light, with one or more divided regions as one light-emitting unit, based on decided emission brightness of each light-emitting unit, comprises a control unit that sets, upon displaying a second image formed by enlarging a first image, a size of the light-emitting unit larger in comparison to a case of displaying the first image according to an enlargement ratio of the second image relative to the first image.
19 Citations
10 Claims
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1. A control apparatus for controlling a display apparatus having a backlight of which emission brightness is controlled for each of a plurality of blocks of a screen, and a display panel which displays an image on the screen by transmitting light from the backlight, wherein each of the plurality of blocks corresponds to a plurality of pixels being backlit with light of a common brightness, the control apparatus comprising:
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a control unit that sets, in a case of displaying a first image, a plurality of first blocks, and sets, in a case of displaying a second image formed by enlarging the first image, according to an enlargement ratio of the second image relative to the first image, a plurality of second blocks of which a size is larger than a size of the first blocks, wherein an enlargement ratio of a second block relative to a first block is an enlargement ratio that is substantially equal to the enlargement ratio of the second image relative to the first image, and wherein in a case of displaying the first image, a size of each of the plurality of first blocks corresponds to a minimum controllable size for the backlight, and in a case of displaying the second image, the size of each of the plurality of second blocks is greater than the size of each of the plurality of first blocks by a factor of the enlargement ratio of the second block relative to the first block, and wherein in a case of displaying the first image, the backlight emits, for each of the plurality of first blocks, light with brightness according to brightness of each portion of the first image to be displayed in each first block, and in a case of displaying the second image, the backlight emits, for each of the plurality of second blocks, light with brightness according to brightness of that portion of the first image which was previously displayed in each first block whose position in the first image corresponds to position of each second block in the second image. - View Dependent Claims (2, 3, 4, 5)
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6. A control method for a control apparatus for controlling a display apparatus having a backlight of which emission brightness is controlled for each of a plurality of blocks of a screen, and a display panel which displays an image on the screen by transmitting light from the backlight, wherein each of the plurality of blocks corresponds to a plurality of pixels being backlit with light of a common brightness,
the method comprising: -
a step of controlling to set, in a case of displaying a first image, a plurality of first blocks, and sets, in a case of displaying a second image formed by enlarging the first image, according to an enlargement ratio of the second image relative to the first image, a plurality of second blocks of which a size is larger than a size of the first blocks, wherein an enlargement ratio of a second block relative to a first block is an enlargement ratio that is equal to the enlargement ratio of the second image relative to the first image, and wherein in a case of displaying the first image, a size of each of the plurality of first blocks corresponds to a minimum controllable size for the backlight, and in a case of displaying the second image, the size of each of the plurality of second blocks is greater than the size of each of the plurality of first blocks by a factor of the enlargement ratio of the second block relative to the first block, and wherein in a case of displaying the first image, the backlight emits, for each of the plurality of first blocks, light with brightness according to brightness of each portion of the first image to be displayed in each first block, and in a case of displaying the second image, the backlight emits, for each of the plurality of second blocks, light with brightness according to brightness of that portion of the first image which was previously displayed in each first block whose position in the first image corresponds to position of each second block in the second image. - View Dependent Claims (7, 8, 9, 10)
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Specification