Display apparatus, light emitting device, and method for controlling display apparatus
AssigneeCanon Kabushiki Kaisha
InventorEisaku Tatsumi
Life of this patent
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Abstract
A display apparatus that displays an image by causing a light emitting device to emit light includes a detection unit configured to detect flicker information that indicates a likelihood of occurrence of a flicker based on input image information, and a control unit configured to control both a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the flicker information detected by the detection unit.
Claims14
A display apparatus that displays an image by causing a light emitting device to emit light, the display apparatus comprising:
- a detection unit configured to detect flicker information that indicates a likelihood of occurrence of a flicker based on input image information, the flicker information calculated based on an average picture level (APL) value by averaging gradation numbers based on the input image information for each of a plurality of regions corresponding to blocks into which an image display region is divided;
- and
- a control unit configured to control both of a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the flicker information detected by the detection unit.
A light emitting device that allows display of an image by causing a light emitting unit to emit light, the light emitting device comprising:
- a detection unit configured to detect flicker information that indicates a likelihood of occurrence of a flicker based on input image information, the flicker information calculated based on an average picture level (APL) value by averaging gradation numbers based on the input image information for each of a plurality of regions corresponding to blocks into which an image display region is divided;
- and
- a control unit configured to control both of a light emission luminance and a duty ratio of a light emission time of the light emitting unit according to the flicker information detected by the detection unit.
A method for controlling a display apparatus that displays an image by causing a light emitting device to emit light, the method comprising:
- detecting flicker information that indicates a likelihood of occurrence of a flicker based on input image information, the flicker information calculated based on an average picture level (APL) value by averaging gradation numbers based on the input image information for each of a plurality of regions corresponding to blocks into which an image display region is divided;
- and
- controlling both a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the detected flicker information.
A computer-readable storage medium containing computer-executable instructions for controlling a display apparatus that displays an image by causing a light emitting device to emit light, the computer-executable instructions comprising:
- detecting flicker information that indicates a likelihood of occurrence of a flicker based on input image information, the flicker information calculated based on an average picture level (APL) value by averaging gradation numbers based on the input image information for each of a plurality of regions corresponding to blocks into which an image display region is divided;
- and
- controlling both a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the flicker information detected.
Dependencies are inferred from the claim text.