Display apparatus and control method with images of different dynamic ranges
AssigneeCanon Kabushiki Kaisha
InventorKazuomi Toguchi
Life of this patent
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Abstract
A display apparatus switches to any one of a plurality of modes, generates a partial image, and controls a luminance of a black region. The plurality of modes includes a first mode capable of displaying an image of a first dynamic range on a display unit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on a display unit. The partial image includes at least a black region and is superimposed on an image displayed on the display unit. Controlling includes controlling a luminance of the black region of the partial image in the second mode to be less than a luminance of the black region of the partial image in the first mode.
Claims8
A display apparatus comprising:
- a control circuit configured to switch to any one of a plurality of modes including a first mode capable of displaying an image of a first dynamic range on a display circuit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on a display circuit;
- and
- a generating circuit configured to generate a partial image which includes at least a black region and is superimposed on an image displayed on the display circuit,
- wherein the control circuit controls a luminance of the black region of the partial image in the second mode to be less than a luminance of the black region of the partial image in the first mode by changing a ratio of a gradation of the black region with respect to all gradations that can be displayed.
A method of controlling a display apparatus comprising:
- switching to any one of a plurality of modes including a first mode capable of displaying an image of a first dynamic range on a display unit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on the display unit;
- generating a partial image which includes at least a black region and is superimposed on the image displayed on the display unit;
- and
- controlling such that a luminance of the black region of the partial image in the second mode is less than a luminance of the black region of the partial image in the first mode by changing a ratio of a gradation of the black region with respect to all gradations that can be displayed.
A non-transitory computer-readable storage medium storing a program that causes a computer to execute a method of controlling a display apparatus comprising:
- switching to any one of a plurality of modes including a first mode capable of displaying an image of a first dynamic range on a display unit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on the display unit;
- generating a partial image which includes at least a black region and is superimposed on the image displayed on the display unit;
- and
- controlling such that a luminance of the black region of the partial image in the second mode is less than a luminance of the black region of the partial image in the first mode by changing a ratio of a gradation of the black region with respect to all gradations that can be displayed.
Dependencies are inferred from the claim text.