Image displaying apparatus
First Claim
1. An image displaying apparatus, comprising:
- a sub-frame producing portion, which is configured to produce a first sub-frame and a second sub-frame, which is lower in gradation thereof than said first sub-frame, from one (1) frame of image on an image signal inputted; and
a level compensation portion, which is configured to lower a gradation level of said image signal inputted, in case when the gradation of said image signal inputted is equal or greater than a predetermined value;
wherein said sub-frame producing portion produces the first and the second sub-frames with using the image signal, which is lowered in the gradation level thereof by means of said level compensation portion, when the gradation of said image signal inputted is equal or greater than the predetermined value.
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Accused Products
Abstract
An image displaying apparatus, for improving motion blur, in particular, on an image displaying apparatus of hold-type, such as, a liquid crystal display element, etc., comprising: sub-frame producing portions (5, 6) for producing a first sub-frame, a second sub-frame being lower in the gradation than the first sub-frame, from an image of one (1) frame of an image signal inputted; a histogram detection portion (2) for detecting brightness histogram of the image signal; an image determination portion (3) for determining on whether the image signal inputted is a high-gradation image or not, from that brightness histogram; and a level compensation portion (4) for lowering a gradation level of that image signal inputted. And, according to the present invention, lowering the gradation of the high-gradation image keeps the difference in brightness between the first and the second sub-frames, and thereby increasing an effect of improving the motion blur.
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Citations
15 Claims
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1. An image displaying apparatus, comprising:
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a sub-frame producing portion, which is configured to produce a first sub-frame and a second sub-frame, which is lower in gradation thereof than said first sub-frame, from one (1) frame of image on an image signal inputted; and
a level compensation portion, which is configured to lower a gradation level of said image signal inputted, in case when the gradation of said image signal inputted is equal or greater than a predetermined value;
wherein said sub-frame producing portion produces the first and the second sub-frames with using the image signal, which is lowered in the gradation level thereof by means of said level compensation portion, when the gradation of said image signal inputted is equal or greater than the predetermined value. - View Dependent Claims (2, 3, 4, 5)
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6. An image displaying apparatus, comprising:
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a liquid crystal displaying portion, which is configured to modulate a light from a light source;
a sub-frame producing portion, which is configured to produce a first sub-frame and a second sub-frame, which is lower in gradation thereof than said first sub-frame, from one (1) frame of image on an image signal inputted, to be supplied to said liquid crystal displaying portion;
a level compensation portion, which is configured to lower a gradation level of said image signal inputted, in case when said image signal inputted is a high-gradation image, gradation of which is equal or higher than a predetermined value; and
a light source control portion, which is configure to control an intensity of illumination from said light source;
wherein said sub-frame producing portion produces the first and the second sub-frames with using the image signal, which is lowered in the gradation level thereof by means of said level compensation portion, when said image signal inputted is the high-gradation image, and said light source control portion controls so that the intensity of illumination from said light source is increased, when said image signal inputted is the high-gradation image. - View Dependent Claims (7, 8, 9, 10)
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11. An image displaying apparatus, comprising:
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a sub-frame producing portion, which is configured to produce a plural number of sub-frames, differing in gradation from each other, from one (1) frame of image on an image signal inputted; and
a pull-down detection portion, which is configured to determine on whether said image signal inputted is a signal treated with 2-3 pull-down process or with 2-2 pull-down process;
wherein gradation levels are made equal to each other, between the sub-frames at exchange portions of the frames of said image signal inputted, among the plural number of the sub-frames, which are produced within said sub-frame producing portion, when determining that the image signal inputted is the signal treated with said pull-down process by said pull-down detection portion. - View Dependent Claims (12, 13, 14, 15)
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Specification