IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
First Claim
1. An image display device that time-divides one frame period of an image signal into a plurality of sub-frame periods to display images, comprising:
- an inputting unit into which said image signal is inputted from outside one frame at a time;
a correction unit that corrects a gradation level of the inputted image signal for a frame;
a storage unit that stores the corrected gradation level of the image signal of said frame; and
a frame division unit that time-divides the corrected and stored image signal of said frame into the plurality of sub-frame periods,wherein said storage unit already is storing the corrected gradation level of the image signal of a frame immediately preceding said frame when said correction unit corrects the gradation level of the image signal of said frame, andwherein said correction unit corrects the gradation level of the image signal of said frame in accordance with a relation between the corrected gradation level of the image signal of the frame immediately preceding said frame and the gradation level of the image signal of said frame.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an image display device including an image signal input section (2), an overshoot operation section (3) that, when an image signal is inputted from outside one frame at a time, corrects the gradation level of the inputted image signal for a frame, a frame memory (4) that stores the corrected image signal of the frame, and a sub-frame division processing section (5) that time-divides the corrected and stored image signal of the frame into a plurality of sub-frame periods. The overshoot operation section (3) corrects the gradation level of an image signal of a frame according to a relation between the corrected gradation level of the image signal of a frame immediately preceding the frame, which is stored of the frame memory (4), and the gradation level of the image signal of the frame. Thus, the costs can be reduced, the device can be made compact, and the power consumption can be suppressed.
12 Citations
14 Claims
-
1. An image display device that time-divides one frame period of an image signal into a plurality of sub-frame periods to display images, comprising:
-
an inputting unit into which said image signal is inputted from outside one frame at a time; a correction unit that corrects a gradation level of the inputted image signal for a frame; a storage unit that stores the corrected gradation level of the image signal of said frame; and a frame division unit that time-divides the corrected and stored image signal of said frame into the plurality of sub-frame periods, wherein said storage unit already is storing the corrected gradation level of the image signal of a frame immediately preceding said frame when said correction unit corrects the gradation level of the image signal of said frame, and wherein said correction unit corrects the gradation level of the image signal of said frame in accordance with a relation between the corrected gradation level of the image signal of the frame immediately preceding said frame and the gradation level of the image signal of said frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for displaying images, wherein one frame period of an image signal is time-divided into a plurality of sub-frame periods to display images, the method comprising:
-
inputting the image signal from outside one frame at a time; correcting a gradation level of the inputted image signal of a frame; storing the corrected image signal of said frame to a memory; and time-dividing the corrected and stored image signal of said frame into the plurality of sub-frame periods, wherein, when correcting the gradation level of the image signal of said frame in the correction step, the memory is already storing the corrected image signal of the frame immediately preceding said frame, and wherein in said correction step, correction is conducted in accordance with the relation between the corrected gradation level of the image signal of the frame immediately preceding said frame, which is stored in the memory, and the gradation level of the image signal of said frame.
-
Specification