US 12,307,939 B2
Display device
Masamitsu Kobayashi, Kameyama (JP); and Takafumi Miura, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Appl. No. 18/705,477
Filed by Sharp Display Technology Corporation, Kameyama (JP)
PCT Filed Dec. 29, 2021, PCT No. PCT/JP2021/049022
§ 371(c)(1), (2) Date Apr. 26, 2024,
PCT Pub. No. WO2023/127164, PCT Pub. Date Jul. 6, 2023.
Prior Publication US 2025/0014495 A1, Jan. 9, 2025
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2022 (2013.01) [G09G 2320/0247 (2013.01); G09G 2320/0271 (2013.01); G09G 2360/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A display device configured to divide one frame into a first-half sub-frame and a second-half sub-frame and display an image in each of the first-half sub-frame and the second-half sub-frame, the display device comprising:
a pixel-of-interest specifying unit configured to specify, as a pixel of interest, any one of a plurality of pixels constituting an image of the one frame;
a first peripheral pixel specifying unit configured to specify a plurality of first peripheral pixels disposed in a periphery of the pixel of interest in the image;
a first difference coefficient determination unit configured to determine a plurality of first difference coefficients based on differences between each pixel value of the pixel of interest and the plurality of first peripheral pixels in the image of the one frame and a pixel value of the pixel of interest in the image of the one frame;
a first coefficient determination unit configured to determine a first coefficient by performing an arithmetic operation using a first filter on each of the plurality of first difference coefficients;
a first pixel value determination unit configured to determine a pixel value of the pixel of interest in an image of the first-half sub-frame based on first conversion data defining correspondence between an input pixel value and the first coefficient, and an output pixel value;
a second peripheral pixel specifying unit configured to specify a plurality of second peripheral pixels disposed in the periphery of the pixel of interest in the image mentioned above;
a second difference coefficient determination unit configured to determine a plurality of second difference coefficients based on differences between each pixel value of the pixel of interest and the plurality of second peripheral pixels in an image of a frame subsequent to the one frame, and each pixel value of the pixel of interest and the plurality of second peripheral pixels in the image of the one frame;
a second coefficient determination unit configured to determine a second coefficient by performing an arithmetic operation using a second filter on each of the plurality of second difference coefficients; and
a second pixel value determination unit configured to determine a pixel value of the pixel of interest in an image of the second-half sub-frame based on second conversion data defining correspondence between an input pixel value and the second coefficient, and an output pixel value,
wherein, as the first coefficient and the second coefficient equal to each other are larger, a difference between the output pixel value corresponding to the input pixel value in the first conversion data and the output pixel value corresponding to the identical input pixel value in the second conversion data is larger.