US 11,900,005 B2
Video wall
Hyunchul Noh, Seoul (KR); Jeonghyu Yang, Seoul (KR); and Yunjun Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/438,219
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 13, 2020, PCT No. PCT/KR2020/003537
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/185035, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 10-2019-0028900 (KR), filed on Mar. 13, 2019.
Prior Publication US 2022/0179611 A1, Jun. 9, 2022
Int. Cl. G06F 3/14 (2006.01); G09G 3/3208 (2016.01)
CPC G06F 3/1446 (2013.01) [G09G 3/3208 (2013.01); G09G 2300/026 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/045 (2013.01); G09G 2320/046 (2013.01); G09G 2320/103 (2013.01); G09G 2360/145 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A video wall comprising:
a plurality of displays arranged adjacent to each other;
an image divider configured to divide an input image into a plurality of images for displaying on the plurality of displays; and
at least one controller configured to control a plurality of image display apparatuses corresponding to the plurality of displays,
wherein in response to a video including a plurality of frames having varied luminance being repeatedly played back on the plurality of image display apparatuses, the at least one controller is configured to extract a luminance value of each sub-pixel of the repeatedly played video during a first period of a repeated playback period, calculate an accumulated luminance value based on the extracted luminance value during the first period, and calculate a luminance compensation value based on the calculated accumulated luminance value during the first period, and the plurality of displays display the video based on the luminance compensation value during a second period following the first period,
wherein the luminance compensation value is inversely proportional to the varied luminance of the plurality of frames.