Patent ID: 11900005
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. The video wall of claim 14, wherein among the plurality of image display apparatuses, a controller of a first image display apparatus is configured to determine whether the video displayed on the plurality of image display apparatuses is repeatedly played back, and in response to the plurality of frames having varied luminance being repeatedly played back, the controller of the first image display apparatus is configured to extract the luminance value of each sub-pixel of the repeatedly played video during the first period of the repeated playback period, calculate the accumulated luminance value based on the extracted luminance value during the first period, and calculate a common compensation luminance value based on the calculated accumulated luminance value, and based on the common compensation luminance value, the controller displays the video during the second period following the first period.