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

Claim 2:
3. The video wall of claim 1, 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,
wherein in response to the video including the plurality of frames having varied luminance being repeatedly played back on the plurality of image display apparatuses, controllers of the respective image display apparatuses are 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 the luminance compensation value based on the calculated accumulated luminance value, and the controllers display the video based on the luminance compensation value during the second period following the first period.