This invention discloses a new system approach to compensate the brightness non‐uniformity of
local dimming display. An accumulator is in between GPU and display panel to keep accumulating
the loading of each zone. When the compensation is triggered, the accumulated loading is feedback
to GPU, and then stress the zones with lower accumulated loading to the same level of zones with
higher accumulated loading. In the end all the zones have the same accumulated loading.
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INC, HP, "SYSTEM APPROACH TO COMPENSATE THE BRIGHTNESS NON-UNIFORMITY OF LOCAL DIMMING DISPLAY", Technical Disclosure Commons, (January 30, 2020)