Edge dimming control device and method

An edge dimming control method of an edge dimming control device, comprising:

• receiving an image frame and a dimming command;
• analyzing the dimming command;
• obtaining an updated region and a non-updated region of the image frame based on the dimming command, and determining whether the non-updated region is divided and identified into a plurality of divided regions;
• determining a divided region to be dimmed among the plurality of divided regions when the non-updated region is divided into the plurality of divided regions;
• calculating a dimming weight to be applied to the divided region to be dimmed;
• applying edge dimming to the non-updated region of the image frame based on the calculated dimming weight;
• and
• controlling dimming of the display device such that the applied edge dimming is output.

A display device, comprising:

• a display configured to display an image;
• and
• an edge dimming control device configured to control dimming of the display,
• wherein the edge dimming control device comprises:
• a source module configured to provide a dimming command for an image frame;
• and
• a sink module configured to control dimming of the display device based on the dimming command,
• wherein the sink module is configured to, when the dimming command is input, obtain an updated region and a non-updated region of the image frame based on the dimming command, determine whether the non-updated region is identified, calculate a dimming weight for the non-updated region when the non-updated region is identified, and control dimming of the display such that edge dimming is applied to the non-updated region of the image frame based on the calculated dimming weight.