SIGNAL GENERATION FOR LED/LCD-BASED HIGH DYNAMIC RANGE DISPLAYS

摘要

A method of operating a high dynamic range display device includes: accessing (201) an image signal; Generating (202) an intermediate backlighting drive signal for an individual backlight element of the backlighting unit in response to the video signal; (203) convoluting the intermediate backlighting drive signal with a point spread function of the backlighting unit; Deriving (204-207) at least one new backlighting drive signal in response to the convolux line step; Determining (208) a display error associated with the plurality of available light shutter signals of the front end unit having separate optical shutters and having a higher resolution than the backlighting unit and associated with the at least one new backlighting drive signal; And driving the display device with a combination of a shutter signal for reducing the display error and a new backlighting drive signal for another available optical shutter signal different from the generated intermediate backlighting drive signal (209).