Dynamic backlight adaptation for black bars with subtitles

Computer graphics processing and selective visual display system – Display driving control circuitry – Adjusting display pixel size or pixels per given area

Reexamination Certificate

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Details

C348S556000, C348S913000

Reexamination Certificate

active

08035666

ABSTRACT:
Embodiments of a system that includes one or more integrated circuits are described. During operation, the system receives a video image, that when displayed, includes a picture portion, a non-picture portion, and a subtitle which is superimposed on at least a subset of the non-picture portion, where the non-picture portion has an initial brightness value. Then, the system scales the brightness of pixels corresponding to a remainder of the non-picture portion of the video image to have a new brightness value that is greater than the initial brightness value to reduce user-perceived changes in the video image associated with backlighting of a display that displays the video image, where the remainder of the non-picture portion excludes the subset of the non-picture portion.

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Kerofsky, Louis et al., “26.2: Distinguished Paper: Brightness Preservation for LCD Backlight Reduction”, Sharp Laboratories of America, Camas, Washington, USA, 1242 SID 06 Digest.

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