Video enhancement and display power management
AssigneeMoxair, Inc.
InventorsAnanth Sankar, David Romacho Rosell, Anurag Bist, Praveen Dua, Sriram Sundararajan
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Abstract
In visual display devices such as LCD devices with backlight illumination, the backlight typically consumes most of device battery power. In the interest of displaying a given pixel pattern at a minimized backlight level, the pattern can be transformed while maintaining image quality, with a transform determined from pixel luminance statistics. Aside from, or in addition to such minimizing, a transform also can be used for image enhancement, for a displayed image better to meet a visual perception quality. In either case, the transform preferably is constrained for enforcing one or several display attributes.
Claims31
A computer method for generating a pixel display pattern from a pixel given pattern using a transform, the method comprising:
- (a) for at least one display attribute, determining at least one constraint on the transform;
- and
- (b) for at least one substantially uniform background luminance value and subject to the at least one constraint, determining the transform such that, if the pixel display pattern is displayed against the substantially uniform background, visual distortion as compared with the pixel given pattern is minimized.
A device for generating a pixel display pattern from a pixel given pattern using a transform, the device comprising:
- (a) a first device portion which, for at least one display attribute, is made for determining at least one constraint on the transform;
- and
- (b) a second device portion which, for at least one substantially uniform background luminance value and subject to the at least one constraint, is made for determining the transform such that, if the pixel display pattern is displayed against the substantially uniform background, visual distortion as compared with the pixel given pattern is minimized.
A processor for generating a pixel display pattern from a pixel given pattern using a transform, the processor comprising:
- (a) a first processor module which, for at least one display attribute, is instructed for determining at least one constraint on the transform;
- and
- (b) a second processor module which, for at least one substantially uniform background luminance value and subject to the at least one constraint, is instructed for determining the transform such that, if the pixel display pattern is displayed against the substantially uniform background, visual distortion as compared with the pixel given pattern is minimized.
A service for generating a pixel display pattern from a pixel given pattern using a transform, the service comprising:
- (a) a first service element which, for at least one display attribute, is for determining at least one constraint on the transform;
- and
- (b) a second service element which, for at least one substantially uniform background luminance value and subject to the at least one constraint, is for determining the transform such that, if the pixel display pattern is displayed against the substantially uniform background, visual distortion as compared with the pixel given pattern is minimized.
Dependencies are inferred from the claim text.