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US 2006/0187233 A1Published application
Dynamic image luminance adjustment based on backlight and/or ambient brightness
OwnerPaul Diefenbaugh, David Wyattinventors
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Abstract
Methods and apparatuses for the application of image intensity and luminance adjustment and gamma adjustment for the purpose of compensating perceived image brightness. Thereby enhancing the range of display backlight brightness adjustment that may be applied to conserve power, while minimizing impact to image color shade, hue or saturation characteristics.
Claims21
1-52. (canceled)
An apparatus comprising:
- a memory to store color data for an image to be displayed on a display device;
- a first color transform agent communicatively coupled with the memory to modify the color data according to a first transform stored in a first look-up table;
- a second color transform agent communicatively coupled with the memory to further modify the color data according to a second color transform determined by a second look-up table or gamma transfer function.
A method comprising:
- modifying color data for one or more portions of an image using a first color transform;
- modifying the color data for one or more portions of the image using a second color transform, wherein the second color transform is based, at least in part, on one or more selected from an image brightness profile and an ambient light level;
- and
- storing the modified color data in a frame buffer.
1 more element
An article comprising a computer-readable medium having stored thereon instructions that, when executed, cause one or more components of an electronic system to:
- modify color data for one or more portions of an image using a first color transform;
- modify the color data for one or more portions of the image using a second color transform, wherein the second color transform is based, at least in part, on one or more selected from an image brightness profile and an ambient light level;
- and
- store the modified color data in a frame buffer.
1 more element
A system comprising:
- a memory to store color data for an image on a display device;
- a first color transform agent communicatively coupled with the memory to modify the color data according to a first transform stored in a first look-up table;
- a second color transform agent communicatively coupled with the memory to modify the color data according to a second color transform determined by a second look-up table or gamma transfer function;
- and
- an ambient light sensor.
2 more elements
Dependencies are inferred from the claim text.