Apparatus and Method for Modeling the Light Field of a Local-Dimming LED Backlight for an LCD Display
First Claim
1. An apparatus for displaying images comprising:
- an LCD panel comprising a plurality of pixels for displaying the images;
a backlight comprising a plurality of light sources, wherein each of the plurality of light sources is associated with one of a plurality of zones and each of the plurality of zones comprises a plurality of grid points; and
a controller coupled to the LCD panel and the backlight configured to retrieve contour data associated with each of the plurality of light sources, wherein the contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of the plurality of grids, and wherein the controller is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid.
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Accused Products
Abstract
An apparatus for displaying images. The apparatus comprises: an LCD panel comprising a plurality of pixels for displaying the images; and a backlight comprising a plurality of light sources. Each of the plurality of light sources is associated with one of a plurality of zones and each of the plurality of zones comprises a plurality of grid points. A controller coupled to the LCD panel and the backlight is configured to retrieve contour data associated with each of the plurality of light sources. The contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of the plurality of grids. The controller is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid.
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Citations
20 Claims
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1. An apparatus for displaying images comprising:
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an LCD panel comprising a plurality of pixels for displaying the images; a backlight comprising a plurality of light sources, wherein each of the plurality of light sources is associated with one of a plurality of zones and each of the plurality of zones comprises a plurality of grid points; and a controller coupled to the LCD panel and the backlight configured to retrieve contour data associated with each of the plurality of light sources, wherein the contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of the plurality of grids, and wherein the controller is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. An integrated circuit for use with an LCD panel and a backlight comprising a plurality of light sources, each of the plurality of light sources associated with one of a plurality of zones and each of the plurality of zones comprising a plurality of grid points, wherein the integrated circuit is configured to retrieve contour data associated with each of the plurality of light sources, wherein the contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of a plurality of grids, and wherein the integrated circuit is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid.
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16. For use with an LCD panel, a method for adjusting lighting levels of a backlight of the LCD panel, the backlight comprising a plurality of light sources, each of the plurality of light sources associated with one of a plurality of zones and each of the plurality of zones comprising a plurality of grid points, the method comprising:
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retrieving contour data associated with each of the plurality of light sources, wherein the contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of a plurality of grids; and determining a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid. - View Dependent Claims (17, 18, 19, 20)
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Specification