DISCRETE LED BACKLIGHT CONTROL FOR A REDUCED POWER LCD DISPLAY SYSTEM
First Claim
Patent Images
1. A rearview assembly, comprising:
- a backlit liquid crystal display positioned behind a mirror element with respect to a viewer, wherein spatially controlled backlighting of said backlit liquid crystal display is a function of content displayed by said backlit liquid crystal display.
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Abstract
Backlit LCD displays are becoming commonplace within many vehicle applications. The unique advantage of this invention is that it optimizes system power savings for display of low dynamic range (LDR) images by dynamically controlling spatially adjustable backlighting. This is accomplishes through use of a control technique that takes into account the sequential nature of the video display process.
186 Citations
24 Claims
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1. A rearview assembly, comprising:
a backlit liquid crystal display positioned behind a mirror element with respect to a viewer, wherein spatially controlled backlighting of said backlit liquid crystal display is a function of content displayed by said backlit liquid crystal display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A rearview assembly, comprising:
a backlit liquid crystal display positioned behind a mirror element with respect to a viewer, wherein a number of light emitting diodes within a spatially controlled backlighting of said backlit liquid crystal display is an even fraction of a number of pixels of said backlit liquid crystal display. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A rearview assembly, comprising:
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a backlit liquid crystal display positioned behind a mirror element with respect to a viewer, wherein spatially controlled backlighting of said backlit liquid crystal display is a function of content displayed by said backlit liquid crystal display; a first processor configured to receive an ambient light signal and a glare light signal, wherein an intensity of said backlighting is a function of said ambient light signal and said glare light signal; and a graphical processing unit configured to control said content displayed by said backlit liquid crystal display. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification