METHOD AND APPARATUS FOR PRESENTING OVERLAY IMAGES
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United States of America Patent
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Issued Date -
Jul 8, 2010
app pub date -
Jan 6, 2009
filing date -
Jan 6, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and system for displaying overlay images on top of base images on a digitally-controlled display device. If the overlay image comprises an area at which only the values of the base image are to be displayed, the area or part thereof is indicated, and pixels of the overlay image within the area are not fetched from an image source and are not mixed with the corresponding values of the pixels of the base area. Thus, multiple fetch and mixing operations are saved, which provide better resource utilization of the system, and bandwidth and processing saving.
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