Method and apparatus for minimizing number of pixel data fetches required for a stretch operation of video images
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United States of America Patent
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Mar 10, 1998
Grant Date -
N/A
app pub date -
Sep 29, 1995
filing date -
Aug 30, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus to stretch video images in a graphics controller chip of a computer system. The graphics controller chip fetches four pixel data comprising two pixel data each from a first scan line and a second scan line of a source video image, and generates a set of additional pixels in a rectangular area defined by the four pixels. The graphics controller chip stores the pixels of rectangular portions in a display memory, and displays the pixel data of the stretched video image in a scan line order.
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