Anti-aliasing television signals for display
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United States of America Patent
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Jun 10, 2003
Grant Date -
N/A
app pub date -
May 18, 1998
filing date -
May 18, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention provides an improved method and system for presenting television signals, including anti-aliasing of text with respect to a background. The background color is determined relatively locally for each element to be anti-aliased, and text or other graphics overlaid on that background are anti-aliased with respect to each relatively local background color. Also, anti-aliasing can be applied to blur text and graphics more vertically than horizontally to reduce flicker, and to blur chrominance more than luminance to reduce cross-chrominance artifacts resulting from Y/C separation. Similar techniques may be used for filtering images in addition to anti-aliasing text characters.
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Family
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Cited Art Landscape
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