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Underscan

A video or computer image reduced so that all four edges are visible on-screen, leaving it surrounded by black borders.

The opposite of overscan. In underscan, a video or computer image is reduced so that all four edges are visible on-screen, leaving it surrounded by black borders. Underscan is used to show what is happening in the blanking period and at the beginning and end of scan lines and frames. Underscanning can uncover latent image problems for identification and correction.

Key Terms

beginning
black borders
blanking period
computer image
definition
edges
end scan lines
opposite
usage
video

Additional Resources

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Acronymn

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Synonymns

Underscan
(none found)

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Sources & Credits

Last modified on September 1 2019
Content adapted from Wikipedia
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