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VBI

Webopedia Staff
Webopedia Staff

Short for vertical blanking interval, the part of a television transmission signal that is blanked, or left clear, of viewable content, to allow time for the television’s electron gun to move from the bottom to the top of the screen as it scans images. This blank area is now being used to broadcast closed caption and HTML-formatted information.

Webopedia Staff
Webopedia Staff
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

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