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.
ADVERTISER DISCLOSURE: SOME OF THE PRODUCTS THAT APPEAR ON THIS SITE ARE FROM COMPANIES FROM WHICH TECHNOLOGYADVICE RECEIVES COMPENSATION. THIS COMPENSATION MAY IMPACT HOW AND WHERE PRODUCTS APPEAR ON THIS SITE INCLUDING, FOR EXAMPLE, THE ORDER IN WHICH THEY APPEAR. TECHNOLOGYADVICE DOES NOT INCLUDE ALL COMPANIES OR ALL TYPES OF PRODUCTS AVAILABLE IN THE MARKETPLACE.