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vertical blanking interval
(redirected from VBI)

    Also found in: Acronyms, Wikipedia, Hutchinson 0.01 sec.
vertical blanking interval
The part of a TV signal that is sent between each video frame. In North American TV (NTSC), the vertical blanking interval (VBI) takes up the last 45 lines of each 525-line frame. Its purpose is to allow the TV time to reposition its electron beam from the bottom of the current frame (screen) to the top of the next one. This non-viewable part of the signal is used to transmit closed-caption content. See datacasting, V-chip and ATV Forum.
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Project team leader and VBI Professor Brett Tyler said: "With the massive data set from the CLF now in hand, the data-analysis phase of the project will begin and is expected to take 18 months.
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These VBI units are built with seven components that are used across different makes and models and can be personalized with a custom-designed top panel.
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VBI units are designed on common building blocks with seven common components that are used across different makes and models, which are customizable to specific end-user needs.
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