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zvbi - Raw VBI, Teletext and Closed Caption decoding library
- Description:
ZVBI provides functions to capture and decode VBI data. The vertical
blanking interval (VBI) is an interval in a television signal that
temporarily suspends transmission of the signal for the electron gun
to move back up to the first line of the television screen to trace
the next screen field. The vertical blanking interval can be used to
carry data, since anything sent during the VBI would naturally not be
displayed; various test signals, closed captioning, and other digital
data can be sent during this time period.
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