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Television Vertical Interval

30 times per second, TV monitors scan the screen.  At the end of the scan, the beam moves back to the top (red line.) There are also unused scan lines above the picture (yellow line.) Text can be encoded in this space without affecting the TV picture.

You could adjust the Vertical Hold on a TV set showing WTBS, moving the yellow line into the visible area, and see Stargate data as dots.


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[The Stargate Internet Museum] [Tour the Museum] [The UNIX License] [Did Al Gore Invent the Internet?] [The ARPANET, 1969-1982] [Early UNIX Development] [Berkeley UNIX, 1979-1984] [UUCP and E-mail] [Usenet, 1979] [Early MS Windows 1.0] [The UUCP Project, 1984] [CUBIX Computer] [Stargate Project] [Television Vertical Interval] [Stargate Architecture] [UNIX PC, 1985] [.COM Created] [SPARCstation 1, 1992] [A Merger] [Epilogue]