Front porch

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In television broadcasting, the front porch is a brief (about 1.5 microsecond) period inserted between the end of each transmitted line of picture and the leading edge of the next line sync pulse. Its purpose was to allow voltage levels to stabilise in older televisions, preventing interference between picture lines.

[edit] See also

• Back porch
• Vertical blanking interval

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Categories: Film and video technology | Electronics stubs | Television stubs

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• This page was last modified 07:43, 17 March 2007 by Wikipedia user Dputig07. Based on work by Wikipedia user(s) Mindmatrix, RevRagnarok, Pilotguy, AntiVandalBot, Anand Karia, Cydebot, Dtcdthingy, Whitepaw, Shaddack, A2Kafir, Mulad, Gary D and Topbanana and Anonymous user(s) of Wikipedia.
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