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SCART aspect ratio checker

  1. Feb 14, 2008 #1
    I'm in the process of making a homebrew PVR and have a cable STB connected via a SCART->composite cable to a WinTV-PVR 350. This therefore loses the ability to know if the TV picture being sent is in widescreen or 4:3. I was looking into making some form of circuit/device that allowed the computer with the TV card in to detect what type of TV picture was being sent via the cable. I know that the 8th pin in a SCART cable is used to send this info (~6v for widescreen, ~12v for 4:3).

    This is where I become stuck :smile:. I was hoping someone here could recommend a circuit that would be able to connect to a serial port (RS232) and allow me to find out if the SCART cable was sending a widescreen or 4:3 picture.

    (PS. I hope this in the correct sub forum :smile:)
  2. jcsd
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