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what is overscan

Discussion in 'Plasma TVs' started by brackenlamb, Nov 18, 2004.

  1. brackenlamb

    brackenlamb
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    i have heard a few people talk about it but i ve no idea what it is ? :lease:
     
  2. LV426

    LV426
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    It's a throwback that still exists.

    TVs typically scan the picture on an area that is fractionally larger than the tube (or whatever). So a little bit of all four sides of the image is cropped - outside the visible area of the tube. Theoretically all important contents of the image are wholly within a "safe area" that's smaller than the full image size.

    It was done to conceal minor inaccuracies in the setup of CRT tubes and/or in the content of TV studio output and/or artefacts introduced by the broadcasting process any or all of which might make the picture slightly offset in one direction or another or contain some other irregularily at the extreme edges.
     
  3. happyh

    happyh
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    When Gordon calibrated my viera we found it was cropping a huge area from the edges. It's not now!
     

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