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How many total scanning lines are required to make a 1080i picture?

Discussion in 'General TV Discussions Forum' started by MuffKing, Nov 25, 2004.

  1. MuffKing

    MuffKing
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    Or is this a trick question?
     
  2. AV Junky

    AV Junky
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    1080 scan lines are needed to show it at native resolution. Was it a trick question?
     
  3. MuffKing

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    It probably was mate, but it was a question asked to me by someone else and I wasn't sure of the answer as a standard 625i picture only cosists of 576 lines.
     
  4. Gordon @ Convergent AV

    Gordon @ Convergent AV
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  5. Calleva

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    The total number of scan lines (i.e. including V sync & Blanking) in a 1080i HD signal is 1125.

    There are 1080 lines of image (active picture) in 2 fields of 540 active lines each, the rest is blanking period including V syncs.

    :lesson:
     
  6. MuffKing

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    I think I get that one.
    2 fields of 540 visible lines make up 1 frame of 1080 visible lines, which would be comparable to 1125p which would also show 1080 visible lines?
     

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