Newbie prog scan question, sorry!

Discussion in 'Projectors, Screens & Video Processors' started by Miyazaki, Oct 24, 2003.

  1. Miyazaki

    Miyazaki
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    Hi, i am a bit confused about the different interlaced and progressive video modes.

    i know that one of the highest you can get is 1080i.
    Does that mean it displays 540 lines at a time?

    Also i think theres a progressive mode called 740p.

    so in the same amount of time it takes the 1080i to display 1080 lines, the 740p has displayed 1480 lines?

    What are the advantages and disadvantages of each?

    And why are there different modes? Is there a progressive standard persay?

    For instance when it becomes more mainstream will everything be in 740p?

    I just find it rather confusing. Hope someone can help cheers,

    guru.
     
  2. Dutch

    Dutch
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    Hi guru,

    There are various ATSC HiDef resolutions which should all be handled by an ATSC decoder. They range from 720p up to 1080p at various frame rates. Most of the US broadcasters have chosen 1080i/60, with the others going for 720p - EuroHD who start broadcasting next January, have gone for 1080i/50. Hopefully, HD-DVD will be in 1080p format which would require a new generation of LCD and plasma displays to get the full benefit. Hope this helps.

    Steve
     

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