Direct Views can't do 720p?

Discussion in 'Displays' started by Frank@N, May 5, 2003.

  1. Frank@N

    Frank@N Screenwriter

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    Was talking to a HT sales guy who commented that 'direct views (CRT) can't do 720p, they'd burn up"

    True or false?
     
  2. Stephen Tu

    Stephen Tu Screenwriter

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    "Burn up"??? LOL. Of course CRT is capable of being designed to display 720p; it's no different from all the CRT computer monitors that can do that plus even higher resolution + higher refresh rate. There have been a few CRT direct-views produced that could do 720p.

    What is true is that nearly all direct-view HDTVs available won't do it; it's cheaper not to support 720p display. Many will accept 720p as input, converting to 1080i for display.
     
  3. David Lorenzo

    David Lorenzo Stunt Coordinator

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    It's true that direct view consumer sets, save computer monitors and monovision sets, can't do 720p natively. I have no idea what he was talking about when he said they would "burn up" though.
     
  4. Allan Jayne

    Allan Jayne Cinematographer

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    720p is more scan lines per second than 1080i. Some TV electronics (I don't know which and don't know how to predict which) will be damaged by feeding in a scan rate other than what they normally accept.

    The very first IBM PC had in its manual a cautionary notice about this in reference to choosing and connecting a monitor.

    Although almost all computer monitors handle 600p (for 800x600) and 768p (for 1024x768 non-interlaced) many do not accept 720p.

    Video hints:
    http://members.aol.com/ajaynejr/video.htm
     
  5. John Royster

    John Royster Screenwriter

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    I remember some direct view models that did 720p laster year? Wasn't there a panasonic that did?
     
  6. Daniel Becker

    Daniel Becker Second Unit

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    The Sony 32" HS500 accepts a 720p signal. I know because I just bought one. [​IMG]




    Dan.B
     
  7. Ken Chan

    Ken Chan Producer

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    Accepting 720p and displaying it as such without scaling are two separate things.

     
  8. David Lorenzo

    David Lorenzo Stunt Coordinator

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    Any modern computer monitor should be able to handle 720p with ease. I have a 4 year old Philips 19" monitor and it can do 1920x1080p with no problem. Not that I ever use it, but it shows you just how "modern" HDTV direct view technology is right now.
     

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