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PAL to NTSC conversion

Discussion in 'Electronic Design' started by EBG, Dec 1, 2004.

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  1. EBG

    EBG Guest

    I want to output NTSC 60hz from a PAL VCR.

    There are many digital converters I could buy but....

    Is there a chip solution for this? (That doesn't need software....even an
    osolete older chip)........something that is plug and play.......PAL 50hz
    input gives NTSC 60hz output?

  2. This is a Non Trivial problem

    It would be cheaper to buy a dual standard VCR



    Serious error.
    All shortcuts have disappeared.
    Screen. Mind. Both are blank.
  3. The 'simple' answer, is no.
    Converting PAL 50Hz, to NTSC 50Hz, is relatively simple, and there are
    several chips to do this. However to convert properly between 50Hz, and
    60Hz, requires a framestore, capable of holding several frames (5
    minimum), and interpolating these to produce 6 frames out. It is not a
    simple/cheap project, or something that can be done in a single chip. The
    development cost of such a unit, would make the price of 'off the shelf'
    solutions look cheap. Beware though, that some of the cheaper units, do
    cut corners, and don't give very good results.

    Best Wishes
  4. Ban

    Ban Guest

    I have a Panasonic NV-W1(from 1992) VCR, that can convert from/into
    anything. But beware these are still expensive used.Samsung makes
    concurrently a model, I think. You can buy a stand alone converter for
    300bucks: cmd950, cmd1200
  5. Jamie

    Jamie Guest

    are you really sure you want to take on a project like that ?
    its not as simple as you make it sound.
  6. There is no chip, but you can try here:

    They list the NTSC version of an old product called the PC/TV by
    Tecmar. I know the PAL version of this unit converts PAL video to
    640x480 VGA at non-interlaced scan (~31 kHz), and the picture looks
    good. The software drivers have settings that will do interlaced
    output at RS-170A scan rates, but I have never seen the quality of the
    picture - YMMV. Perhaps a more modern video capture device could be
    modified to suit your needs.

    Frank Raffaeli
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