How many colors can the iPod touch display?

Discussion in 'iPod touch' started by cLin, Feb 15, 2008.

  1. cLin macrumors member

    Joined:
    Sep 10, 2006
    #1
    I can't seem to find that specification anywhere on apple's site. They mentioned that the 5G iPod display is "2.5-inch (diagonal) QVGA transflective, over 65,000-color liquid crystal display with white LED backlight."

    I want to know how many colors it can display on the LCD screen (it's 65,000 for the 5G).
     
  2. stevento macrumors 6502

    stevento

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    Dec 10, 2006
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    Los Angeles
    #2
    i learned about this in compter science
    the number of colors it can have must be a power of 2
    2^16 = 65,536
     
  3. BrownManUPS macrumors 6502a

    BrownManUPS

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    Jul 30, 2007
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    California
    #3
    Where did the 16 come from? Just curious.
     
  4. rsm5068 macrumors regular

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    Jan 21, 2008
    #4
    theoretically, it should be able to support all combinations of RGB @ 256 (assuming you include the 0 values) so 256^3 = 16777216. Now some of those colors are going to be the same shade, but they are all technically different.
     
  5. cLin thread starter macrumors member

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    Sep 10, 2006
  6. rsm5068 macrumors regular

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    Jan 21, 2008
    #7
    I believe that the 16 in 2^16 comes from the fact that it uses a 16-bit graphics processor.
     
  7. cLin thread starter macrumors member

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    Sep 10, 2006
    #8
    I heard rumors that it has 18-bit color depth, can anyone confirm that? How come Apple doesn't list this damn thing on its spec page, you'd figure some people would like to know.
     
  8. Kyprioth657 macrumors newbie

    Joined:
    Oct 8, 2007
    #9
    Well, I'm colorblind, so significantly fewer shades for me. Particularly between red and green. I see one color for those two....I call it greed. Which is fitting since red's the color of blood and green's the color of money. Blood money greed.
     
  9. antibact1 macrumors 6502

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    Jun 1, 2006
    #10
    No it comes from the fact that each pixel is displayed using 16 bits, with each sub-pixel (RGB) using 5.33 bits.
     
  10. Muncher macrumors 65816

    Muncher

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    Apr 19, 2007
    Location:
    California
    #11
    Actually, the green (being the color the human eye is most sensitive to) usually steals the 16th bit. That makes it:

    Red: 5 bits
    Green: 6 bits
    Blue: 5 bits

    (There are other ways that devices will allocate bits between colors, but this one is by far dominant)

    16-bit color is common in mobile devices, so I'd put my money on the touch having a 16-bit color depth. If it isn't 16-bit, it's definitely 18-bit (6 bits per color).
     
  11. miranon macrumors newbie

    miranon

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    Jun 7, 2006
    #12
    According to anythingbutipod.com it can display only 65,536 colors (16-bit). :rolleyes:
     
  12. IgnatiusTheKing macrumors 68040

    IgnatiusTheKing

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    Nov 17, 2007
    Location:
    das Fort
    #13
    Here's a question: has anyone ever looked at their touch and seen a color it couldn't display? Ideally it would display millions of colors, but it looks pretty spectacular to me.
     
  13. miranon macrumors newbie

    miranon

    Joined:
    Jun 7, 2006
    #14
    Try to compare Ipod Touch screen with amoled screen (iriver clix 2) or even the same LCD screen from Samsung P2:
     

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  14. IgnatiusTheKing macrumors 68040

    IgnatiusTheKing

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    Nov 17, 2007
    Location:
    das Fort
    #15
    It's kind of hard to compare anything in those pictures.
     

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