Using LCD TV as Display

I have a 12-inch iBook G4, and I wanted to use my LCD screen as my display. I bought a Apple Mini-DVI to Video Adapter, when I connected it up the picture looked grainy. It looks like it wasn't scaled up just blown up (if you understand that). I can understand this because the computer isn't really sending a digital signal, just a video output signal (i don't think that makes any sense either). Is there any adapter that will make it look just as good as on my computer, or a setting i can change. Thanks in advance!

The problem is the way the iBooks are designed to output a secondary video signal. In most computers, attaching a secondary monitor gives you the option to either mirror your first display (ie, a copy) or extend your desktop (giving you twice the space for, say, icons).
iBooks, on the other hand, only have the ability to mirror. The ability to extend your desktop to the external monitor has been disabled in the firmware. This means that your iBook, essentially, sends the *exact same* video signal to both screens. What you see on your laptop screen is what you get on the LCD. Including resolution.
If I recall correctly, you can scale that image down, but not up. The grainy image your describing is the signal being, as you said, blown up by the monitor itself.
Unfortunately, there's nothing you can do about this. There are ways of hacking this problem, but none of them are supported by Apple.

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