>I'm curious if it is possible to interface the Micro-Display display >unit used by the DH4400 to the LCD interfaces used in many of the >Advantech PCM boards. This seems to be a standard interface, at >least among the Advantech product line. Can I drive the Micro- >Display via the LCD interface instead of using PCM VGA output through >the DH4400 controller? I suspect I may need some hardware between them. You can do anything with enough interface hardware. ;-) Basically, it looks possible but non-trivial. One big hurdle is that the microdisplay is intended for field-sequential color, whereas pretty much every LCD interface outputs parallel RGB signals. If you're willing to drop down to monochrome, this becomes much easier... Alternately you're looking at either a frame-buffer board or some kernel-level hacks to reorganize your video memory. (I found that monochrome can actually be an advantage, because the field- sequential displays love to run at high frame rates, and a 200Hz-refresh image is rock solid even while the display is bouncing around in front of your eye while you're walking around.) The other issues... analog versus digital signals, various timing stuff, and the fact that the microdisplay wants 4 pixels simultaneously... well, they're annoying but tractable if you don't mind building an interface board. I would classify it as a "summer project" instead of a "weekend project", though, so it depends how badly you want to do this versus just throwing something together with VGA quickly if inelegantly. - Edward Keyes_______________________________________________ Wear-Hard mailing list
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