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Mini LCD screen

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chrimeg:

Just wondering if anyone has done this outside the PSONE screens as of yet.

I've notice 5", 4" etc picture frame LCD screens now going for around $15.00.

Has anyone ever interfaced these types of screens into their cabinets as a secondary monitor to display controls etc.

I've been thinking of this for quite a bit of time now as they have gotten so cheap. Just can't seem to find a way to interface them.

Anyone have an idea on how to do this or where to find hacks for these style screens. I'd assume its just an interface to convert SVGA/S-VIDEO/RGB onto the mini LCD.

Beretta:

dunno.. i'd say it probably varies from model to model.

it's a neat idea if someone gets it right, i would'nt except to see s-video in one.. perhaps vga but im sure it wont be as simple as opening it up and finding a vga connector.

or it could use something proprietary .. im just speculating here.

Blanka:

Forget the picture frames. They are hard to adapt to moving images. I've seen a portable-PS2 pack on eBay for 39 euros, with a case and a 5 inch LCD screen for the PS2 image. Guess that one eats composite or S-video.

MonMotha:

Most of those small LCD screens have a totally non-standard interface (as far as anything you'll see).  It's typically parallel digital RGB data clocked at some rate with some synchronization signals (hsync, vsync, den, pclk, and sometimes some others for no apparent reason).  Every once in a while you'll fine one that wants parallel RGB with embedded sync/SAV/EAV ala BT.656.  Some accept 4:2:2 YCbCr for some strange reason.

Some of the larger panels (mostly intended for laptop usage) accept LVDS at 7x clock on 3,4, or sometimes 5 pairs plus the LVDS clock generally (but not always) at the pixel clock rate.

Connectors are almost always a 0.5mm pitch (or sometimes smaller!) flat flex cable.  Not the easiest thing to interface with mechanically, and you certainly don't have parallel digital RGB floating around anywhere, anyway.

Some devices have a board that accepts analog inputs (either RGB, YPbPr, Y/C or composite), digitizes it, formats it for the panel, and spits it back out.  Those are handy if you find a model with such a board as interfacing is easy, but generally display quality is iffy at best due to poor quality scalers.

chrimeg:

I remember a post somewhere where a person took an old phone LCD and interfaced it to display images from the computer like a second screen. He eventually modded it into a mouse and it would display slide show images when connected to the computer.

I'd love to be able to interface a small LCD sceen into my bezel that would show game controls once a game is selected or being played.

I'll see if I can relocate that link and post it at some point. Meanwhile if anyone else has ideas on how to do this please post how you plan/done or trying to do it.


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