Why is there no good scandoublers to be found?

[bubba]

Do any scan doublers handle 24-bit color?  The best one I've heard of is 16-bit.  

I suspect there is a huge market for scandoublers right now.  I'd gladly pay $200 for a 24-bit AGA scan doubler/flicker fixer, especially of it handled the super-hi res and super72 modes.

I'd build one myself if I had the skills.

-bubba

[bubba]

Wow, congrats on building one.  What are the specs?  Can it do 24-bit color and non-15khz modes?  I'm sure the design could be refined by an electronics manufacturer for production.

Regarding the connections, you could use a vga connector or bnc's on the scan dobuler for R/G/B/Vsyn/Hsync, and require the amiga to have a 23-to-15 pin adapter.  If you used bnc, you would just need a vga adapter + break-out cable.

I'm not a electrical engineer, but these circuits look pretty simple.  I took a look at the picture of the circuit board for the DCE scan doubler and could easily google for the chips on board: a 6-bit ADC from Phillips, a 24-bit DAC, ram chips, and one mystery chip.


Let's grass roots this thing!

-bubba

[bubba]

One benefit of the 23-pin connector is the availability of  power off the pins.  With a VGA connector, you would need an external power source which would add to the total package cost.  Anyway, with all the A1200 power issues it might be the better design option.  

So, how much would it cost to build a prototype?  Any idea on manufacturing costs?  Someone should create a poll to see how many people would actually buy one.  

Perhaps we could start the American version of Individual Computers with this scan doubler!

[bubba]

This company makes a NTSC/PAL scan doubler and flicker fixer single-chip solution, the AL250, that will handle an RBG source:

http://www.averlogic.com.tw/

The input is only 16-bit RGB, so AGA would have the same quality degradation with many of the current scan doublers.  Can someone comment on the suitablility of this chip for an Amiga flicker fixer?

-bubba