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Reply-To: "Fred Bartoli"
From: "Fred Bartoli"
Subject: Re: 4096 colors STN LCD working ?
Date: Sun, 8 Dec 2002 16:49:10 +0100
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NNTP-Posting-Date: 08 Dec 2002 16:47:45 MET
"Jim Kearney" a écrit dans le
message news: jj8I9.140624$GR5.firstname.lastname@example.org...
> >"fred bartoli" wrote in message
> > So I don't understand how the full range of colors is achieved and
> > through LCD controlers chips didn't give me the necessary infos.
> > The only way I can see is by having the controler "duty cycling" the 3
> > bits. This with the inertia of STN LCDs should do the trick.
> > Am I right ?
> Yes, 'frame rate modulation' is indeed how shades are generated on STN
> Cirrus and Sharp in particular have some documentation that you might find
> using Google.
> When I implemented this in an FPGA last year, I found that the smearing
> dithering methods were absolutely critical to avoid 'beats' and 'waves' in
> the display... it took some experimentation to achieve a display where
> large and small colored areas displayed well.
That's it Jim. Now that I have the right wording, I can find a lot of infos
It's not that I want to build my controler (it's a one time project), but I
wanted to be sure :
- to have the display I wanted (buying overseas)
- to identify the right LCD controler.
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