I
[email protected]
- Jan 1, 1970
- 0
I asked this question on an electronics forum and it was suggested
that I ask it here. Anyways, here's my problem:
I'm trying to make an LCD controller for a 18 bit LCD panel that will
take a DVI or VGA input (yes, I know I am insane). I've found an
appropriate 18 bit FPD-Link LVDS transmitter but the only DVI
converter chips I can find output 8 bit per channel RGB (24 bit
color). So what I need is either a chip that can convert the 8 bit
color the DVI converter outputs to the 6 bit color the LVDS
transmitter needs OR a different LVDS transmitter that does the
conversion internally. I have found LVDS chips that can to the 8 to 6
bit conversion internally, but have low resolution limits like 800x600
-- I need them to be able to do 1400x1050 (SXGA+) or 1600x1200 (UXGA).
This is driving me a little bit nuts because I know there has to be an
easy way to do this, there are literally millions of 18 bit LCD
monitors that take DVI and/or VGA inputs. If anybody could give me a
clue on how to do this, whether it's finding a part I didn't know
existed or telling me I'm going about this all wrong, I would be
extremely grateful.
I have considered what it would take to build something that would do
this conversion myself, and I think it's a bigger project than I'm
willing to tackle, especially since I know there has to be an easier
way.
BTW if anybody is unclear on this, I can't just use the most
significant bits and forget about the other two, the way 24 bit color
is converted for 18 bit LCDs is by using dithering to create a color
depth that resembles 24 bit color (or at any rate looks a lot better
than just using straight 18 bit color).
I know this is a pretty esoteric area of electronics, but hopefully
somebody out there will be able to help me out with this one.
Thanks in advance
--Michael Tripp
that I ask it here. Anyways, here's my problem:
I'm trying to make an LCD controller for a 18 bit LCD panel that will
take a DVI or VGA input (yes, I know I am insane). I've found an
appropriate 18 bit FPD-Link LVDS transmitter but the only DVI
converter chips I can find output 8 bit per channel RGB (24 bit
color). So what I need is either a chip that can convert the 8 bit
color the DVI converter outputs to the 6 bit color the LVDS
transmitter needs OR a different LVDS transmitter that does the
conversion internally. I have found LVDS chips that can to the 8 to 6
bit conversion internally, but have low resolution limits like 800x600
-- I need them to be able to do 1400x1050 (SXGA+) or 1600x1200 (UXGA).
This is driving me a little bit nuts because I know there has to be an
easy way to do this, there are literally millions of 18 bit LCD
monitors that take DVI and/or VGA inputs. If anybody could give me a
clue on how to do this, whether it's finding a part I didn't know
existed or telling me I'm going about this all wrong, I would be
extremely grateful.
I have considered what it would take to build something that would do
this conversion myself, and I think it's a bigger project than I'm
willing to tackle, especially since I know there has to be an easier
way.
BTW if anybody is unclear on this, I can't just use the most
significant bits and forget about the other two, the way 24 bit color
is converted for 18 bit LCDs is by using dithering to create a color
depth that resembles 24 bit color (or at any rate looks a lot better
than just using straight 18 bit color).
I know this is a pretty esoteric area of electronics, but hopefully
somebody out there will be able to help me out with this one.
Thanks in advance
--Michael Tripp
