Re: On SpectraView 2180WG LCD
Re: On SpectraView 2180WG LCD
- Subject: Re: On SpectraView 2180WG LCD
- From: William Hollingworth <email@hidden>
- Date: Sun, 08 Jan 2006 00:14:16 -0600
While the Matrox board has 10 bit DACs (as do ATIs), this is of course only
useful for older analog monitors. Modern digital DVI monitors are not able
to take advantage of this.
Additionally, the data going into the 10 bit DACs is still 8 bit data from
the frame buffer but going through an 8 in x 10 bit out LUT. While having a
10 bit LUT on the video card is a great step forward, it is useless on
todays digital monitors since single-link DVI is an 8 bit bottleneck.
The ATI Avivo chipset mentioned that features 10 and 16 bit output is
currently only really useful for motion video, since the video stream data
can be processed (gamma, de-interlacing, color conversion, scaling etc.)
within the card at higher than 8 bit depth.
However until the core OSs and applications are updated to support frame
buffers of >8 bit depth, this is not of much use to all of us using
Photoshop etc.
FYI - There is a tech paper on the LCD2180WG-LED that explains some of the
issues with color bit depths as related to the increased gamut size of the
LED display, and why it is not quite such an issue as one individual has
suggested it to be. Certainly none of the color professionals worldwide who
have been involved with the display throughout it's development have raised
it as being a concern.
http://www.necdisplay.com/products/LCD2180WGLED_Techpaper.htm
Will Hollingworth
Manager of OEM Product Design & Development Engineering
NEC Display Solutions of America, Inc.
http://www.necdisplay.com
At 09:52 AM 1/7/2006 -0800, email@hidden wrote:
Says that the board uses a 10 bit Digital to Analog (DAC) circuitry. Not the
same thing as having 10bit video RAM frame buffer.
This is an excerpt from page 2 of that PDF:
> Ultrasharp Display Output Technology
> Matrox offers the industry¹s highest-quality analog, digital and TV
> output through 10-bit DACs and an advanced board design for
> exceptional image quality.
This is not to say that Matrox, like ATI and the other video board makers,
is not busy engineering 10-bits video RAM boards. But I don't have any
information to that effect.
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