Talk:SXGA

AFAIK the vast majority of SXGA LCD panels are 5:4 (certainly all the ones we have in our office, and the one I have at home are). The rectangular pixel thing was only a problem with CRTs and some early LCDs (which caused circles to appear elliptical.) Blorg 11:49, 15 Nov 2004 (UTC)

Native resolutions

17" LCD monitors have a native resolution that is 1024x768, which is XGA, not SXGA. 19" LCD's do have 1280x1024 as their native resolution which is SXGA. 70.111.218.254 22:40, 29 October 2006 (UTC)

That's not 100% accurate. 17" LCDs often are 1280x1024 too. 15" would probably be most 1024x768. --Swaaye 22:22, 30 October 2006 (UTC)

"Two page display" question

"Apple Computer referred to displays with this resolution as "two-page displays", because they could be used to display two A4 pages side-by-side at a resolution of 72 dots per inch. Sony manufactured a 17" CRT monitor with a 5:4 aspect ratio designed for this resolution. It was sold under the Apple brand name."

According to ISO 216 A4 is 210x297mm and has an aspect ratio of 1/√2 so two A4 pages would be 420x297mm and have an aspect ratio of 2/√2 = √2 = 1.4 rather than the 5:4=1.25 of SXGA. To test this yourself, hold up a piece of A4 paper to a 17in monitor and note that it takes up more than half the screen. Did I do my math incorrectly, or is the "two page display" a rumor? Sameerpadala 05:38, 14 November 2006 (UTC)

Your Math is correct as far as i checked, but an SXGA-Display at about 72 Dots per Inch (i.e. a Pointsize of ca. 353 µm) provides an Area of about 451 mm × 361 mm, if my Math is correct too. That should be enough for those two Pages and still leave plenty of Room for Menus etc. (and it should also work for US-Letter). Christoph Päper 11:56, 14 November 2006 (UTC)

memory calculation missing part

The calculation used to calculate the memory misses a segment.
Since it assumes an 8-bit color depth one must also calculate the memory used by the palette:
(2^8)*(Bits per primairy color*3).
While this flaw may be minor it could potentially make the assumption regarding availability of the RAM chips required unfounded. 77.60.168.163 21:22, 4 September 2007 (UTC)

In the primitive color-rendition technology of the day, 8 bits = several bits for each channel, leaving very little room for actual colors. It's already included. Sagittarian Milky Way 01:27, 14 November 2007 (UTC)

ISTR that the video chipsets (actually the DAC) used an internal look up table to contain the palette for 16/256 colour modes, it was not stored in main video memory. I'll have a look around and see if I can find a reference. 88.104.215.84 (talk) 16:57, 14 April 2008 (UTC)