Tech Support > Computer Hardware > Modems > DIS structure - higher resolution
DIS structure - higher resolution
Posted by Julia Donawald on October 24th, 2003


Hi,

I am currently writing a fax software. The problem is that at the moment, I
dont know how to change the resolution when receiving a fax. I mean with
that how I can tell the fax that it should send me ( and so it should scan
much more detailed ) the fax in a higher resolution. For that, do I have to
send a special DIS-structure from my modem to the fax? Or how is it possible
to set the other resolution?

Thanks in advance
Julia


Posted by Kerry on October 24th, 2003


The following bit numbers in the DIS report your resolution capabilities

15 - 200*200 pels/inch AND/OR 8*7.7 pels/mm (aka Fine)
41 - 8 * 15.4 pels/mm (aka Metric based Super Fine)
42 - 300 * 300 pels/inch (aka Inch based Super Fine)
43 - 400*400 pels/inch AND/OR 16 * 15.4 pels/mm (aka Ultra Fine)

If none of these are set, you only support 200*100 pels/inch AND/OR 8 * 3.85
pels/mm (aka Standard or Coarse)

BTW... I sometimes confuse my fax colleages by refering to the resolutions
using the following house paint terminology:

Flat - Standard
Eggshell - Fine
Satin - Metric based Super Fine
Semi Gloss - Inch based Super Fine
Gloss - Ultra fine

The bits that control metric and inch based resolutions are:

44 - Inch based
45 - Metric based


"Julia Donawald" <julia.donawald@gmx.de> wrote in message
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