[Freetype] Re: [Render] Re: Arial ttf - bad rendering of some glyphs

[David Turner]

Hi Werner,

Werner LEMBERG a écrit :
> 
> > Because Windows uses a table embedded in the font, named "gasp", that
> > gives thresholds where anti-aliasing and smoothing should be toggled.
> >
> > Use of this table is patented by Mircrosoft, by the way !!
> > (but you can still use one that is outside the font without trouble).
> 
> Really?  Details, please.  BTW, it would be a good idea to mention
> this on the patents page...
>

Here's a link to the patent's description:

http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1='5,684,510'.WKU.&OS=PN/5,684,510&RS=PN/5,684,510

After review, it seems that it applies even if the "gasp" table isn't
stored in the font file. !! I need to dive in the claim details though
to be certain. I'm also confident that some of these contradict at least
two other patents so also cover so-called "gray-level processing of
grid fitted glyphs"..

Oh, oh, I wonder if this means new shit on the radar ???

Regards,

- David