Linked by Thom Holwerda on Tue 10th Apr 2007 18:53 UTC
SuSE, openSUSE As reported by Slashdot, debate has risen over ClearType in Linux. OpenSUSE recently disabled this technology, saying "that this feature is covered by several Microsoft patents and should not be activated in any default build of the library". Other websites have picked up on this as well: "The strange thing is though: no matter the fact that Novell and Microsoft are now buddies, openSUSE still has to be concerned about the ClearType patents!"
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News is wrong
by Ford Prefect on Tue 10th Apr 2007 19:59 UTC
Ford Prefect
Member since:
2006-01-16

All the talk about "ClearType" in SUSE is crap. We are talking about sub-pixel antialiasing in the Freetype implementation, _not_ in the Microsoft implementation (which is called ClearType).

If Microsoft holds patents on ClearType, one has first to check wether Freetype really violates these patents.

Reply Score: 5

RE: News is wrong
by andrewg on Tue 10th Apr 2007 20:41 in reply to "News is wrong"
andrewg Member since:
2005-07-06

Yes it seems it has been checked out by David Turner of Freetype. The code will now only be used if you activate it via macro for those in countries not affected by patents.

He says that he checked the patent and it appears to cover all sub-pixel cases and affects libXFT, Cairo and probably XRender used in X11 server. He checked for prior art and that Steve Gibson in incorrect. Apples Wozniak patent covers only used 2 sub-pixels. Microsoft has gone to pains to emphasize that it must be at least 3 sub-pixels in their patent.

Links below.

http://permalink.gmane.org/gmane.comp.fonts.freetype.user/1912
http://www.mail-archive.com/freetype@nongnu.org/msg00972.html

Reply Parent Score: 5

RE[2]: News is wrong
by dylansmrjones on Tue 10th Apr 2007 23:44 in reply to "RE: News is wrong"
dylansmrjones Member since:
2005-10-02

Oh yes. Using 3 sub-pixels instead of 2 is really innovative. Major break-through :p

Reply Parent Score: 5

RE[2]: News is wrong
by djame on Tue 10th Apr 2007 21:53 in reply to "News is wrong"
djame Member since:
2005-07-08

I thought it was a patent from apple ?
more importantly, freetype include this stuff since at least 3 years and since then, one had to modify a .h file to activate it.

So what's the buzz about ?

Reply Parent Score: 1