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Re: [Devel] Apple Licenses Question

From: David Turner
Subject: Re: [Devel] Apple Licenses Question
Date: Mon, 03 Sep 2001 18:26:55 +0200


> There are basically two patents:
> - the other targets the broader part, that is the concept of
> projection vector (which almost any practical use of TrueType for
> hinting use).

I shall add that what is really covered by the patent is the
case where the "freedom" and "projection" vectors are not in
the same direction during "move" instructions..

In 95% cases, they're in the same direction, and there is just
tons of prior art for these operations. However, as soon as you
start hinting diagonals, you need the patented behaviour.

This explains the glyphs displayed in "patents.html" (those with
no diagonals don't seem to suffer much from the "change"..)


- David

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