[vorbis-dev] patents and separate entropy coding
xiphmont at xiph.org
Fri Dec 15 12:00:49 PST 2000
> Thing is, I understand that they have a patent on compressing audio by
> transforming to the frequency domain, quantising, and then entropy
> encoding, which is what Ogg Vorbis does, so there's trouble.
No. The patent (well, patents; there are several that read
approximately like this) is not anywhere as broad as you're saying.
Go read them all; there's a list linked from the LAME pages. Remember
that patent claims are like concentric circles, each further narrowing
the claims made before. You have to read *all* the claims.
Our IP attourneys say we're totally clear. Relax. Vorbis does not
infringe any patent we've looked at.
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