[vorbis-dev] patents and separate entropy coding

Segher Boessenkool segher at wanadoo.nl
Fri Dec 15 20:07:23 PST 2000

Davy Durham wrote:
> I have an idea....    Break the encoder into 2 'separate' projects.....
> One project (named 'O')  takes PCM audio and transforms it into the frequecy
> domain....  Great...
> The other project (name 'gg') takes frequecy domain *data* and performs entropy
> encoding on it... Great again....
> Noone will actually want to use each project separately (well, they might)....
> But the normal user will always use the two separate projects in succession.....
> And no one here is at fault for that....
> Problem solved: ;)


Anyone who wants to distribute/sell a complete encoder, will have to combine
both components, and thus will break the patent (unless it doesn't apply
for other reasons, of course).

You can (marginally) protect the Vorbis project this way, but not the goal
of the Vorbis project.



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