Subject: [linux-audio-dev] [Fwd: Graphical dataflow programs violate patents]
From: Xavier Amatriain (xamat_AT_iua.upf.es)
Date: Tue Dec 14 2004 - 11:59:16 EET
-----Forwarded Message-----
> From: Xavier Amatriain <xamat_AT_iua.upf.es>
> To: iua-mtg_AT_iua.upf.es
> Subject: Graphical dataflow programs violate patents
> Date: Tue, 14 Dec 2004 10:57:56 +0100
>
> I read that National Circuits sued and won a case against Mathworks for
> their Simulink product infringing a number of paterns (September this
> year).
>
> According to a summary of the claims (which you can read here
> http://cafc.bna.com/03-1540.pdf): the dispute was about the term "data
> flow diagrams" (which are interpreted) as a graphical computer program
> whose execution follows a set of semantic or operational rules as
> follows:
>
> 1. The order of the operations is not completely specified by the user
> 2. The order of operations is implied by data interdependencies
> 3. a node may only execute after all its inputs have become available,
> and,
> 4. outputs are generated after a node completes execution
>
> It turns out that most graphical audio programs such as Max, Pd, OSW or
> CLAM's Network Editor may be infringing these patents. Luckily this is
> still not valid in Europe and we hope will never be.
>
> Read more about this story at:
>
> http://patentlaw.typepad.com/patent/2004/09/federal_circuit.html
> http://digital.ni.com/worldwide/bwcontent.nsf/web/all/03B9A7C68030C42D86256F08006499CD
> http://www.mathworks.com/company/pressroom/articles/article7951.html
> http://news.thomasnet.com/fullstory/16801
-- /********************************** ********* Xavier Amatriain ******** ****** Music Technology Group ***** ** IUA- Universitat Pompeu Fabra ** ****** www.iua.upf.es/~xamat ****** ***********************************/
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