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Talk:Luby transform code

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This is an old revision of this page, as edited by 137.215.9.20 (talk) at 08:26, 8 May 2007 (Patent issues). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

This article doesn't make sense

I read this article three times, and I still can't really get the flavor of LT codes out of it. I think it needs a major rewrite.

From reading other literature, it appears that LT codes depend entirely on the Exclusive OR operation, or bitwise addition with no carry out of any bit position. I intend to rewrite the description of LT codes to make this clear to a typical Wiki reader. Probably tomorrow. DavidCBryant 00:44, 26 February 2007 (UTC)[reply]

Patent issues

M. Luby. Information additive code generator and decoder for communication system. U.S. Patent #6,373,406. Issued April 16, 2002. (continuntion to #6,307,487).

This patent seems to describe LT codes. Digital Fountain now have the patent rights for the aforementioned patent. Digital Fountain also have a patent on Raptor codes. Raptor codes use LT codes after encoding with a systematic code, such as Hamming or LDPC codes. For patent infringement to occur, all claims listed in the patent must be replicated in a commercial service or product. Does anyone want to correct these statements?

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