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Forgent's JPEG Patent

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How are you gentlemen?  All your JPEG are belong to us

Here is some background information on Forgent's patent no. 4,698,672, October 6, 1987 (filed October 27, 1986), "Coding system for reducing redundancy". Forgent claims that JPEG codecs infringe on their patent, and they have recently begun enforcing their claim.

The JPEG committee is coordinating the effort to collect prior art; it's not my intention to compete with that effort, and I will forward anything submitted here to them. Prior art, to be most useful, should consist of published reports appearing earlier than October 27, 1985.