>Thanks for all the advise.  I am not planning to make any money off this
>project.  I just did it for fun in my spare time.  I think I'll just write
>to Dolby and ask how they would feel about it.  I cannot call my project
>Dolby Pro-Logic for the reason that the Dolby Pro-Logic name is owned by
>dolby and the software I wrote does not meet the entire spec.  I don't
>have the time or money for lawyers, so I might have to blow off the whole
>deal if Dolby even whinces.


There are all kinds of black boxes out there that do (in essence) surround
sound decoding similar to Pro-Logic.  Even the hobbyist electronics
magazines publish such projects.  None of these, I'm sure, are licensed.
Of course, none claim to be Pro-Logic compatible, either.

Legally, I'm no guru (along with the others here), but realistically, I'm
sure Dolby has better things to do than waste money going after you.
(IMHO)  I'd just make sure to avoid using the words Pro-Logic in
association with your product that go any further than "achieves sonic
performance similar to Dolby Pro-Logic..." and be sure to credit the
trademark.

$0.02, please

-Matt


  "DOS Computers manufactured by companies such as IBM, Compaq, Tandy, and
millions of others are by far the most popular, with about 70 million
machines in use wordwide. Macintosh fans, on the other hand, may note that
cockroaches are far more numerous than humans, and that numbers alone do
not denote a higher life form."