rickman wrote in :

I don't know what logis is, but I would say you *are* being paranoid.
How long ago did Yamaha stop selling the DX7 or any product that might
contain similar technology? If you are using patented technology or
otherwise are infringing the rights of others, then I can't help you.


Ok, I admit paranoia, it's something I have trouble with sometimes, but even
so I'd rather play it safe purely because ignorance is a poor defence in law,
criminal or civil.

I won't be infinging any rights I know of, all my code is a derivation I made
myself by experiment, originally founded on Yamaha's expired patents. I've
asked Yamaha about what I am allowed to do with referencing their trademark
DX7. They may still regard that as a strict trademark, I have no way to know
till I get their reply.

The main issue is that other people have used a similar basis for their own
work, and if they think my methods appear to do as they did, there is nothing
stopping them launching a legal claim as the first way I'll even know they
care. It seems wise to try to reduce that risk. The best way is to pay for a
patent myself, openign the code to public domain but protecting right to sell
for several years, but I won't do that unless some potential threat looks
like being even more expensive. Ideally a patent should be issued for each
nation a product is exported and sold to. Expensive, for sure! I'm not sure
how if at all software donloading complicates the picture, but it seems much
safer legally to leave it so third parties have to IMport by their own
action and choice, that leaves me legally stronger, probably.