[sdiy] Re: Doepfer A-105 looks like Oakley Multiladder?

[John Blacet]

An electronic circuit can ONLY be protected by patent; an expensive and
time consuming process.

Copyrighting a DRAWING of a circuit only protects the drawing and not
the circuit. Anyone can redraw the circuit and/or use the circuit
without legal consequence unless the circuit is protected by patent.

Companies getting inspired or actually just using the circuitry is a
very common occurence in all phases of the electronic industry (other
fields also). This is a good thing for the general quality of goods and
services we enjoy as consumers, but it makes life difficult for the
individual inventor.

Blacet Research does license certain types of circuitry from engineers
who have shown expertise and invention. These circuits are not usually
published on the internet. We do this to maintain working relationships
with these engineers and to acknowledge their work. Patents are
typically not involved.

If you have a novel idea, chances are it is not so novel. The current
discussion about bringing filter stages taps out  for recombining is
something that has been seen in the EM field for a long time. We used a
similar technique 20 years ago for the Phasefilter, for one example.
___________________
John Blacet
Blacet Research
http://www.blacet.com