This is a little disingenuous. You know the patent doesn't cover the "gist" or any particular figure. It covers the claims (which you don't mention at all, even in passing). And for some reason, you don't even tell us what the patent number is so we can look at it for ourselves!
From a little googling, I suspect that we're talking about Pat. No. 6,775,356. But why hide the ball and characterize the patent as "not particularly innovative" when you could just let people see it for themselves?
https://docs.google.com/viewer?url=patentimages.storage.goog...