@foone Reminds me of when a lawyer accused me of stealing someone else's graphics tech because we both used the same technology of "bilinear filtering." OK my friend you go ahead and bring that up in court be my guest.

@TomF @foone IBM got a patent on some obscure graphics method I used many years before in demo programming around 1990.
I can't recall what it was. Maybe sprites masking with a CPU. Was something obvious

@gunstick @foone I vaguely recall someone like Atari having a patent on a register that shifts the entire screen left. So someone else (Sega?) made a register that shifts it right instead. It's really annoying that it goes the wrong way, but it avoided the patent.