L11 byte layout and definitions

[matthane]

Hi quietvoid, I was curious if you had already checked this patent. It includes the L11 byte layout (fig. 4A-4D), the white point table (fig. 8), and the content types + sub-types (fig. 7):
https://patentimages.storage.googleapis.com/bc/bc/b9/154447e495a376/US11743550.pdf

The content types seem to have been updated in the public Dolby docs after the patent was filed, but the white point table may still be the real one. I haven't found anything that counters it. It defines 0 as "Default" and codes 1-15 as 4500 + 500 x code (with D65 at code 4), instead of the linear Kelvin ramp in editor.md today. Or is there a reason you don't use it?

I was also wondering if fig. 4C might explain the byte2=8 from #381. It says bits 2-3 there are "noise reduction", which would decode as NR=2 on a phone capture.

Thanks!

[quietvoid]

See #251, that patent is not really useful.

[matthane]

Ahh ok, thanks.