So uh compressed raw would be just like a regular (loss-less) compressed image format, then? I thought the distinction between raw and non-raw was the use of lossy compression formats like JPEG.
In Still cameras, it usually means pre-debayering.
On film cameras, it is a little more muddled but usually just means linear colourspace and higher bit depth.
JPEG is in perceptual (~log) light. Out of the tap, terrible.
It's also compressed.
There are lossless and lossy compressed RAW formats.