Originally posted by: rnranimal
I can't tell you what the difference is within these formats, but one holds half what the other does and looks better on my player, so there is something going on there.
I can't tell you what the difference is within these formats, but one holds half what the other does and looks better on my player, so there is something going on there.
I don't think CLV 'holds half' what CAV does. I suspect they actually hold the same amount of signal information, just distributed differently. However, like I wrote before, I suspect purely mechanical considerations come into play. The laser spot size is finite for both kinds of discs, so it stands to reason if the data are further spread out (i.e. in CAV) then it will be easier to read accurately.
Imagine you're re-typing a block of text. If that block of text came in two versions, one on two pages, double-spaced, in a large readable font and the other on one page, single-spaced, in 8-point Arial Narrow, which do you think you'd have an easier time re-typing? Same information, different packaging. I don't know for a fact, but I strongly suspect that this is akin to how CAV and CLV differ.