Full-CAV drives

What ever happened to the full-cav technology that yamaha used in their crw-f1 drive? Is that not the best technology for burning speeds? If a dvd burning drive were to have the full-cav technology would it have much faster burning speeds than the current z-clv and p-cav drives? What about the quality of the burns if done with full-cav, would they have a low pif rate?

BenQ uses only CAV/PCAV.

And PCAV 12x is faster than CAV 12x.

It depends on which speed a §CAV writing starts at and ends at. 6.0x to 15.8x would result in an average of under 12x. 8.0x to 17x would result in over 12x average. P-CAV starting at 5.0x and starting 16x at the last 100MB point continuing 16x till the end would result in an average of under 12x just like a slow CAV. P-CAV starting at 8.0x and starting 16x at the last 1000MB point continuing 16x till the end would result in over 13x average.

I don’t know how CAV or PCAV or ZCLV affects writing quality. Some Z-CLV 16x results very good. Actually, the two drives that use Z-CLV 16x are both very good. Some CAV 16x results are good. I can’t say about P-CAV 16x results yet, but P-CAV 12x results looked good from Plextor PX-712A.