No just to get this straight:
CLV(Constant Linear Velocity): Writes at the same speed all the way. Like starts at 16X and writes at 16X the whole disc. Can’t be used for newer/faster writers.
Zone CLV: Starts at one speed, like 20X then jumps up to 24X after a while, then 32X, and then finally 40X at the end of the disc if it’s a 40X drive. Used in most writers nowadays.
CAV(Constant Angular Velocity): Starts writing at Let’s say 20X and Increasing the whole time and reaching 48X at the very end of the disc. No zones/jumps in speed. The rotation speed of the disc is constant giving a constant increase in speed from the beginning to the end. Future writers will most likely be like this.
Partial-CAV: Starts writing at one speed(maybe 16X) and increasing constantly until it reaches one point(maybe 24X), when this point is reached it will write at this speed(24X) the rest of the disc. Yamaha uses this technology in their writers.