27 May
2005
27 May
'05
11:49 a.m.
Dwight K. Elvey wrote:
The problem with disk, of course, is the variable
BPI.
Today, with the electronics so cheap, the CD-ROM is made
with a spiral track and it runs at a constant BPI by
changing the rotation speed as it reads the disk.
Dwight
Which, of course, is a problem in itself in that most drives change the
spin rate and so seek times are awful.
Exercise for the student: implement a constant angular velocity drive to
read constant linear velocity media
--
Tim Riker - http://Rikers.org/ - TimR at Debian.org
Embedded Linux Technologist - http://eLinux.org/
BZFlag maintainer - http://BZFlag.org/ - for fun!