A couple of questions about how a minidisk player works.

[Guest Anonymous]

Any help is greatly appreciated

1). How fast (RPM?) does the disk of the minidisk spin when playing / recording and is there a difference?

2). How do the control parts of the player know when the disk is spinning at the correct speed?

thanks

-------------Deji

[Andy]

1) I think different units have different numbers, as for a ball park figure... I can't remember - but check the back of your manual (if you have an MD that is) - they usually list that type of thing.

2) The way the motor is controlled would probably allow for some control (eg by applying current in alternating directions at the RPM). From there, it can get a fairly ok idea of how fast it is going by just reading the pits and flats on the disc. Instead of putting straight binary on the disc, they use something called (or something similar to) EFM. Read about it here if you are interested:

http://www.cdrinfo.com/Sections/Articles/S...uality&index=10