Jump to content

Data position measurement

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by 213.128.122.2 (talk) at 09:06, 25 October 2005. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

DPM - Data Position Measurement

New copy protection method that controls the exact position of data on a CD. Stamped CDs are perfect clones and have the data always at the same position, whereas writable media differ from each other.

A copy protection method that detects these little physical differences are able to protect duplicates very efficiently. To circumvent it a combination of CD image and virtual drive could help. In a special read mode, DPM mode, the exact locations of all data on the original disc are logged and used to create an image in the new Extend Media Descriptor Format (XMG).

Retrieved from "https://en.wikipedia.org/w/index.php?title=Data_position_measurement&oldid=26428561"