Patent · US Active

Method and apparatus for determining if an optical disk originated from a valid source

US8098924B2 · kind B2 · utility

7Cited by

4References

6Claims

0Family size

Assignee

Fraudhalt Limited · IE

Inventors

Patrick J. Smith · Boulder, US
Phelim O'Doherty · Dublin, IE
Sean McCarthy · Dublin, IE

Key dates

Filing date	Apr 23, 2008
Grant date	Jan 17, 2012
Priority date	—
Expiry date	Sep 3, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/865
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for determining if an optical disk originated from a valid source, the method and apparatus scanning one major surface of the optical disk for imperfections, storing the locations of the imperfections relative to a datum, comparing a parameter of each of the locations of the imperfections with corresponding parameters of a master disk of known source for determining if the disk originated from the source from which the master disk originated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.