Optical disc authentication and data storage

Details Optical disc authentication and data storage Optical disc authentication and data storage

G - Physics

06

K

G06K 19/06 (2006.01)

Patent

CA 2311764

A compact data storage device (12) having the approximate dimensions of a credit card that is capable of storing large amounts of data (e.g., 50-100 Megabytes). Moreover, the device (12) may encode data in both a linear magnetic stripe fashion so that the data can be read by typical card swipe data reading devices (e.g., magnetic card swipe devices) as well as optical disc readers that typically read tracks of spirally encoded optical data (40). Additionally, a method for purposefully manufacturing defects into optical discs for authenticating the manufactured optical discs.

L'invention concerne un dispositif de mémorisation d'informations compact (12) dont les dimensions sont approximativement celles d'une carte de crédit. Ce dispositif est capable de mémoriser de grandes quantités d'informations (par exemple 50 à 100 mégaoctets), et peut coder des informations de manière rectiligne et magnétique (20), de sorte que ces informations peuvent être lues par un dispositif traditionnel de lecture d'informations par balayage (par exemple un dispositif de balayage de cartes magnétiques), et par des lecteurs de disque optique généralement conçus pour lire des pistes d'informations optiques codées en spirale (40). L'invention concerne également un procédé destiné à former volontairement des défauts sur des disques optiques, afin d'authentifier les disques optiques ainsi fabriqués.

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