Ultraviolet activating system for preventing digital piracy...

Details Ultraviolet activating system for preventing digital piracy... Ultraviolet activating system for preventing digital piracy...

H - Electricity

04

B

H04B 1/20 (2006.01)

Patent

CA 2604237

An optical medium piracy method and system employing a ultraviolet-sensitive state- change material capable of changing state upon activation with a wavelength of ultraviolet between 253 +/- 25 nm to 365 +/- 25 nm, the state- change material in association with digital data indicia, wherein when the state-change material is activated to change state by the ultraviolet radiation, the optical medium moves from an unreadable to a readable condition, or from a less readable to more readable condition.

L'invention concerne un procédé et un système anti-piratage pour support optique faisant appel à un matériau à changement d'état sensible à l'ultraviolet pouvant changer d'état lors d'une activation avec une longueur d'onde d'ultraviolet comprise entre 253 +/- 25 nm et 365 +/- 25 nm, ce matériau à changement d'état étant associé à des indices de données numériques. Ledit matériau à changement d'état est activé en vue d'un changement d'état au moyen d'un rayonnement ultraviolet, le support optique passant alors d'un état non lisible à un état lisible, ou d'un état moins lisible à un état plus lisible.

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