Laser diode control in rewritable optical recording devices

Details Laser diode control in rewritable optical recording devices Laser diode control in rewritable optical recording devices

G - Physics

11

B

G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/006 (2006.01) G11B 7/125 (2006.01)

Patent

CA 2344069

The invention relates to an electronic device for optically recording onto rewritable media in which two different states are produced on the medium according to information content. According to the invention, the reflection of only one of the states is measured when writing the states, and the measurement for controlling the power of the laser diode is used also when writing the other state.

L'invention concerne un appareil électronique pour réaliser un enregistrement optique sur des supports réinscriptibles, dans lesquels deux états différents sont produits sur le support en fonction du contenu de l'information. Selon l'invention, la réflexion de seulement un des états est mesurée lors de l'écriture des états, la mesure étant utilisée pour réguler la puissance de la diode laser même pendant l'écriture de l'autre état.

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