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1. (WO2001006499) LASER DIODE CONTROL IN REWRITABLE OPTICAL RECORDING DEVICES

Pub. No.:    WO/2001/006499    International Application No.:    PCT/EP2000/006548
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Tue Jul 11 01:59:59 CEST 2000
IPC: G11B 7/0045
G11B 7/006
G11B 7/125
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V.
PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH
VAN DEN ENDEN, Gijsbert, J.
Inventors: VAN DEN ENDEN, Gijsbert, J.
Title: LASER DIODE CONTROL IN REWRITABLE OPTICAL RECORDING DEVICES
Abstract:
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.