Optical disk apparatus and method of controlling the optical...

Details Optical disk apparatus and method of controlling the optical... Optical disk apparatus and method of controlling the optical...

2007-09-04

2007-09-04

Korzuch, William (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053270, C369S059110

Reexamination Certificate

active

10940957

ABSTRACT:
A light emitting unit is caused to emit a laser beam having a pulse width T1broader than a pulse width T2used at a time of recording, and a light receiving unit is caused to receive the laser beam and to output a first detection signal. A first control signal V1is generated by comparing a value held at a peak level of the first detection signal with a target value of a quantity of the laser beam, and a second control signal V2is generated by comparing the first control detection signal with the target value of a quantity of the laser beam.

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patent: 2002-334440 (2002-11-01), None

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