Optical disk apparatus for performing power control

Details Optical disk apparatus for performing power control Optical disk apparatus for performing power control

2006-11-17

2011-12-20

Agustin, Peter Vincent (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

Reexamination Certificate

active

08081546

ABSTRACT:
An optical disk apparatus for performing ROPC. A controller of the optical disk apparatus detects the quantity of reflected light Bo acquired when OPC is performed to set initial recording power Po; computes recording power P such that Bo/Pon=B/Pnis achieved in relation to the quantity of reflected light B acquired during recording of data; and computes next recording power Pr by use of a coefficient α by means of Pr=(1−α)·Pc+α·P in relation to current recording power Pc, to thus control recording power. The coefficient α is set to 0<α<1, thereby suppressing fluctuations and divergence of recording power. The coefficient α is dynamically set according to a parameter “n.”

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Notice of Grounds for Rejection, mailed Oct. 27, 2009, issued in corresponding Japanese Patent Application Serial No. 2006-001653, filed Jan. 6, 2006.
Office Action relating to Japanese Patent Application No. 2006-001653, mailed Feb. 2, 2010, 2 pages.
English language translation of Office Action relating to Japanese Patent Application No. 2006-001653, mailed Feb. 2, 2010, 1 page.

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