Optical disk drive for adjusting power of a recording laser

Details Optical disk drive for adjusting power of a recording laser Optical disk drive for adjusting power of a recording laser

2011-06-07

2011-06-07

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S053270

Reexamination Certificate

active

07957239

ABSTRACT:
In an optical disk drive, running OPC (ROPC) is performed without fail, to thus enhance recording quality. ROPC is performed by use of a remaining portion of an area for APC operation within an APC area of a recording unit (RUB) in a next-generation optical disk such as a blu-ray disk. ROPC is performed by means of tentatively writing test data having a length of 50 T longer than a specified length of data to be recorded; and detecting level B of the amount of light reflected at that time. The APC area is formed from five wobble periods. APC is performed in periods of first two wobbles, and ROPC is performed in remaining three wobble periods.

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Machine Translation of Sasaki et al. (JP2002230769), Publication date: Aug. 16, 2002.
Notice of Grounds for Rejection mailed Nov. 10, 2009, issued in corresponding Japanese Application No. 2006-062998, filed Mar. 8, 2006.
Notice of Grounds for Rejection mailed Dec. 8, 2009, issued in corresponding Japanese Application No. 2006-063002, filed Mar. 8, 2006.

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