Optical recording/reproducing apparatus

Details Optical recording/reproducing apparatus Optical recording/reproducing apparatus

2008-03-18

2008-03-18

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053240, C369S047530

Reexamination Certificate

active

07345974

ABSTRACT:
An object of the present invention is to provide an optical recording/reproducing apparatus capable of improving medium usability through a laser power adjusting process while keeping compatibility with a read only type medium. The optical recording/reproducing apparatus adjusts laser power using a PCA till the PCA is used up. After the PCA is used up, an additional area is reserved at the outermost circumference position, thereafter when the additional area is used up, a new additional area is reserved at an inner circumference side of the used up additional area to adjust laser power. The additional area is reserved at an outer circumference than a lead-out area, and therefore format compatibility with a read only type optical disc can be maintained. The additional area is reserved only when the PCA is used up, thus capacity compatibility with a read only type optical disc can be maintained while laser power is adjusted with only the PCA.

REFERENCES:
patent: 6937548 (2005-08-01), Hsiao et al.
patent: 7206268 (2007-04-01), Gotoh et al.
patent: 2001-236739 (2001-08-01), None
patent: 2002-175624 (2002-06-01), None
patent: 2001-0082641 (2001-08-01), None
patent: 2003-0008537 (2003-01-01), None
Chinese Office Action issued in corresponding Chinese Patent Application No. CN 200410090358.4, dated Feb. 10, 2006.
Chinese Office Action issued in corresponding Chinese Patent Application No. CN 200410090358.4, dated Jul. 28, 2006.

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