Defect management in disc reproducing/rewriting system

Details Defect management in disc reproducing/rewriting system Defect management in disc reproducing/rewriting system

2005-07-25

2008-11-25

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

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

By medium defect indicative control signal

C369S053160

Reexamination Certificate

active

07457212

ABSTRACT:
A defect detector in a data disc system includes a defect estimation unit and a defect length counter. The defect detector inputs a RF signal from a pick-up unit for generating a defect signal. The defect length counter interprets the defect signal using a wobble signal and a header position (ESFS) signal to generate defect length information. A system controller determines which sector of the data disc has unacceptable defect from the defect length information to reassign such a sector to another available sector on the data disc.

REFERENCES:
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patent: 6151180 (2000-11-01), Bang
patent: 2006/0187800 (2006-08-01), Ogura
Korean Patent Application No. 1020020053813 to Lee et al, having Publication date of Mar. 11, 2004 (w/ English Abstract page).
Japanese Patent No. JP2003257020 to Kagawa et al., having Publication date of Sep. 12, 2003 (w/ English Abstract page).
Japanese Patent No. JP2004030852 to Iida et al., having Publication date of Jan. 29, 2004 (w/ English Abstract page).

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