Optical disk recording and reproducing device

Details Optical disk recording and reproducing device Optical disk recording and reproducing device

2006-11-08

2010-11-16

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S047150, C369S053120, C369S053130, C369S053180

Reexamination Certificate

active

07835242

ABSTRACT:
A system controller of an optical disk recording and reproducing device makes a display portion display a precaution message for recommending a user to back up data recorded on the optical disk when it is determined that one or more values including a jitter value, a variation quantity of the jitter value, a block error rate and a block error rate at a particular position have exceeded precaution reference values. In addition, it makes a display portion display an urgent message for instructing a user to back up data recorded on the optical disk quickly when it is determined that one or more of the values have exceeded limit reference values.

REFERENCES:
patent: 6009537 (1999-12-01), Tanimoto et al.
patent: 6683737 (2004-01-01), Gong et al.
patent: 2003/0016462 (2003-01-01), Gong et al.
patent: 2003/0090590 (2003-05-01), Yoshizawa et al.
patent: 2005/0232103 (2005-10-01), Yoshida
patent: A-2005-025861 (2005-01-01), None
Machine Translation of JP publication No. 2005025861 on Jan. 27, 2005 by Suzuki Hiroshi.

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