Method and apparatus for retry calculation in an optical...

Details Method and apparatus for retry calculation in an optical... Method and apparatus for retry calculation in an optical...

2007-09-04

2007-09-04

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053150, C714S769000

Reexamination Certificate

active

10772402

ABSTRACT:
A method for determining a maximum number of attempted retry operations when a read error occurs in an optical disk device. The method includes the steps of receiving an RF signal from a pickup of the optical disk device, detecting an envelope of the RF signal, asserting a defect signal when a level of the envelope is lower than a predetermined threshold, generating interrupt pulses during the assertion of the defect signal, and determining the maximum number of attempted retry operations using the interrupt pulses.

REFERENCES:
patent: 6378103 (2002-04-01), Han
patent: 6490236 (2002-12-01), Fukuda et al.
patent: 7149167 (2006-12-01), Hayashi et al.

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