Method and apparatus for retry calculation in an optical disk device
US7266069B2 · kind B2 · utility
61Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Mar 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.