Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2006-07-04
2006-07-04
Young, Wayne (Department: 2627)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S053000, C714S719000
Reexamination Certificate
active
07072129
ABSTRACT:
A method for identifying defective data sectors in a disk drive comprising generating a test pattern on a portion of a disk surface; reading the test pattern on the portion to detect an error and if an error is detected: associating the error with a physical location on the portion to identify a defective area unsuitable for user data; and assigning a severity category to the defective area. The method further comprises providing a physical defect list (P-list) for listing each defective area, the P-list having a predetermined limit to restrict a number of P-list entries; and posting the defective areas having a first severity category to the P-list and if the P-list limit is not exceeded by the first severity category entries: posting defective areas having a second severity category to the P-list.
REFERENCES:
patent: 6223303 (2001-04-01), Billings et al.
patent: 6327106 (2001-12-01), Rothberg
patent: 6408406 (2002-06-01), Parris
patent: 6600614 (2003-07-01), Lenny et al.
patent: 6625777 (2003-09-01), Levin et al.
patent: 6647517 (2003-11-01), Dickey et al.
patent: 6731442 (2004-05-01), Jin et al.
Cullen Michael J.
Messenger Carl R.
Evans, Esq. Jason T.
Fawcett, Esq. Robroy R.
Negrón Daniell L.
Western Digital Technologies Inc.
Young Wayne
LandOfFree
Identifying defective data sectors in a disk drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Identifying defective data sectors in a disk drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Identifying defective data sectors in a disk drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3551658