| 摘要 |
Method for data recovery on a data carrier with overlapping data tracks and device thereof A defect management system for storage devices is disclosed, which may be used in connection with shingled magnetic recording (SMR). Overlapping data tracks, separated by guard regions, are written by a write element whose track width is at least twice as wide as the track width of a read element. Depending on the embodiment, data recovery of a defective track or sector is attained by evaluating the contents of an adjacent track or guard region: if the adjacent track or guard region encompasses equivalent data, due to the width of the write element, this data may be used as a complement or as a substitute for the defective track or sector. This may reduce the risk of data loss. The capacity of a storage device may be increased by balancing out the probability of read errors with the probability that an adjacent track may encompass equivalent data. Track Config. 3 20 22 14 21 # (u, v) _ 000 (0) (0,1) 0 1 defective -o 001 (1) (1,2) 0 0 904(.4) (4.3) 4 1 defective 005(0) (0,1) 0 1 S006(1) (1,2) 1 defective ||||| 009 (4) (4,3) 4 1 ||||||| defective ||||| 01 0 (0) (0,1) 0 1 -defective S 011(1) (1,2) 0 0 m 0-2(2) :::3 : 2 013 (3) (3,2) 3 1 |!!!!!!defective 990 (0) (0,1) 01 m < 992 (2) ---- --- 3 .-- .-- -- --- - _: 993 (3) (3,2) 3 1 ||| defective - 994 (4) (4,3) 4 1 ' defectivm |
