METHOD FOR ALLOCATING ALTERNATE SECTOR, METHOD FOR READING OUT DATA, DISK DRIVE ASSEMBLY AND DEVICE FOR READING OUT AND WRITING AV DATA

摘要

PROBLEM TO BE SOLVED: To prevent the deterioration in performance in reading the data in alternate sectors. SOLUTION: It is assumed that a write request of data (a) is made to a sector A, but since the sector A is a defective sector, the data is written into the alternate sector A' of an alternate sector region X. Next, when the write request for data (b) is made to a sector B, the alternate sector B' succeeding to the alternate sector A is subjected to reassignment. The defective sector C to which the write request for data (c) is made is similarly reassigned to the alternate sector C'. Accordingly, the continuous data (a), (b) and (c) are eventually written into the continuos sectors A', B' and C' within the same alternate sector X.