Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Reexamination Certificate
2005-11-09
2009-11-03
Nguyen, Hoa T (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
C360S053000, C360S077020, C360S078040
Reexamination Certificate
active
07612960
ABSTRACT:
Embodiments of the present invention efficiently format long sectors, without decreasing the performance, in a magnetic disk drive in which servo sectors are radially formed at regular intervals, and make full use of the ECC performance that is enhanced by the long sectors. In one embodiment, a data format in each zone on a magnetic disk is completed by a plurality of tracks N (N is an integer, which is 2 or more). The storage capacity per track of the outermost radius zone Z#1is 150 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#1=3. The storage capacity per track of the innermost radius zone Z#m is 80 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#m=2.
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Ogawa Hitoshi
Satoh Naoki
Takashi Terumi
Tsuchinaga Hiroyuki
Hitachi Global Storage Technologies - Netherlands B.V.
Mercedes Dismery E
Nguyen Hoa T
Townsend and Townsend / and Crew LLP
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