The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2009
Filed:
Nov. 09, 2005
Naoki Satoh, Kanagawa, JP;
Terumi Takashi, Kanagawa, JP;
Hitoshi Ogawa, Kanagawa, JP;
Hiroyuki Tsuchinaga, Tokyo, JP;
Naoki Satoh, Kanagawa, JP;
Terumi Takashi, Kanagawa, JP;
Hitoshi Ogawa, Kanagawa, JP;
Hiroyuki Tsuchinaga, Tokyo, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
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#is 150 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#=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.