| 发明名称 |
MAGNETIC DISK MEDIUM, MAGNETIC DISK APPARATUS, AND ROTATION POSITION DETECTING METHOD OF MAGNETIC DISK MEDIUM |
| 摘要 |
PROBLEM TO BE SOLVED: To suppress overhead of information for specifying a rotation position of a magnetic disk medium and to shorten a rotation position detecting time. SOLUTION: A track is sectioned to blocks consisting of a plurality of continuous sectors. A position information bit string including a block number is arranged scatteringly one by one for each sector of each block as information indicating the rotation position. The position information bit column consists of combination of a position code including a block number and a discrimination code discriminating a start position of the position code. The block consists of 12 sectors, when the block number is made "b<SB>0</SB>b<SB>1</SB>b<SB>2</SB>b<SB>3</SB>b<SB>4</SB>b<SB>5</SB>", the discrimination code can be made "00001", the position information bit string is made "0000b<SB>0</SB>b<SB>1</SB>b<SB>2</SB>b<SB>3</SB>b<SB>4</SB>b<SB>5</SB>" as a whole. COPYRIGHT: (C)2006,JPO&NCIPI
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| 申请公布号 |
JP2006147096(A) |
申请公布日期 |
2006.06.08 |
| 申请号 |
JP20040338213 |
申请日期 |
2004.11.22 |
| 申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS BV |
发明人 |
KISAKA MASASHI;SHODA MASAHIRO |
| 分类号 |
G11B20/12;G11B20/10 |
主分类号 |
G11B20/12 |
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