发明名称 |
Disk drive apparatus and read error recovery method in a disk drive apparatus |
摘要 |
A disk drive apparatus and read error recovery method in a disk drive apparatus removes thermal asperities on disk surfaces. A projection, such as a thermal asperity, on the recording surfaces of disks is detected when a signal transducer contacts the projection. The flying height of the signal transducer is lowered, e.g., by reducing the disk rotation speed from the normal rotation speed in read/write operations, while the signal transducer is positioned over the detected projection on the track. The signal transducer strikes the projection to break the projection. This avoids a subsequent error from being caused by the thermal asperity.
|
申请公布号 |
US5696643(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19960632787 |
申请日期 |
1996.04.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
TSUWAKO, KAZUSHI;HARAKO, FUJIO;SUDA, KATSUMI;NAKAJIMA, MICHIO;YONEDA, ISAO;OGASAWARA, KENJI |
分类号 |
G11B5/60;G11B19/04;G11B19/20;G11B23/50;(IPC1-7):G11B15/46 |
主分类号 |
G11B5/60 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|