Invention Grant
US08902533B1 Disk drive detecting different asperities on a disk using different sensor bias settings
有权
磁盘驱动器使用不同的传感器偏置设置来检测磁盘上的不同粗糙度
- Patent Title: Disk drive detecting different asperities on a disk using different sensor bias settings
- Patent Title (中): 磁盘驱动器使用不同的传感器偏置设置来检测磁盘上的不同粗糙度
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Application No.: US14015748Application Date: 2013-08-30
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Publication No.: US08902533B1Publication Date: 2014-12-02
- Inventor: Carl E. Barlow , Chun Sei Tsai , Chirag C. Patel , Boon Sien Chew , Thomas A. O'Dell , David E. Wachenschwanz , David E. Fowler
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B5/02
- IPC: G11B5/02 ; G11B21/02
Abstract:
A disk drive is disclosed comprising a disk comprising a plurality of data tracks, and a head actuated over the disk, the head comprising an asperity sensor operable to generate a sensor signal having a magnitude based on a bias setting of the asperity sensor. The asperity sensor is configured with a first bias setting and a first asperity on the disk is detected based on the sensor signal generated at the first bias setting. The asperity sensor is configured with a second bias setting different from the first bias setting and a second asperity on the disk is detected based on the sensor signal generated at the second bias setting.
Information query
IPC分类:
