发明授权
US08896957B1 Disk drive performing spiral scan of disk surface to detect residual data
有权
磁盘驱动器执行磁盘表面的螺旋扫描以检测残留数据
- 专利标题： Disk drive performing spiral scan of disk surface to detect residual data
- 专利标题（中）： 磁盘驱动器执行磁盘表面的螺旋扫描以检测残留数据
-
申请号： US13922935申请日： 2013-06-20
-
公开(公告)号： US08896957B1公开(公告)日： 2014-11-25
- 发明人: Yap Han Ng , Charles A. Park , Songwut Jomthaisong , Siri S. Weerasooriya , Brian P. Rigney
- 申请人： Western Digital Technologies, Inc.
- 申请人地址： US CA Irvine
- 专利权人： Western Digital Technologies, Inc.
- 当前专利权人： Western Digital Technologies, Inc.
- 当前专利权人地址： US CA Irvine
- 主分类号： G11B5/03
- IPC分类号： G11B5/03 ; G11B21/02 ; G11B27/36 ; G11B5/024
摘要：
A disk drive is disclosed comprising a disk surface comprising a radius, a head operable to generate a read signal, and a voice coil motor (VCM) operable to actuate the head over the disk surface. A back electromotive force (BEMF) voltage generated by the VCM is measured. The VCM is controlled to move the head over substantially the entire radius of the disk surface in response to the BEMF voltage, and while moving the head the read signal from the head is processed to detect residual data recorded on the disk surface after erasing the disk surface.
信息查询
IPC分类:
