发明授权
US08134805B2 Silent retract of heads in a hard disk drive 失效
在硬盘驱动器中静音收回磁头

  • 专利标题: Silent retract of heads in a hard disk drive
  • 专利标题(中): 在硬盘驱动器中静音收回磁头
  • 申请号: US12416621
    申请日: 2009-04-01
  • 公开(公告)号: US08134805B2
    公开(公告)日: 2012-03-13
  • 发明人: Bong Jin Lee
  • 申请人: Bong Jin Lee
  • 主分类号: G11B5/54
  • IPC分类号: G11B5/54
Silent retract of heads in a hard disk drive
摘要:
A hard disk drive with an actuator arm assembly that is coupled to a head and includes a voice coil motor. The drive also includes a drive circuit that provides a drive current to the voice coil motor to move the actuator arm assembly into contact with a magnet. The drive circuit limits an amplitude, and/or changes the pulse width, of the drive current as the actuator arm assembly approaches the magnet. Limiting the amplitude and/or changing the pulse widths reduces any audible noise associated with retracting the heads.
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