Invention Grant
- Patent Title: Silent retract of heads in a hard disk drive
- Patent Title (中): 在硬盘驱动器中静音收回磁头
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Application No.: US12416621Application Date: 2009-04-01
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Publication No.: US08134805B2Publication Date: 2012-03-13
- Inventor: Bong Jin Lee
- Applicant: Bong Jin Lee
- Main IPC: G11B5/54
- IPC: G11B5/54

Abstract:
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.
Public/Granted literature
- US20100254045A1 SILENT RETRACT OF HEADS IN A HARD DISK DRIVE Public/Granted day:2010-10-07
Information query
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