Invention Grant
US08174785B2 Method and apparatus for detecting rapid off track following and protecting nearby tracks from rapid off track writing in a hard disk drive 失效
用于检测快速离开轨道的方法和装置,用于跟踪和保护附近的轨道,以便在硬盘驱动器中快速离线写入

Method and apparatus for detecting rapid off track following and protecting nearby tracks from rapid off track writing in a hard disk drive
Abstract:
This application discloses a hard disk drive using a self-resonant frequency band of a Voice Coil Motor far above its operational frequency band to predict Rapid Off Track events before its head stack assembly can deliver the disruption to the slider writing a track. A circuit board and/or an integrated circuit are disclosed in various embodiments to predict the ROT events using the self-resonant frequency band and/or to respond to the prediction to suppress the slider writing.
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