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    Application of reduced bias levels to disc drive read elements during periods of inactivity
    1.
    发明授权
    Application of reduced bias levels to disc drive read elements during periods of inactivity 有权
    在不活动期间将磁盘驱动器读取元件的偏置电平降低应用

    公开(公告)号：US06785083B2

    公开(公告)日：2004-08-31

    申请号：US10024863

    申请日：2001-12-18

    申请人： Brett A. Sloan ,  Christopher R. Fulkerson ,  Ronald L. Delamarter ,  Paul F. Kusbel ,  Karl L. Enarson ,  Philip E. Cloud

    发明人： Brett A. Sloan ,  Christopher R. Fulkerson ,  Ronald L. Delamarter ,  Paul F. Kusbel ,  Karl L. Enarson ,  Philip E. Cloud

    IPC分类号： G11B5596

    CPC分类号： G11B5/5521

    摘要： Apparatus and method for enhancing disc drive reliability by applying reduced read bias levels to read elements of a disc drive during an idle mode of operation. A preamplifier driver circuit applies an operational read bias signal of selected, nonzero magnitude to the read element to transduce data from a recording surface during an active mode. Once a predetermined period of inactivity occurs during which host data transfer commands are not processed, the disc drive enters the idle mode and the preamplifier reduces the read bias signal magnitude. The reduced bias level during the idle mode reduces thermal stress and electromigration within the read element while still allowing data to be transduced from the recording surface as the drive performs a dithering operation to move the head to different tracks on the recording surface.

    摘要翻译： 一种用于在空闲操作模式期间通过将读取偏置电平降低到读取磁盘驱动器的元件来增强磁盘驱动器可靠性的装置和方法。 前置放大器驱动器电路将所选择的非零幅度的操作读取偏置信号应用于读取元件，以在活动模式期间从记录表面转换数据。 一旦在主机数据传输命令未被处理的情况下发生预定的不活动时段，则盘驱动器进入空闲模式，并且前置放大器减小读偏置信号幅度。 在空闲模式期间减小的偏置电平降低了读取元件内的热应力和电迁移，同时仍然允许数据从记录表面转换，因为驱动器执行抖动操作以将磁头移动到记录表面上的不同轨道。