公开(公告)号：US06732292B2

公开(公告)日：2004-05-04

申请号：US10090876

申请日：2002-03-04

申请人： Mark D. Hertz ,  Philip E. Cloud ,  Travis D. Fox ,  Edwin S. Olds

发明人： Mark D. Hertz ,  Philip E. Cloud ,  Travis D. Fox ,  Edwin S. Olds

IPC分类号： G06F1120

CPC分类号： G06F3/0659 ,  G06F3/0613 ,  G06F3/064 ,  G06F3/0676

摘要： Method and apparatus for transferring data between a host device and a data storage device having a first memory space and a second memory space. The host issues access commands to store and retrieve data. The device stores write data associated with write commands in the first memory space pending transfer to the second memory space. An interface circuit evaluates relative proximity of first and second sets of LBAs associated with pending first and second write commands, and forms an adaptive bi-directional write skip mask when the sets of LBAs fit within a predetermined mask interval. The mask is preferably slidably adjustable to encompass both sets of LBAs and is preferably expandable to accommodate additional sets of LBAs. The data within the mask are treated as a combined write command and are thereafter written in an order corresponding to an order in which the data appear in the mask.

摘要翻译： 用于在主机设备和具有第一存储器空间和第二存储器空间的数据存储设备之间传送数据的方法和装置。 主机发出访问命令来存储和检索数据。 该设备将与写命令相关联的写数据存储在第一存储器空间中，等待传送到第二存储器空间。 接口电路评估与待决的第一和第二写命令相关联的第一组和第二组LBA的相对接近度，并且当所述LBA组合在预定的屏蔽间隔内时，形成自适应双向写入跳过掩码。 掩模优选地可滑动地调节以包含两组LBA，并且优选地可扩展以容纳另外的一组LBA。 掩码内的数据被视为组合写入命令，然后以与数据出现在掩码中的顺序相对应的顺序写入。

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。