公开(公告)号：US4907108A

公开(公告)日：1990-03-06

申请号：US247147

申请日：1988-09-21

申请人： Yasuhiro Masuyama

发明人： Yasuhiro Masuyama

IPC分类号： G11B5/55 ,  G11B21/08

CPC分类号： G11B5/5547 ,  G11B21/083

摘要： A head drive motor operating circuit comprises a first delay circuit for generating a first pulse of duration T1 in response to an end-of-seek pulse which is generated by a control circuit. A second delay circuit is provided for generating a second pulse of duration T2 in response to the seek command input pulse if it occurs in the presence of the first pulse and for generating a seek command output pulse for application to the motor and at the end of the second pulse or in response to the seek command input pulse if it occurs in the absence of the first pulse. A seek inhibit signal is generated during an interval between the seek command output pulse and a subsequent end-of-seek pulse and applied to the control circuit to prevent it from initiating the next seek. If a seek command input pulse is generated immediately following an end-of-seek pulse, a delay time of at least T2 is therefore introduced to the application of a seek command output pulse to the motor, reducing the amount of currents to be supplied to the motor for a given interval of time.

摘要翻译： 头驱动马达操作电路包括第一延迟电路，用于响应于由控制电路产生的寻求结束搜索脉冲，产生持续时间T1的第一脉冲。 第二延迟电路被提供用于响应于寻道命令输入脉冲产生持续时间T2的第二脉冲，如果它在存在第一脉冲时发生，并且用于产生用于施加到电动机的寻道指令输出脉冲 第二脉冲或者如果在不存在第一脉冲时发生，则响应于寻道指令输入脉冲。 在搜索命令输出脉冲和随后的搜索结果搜索脉冲之间的间隔期间产生寻道禁止信号，并且将其施加到控制电路以防止其启动下一个寻道。 如果在寻求结束搜索脉冲之后立即产生寻道指令输入脉冲，则至少T2的延迟时间被引入到向马达施加寻道指令输出脉冲，从而减少提供给 电机给定的时间间隔。

公开(公告)号：US06397347B1

公开(公告)日：2002-05-28

申请号：US09258126

申请日：1999-02-26

申请人： Yasuhiro Masuyama ,  Masanobu Akagi ,  Fumio Ichikawa

发明人： Yasuhiro Masuyama ,  Masanobu Akagi ,  Fumio Ichikawa

IPC分类号： G06F1100

CPC分类号： G06F11/1084

摘要： In a disk array apparatus which includes disk units so as to have a redundancy and which carries out, in response to a data writing instruction or a data reading instruction from a host computer, a data writing operation or a data reading operation between the disk units and the host computer, detector/memory section (211) detects, as a faulty unit, one of the disk units in which an abnormality occurs on any one of the data writing operation and the data reading operation. A disconnection managing section (212a) temporarily disconnects the faulty unit as a temporarily disconnected unit to make the disk array apparatus operate in a temporary degenerate mode. An instruction-execution controlling section (212) forces the disk units except the temporarily disconnected unit to execute the data writing operation or the reading operation between the disk units except the temporarily disconnected unit and the host computer by the use of the redundancy when the disk array apparatus receives, during the temporary degenerate mode, the data writing instruction or the data reading instruction from the host computer. A retry section (212c) carries out retry for the temporarily disconnected unit in parallel to the data writing operation or the data reading operation executed between the disk units except the temporarily disconnected unit and the host computer.

摘要翻译： 在包括磁盘单元以具有冗余性并且响应于来自主计算机的数据写入指令或数据读取指令执行数据写入操作或磁盘单元之间的数据读取操作的磁盘阵列装置 并且主机，检测器/存储器部分（211）在数据写入操作和数据读取操作中的任何一个上检测到其中一个盘单元作为故障单元发生异常。 断线管理部（212a）暂时断开故障单元作为暂时断开的单元，使得磁盘阵列装置以暂时退化模式工作。 指令执行控制部（212）强制除临时断开的单元之外的盘单元通过使用冗余来执行数据写入操作或除临时断开的单元之外的盘单元与主计算机之间的读取操作 在暂时退化模式期间，数据装置从主计算机接收数据写入指令或数据读取指令。 重试部分（212c）对与临时断开的单元和主计算机之间的盘单元之间执行的数据写入操作或数据读取操作并行执行暂时断开的单元的重试。