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    • 4. 发明授权
    • Disk drive having control mechanism to reduce or eliminate redundant write operations and the method thereof
    • 具有减少或消除冗余写入操作的控制机制的磁盘驱动器及其方法
    • US06219750B1
    • 2001-04-17
    • US09049682
    • 1998-03-27
    • Atshushi KanamaruToshio KakiharaHideo AsanoAtsushi Tobari
    • Atshushi KanamaruToshio KakiharaHideo AsanoAtsushi Tobari
    • G06F1208
    • G06F3/0616G06F3/0659G06F3/0677G06F12/0866G06F2212/312
    • A disk drive and a control method thereof to reduce the number of write operations to a medium while minimizing command overhead time. A disk drive 10 comprises a hard disk controller (HDC) 13, a cache memory 14, and a host interface controller (HIC) 15 with a command queue for retaining a plurality of commands which are cached in cache memory 14. The HIC 15 performs the periphery interface processing by hardware. The disk drive 10 further comprises a local microprocessor unit (MPU) 16 for controlling the overall operation of HDD 10, including operations of HDC 13 and HIC 15. The local MPU 16 instructs the HIC 15 to write data to a medium by write commands cached in the cache memory 14. When local MPU 16 retrieves a command from a plurality of write commands cached in cache memory 14 which is completely overwritten by a command more recently issued, a write operation to the medium is not performed by the retrieved command.
    • 一种磁盘驱动器及其控制方法,用于在将命令开销时间最小化的同时减少对介质的写入操作的数量。 磁盘驱动器10包括硬盘控制器(HDC)13,高速缓存存储器14和主机接口控制器(HIC)15,其具有用于保存缓存在高速缓存存储器14中的多个命令的命令队列.HIC 15执行 外围接口由硬件处理。 磁盘驱动器10还包括用于控制HDD10的整体操作的本地微处理器单元(MPU)16,包括HDC 13和HIC 15的操作。本地MPU 16指令HIC 15通过缓存的写命令将数据写入介质 在本地MPU16从缓存在高速缓冲存储器14中的多个写入命令中检索出被最近发出的命令完全覆盖的写入命令的命令时,不会通过检索到的命令来执行对介质的写入操作。
    • 7. 发明授权
    • Data storage unit and method for starting data storage unit
    • 用于启动数据存储单元的数据存储单元和方法
    • US06721844B1
    • 2004-04-13
    • US09114584
    • 1998-07-13
    • Kazushige OkutsuTetsuo UedaYukio FukushimaToshio Kakihara
    • Kazushige OkutsuTetsuo UedaYukio FukushimaToshio Kakihara
    • G06F1200
    • G11B19/20G11B19/2054
    • To provide a method of starting a data storage unit which allows a computer system to be used as early as possible. The present invention relates to a method for starting up a computer system having a data storage unit equipped with an actuator arm which supports a flexible cable. The method allows a command from the host computer to be processed before generation of corrected tension data for the flexible cable. The method includes the steps of turning on power; executing a start operation, excluding generation of corrected tension data of the flexible cable; causing an access command from a host computer to be in an executable state, following the step of executing a start operation; and executing generation of corrected tension data of the flexible cable, following the step of causing an access command from a host computer to be in an executable state.
    • 提供启动能够尽可能早地使用计算机系统的数据存储单元的方法。 本发明涉及一种用于启动具有数据存储单元的计算机系统的方法,所述数据存储单元配备有支撑柔性电缆的致动器臂。 该方法允许在生成用于柔性电缆的校正张力数据之前处理来自主计算机的命令。 该方法包括打开电源的步骤; 执行开始操作,不包括产生柔性电缆的校正张力数据; 在执行开始操作的步骤之后,使来自主计算机的访问命令处于可执行状态; 以及执行所述柔性电缆的校正张力数据的产生,其中所述步骤是使来自主计算机的访问命令处于可执行状态。
    • 8. 发明授权
    • Disk device, track positioning method and method for generating a position error signal
    • 磁盘设备,轨道定位方法和产生位置误差信号的方法
    • US06476997B2
    • 2002-11-05
    • US09120906
    • 1998-07-22
    • Yukio FukushimaTetsuo UedaToshio KakiharaHideo Asano
    • Yukio FukushimaTetsuo UedaToshio KakiharaHideo Asano
    • G11B5596
    • G11B5/59627
    • A disk device, track positioning method, and method for generating a position error signal in which the occurrence of a wrong correction operation can be prevented by creating an appropriate PES without using a burst pattern having a defect, and reassign sectors can be decreased by decreasing defective sectors thereby to reduce the performance degradation is disclosed. In the disk device and track positioning method, the defect of a burst pattern read out from a disk is detected, and if a defect is detected in the burst pattern, a data value corresponding to the sum data of the burst pattern pair having the defect detected is obtained by measuring the maximum amplitude value of the burst pattern pairing with the burst pattern having the defect detected, and a PES is created according to the amplitude of the burst pattern having the defect detected and the maximum amplitude value.
    • 一种磁盘装置,轨道定位方法以及用于产生位置误差信号的方法,其中可以通过在不使用具有缺陷的脉冲串模式的情况下创建适当的PES来防止出现错误的校正操作,并且可以通过减少重新分配扇区来减少重新分配扇区 缺陷扇区,从而降低性能下降。 在盘装置和轨迹定位方法中,检测从盘读出的脉冲串模式的缺陷,并且如果在脉冲串模式中检测到缺陷,则与具有缺陷的脉冲串模式对的和数据相对应的数据值 通过测量与检测到缺陷的脉冲串模式匹配的脉冲串模式的最大幅度值,并且根据具有检测到的缺陷的脉冲串模式的幅度和最大振幅值来创建PES来获得检测到的。
    • 9. 发明授权
    • Disk drive device and method for controlling the same
    • 磁盘驱动装置及其控制方法
    • US6041392A
    • 2000-03-21
    • US49680
    • 1998-03-27
    • Atsushi KanamaruToshio KakiharaYuhji KigamiTakahiro Saitoh
    • Atsushi KanamaruToshio KakiharaYuhji KigamiTakahiro Saitoh
    • G06F3/06G06F12/08
    • G06F12/0866
    • A disk drive and a method for controlling the disk drive in which an additional read from a medium can be performed as needed while minimizing the command overhead to the minimum. In a disk drive device 10, even if a read command is issued, and all the required data is stored in the cache memory such that the data transfer can be performed without the intervention of a local MPU 16, a HIC 15 performs the data transfer so as to leave the last one block and waits for the intervention of the local MPU 16. The local MPU 16 provides instructions to transfer the last one block when the preparation for the command termination is completed, and if a plurality of blocks of data to be transferred are remaining when the local MPU 16 instructs the HIC 15 to transfer the last one block, the HIC 15 executes all the data transfer without stopping the data transfer before the last one block, completing the command.
    • 一种磁盘驱动器和一种用于控制磁盘驱动器的方法,其中可以根据需要执行从介质的附加读取,同时使命令开销最小化至最小。 在磁盘驱动装置10中,即使发出了读取命令,并且将所有需要的数据存储在高速缓冲存储器中,使得可以在不用本地MPU 16的介入的情况下执行数据传送,HIC15执行数据传送 以便离开最后一个块并等待本地MPU 16的干预。当完成命令终止的准备时,本地MPU 16提供传送最后一个块的指令,并且如果多个数据块到 当本地MPU16指示HIC 15传送最后一个块时,HIC 15执行所有数据传输,而不停止在最后一个块之前的数据传输,完成该命令。