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    • 5. 发明授权
    • Disk drive device and a method for controlling the same
    • 磁盘驱动装置及其控制方法
    • US06289416B1
    • 2001-09-11
    • US09139933
    • 1998-08-26
    • Yukio FukushimaToshio KakiharaKazushige OkutsuTetsuo Ueda
    • Yukio FukushimaToshio KakiharaKazushige OkutsuTetsuo Ueda
    • G06F1208
    • G06F3/0607G06F3/0659G06F3/0676G06F12/0866
    • The present invention provides a disk drive device containing a cache memory having K queue entries (K is an integer) to operate in a write cache mode and a method for controlling the disk drive device. The number of the queue entries to be used in the write cache mode can be gradually decreased from the number K to a decreased number by a predetermined number, and the number of the queue entries to be used in the write cache mode can be gradually increased from the decreased number towards the number K by a predetermined number, in response to values of parameters, such as an error rate and Non Repeatable Run Out or Repeatable Run Out of the rotating data recording disk at writing of data from the cache memory to a rotating data recording disk.
    • 本发明提供了一种包含具有以写入高速缓存模式操作的K个队列条目(K为整数)的高速缓冲存储器的磁盘驱动器装置以及用于控制磁盘驱动器件的方法。 在写入高速缓存模式中要使用的队列条目的数量可以从数量K逐渐减少到减少的数量预定的数量,并且可以逐渐增加在写入高速缓存模式中使用的队列条目的数量 响应于数据从高速缓冲存储器写入到旋转数据记录盘的参数值,例如错误率和不可重复运行或可重复运行的数据从数量减少预定数量 旋转数据记录盘。
    • 7. 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。