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1. 发明申请

US20090019216A1 Disk drive device and method for saving a table for managing data in non-volatile semiconductor memory in disk drive device 审中-公开
标题翻译：磁盘驱动装置和方法，用于在磁盘驱动装置中保存用于管理非易失性半导体存储器中的数据的表格
公开(公告)号：US20090019216A1
公开(公告)日：2009-01-15
申请号：US12218577
申请日：2008-07-15
申请人： Shuhji Yamada , Toshio Kakihara , Tsuyoshi Satoh , Tsuneo Hirose , Kazuhiko Satake , Katsuhiro Imoto , Akihiko Mouri , Shunsuke Kagaya , Shingo Ito
发明人： Shuhji Yamada , Toshio Kakihara , Tsuyoshi Satoh , Tsuneo Hirose , Kazuhiko Satake , Katsuhiro Imoto , Akihiko Mouri , Shunsuke Kagaya , Shingo Ito
IPC分类号： G06F12/00 , G06F12/02
CPC分类号： G06F3/0656 , G06F3/061 , G06F3/0625 , G06F3/0674 , Y02D10/154
摘要： Embodiments of the present invention help to suppress adverse effects on the host computer operation caused by saving a segment table. According to one embodiment, a hard disk drive (HDD) creates a segment table to associate addresses of user data in a flash memory with LBAs in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates a journal indicating an update of the segment table and saves it to the flash memory. The segment table and the journal in the flash memory enable the latest segment table to be restored. If the HDD receives a predetermined command from a host computer, it saves the segment table in the DRAM into the flash memory.
摘要翻译：本发明的实施例有助于抑制由保存分段表导致的对主计算机操作的不利影响。根据一个实施例，硬盘驱动器（HDD）创建段表以将快闪存储器中的用户数据的地址与磁盘中的LBA相关联。 HDD更新DRAM中的段表，并在特定时间将其保存到闪存。 HDD创建一个日志，指示段表的更新，并将其保存到闪存。闪存中的分段表和日志使能最新的分段表进行恢复。如果HDD从主计算机接收到预定的命令，则将DRAM中的段表保存到闪存中。

2. 发明授权

US06967801B2 Adjusting clock frequency in a disk drive and a disk system using the same 失效
标题翻译：调整磁盘驱动器和使用相同的磁盘系统的时钟频率
公开(公告)号：US06967801B2
公开(公告)日：2005-11-22
申请号：US10382002
申请日：2003-03-04
申请人： Kazuhiko Satake , Katsuhiro Tsuneta
发明人： Kazuhiko Satake , Katsuhiro Tsuneta
IPC分类号： G11B5/00 , G11B5/012 , G11B20/10 , G11B20/24 , G11B15/18
CPC分类号： G11B5/012 , G11B20/10009 , G11B20/24 , G11B2005/001
摘要： The electromagnetic noise radiated from a magnetic disk system comprising two or more magnetic disk drives is reduced so as not to exceed a certain level although the electromagnetic noise from each magnetic disk drive is added up. This is achieved by setting a different operation clock frequency for each SCSI-ID so that the electromagnetic noise radiated from each magnetic disk drive has a different frequency band.
摘要翻译：虽然来自每个磁盘驱动器的电磁噪声相加，但由包括两个或多个磁盘驱动器的磁盘系统辐射的电磁噪声减小到不超过一定水平。这通过为每个SCSI-ID设置不同的操作时钟频率来实现，使得从每个磁盘驱动器辐射的电磁噪声具有不同的频带。

3. 发明授权

US08089717B1 Data reproducing apparatus for improving data recording efficiency 有权
标题翻译：用于提高数据记录效率的数据再现装置
公开(公告)号：US08089717B1
公开(公告)日：2012-01-03
申请号：US09638607
申请日：2000-08-15
申请人： Terumi Takashi , Kazuhiko Satake
发明人： Terumi Takashi , Kazuhiko Satake
IPC分类号： G11B5/09
CPC分类号： G11B20/1217 , G11B20/10055 , G11B2020/1232 , G11B2020/1287 , G11B2020/1292 , G11B2220/2516
摘要： When the format control circuit detects bit synchronization information in a sector to be reproduced on a magnetic disk, the format control circuit activates a read gate signal for commanding to read out the sector from the magnetic disk. When symbol synchronization information on the magnetic disk is detected, a SYNC detection circuit produces a synchronization information detection signal. The format control circuit calculates an end position of the sector on the magnetic disk on the basis of the synchronization information detection signal to inactivate the read gate signal. The data correction circuit and the decoding circuit reproduce data and ECC in the sector read out from the magnetic disk during the period that the read gate signal is active on the basis of the synchronization information detection signal to produce the data and ECC to a data bus. The data flow control circuit processes the data and ECC on the data bus after the elapse of a reproduction delay time on the basis of the synchronization information detection circuit.
摘要翻译：当格式控制电路检测要在磁盘上再现的扇区中的位同步信息时，格式控制电路激活用于命令从磁盘读出扇区的读门信号。当检测到磁盘上的符号同步信息时，SYNC检测电路产生同步信息检测信号。格式控制电路基于同步信息检测信号计算磁盘上的扇区的结束位置，以使读取门信号失活。数据校正电路和解码电路根据同步信息检测信号，在读门信号有效期间从磁盘读出的扇区再现数据和ECC，以产生数据和ECC到数据总线。数据流控制电路在同步信息检测电路的基础上经过了再现延迟时间之后，在数据总线上处理数据和ECC。

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