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1. 发明申请

US20100031061A1 Data storage device and management method of cryptographic key thereof 有权
标题翻译：数据存储装置及其加密密钥的管理方法
公开(公告)号：US20100031061A1
公开(公告)日：2010-02-04
申请号：US12079699
申请日：2008-03-27
申请人： Yoshiju Watanabe , Toshio Kakihara
发明人： Yoshiju Watanabe , Toshio Kakihara
IPC分类号： G06F12/14
CPC分类号： G11B20/0021 , G06F21/80 , G11B20/00086 , G11B20/00137 , G11B20/00152 , G11B20/00246 , G11B20/00253 , G11B20/00492 , G11B2220/2516 , H04L9/0844 , H04L9/0891
摘要： Embodiments of the present invention help to securely manage a data cryptographic key in a data storage device. In an embodiment of the present invention, a cryptographic processor for encrypting and decrypting data is located between a host interface and a memory manager. In parts of the hard disk drive (HDD), except for the host interface, the HDD handles user data in an encrypted state. A data cryptographic key which the cryptographic processor uses to encrypt and decrypt the user data is encrypted and stored in a magnetic disk. A multiprocessing unit (MPU) decrypts the data cryptographic key using a password and a random number to supply it to the cryptographic processor. Using the password and the random number, the HDD can manage the data cryptographic key with more security.
摘要翻译：本发明的实施例有助于安全地管理数据存储设备中的数据密码密钥。在本发明的实施例中，用于加密和解密数据的密码处理器位于主机接口和存储器管理器之间。在硬盘驱动器（HDD）的部分，除了主机接口之外，HDD处理加密状态下的用户数据。加密处理器用于加密和解密用户数据的数据密码密钥被加密并存储在磁盘中。多处理单元（MPU）使用密码和随机数解密数据加密密钥以将其提供给密码处理器。使用密码和随机数，HDD可以更安全地管理数据加密密钥。

2. 发明申请

US20080075282A1 Data recording device, and data management method 审中-公开
标题翻译：数据记录装置和数据管理方法
公开(公告)号：US20080075282A1
公开(公告)日：2008-03-27
申请号：US11894834
申请日：2007-08-21
申请人： Yoshiju Watanabe , Toshio Kakihara
发明人： Yoshiju Watanabe , Toshio Kakihara
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G11B20/00137 , G11B20/00152 , G11B20/00173 , G11B20/0021
摘要： Embodiments in accordance with the present invention provide a data recording device that is capable of easily managing, on a user basis, data key used for data encryption, and to provide a data management method thereof. According to one embodiment, a data encryption/decryption circuit performs the steps of: encrypting write data inputted from the host side, and then outputting the encrypted write data to the magnetic disk side; and decrypting read data inputted from the magnetic disk side, and then outputting the decrypted read data to the host side. A data-key management circuit manages a data key used to operate the data encryption/decryption circuit.
摘要翻译：根据本发明的实施例提供一种数据记录装置，其能够容易地在用户的基础上管理用于数据加密的数据密钥，并提供其数据管理方法。根据一个实施例，数据加密/解密电路执行以下步骤：加密从主机侧输入的写入数据，然后将加密的写入数据输出到磁盘侧; 并且解密从磁盘侧输入的读取数据，然后将解密的读取数据输出到主机侧。数据密钥管理电路管理用于操作数据加密/解密电路的数据密钥。

3. 发明申请

US20110072232A1 DISK DRIVE INCLUDING A HOST INTERFACE SUPPORTING DIFFERENT SIZES OF DATA SECTORS AND METHOD FOR WRITING DATA THERETO 有权
标题翻译：磁盘驱动器，包括支持数据区的不同大小的主机接口和写入数据的方法
公开(公告)号：US20110072232A1
公开(公告)日：2011-03-24
申请号：US12545788
申请日：2009-08-21
申请人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
发明人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
IPC分类号： G06F12/02
CPC分类号： G11B5/012 , G11B5/09 , G11B27/11 , G11B27/36 , G11B2220/2516
摘要： A method for writing data to a disk drive. The method includes: receiving a write command; and, determining whether a beginning and an end of a rewrite area specified by the write command agree with boundaries of large-sized data sectors on a disk. The method also includes: reading head and tail data sectors and making a backup of the head and tail data sectors in first and second non-volatile memory areas, respectively, if the beginning of the rewrite area does not agree with the boundaries. The method includes starting a rewrite of the rewrite area after completing backups into first and second non-volatile memory areas. Moreover, the method includes: determining a state stage by using data in first, second, third and fourth non-volatile memory areas if a power shut-down occurs during execution of the write command; and, executing a recovery process in accordance with the determined state stage.
摘要翻译：一种将数据写入磁盘驱动器的方法。该方法包括：接收写命令; 并且确定由写入命令指定的重写区域的开始和结束是否与盘上的大尺寸数据扇区的边界一致。该方法还包括：如果重写区域的开始与边界不一致，则分别读取头部和尾部数据扇区并分别在第一和第二非易失性存储区域中备份头尾数据扇区。该方法包括在完成对第一和第二非易失性存储器区域的备份之后重新开始重写区域的重写。此外，该方法包括：如果在写入命令的执行期间发生电源关闭，则通过使用第一，第二，第三和第四非易失性存储器区域中的数据来确定状态级; 以及根据所确定的状态阶段执行恢复处理。

4. 发明授权

US08291190B2 Disk drive including a host interface supporting different sizes of data sectors and method for writing data thereto 有权
标题翻译：磁盘驱动器包括支持不同大小的数据扇区的主机接口和用于向其写入数据的方法
公开(公告)号：US08291190B2
公开(公告)日：2012-10-16
申请号：US12545788
申请日：2009-08-21
申请人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
发明人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
IPC分类号： G06F13/00 , G06F13/28
CPC分类号： G11B5/012 , G11B5/09 , G11B27/11 , G11B27/36 , G11B2220/2516
摘要： A method for writing data to a disk drive. The method includes: receiving a write command; and, determining whether a beginning and an end of a rewrite area specified by the write command agree with boundaries of large-sized data sectors on a disk. The method also includes: reading head and tail data sectors and making a backup of the head and tail data sectors in first and second non-volatile memory areas, respectively, if the beginning of the rewrite area does not agree with the boundaries. The method includes starting a rewrite of the rewrite area after completing backups into first and second non-volatile memory areas. Moreover, the method includes: determining a state stage by using data in first, second, third and fourth non-volatile memory areas if a power shut-down occurs during execution of the write command; and, executing a recovery process in accordance with the determined state stage.
摘要翻译：一种将数据写入磁盘驱动器的方法。该方法包括：接收写命令; 并且确定由写入命令指定的重写区域的开始和结束是否与盘上的大尺寸数据扇区的边界一致。该方法还包括：如果重写区域的开始与边界不一致，则分别读取头部和尾部数据扇区并分别在第一和第二非易失性存储区域中备份头尾数据扇区。该方法包括在完成对第一和第二非易失性存储器区域的备份之后重新开始重写区域的重写。此外，该方法包括：如果在写入命令的执行期间发生电源关闭，则通过使用第一，第二，第三和第四非易失性存储器区域中的数据来确定状态级; 以及根据所确定的状态阶段执行恢复处理。

5. 发明授权

US08239691B2 Data storage device and management method of cryptographic key thereof 有权
标题翻译：数据存储装置及其加密密钥的管理方法
公开(公告)号：US08239691B2
公开(公告)日：2012-08-07
申请号：US12079699
申请日：2008-03-27
申请人： Yoshiju Watanabe , Toshio Kakihara
发明人： Yoshiju Watanabe , Toshio Kakihara
IPC分类号： G06F12/14
CPC分类号： G11B20/0021 , G06F21/80 , G11B20/00086 , G11B20/00137 , G11B20/00152 , G11B20/00246 , G11B20/00253 , G11B20/00492 , G11B2220/2516 , H04L9/0844 , H04L9/0891
摘要： Embodiments of the present invention help to securely manage a data cryptographic key in a data storage device. In an embodiment of the present invention, a cryptographic processor for encrypting and decrypting data is located between a host interface and a memory manager. In parts of the hard disk drive (HDD), except for the host interface, the HDD handles user data in an encrypted state. A data cryptographic key which the cryptographic processor uses to encrypt and decrypt the user data is encrypted and stored in a magnetic disk. A multiprocessing unit (MPU) decrypts the data cryptographic key using a password and a random number to supply it to the cryptographic processor. Using the password and the random number, the HDD can manage the data cryptographic key with more security.
摘要翻译：本发明的实施例有助于安全地管理数据存储设备中的数据密码密钥。在本发明的实施例中，用于加密和解密数据的密码处理器位于主机接口和存储器管理器之间。在硬盘驱动器（HDD）的部分，除了主机接口之外，HDD处理加密状态下的用户数据。加密处理器用于加密和解密用户数据的数据密码密钥被加密并存储在磁盘中。多处理单元（MPU）使用密码和随机数解密数据加密密钥以将其提供给密码处理器。使用密码和随机数，HDD可以更安全地管理数据加密密钥。

6. 发明授权

US06289416B1 Disk drive device and a method for controlling the same 失效
标题翻译：磁盘驱动装置及其控制方法
公开(公告)号：US06289416B1
公开(公告)日：2001-09-11
申请号：US09139933
申请日：1998-08-26
申请人： Yukio Fukushima , Toshio Kakihara , Kazushige Okutsu , Tetsuo Ueda
发明人： Yukio Fukushima , Toshio Kakihara , Kazushige Okutsu , Tetsuo Ueda
IPC分类号： G06F1208
CPC分类号： G06F3/0607 , G06F3/0659 , G06F3/0676 , G06F12/0866
摘要： 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.
摘要翻译：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. 发明申请

US20090216943A1 Data storage device and data management method in data storage device 有权
标题翻译：数据存储设备和数据存储设备中的数据管理方法
公开(公告)号：US20090216943A1
公开(公告)日：2009-08-27
申请号：US12380116
申请日：2009-02-23
申请人： Shuhji Yamada , Toshio Kakihara , Katsuhiro Imoto , Akihiko Mouri
发明人： Shuhji Yamada , Toshio Kakihara , Katsuhiro Imoto , Akihiko Mouri
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/0246 , G06F11/1441 , G06F11/1471 , G06F2212/7201 , G06F2212/7206 , G06F2212/7207
摘要： Embodiments of the present invention improve efficiency in saving log data in a hard disk drive (HDD) equipped with a magnetic disk and a flash memory,. In an aspect of one embodiment of the present invention, a HDD creates a segment table to associate an address of user data in a flash memory with an LBA 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 journals indicating the update of the segment table and saves it to the flash memory. The latest segment table can be restored using the segment table and the journals in the flash memory.
摘要翻译：本发明的实施例提高了在装备有磁盘和闪存的硬盘驱动器（HDD）中保存日志数据的效率。在本发明的一个实施例的一个方面，HDD创建一个分段表以将闪速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创建指示段表更新的日志，并将其保存到闪存。可以使用片段表和闪存中的日志恢复最新的分段表。

8. 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。

9. 发明授权

US06219750B1 Disk drive having control mechanism to reduce or eliminate redundant write operations and the method thereof 失效
标题翻译：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
公开(公告)号：US06219750B1
公开(公告)日：2001-04-17
申请号：US09049682
申请日：1998-03-27
申请人： Atshushi Kanamaru , Toshio Kakihara , Hideo Asano , Atsushi Tobari
发明人： Atshushi Kanamaru , Toshio Kakihara , Hideo Asano , Atsushi Tobari
IPC分类号： G06F1208
CPC分类号： G06F3/0616 , G06F3/0659 , G06F3/0677 , G06F12/0866 , G06F2212/312
摘要： 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.
摘要翻译：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。

10. 发明授权

US08082409B2 Data storage device and data management method in data storage device 有权
标题翻译：数据存储设备和数据存储设备中的数据管理方法
公开(公告)号：US08082409B2
公开(公告)日：2011-12-20
申请号：US12380116
申请日：2009-02-23
申请人： Shuhji Yamada , Toshio Kakihara , Katsuhiro Imoto , Akihiko Mouri
发明人： Shuhji Yamada , Toshio Kakihara , Katsuhiro Imoto , Akihiko Mouri
IPC分类号： G06F12/00
CPC分类号： G06F12/0246 , G06F11/1441 , G06F11/1471 , G06F2212/7201 , G06F2212/7206 , G06F2212/7207
摘要： In one embodiment, a HDD creates a segment table to associate an address of user data in a flash memory with an LBA 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 journals indicating the update of the segment table and saves it to the flash memory. The latest segment table can be restored using the segment table and the journals in the flash memory.
摘要翻译：在一个实施例中，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创建指示段表更新的日志，并将其保存到闪存。可以使用片段表和闪存中的日志恢复最新的分段表。

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