公开(公告)号：US20090080100A1

公开(公告)日：2009-03-26

申请号：US12283731

申请日：2008-09-12

申请人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

发明人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

IPC分类号： G11B5/09

CPC分类号： G11B20/1258 ,  G11B5/59644 ,  G11B20/22 ,  G11B2020/10916 ,  G11B2020/1238 ,  G11B2020/1244 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2220/2516

摘要： Embodiments of the present invention help to improve the capacity and the performance of a disk drive device. According to one embodiment, a data track pitch is set to each recording surface. The recording surfaces are divided into bands. A hard disk drive (HDD) sequentially moves a head to an adjacent data track in a band and performs a head switch at the band end in its data accessing. On a recording surface, the number of data tracks in each band is variable; and each band is constituted by different number of data tracks as necessary. The number of data tracks in each band is set so that the radial position of the band end comes close to the radial position of the corresponding band end on another recording surface. Accordingly, even if the recording surfaces have different variation rates of the data track pitch in the radial direction, increase in process time due to head switches can be suppressed.

摘要翻译： 本发明的实施例有助于提高磁盘驱动装置的容量和性能。 根据一个实施例，将数据轨道间距设置到每个记录表面。 记录表面被分成带。 硬盘驱动器（HDD）顺序地将磁头移动到频带中的相邻数据磁道，并在其数据访问中在频带端执行磁头切换。 在记录表面上，每个频带中的数据轨迹数是可变的; 并且每个频带由必要的不同数量的数据轨道构成。 每个带中的数据轨道的数量被设置为使得带端的径向位置接近另一个记录表面上相应带端的径向位置。 因此，即使记录面在径向方向上具有不同的数据磁道间距的变化率，也可以抑制由磁头开关引起的处理时间的增加。

公开(公告)号：US07320050B2

公开(公告)日：2008-01-15

申请号：US11031494

申请日：2005-01-07

申请人： Hiromi Kobayashi ,  Atsushi Kanamaru ,  Takahiro Saito

发明人： Hiromi Kobayashi ,  Atsushi Kanamaru ,  Takahiro Saito

IPC分类号： G06F12/00 ,  G06F13/00

CPC分类号： G06F3/0659 ,  G06F3/0611 ,  G06F3/0676

摘要： Embodiments of the invention raise the performance of a HDD by controlling the timing of notifying of command completion. In one embodiment, transmission of command completion notifications to a host is managed by a host interface manager. If two data write addresses respectively for two queued commands are adjacent or near to each other, that is, these addresses on the magnetic disk can be accessed without rotational latency, the host interface manager postpones the transmission of a command completion notification (X) concerning the first write command (X). Two command completion notifications (X) and (Y) are performed at a time after the write data (Y) for the next command is transmitted and its write to the medium is completed.

摘要翻译： 本发明的实施例通过控制指令完成通知的定时来提高HDD的性能。 在一个实施例中，主机接口管理器管理向主机发送命令完成通知。 如果两个排队命令的两个数据写入地址彼此相邻或相邻，也就是磁盘上的这些地址可以无转动等待时间被访问，主机接口管理器推迟发送命令完成通知（X） 第一个写命令（X）。 在发送下一个命令的写入数据（Y）并且其对介质的写入完成之后的时刻执行两个命令完成通知（X）和（Y）。

公开(公告)号：US06629200B1

公开(公告)日：2003-09-30

申请号：US09687270

申请日：2000-10-13

申请人： Atsushi Kanamaru ,  Hideo Asano ,  Akira Kibashi ,  Takahiro Saito ,  Keiji Kobayashi

发明人： Atsushi Kanamaru ,  Hideo Asano ,  Akira Kibashi ,  Takahiro Saito ,  Keiji Kobayashi

IPC分类号： G06F1208

CPC分类号： G06F12/0897 ,  G06F12/0866 ,  G06F2212/311 ,  G06F2212/312

摘要： A system and method are provided that reduce the amount of data held commonly in both high-ranking and low-ranking cache memories, thereby having each of those cache memories hold data more efficiently. More particularly, a computer system is provided with an HDC card 21 connected to an expansion bus 20 and an HDD unit 22 connected to the HDC card 21. The HDC card 21 is provided with a disk cache (high-ranking cache memory) and the HDD unit 22 is provided with a disk cache 54 (low-ranking cache memory). The HDC card 21 and the HDD unit 22 exchange select information for selecting a swap mode of each cache memory when the system is started up, thereby selecting different swap modes according to the exchanged select information respectively.

摘要翻译： 提供了一种系统和方法，其减少了高级和低级高速缓存存储器中共同保存的数据量，从而使这些高速缓冲存储器中的每一个更有效地保存数据。 更具体地，计算机系统设置有连接到扩展总线20的HDC卡21和连接到HDC卡21的HDD单元22.HDC卡21设置有磁盘高速缓存（高级缓存存储器），并且 HDD单元22设置有盘缓存54（低级缓存存储器）。 当系统启动时，HDC卡21和HDD单元22交换用于选择每个高速缓冲存储器的交换模式的选择信息，从而分别根据所交换的选择信息来选择不同的交换模式。

公开(公告)号：US06556369B1

公开(公告)日：2003-04-29

申请号：US09448227

申请日：1999-11-24

申请人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

发明人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

IPC分类号： G11B509

CPC分类号： G11B20/1883 ,  G11B5/012 ,  G11B5/5547 ,  G11B5/59633 ,  G11B5/82 ,  G11B27/329 ,  G11B2020/10916 ,  G11B2220/20

摘要： A disk drive device comprising a disk-shaped recording medium, having a recording surface on which a plurality of tracks having a predetermined width in a radial direction are defined, said recording surface including a first area wherein a plurality of recording tracks and a plurality of non-recording tracks are located so as to form an alternating pattern along the radial direction of the recording surface. The disk drive device may further comprise: a transducer to record information on the disk-shaped recording medium; a position error detector element to detect position error relative to a target track to be recorded on; an actuator to move the transducer to the target track according to the position error; and an end-of-seek detector, wherein when the transducer is moved to a target track inside the predetermined area the end-of-seek detector determines an end of seek based on whether the position error is less than a first threshold, and when the transducer is moved to a target track outside the predetermined area, the end-of-seek detector determines an end of seek based on whether the position error is less than a second threshold, wherein the second threshold is less than the first threshold.

摘要翻译： 一种盘驱动装置，其特征在于，具有盘状记录媒体，具有记录面，在该记录面上形成有沿径向具有预定宽度的多个轨迹，所述记录面包括：第一区域，其中多个记录道和多个记录道 非记录磁道位于记录表面的径向方向上形成交替图案。 磁盘驱动器装置还可以包括：用于在盘状记录介质上记录信息的换能器; 用于检测相对于要记录的目标轨迹的位置误差的位置误差检测器元件; 根据位置误差将传感器移动到目标轨道的致动器; 以及搜索结束检测器，其中当所述换能器被移动到所述预定区域内的目标轨迹时，所述寻求终点检测器基于所述位置误差是否小于第一阈值来确定搜索结束，以及何时 换能器被移动到预定区域外的目标轨道，寻求终点探测器基于位置误差是否小于第二阈值来确定搜索结束，其中第二阈值小于第一阈值。

公开(公告)号：US07451261B2

公开(公告)日：2008-11-11

申请号：US11317029

申请日：2005-12-22

申请人： Takahiro Saito ,  Takayuki Yamaguchi ,  Atsushi Kanamaru ,  Hiromi Kobayashi

发明人： Takahiro Saito ,  Takayuki Yamaguchi ,  Atsushi Kanamaru ,  Hiromi Kobayashi

IPC分类号： G06F12/00 ,  G06F5/00

CPC分类号： G11B20/10527 ,  G06F3/0611 ,  G06F3/0656 ,  G06F3/0676 ,  G06F12/0866 ,  G11B5/09 ,  G11B2020/10666 ,  G11B2020/10722 ,  G11B2020/10759 ,  G11B2220/2516

摘要： Embodiments of the invention improve the cache hit ratio of read data. A hard disk drive (HDD) according to an embodiment of the present invention determines whether the read buffer should be used in its entirety or the partial continuous space should be used to read read-data from the magnetic disk. When the HDD determines use of the partial continuous space, the HDD specifies the sub-buffer which is a continuous space wherein the leading-end position and the trailing-end position are coupled to each other, and executes data writing to the sub-buffer in parallel with data reading from the sub-buffer and transmission thereof to the host. The sub-buffer capacity coincides with the data length of the back data.

摘要翻译： 本发明的实施例提高读取数据的高速缓存命中率。 根据本发明的实施例的硬盘驱动器（HDD）确定读缓冲器是否应被整体使用，或者部分连续空间应用于从磁盘读取读取数据。 当HDD确定使用部分连续空间时，HDD指定作为连续空间的子缓冲器，其中前端位置和后端位置彼此耦合，并且执行对子缓冲器的数据写入 与从子缓冲器的数据读取并将其传输到主机并行。 子缓冲器容量与背面数据的数据长度一致。

公开(公告)号：US20060218437A1

公开(公告)日：2006-09-28

申请号：US11388640

申请日：2006-03-23

申请人： Tadahisa Kawa ,  Atsushi Kanamaru ,  Tsuguaki Kowa

发明人： Tadahisa Kawa ,  Atsushi Kanamaru ,  Tsuguaki Kowa

IPC分类号： G06F11/00

CPC分类号： G11B20/18 ,  G11B19/044 ,  G11B2020/10777 ,  G11B2220/2516

摘要： Data in a nonvolatile memory included in a data storage device is rewritten with higher security. According to one embodiment of the present invention, if an error is included in data stored in a nonvolatile semiconductor memory, the HDD rewrites correct data to the nonvolatile semiconductor memory. In particular, during the execution sequence of a write command, the HDD executes rewrite processing of control data stored in the nonvolatile semiconductor memory. More specifically, data is rewritten during a specified period of time that falls within a period of time starting from a start notification of write-data transfer processing that is sent from the HDD to the host, until a command completion notification. Since there is a very small possibility that the power of the host may be interrupted during this specified period of time, it is possible to securely rewrite data.

公开(公告)号：US20060106980A1

公开(公告)日：2006-05-18

申请号：US11271397

申请日：2005-11-10

申请人： Hiromi Kobayashi ,  Hirofumi Saitoh ,  Takahiro Saito ,  Tadahisa Kawa ,  Atsushi Kanamaru

发明人： Hiromi Kobayashi ,  Hirofumi Saitoh ,  Takahiro Saito ,  Tadahisa Kawa ,  Atsushi Kanamaru

IPC分类号： G06F13/00

CPC分类号： G06F3/0659 ,  G06F3/0611 ,  G06F3/0656 ,  G06F3/0676

摘要： Embodiments of the present invention provide a media drive capable of improving command processing performance by, when a plurality of commands is queued, shortening seek time and rotational latency, and also effectively making use of the shortened period of time. In one embodiment, a HDD includes a queue capable of storing a plurality of commands, and a queue manager for optimizing the execution order of the plurality of commands on the basis of whether or not the execution of each command requires access to a medium. The queue manager determines the execution order so that medium access processing of accessing a disk for execution, and data transfer processing of transferring data between the HDD and a host, are executed in parallel with each other. For example, read processing and transfer processing are executed in parallel with each other. The read processing is adaptive to read out a read command, data of which does not exist in the cache, from the disk into the cache. The transfer processing is adaptive to transfer a read command, data of which exists in the cache, to the host.

摘要翻译： 本发明的实施例提供一种媒体驱动器，其能够通过在多个命令排队时缩短查找时间和旋转等待时间，并且还有效地利用缩短的时间段来改善命令处理性能。 在一个实施例中，HDD包括能够存储多个命令的队列，以及队列管理器，用于根据每个命令的执行是否需要访问介质来优化多个命令的执行顺序。 队列管理器确定执行顺序，使得访问用于执行的盘的介质访问处理以及在HDD和主机之间传送数据的数据传送处理彼此并行执行。 例如，读取处理和传送处理彼此并行地执行。 读取处理自适应地读出缓存中不存在其数据的读取命令从盘到高速缓存。 传输处理适应于将缓存中存在的数据的读取命令传送到主机。

公开(公告)号：US20060101174A1

公开(公告)日：2006-05-11

申请号：US11267539

申请日：2005-11-04

申请人： Atsushi Kanamaru ,  Tadahisa Kawa ,  Hiromi Kobayashi ,  Hirofumi Saitoh

发明人： Atsushi Kanamaru ,  Tadahisa Kawa ,  Hiromi Kobayashi ,  Hirofumi Saitoh

IPC分类号： G06F3/06

CPC分类号： G11B19/02 ,  G06F1/3221 ,  G06F1/3268 ,  G06F3/0601 ,  G06F2003/0697 ,  Y02D10/154 ,  Y02D50/20

摘要： Embodiments of the present invention provide a media drive that is intended for reduction in power consumption required for serial communications to/from a host, and a power saving method thereof. In one embodiment, a HDD includes: a cache; a host interface for transferring, to a host, transfer data read out from the cache; a host interface manager that controls the execution of commands so as to generate a transfer unnecessary period during which a command and transfer data need not be exchanged with the host; and a MPU that brings a serial communication part of the host interface into a power save mode during the transfer unnecessary period. The host interface manager determines the optimum data transfer timing of transferring data from the cache to the host on the basis of a transfer rate at which data is transferred to the host, and a read rate at which data is read out from a disk into the cache.

摘要翻译： 本发明的实施例提供了用于降低与主机的串行通信所需的功耗的介质驱动器及其省电方法。 在一个实施例中，HDD包括：高速缓存; 用于向主机传送从高速缓存读出的数据的主机接口; 主机接口管理器，其控制命令的执行，以便产生不需要与主机交换命令和传送数据的转移不必要的周期; 以及在传输不必要的周期期间将主机接口的串行通信部分带入省电模式的MPU。 主机接口管理器根据数据传送到主机的传输速率和数据从磁盘读出的读取速率来确定将数据从高速缓存传送到主机的最佳数据传送定时， 缓存。

公开(公告)号：US06721854B1

公开(公告)日：2004-04-13

申请号：US09698344

申请日：2000-10-27

申请人： Hideo Asano ,  Atsushi Kanamaru ,  Kelvin Kao ,  Akira Kibashi ,  Koichi Kushida ,  Takahiro Saito ,  Chi-Chen Wu ,  Daniel James Colegrove

发明人： Hideo Asano ,  Atsushi Kanamaru ,  Kelvin Kao ,  Akira Kibashi ,  Koichi Kushida ,  Takahiro Saito ,  Chi-Chen Wu ,  Daniel James Colegrove

IPC分类号： G06F1200

CPC分类号： G06F13/387 ,  G06F12/0866

摘要： An external controller performs a thorough analysis and prediction on true requests from an application to issue a look-ahead request to an HDD or other auxiliary storage. An HDC card is connected to an HDD device which stores data and has a cache memory. The HDC card, which controls the HDD device, includes an access request tracer for tracing a true access request made by an application program executed by a host directly from the application program, a speculation request determination section for determining a speculation request to be expected later based on the traced true access request, and an HDC for issuing the determined speculation request to the HDD device.

摘要翻译： 外部控制器对来自应用程序的真实请求进行彻底的分析和预测，以向HDD或其他辅助存储器发出预先请求。 HDC卡连接到存储数据并具有高速缓冲存储器的HDD设备。 控制HDD设备的HDC卡包括用于跟踪由应用程序直接由主机执行的应用程序所做的真实访问请求的访问请求跟踪器，用于确定稍后期望的推测请求的推测请求确定部分 基于跟踪的真实访问请求，以及用于将确定的推测请求发布到HDD设备的HDC。

公开(公告)号：US08009376B2

公开(公告)日：2011-08-30

申请号：US12283731

申请日：2008-09-12

申请人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

发明人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

IPC分类号： G11B5/09

CPC分类号： G11B20/1258 ,  G11B5/59644 ,  G11B20/22 ,  G11B2020/10916 ,  G11B2020/1238 ,  G11B2020/1244 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2220/2516

摘要： Embodiments of the present invention help to improve the capacity and the performance of a disk drive device. According to one embodiment, a data track pitch is set to each recording surface. The recording surfaces are divided into bands. A hard disk drive (HDD) sequentially moves a head to an adjacent data track in a band and performs a head switch at the band end in its data accessing. On a recording surface, the number of data tracks in each band is variable; and each band is constituted by different number of data tracks as necessary. The number of data tracks in each band is set so that the radial position of the band end comes close to the radial position of the corresponding band end on another recording surface. Accordingly, even if the recording surfaces have different variation rates of the data track pitch in the radial direction, increase in process time due to head switches can be suppressed.

摘要翻译： 本发明的实施例有助于提高磁盘驱动装置的容量和性能。 根据一个实施例，将数据轨道间距设置到每个记录表面。 记录表面被分成带。 硬盘驱动器（HDD）顺序地将磁头移动到频带中的相邻数据磁道，并在其数据访问中在频带端执行磁头切换。 在记录表面上，每个频带中的数据轨迹数是可变的; 并且每个频带由必要的不同数量的数据轨道构成。 每个带中的数据轨道的数量被设置为使得带端的径向位置接近另一个记录表面上相应带端的径向位置。 因此，即使记录面在径向方向上具有不同的数据磁道间距的变化率，也可以抑制由磁头开关引起的处理时间的增加。