公开(公告)号：US06725395B2

公开(公告)日：2004-04-20

申请号：US09754678

申请日：2001-01-04

申请人： Hiroyuki Ono ,  Hideo Asano ,  Atsushi Kanamaru

发明人： Hiroyuki Ono ,  Hideo Asano ,  Atsushi Kanamaru

IPC分类号： G06F1108

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B2220/20

摘要： A method and apparatus for minimizing performance degradation resulting from reassignment of data to alternate sectors as a result of a defect within the original sector. For example, when a request for writing data “a” into a sector A is made but the data is written into an alternative sector A′ in an alternative sector area X because the sector A is defective. Therefore, when a write request for writing data “b” into a sector B is made subsequently, re-assignment is performed to a sector B′ subsequent to the alternative sector A′. Similarly, a defective sector C for which a request for writing data “c” is made is re-assigned an alternative sector C′. Thus, the successive data a, b, and c are written into the successive sectors A′, B′, and C′ in the same alternative sector area X, minimizing performance degradation.

摘要翻译： 一种用于最小化由于原始扇区内的缺陷而将数据重新分配给替代扇区所导致的性能下降的方法和装置。例如，当将数据“a”写入扇区A但是写入数据时 由于扇区A是有缺陷的，所以成为替代扇区区域X'中的替代扇区A'。 因此，当随后进行写入数据“b”的写入请求时，对替代扇区A'之后的扇区B'进行重新分配。 类似地，对写入数据“c”的请求的缺陷扇区C被重新分配替代扇区C'。 因此，连续数据a，b和c被写入相同替代扇区区域X中的连续扇区A'，B'和C'中，使性能下降最小化。

公开(公告)号：US06636985B1

公开(公告)日：2003-10-21

申请号：US09591257

申请日：2000-06-09

申请人： Hiroyuki Ono ,  Hideo Asano ,  Atsushi Kanamaru

发明人： Hiroyuki Ono ,  Hideo Asano ,  Atsushi Kanamaru

IPC分类号： G06F1122

CPC分类号： G11B20/1816 ,  G11B20/1883 ,  G11B2220/20

摘要： A disk storage device is disclosed for avoiding the instantaneous performance degradation as much as possible, and a method for processing a defective sector in such a disk storage device. There is executed a predetermined check related to a function of the disk storage device, preferably at least one of a read test, a write servo test, or a write test, when the disk storage device is in a waiting state where the disk storage device has no access from a host. The read test and write servo test are used to search for a defective sector on a disk and reassign the defective sector. The write test is used to indicate an abnormal condition of a head. Furthermore, the disk storage device includes a detector for detecting the waiting state, and a check logic for executing a predetermined check.

摘要翻译： 公开了一种用于尽可能避免瞬时性能下降的盘存储装置，以及用于处理这种盘存储装置中的缺陷扇区的方法。 当磁盘存储装置处于盘存储装置的等待状态时，执行与磁盘存储装置的功能相关的预定检查，优选地是读取测试，写入伺服测试或写入测试中的至少一个 无法从主机访问。 读取测试和写入伺服测试用于搜索磁盘上的故障扇区并重新分配缺陷扇区。 写入测试用于指示头部的异常状况。 此外，磁盘存储装置包括用于检测等待状态的检测器和用于执行预定检查的检查逻辑。

公开(公告)号：US06209046B1

公开(公告)日：2001-03-27

申请号：US09121944

申请日：1998-07-24

申请人： Masahiko Sato ,  Toshio Kakihara ,  Atsushi Kanamaru ,  Hiroshi Oshikawa ,  Hideo Asano

发明人： Masahiko Sato ,  Toshio Kakihara ,  Atsushi Kanamaru ,  Hiroshi Oshikawa ,  Hideo Asano

IPC分类号： G06F1338

CPC分类号： G06F3/0613 ,  G06F3/0653 ,  G06F3/0676 ,  G06F13/385

摘要： Methods and apparatus are described for a data transfer unit between a storage unit and a host, wherein a slower data transfer rate is established when a predetermined error is detected. In one embodiment the cyclicity of the error occurrence calculated and a wait is inserted between data to avoid transferring data at the calculated cyclicity point of the detected error. Optionally the data transfer unit may return the data transfer rate to the original data transfer rate or state after a predetermined time has elapsed, after a predetermined number of commands have been received, after a predetermined amount of data have been transferred, or by combination of these.

摘要翻译： 对于存储单元和主机之间的数据传送单元描述了方法和装置，其中当检测到预定的错误时建立较慢的数据传输速率。 在一个实施例中，计算的错误发生的周期性和等待被插入在数据之间以避免在所检测的错误的计算的循环点处传送数据。 可选地，数据传送单元可以在经过预定数量的命令已经被传送了预定数量的命令之后经过预定时间过去之后将数据传输速率返回到原始数据传输速率或状态， 这些。

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：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：US06622206B1

公开(公告)日：2003-09-16

申请号：US09591020

申请日：2000-06-09

申请人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

发明人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

IPC分类号： G06F1200

CPC分类号： G06F3/0613 ,  G06F3/0656 ,  G06F3/0676 ,  G06F12/0866

摘要： A method and system are disclosed to prevent significant degradation of a data transfer rate in write cache transfer, thereby keeping the minimum data transfer rate high. The initial value Ti of the virtual buffer full capacity T(tx) is set to F/N (where F is a data capacity of the buffer, and N>1) and it is determined if the amount of write cached data S(tx) reaches the virtual buffer full capacity T(tx) so that write cache transfer is enabled during an S(tx)

摘要翻译： 公开了一种方法和系统，以防止写入高速缓存传送中的数据传输速率的显着劣化，从而保持最小的数据传输速率。 虚拟缓冲器满容量T（tx）的初始值Ti被设置为F / N（其中F是缓冲器的数据容量，N> 1），并且确定写入缓存数据量S（tx ）达到虚拟缓冲器满容量T（tx），使得在S（tx）

公开(公告)号：US07487392B2

公开(公告)日：2009-02-03

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.

摘要翻译： 包含在数据存储装置中的非易失性存储器中的数据被更高安全地重写。 根据本发明的一个实施例，如果在存储在非易失性半导体存储器中的数据中包含错误，则HDD将正确的数据重写到非易失性半导体存储器。 特别地，在写命令的执行顺序期间，HDD执行存储在非易失性半导体存储器中的控制数据的重写处理。 更具体地说，数据在指定的时间段内被重写，该指定时间段落在从从HDD发送到主机的写数据传送处理的开始通知开始的时间段内直到命令完成通知。 由于在该指定时间内主机的功率可能被中断的可能性很小，因此可以安全地重写数据。

公开(公告)号：US20060153033A1

公开(公告)日：2006-07-13

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： G11B7/00

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：US6118608A

公开(公告)日：2000-09-12

申请号：US35679

申请日：1998-03-05

申请人： Toshio Kakihara ,  Atsushi Kanamaru ,  Takumi Satoh ,  Masahiko Satoh

发明人： Toshio Kakihara ,  Atsushi Kanamaru ,  Takumi Satoh ,  Masahiko Satoh

IPC分类号： G06F3/06 ,  G11B19/04 ,  G11B20/12 ,  G11B20/18 ,  G11B27/36 ,  G11B5/09 ,  G11B3/90

CPC分类号： G11B27/36 ,  G11B19/04 ,  G11B20/182

摘要： A disk drive unit and an error recovery method for the disk drive unit which can reduce processing time for ERP in resetting, thereby shortening response time to the reset is described. A normal error recovery procedure is executed if there is no reset request when a write error occurs, but if there is a reset request pending, a data record in which a write error occurs is registered as a defective position (e.g. sector) and an alternate (spare) position is assigned to accelerate the time when the drive can respond to the reset instruction. Data records with alternate positions assigned as a part of the reset activity are specially marked so that alternate position assignment can be undone as soon as is appropriate, for example, when the record is next read or written.

摘要翻译： 描述了一种磁盘驱动器单元和用于磁盘驱动器单元的错误恢复方法，其可以减少复位时的ERP处理时间，从而缩短对复位的响应时间。 如果在发生写入错误时没有复位请求，则执行正常的错误恢复过程，但是如果存在复位请求未决，则发生写入错误的数据记录被注册为缺陷位置（例如扇区）和备用 （备用）位置被分配以加速驱动器可以响应复位指令的时间。 具有分配为重置活动的一部分的备用位置的数据记录被特别标记，以便可以在适当的时候撤销交替位置分配，例如当下一次读取或写入记录时。