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    Write retry method and magnetic tape device
    3.
    发明专利
    Write retry method and magnetic tape device 有权
    写入方法和磁带设备

    公开(公告)号：JP2008276879A

    公开(公告)日：2008-11-13

    申请号：JP2007120301

    申请日：2007-04-27

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： OISHI YUTAKA ,  NAKAMURA KENJI ,  MASUDA SETSUKO

    IPC: G11B20/18 ,  G11B20/10 ,  G11B20/12

    CPC classification number: G11B5/584 ,  G11B15/05

    Abstract: PROBLEM TO BE SOLVED: To provide a write retry method for reducing permanent errors, and a magnetic tape device including the method.
    SOLUTION: A write control method for writing at least one data set in a predetermined distance of a tape medium in a longitudinal direction repeats a retry operation for writing data set in a tape position where a tape medium is forwarded only by a small distance when an error occurs while writing the data set. When either the repetition step reaches the predetermined number of times or the write limit time of one data set is exceeded is achieved, the tape medium is forwarded from the tape position of the data set correctly written immediately before in time to a position immediately before the forward tape position of a predetermined distance to execute a write retry operation. The number of permanent errors is reduced as compared with the conventional case within a timeout. Thus, unnecessary tape cartridge replacing requests are reduced.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于减少永久性错误的写入重试方法，以及包括该方法的磁带装置。 解决方案：用于在纵向方向上写入带介质的预定距离中的至少一个数据集的写入控制方法重复用于将数据集写入磁带介质被转发的磁带位置的重试操作， 编写数据集时发生错误时的距离。 当重复步骤达到预定次数或超过一个数据集的写入限制时间时，磁带介质从紧接在时间之前正确写入的数据集的磁带位置转发到紧接在 转发预定距离的磁带位置以执行写入重试操作。 与超时中的常规情况相比，永久性错误的数量减少。 因此，减少了不必要的磁带盒更换请求。 版权所有（C）2009，JPO＆INPIT

    Device and method for writing data to tape medium
    5.
    发明专利
    Device and method for writing data to tape medium 有权
    用于将数据写入带介质的装置和方法

    公开(公告)号：JP2012014778A

    公开(公告)日：2012-01-19

    申请号：JP2010149607

    申请日：2010-06-30

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： OISHI YUTAKA ,  TAKETOMI TOMOKO ,  HIRATA TAKAMASA ,  WATANABE TERUE ,  MASUDA SETSUKO ,  MORI YUKO

    IPC: G11B20/10

    CPC classification number: G11B5/00813 ,  G11B20/10527 ,  G11B20/18 ,  G11B2020/10759 ,  G11B2220/90

    Abstract: PROBLEM TO BE SOLVED: To improve write performance to a tape medium while securing resistance to errors.SOLUTION: In a controller 16 for a tape drive, a CM input/output part 44 recognizes a tape format, a tape variable acquisition part 45 acquires a tape variable corresponding to the tape format, a set variable acquisition part 46 acquires a set variable, a minimum number calculation part 47 uses the tape variable and the set variable to calculate a minimum number m of a sub-data set to write so as to secure resistance to a burst error. When a command processing part 41 receives a synchronous command, a buffer management part 42 generates an n pieces of sub-data set for storing data in the buffer, when n is smaller than m, padding is performed to make m pieces of sub-data set write data, and when n is equal to or larger than m, n pieces of sub-data set is made the write data, and a channel input/output part 43 writes the write data to the tape.

    Abstract translation: 要解决的问题：提高对磁带介质的写入性能，同时确保抵抗错误。 解决方案：在用于磁带驱动器的控制器16中，CM输入/输出部分44识别磁带格式，磁带可变获取部分45获取与磁带格式对应的磁带变量，设定变量获取部分46获取 设定变量，最小数量计算部分47使用磁带变量和设定变量来计算要写入的子数据集的最小数量m，以确保对突发错误的抵抗力。 当命令处理部分41接收到同步命令时，缓冲器管理部分42在n小于m时生成用于存储数据的n个子数据组，当n小于m时，执行填充以使m个子数据 设置写入数据，并且当n等于或大于m时，将n个子数据组设置为写入数据，并且通道输入/输出部分43将写入数据写入磁带。 版权所有（C）2012，JPO＆INPIT

    Tape recorder and tape recording method
    6.
    发明专利
    Tape recorder and tape recording method 有权
    磁带记录器和磁带记录方法

    公开(公告)号：JP2011113605A

    公开(公告)日：2011-06-09

    申请号：JP2009268918

    申请日：2009-11-26

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： OISHI YUTAKA ,  ITAGAKI HIROSHI ,  WATANABE TERUE ,  MASUDA SETSUKO

    IPC: G11B20/12 ,  G11B20/10

    CPC classification number: G11B27/107 ,  G11B27/032 ,  G11B2220/93

    Abstract: PROBLEM TO BE SOLVED: To provide a tape recorder and a tape recording method for effectively using a tape by increasing a free space without losing necessary data on the tape.
    SOLUTION: The tape recorder has a tape including at least one partition, and controls access to the tape. The tape recorder includes: a means for identifying the position of data on the tape; a means for sequentially reading necessary data areas in the data; a means for sequentially copying the necessary data areas to the beginning of a free space on the tape; a means for creating a continuous forward free space formed of unnecessary data areas and copy source areas of the necessary data areas on the tape; and a means for moving the beginning of the partition (BOP) to a position immediately after the forward free space and for updating positional information on the beginning of the partition.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种磁带记录器和磁带记录方法，用于通过增加自由空间而有效地使用磁带，而不会在磁带上丢失必要的数据。

    解决方案：磁带录音机具有至少包含一个分区的磁带，并控制磁带的访问。 录像机包括：用于识别磁带上的数据位置的装置; 用于顺序读取数据中的必要数据区域的装置; 用于顺序地将所需数据区复制到磁带上的可用空间的开头的装置; 用于创建由不必要的数据区域形成的连续向前空闲空间并复制在磁带上的必要数据区域的源区域的装置; 以及用于将分区（BOP）的开始移动到紧接在前向空闲空间之后的位置并用于更新分区开始处的位置信息的装置。 版权所有（C）2011，JPO＆INPIT

    Device and method for writing data in tape medium
    7.
    发明专利
    Device and method for writing data in tape medium 有权
    用于在磁带介质中写入数据的设备和方法

    公开(公告)号：JP2010040106A

    公开(公告)日：2010-02-18

    申请号：JP2008202309

    申请日：2008-08-05

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： OISHI YUTAKA ,  NAKAYAMA KOICHI ,  MASUDA SETSUKO ,  NAKAMURA KENJI

    IPC: G11B5/09 ,  G11B20/10 ,  G11B20/12

    CPC classification number: G11B5/584

    Abstract: PROBLEM TO BE SOLVED: To solve a following problem: data written in an ABF lap cannot be read out by being overwritten by the other data written in the ABF lap or data written in a normal lap. SOLUTION: In a controller 16 of a tape drive, a buffer managing part 42 detects the occurrence of flash, a channel input/output part 43 writes first data in a ABF lap of a normal direction at the occurrence of flash through a write-in head, and writes second data in a second ABF lap of the reverse direction at the occurrence of flash, after that, the part 43 writes first data and second data in a first normal lap of a normal direction adjacent to the first ABF lap. Among them, when the second data is written in the second ABF lap, an offset discriminating part 44 controls the write-in head so that the write-in head is offset to a direction of a second normal lap of a reverse direction used next to the first normal lap. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：为了解决以下问题：由ABF圈中写入的其他数据或正常圈中写入的数据覆盖ABF圈中写入的数据不能被读出。 解决方案：在磁带驱动器的控制器16中，缓冲器管理部分42检测闪光的发生，通道输入/输出部分43在闪光发生时在正常方向的ABF圈中写入第一数据，通过 写入头，并且在闪光发生时在反方向的第二ABF圈中写入第二数据，之后，部分43将第一数据和第二数据写入与第一ABF相邻的法线方向的第一正常圈 一圈。 其中，当在第二ABF圈中写入第二数据时，偏移识别部分44控制写入头，使得写入头偏移到除了第二个ABF圈之外的反向的第二正常搭接的方向 第一正常圈 版权所有（C）2010，JPO＆INPIT

    Apparatus and method for reading out data recorded on tape
    8.
    发明专利
    Apparatus and method for reading out data recorded on tape 有权
    读取记录在录像带上的数据的装置和方法

    公开(公告)号：JP2010027118A

    公开(公告)日：2010-02-04

    申请号：JP2008185083

    申请日：2008-07-16

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： MASUDA SETSUKO ,  OISHI YUTAKA ,  NAKAMURA KENJI ,  TANAKA KEISUKE

    IPC: G11B5/09 ,  G11B20/10

    CPC classification number: G11B5/584

    Abstract: PROBLEM TO BE SOLVED: To accelerate reading out of a specific kind of data from among a plurality of kinds of data with different formats.
    SOLUTION: In a controller 16 of a tape drive, a command processing unit 41 receives a request for reading out old data behind EOD of new data; a channel input/output unit 43 receives data read out with a read head in response to the request; and a buffer managing unit 42 receives this data. A header information determining unit 44 determines whether this data includes header information of the old data. If it is determined that this data includes the header information of the old data, a data set determining unit 45 determines whether a data set is extractable from this data. If it is determined that the data set is not extractable, a move signal output unit 47 outputs a signal for moving the read head in a direction of the new data.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：加速从具有不同格式的多种数据中读出特定种类的数据。 解决方案：在磁带驱动器的控制器16中，命令处理单元41接收新数据背后的EOD读出旧数据的请求; 通道输入/输出单元43响应于该请求接收用读取头读出的数据; 并且缓冲器管理单元42接收该数据。 头信息确定单元44确定该数据是否包括旧数据的头信息。 如果确定该数据包括旧数据的标题信息，则数据集确定单元45确定数据集是否可从该数据中提取。 如果确定数据集不可提取，则移动信号输出单元47输出用于在新数据的方向上移动读取头的信号。 版权所有（C）2010，JPO＆INPIT

    Data overwriting method in tape medium, and magnetic tape device equipped with the same
    9.
    发明专利
    Data overwriting method in tape medium, and magnetic tape device equipped with the same 有权
    带介质中的数据覆盖方法及其相关的磁带设备

    公开(公告)号：JP2009163835A

    公开(公告)日：2009-07-23

    申请号：JP2008001685

    申请日：2008-01-08

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： OISHI YUTAKA ,  NAKAMURA KENJI ,  MASUDA SETSUKO

    IPC: G11B20/10 ,  G11B20/18

    CPC classification number: G11B20/1883 ,  G11B20/1833 ,  G11B27/36 ,  G11B2020/183 ,  G11B2020/1836 ,  G11B2020/1896 ,  G11B2220/20 ,  G11B2220/90

    Abstract: PROBLEM TO BE SOLVED: To provide an information recording device capable of performing retrial having a position shifted during overwriting of data set written in a recording medium.
    SOLUTION: To enable identification based on a writing order number of a data set and the number of writing times (WP) of the data set of the number, data sets are sequentially written in a recording medium. By using a data set written in the recording medium as an old data set, the old data set is substantially overwritten with a data of a new number. A write control means is provided for executing the overwriting means of the old data set by using a value having WP added as a new WP, when an error occurs during overwriting, in a position where the recording medium is shifted forward from the position of the old data set of the recording medium. A predetermined distance is a distance where overwriting of a part of the old data set with a new data set inhibits error correction.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种信息记录装置，其能够执行在重写写入记录介质中的数据集时移位的重试。 解决方案：为了能够基于数据集的写入顺序号和数字的数据组的写入次数（WP）来进行识别，数据组被顺序地写入记录介质。 通过使用写在记录介质中的数据集作为旧数据集，旧数据集被新数字的数据基本上覆盖。 一种写控制装置，用于通过使用添加有WP作为新WP的值来执行旧数据集的重写装置，当在重写期间发生错误时，在记录介质从位置 记录介质的旧数据集。 预定距离是用新数据集重写一部分旧数据集的距离，禁止纠错。 版权所有（C）2009，JPO＆INPIT

    Storage device for detecting defect in recording medium, defect detecting method, and program
    10.
    发明专利
    Storage device for detecting defect in recording medium, defect detecting method, and program 有权
    用于检测记录缺陷的存储设备，缺陷检测方法和程序

    公开(公告)号：JP2008310902A

    公开(公告)日：2008-12-25

    申请号：JP2007159126

    申请日：2007-06-15

    Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

    Inventor： NAKAYAMA KOICHI ,  OISHI YUTAKA ,  MASUDA SETSUKO ,  NAKAMURA KENJI

    IPC: G11B20/18

    CPC classification number: G11B20/1816 ,  G11B2220/90

    Abstract: PROBLEM TO BE SOLVED: To provide a technique of detecting a defect having a relatively narrow range on a tape medium.
    SOLUTION: A tape defect detecting device includes a reading unit for reading data from a tape medium, an error correcting unit for performing error correction with respect to the data read by the reading unit, a number-of-times-of-correction counting unit for counting the number of times of error correction by the error correcting unit for each of a plurality of regions into which the tape medium is divided, a temporary storing unit for temporarily storing the number of times of error correction counted by the number-of-times-of-correction counting unit for each region, and a detection unit for detecting a defect on the tape medium based on a distribution on the tape medium of regions having a relatively large number of times of error correction as compared to those of other regions. The detection unit preferably uses the Gini coefficient to detect a situation in which the regions having a relatively large number of times of error correction as compared to those of other regions are concentrated at a particular position on the tape medium.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种在带介质上检测具有相对窄范围的缺陷的技术。 解决方案：磁带缺陷检测装置包括用于从磁带介质读取数据的读取单元，用于对由读取单元读取的数据执行纠错的纠错单元， 校正计数单元，用于对由所述带介质划分成的多个区域中的每个区域进行纠错单元的误差校正次数的计数;临时存储单元，用于临时存储以所述数量为单位的误差校正次数 每个区域的校正次数计数单元;以及检测单元，用于基于在具有相对大量的错误校正次数的区域上的带介质上的分布来检测带介质上的缺陷，与那些 的其他地区。 检测单元优选使用基尼系数来检测与其他区域相比具有相对大量的纠错次数的区域集中在带介质上的特定位置的情况。 版权所有（C）2009，JPO＆INPIT

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