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    Reducing total seek time for determining an access sequence of data stored on a tape medium
    3.
    发明授权
    Reducing total seek time for determining an access sequence of data stored on a tape medium 有权
    减少用于确定存储在磁带介质上的数据的访问顺序的总寻道时间

    公开(公告)号：US08867160B2

    公开(公告)日：2014-10-21

    申请号：US13570749

    申请日：2012-08-09

    申请人： Takashi Katagiri ,  Yuhko Mori ,  Masakatsu Murata ,  Hirokazu Nakayama ,  Yutaka Oishi

    发明人： Takashi Katagiri ,  Yuhko Mori ,  Masakatsu Murata ,  Hirokazu Nakayama ,  Yutaka Oishi

    IPC分类号： G11B15/18

    CPC分类号： G11B27/107 ,  G11B5/5513 ,  G11B20/10 ,  G11B2020/10916

    摘要： A first data group in an access sequence is selected based on which data group in the data groups has a beginning closest to a current position of the tape medium. Those data groups located in specified regions of the tape medium are separated from other data groups located in alternative specified regions of the tape medium. The distance from the current position of the tape medium is set to be a logical distance value, determined by a calculation function, that is substituted for the physical distance value for the data groups that are located in the specified regions as compared with other data groups located in the alternative specified regions. A second data group in the access sequence is selected based on which remaining data group in the data groups has a beginning closest to an end of the first data group in the access sequence.

    摘要翻译： 基于数据组中的哪个数据组具有最接近磁带介质的当前位置的开始来选择访问序列中的第一数据组。 位于带介质的指定区域中的那些数据组与位于磁带介质的备选指定区域中的其他数据组分离。 与磁带介质的当前位置的距离被设置为由计算函数确定的逻辑距离值，其代替与其他数据组相比位于指定区域中的数据组的物理距离值 位于替代指定区域。 基于访问序列中数据组中哪个剩余数据组具有最接近第一数据组的结尾的开始来选择访问序列中的第二数据组。

    Tape Storage Device and Writing Method Therefor
    5.
    发明申请
    Tape Storage Device and Writing Method Therefor 有权
    磁带存储设备及其写入方法

    公开(公告)号：US20130067158A1

    公开(公告)日：2013-03-14

    申请号：US13698353

    申请日：2011-03-23

    申请人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Terue Watanabe

    发明人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Terue Watanabe

    IPC分类号： G06F12/02

    CPC分类号： G06F3/0682 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/0638 ,  G06F3/0643 ,  G06F3/0652 ,  G06F17/30174 ,  G11B20/1202 ,  G11B2220/956

    摘要： A mechanism is provided for tape writing of small transactions. A first file is written as a plurality of fixed-length data sets (DS), the DS number of the final DS in the plurality of DS is stored in memory as #N(DS#N) and the WP number as #M(WP#M), and the final first file and the second file in the DS following the final DS(DS#N, WP#M) containing the first file are packed and written in sequential DS units, and are stored as DS#N, DS#N+1, etc, and WP#M+1 in sequential order in DS containing the second file. The remaining first, second, or third file is packed and DS#N with WP#M is overwritten as DS#N with WP#M+2, and the remaining #N in the DS numbers of the second file and the third file in the subsequent DS are written as DS#N+1, N+2, etc. with WP#M+2, and the DS#N, #N+1, #N+2, etc. with WP+M+2 are stored.

    摘要翻译： 提供了一种用于磁带写入小事务的机制。 将第一文件写为多个固定长度数据集（DS），将多个DS中的最终DS的DS编号作为#N（DS＃N）存储在存储器中，将WP编号作为#M（ WP＃M），并且包含第一文件的最后DS（DS＃N，WP＃M）后的DS中的最终的第一个文件和第二个文件以连续的DS单元打包和写入，并且被存储为DS＃N ，DS＃N + 1等，WP＃M + 1按顺序排列在包含第二个文件的DS中。 剩余的第一，第二或第三文件被打包，具有WP＃M的DS＃N被覆盖为具有WP＃M + 2的DS＃N，并且第二文件的DS号码中的剩余#N和第 后续的DS用WP＃M + 2写入DS＃N + 1，N + 2等，WP + M + 2的DS＃N，＃N + 1，＃N + 2等 存储。

    Tape storage device and writing method therefor
    6.
    发明授权
    Tape storage device and writing method therefor 有权
    磁带存储装置及其写入方法

    公开(公告)号：US08972654B2

    公开(公告)日：2015-03-03

    申请号：US13698353

    申请日：2011-03-23

    申请人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Terue Watanabe

    发明人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Terue Watanabe

    IPC分类号： G06F12/00 ,  G06F3/06 ,  G11B20/12

    CPC分类号： G06F3/0682 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/0638 ,  G06F3/0643 ,  G06F3/0652 ,  G06F17/30174 ,  G11B20/1202 ,  G11B2220/956

    摘要： A mechanism is provided for tape writing of small transactions. A first file is written as a plurality of fixed-length data sets (DS), the DS number of the final DS in the plurality of DS is stored in memory as #N(DS#N) and the WP number as #M(WP#M), and the final first file and the second file in the DS following the final DS(DS#N, WP#M) containing the first file are packed and written in sequential DS units, and are stored as DS#N, DS#N+1, etc, and WP#M+1 in sequential order in DS containing the second file. The remaining first, second, or third file is packed and DS#N with WP#M is overwritten as DS#N with WP#M+2, and the remaining #N in the DS numbers of the second file and the third file in the subsequent DS are written as DS#N+1, N+2, etc. with WP#M+2, and the DS#N, #N+1, #N+2, etc. with WP+M+2 are stored.

    摘要翻译： 提供了一种用于磁带写入小事务的机制。 将第一文件写为多个固定长度数据集（DS），将多个DS中的最终DS的DS编号作为#N（DS＃N）存储在存储器中，将WP编号作为#M（ WP＃M），并且包含第一文件的最后DS（DS＃N，WP＃M）后的DS中的最终的第一个文件和第二个文件以连续的DS单元打包和写入，并且被存储为DS＃N ，DS＃N + 1等，WP＃M + 1按顺序排列在包含第二个文件的DS中。 剩余的第一，第二或第三文件被打包，具有WP＃M的DS＃N被覆盖为具有WP＃M + 2的DS＃N，并且第二文件的DS号码中的剩余#N和第 后续的DS用WP＃M + 2写入DS＃N + 1，N + 2等，WP + M + 2的DS＃N，＃N + 1，＃N + 2等 存储。

    Writing data to tape medium
    7.
    发明授权
    Writing data to tape medium 失效
    将数据写入磁带介质

    公开(公告)号：US08780474B2

    公开(公告)日：2014-07-15

    申请号：US13167943

    申请日：2011-06-24

    申请人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Tomoko Taketomi ,  Terue Watanabe

    发明人： Takamasa Hirata ,  Setsuko Masuda ,  Yuhko Mori ,  Yutaka Oishi ,  Tomoko Taketomi ,  Terue Watanabe

    IPC分类号： G11B5/09

    CPC分类号： G11B5/00813 ,  G11B20/10527 ,  G11B20/18 ,  G11B2020/10759 ,  G11B2220/90

    摘要： In a controller of a tape drive, a CM input-output unit recognizes a tape format; a tape variable acquisition unit acquires tape variables; a setting variable acquisition unit acquires setting variables; and a minimum number calculator calculates a minimum number m of sub datasets, which are to be written to a tape to secure resistance to burst error, by using the tape variables and setting variables. When a command processor receives a synchronization command, the buffer manager generates n sub datasets for storing data in the buffer. If n is smaller than m, m sub datasets are padded out and set as write data. If n is m or more, the n sub datasets are set as write data. Then, the channel input-output unit writes the write data to the tape.

    摘要翻译： 在磁带驱动器的控制器中，CM输入 - 输出单元识别磁带格式; 磁带变量获取单元获取磁带变量; 设置变量获取单元获取设置变量; 并且最小数量计算器通过使用磁带变量和设置变量来计算要写入磁带以确保电阻突发错误的子数据集的最小数量m。 当命令处理器接收到同步命令时，缓冲器管理器生成用于在缓冲器中存储数据的n个子数据集。 如果n小于m，则m个子数据集被填充并设置为写入数据。 如果n为m以上，则将n个子数据集设为写入数据。 然后，通道输入 - 输出单元将写数据写入磁带。

    APPARATUS AND METHOD FOR WRITING DATA ON A TAPE MEDIUM
    8.
    发明申请
    APPARATUS AND METHOD FOR WRITING DATA ON A TAPE MEDIUM 有权
    用于在带状介质上写入数据的装置和方法

    公开(公告)号：US20100033869A1

    公开(公告)日：2010-02-11

    申请号：US12534892

    申请日：2009-08-04

    申请人： Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

    发明人： Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

    IPC分类号： G11B5/55

    CPC分类号： G11B5/584

    摘要： An apparatus and method are disclosed for writing data accumulated in a buffer on a tape medium in such a way that overwriting is prevented. The apparatus comprises a write unit configured for writing first data in a first position extending over a first track and an area adjacent to the first track, writing second data in a second position extending over a second track and an area adjacent to the second track, and writing the first data and the second data in a third position extending over a third track and an area adjacent to the third track. Furthermore, the apparatus comprises a processing unit configured for preventing the first data written in the first position from being overwritten with the second data written in the second position or with the first data written in the third position.

    摘要翻译： 公开了一种用于将存储在缓冲器中的数据写入磁带介质上的装置和方法，以防止覆盖。 该装置包括：写入单元，被配置为将第一数据写入第一位置，该第一位置在第一轨道和与第一轨道相邻的区域上延伸;将第二数据写入第二位置，该第二位置延伸到第二轨道和邻近第二轨道的区域; 以及将第一数据和第二数据写入在第三轨道和与第三轨道相邻的区域上延伸的第三位置。 此外，该装置包括：处理单元，被配置为防止写入第一位置的第一数据被写入第二位置的第二数据或被写入第三位置的第一数据重写。

    Storage device, defect detection method and program for detecting defect in recording medium
    9.
    发明授权
    Storage device, defect detection method and program for detecting defect in recording medium 失效
    存储装置，缺陷检测方法和用于检测记录介质中缺陷的程序

    公开(公告)号：US07880993B2

    公开(公告)日：2011-02-01

    申请号：US12136084

    申请日：2008-06-10

    申请人： Setsuko Masuda ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Yutaka Oishi

    发明人： Setsuko Masuda ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Yutaka Oishi

    IPC分类号： G11B5/09

    CPC分类号： G11B20/1816 ,  G11B2220/90

    摘要： The present invention provides a technique for detecting a defect in a tape medium within a relatively short or narrow range. A tape defect detection device includes: a read unit for reading data from a tape medium; an error correction unit for performing error corrections for the data read by the read unit; a correction number counting unit for counting the number of the error corrections, made by the error correction unit, for each of multiple divided areas of the tape medium; a temporary storage unit for temporarily storing, for each of the areas, the number of the error corrections counted by the correction number counting unit; and a detection unit for detecting a defect in the tape medium, on the basis of a distribution of divided areas each having a larger number of error corrections than other divided areas on the tape medium.

    摘要翻译： 本发明提供了一种在相对较短或较窄范围内检测带介质中的缺陷的技术。 磁带缺陷检测装置包括：读取单元，用于从磁带介质读取数据; 纠错单元，用于对读取单元读取的数据进行纠错; 校正数计数单元，用于针对所述带介质的多个分割区域中的每一个，对由所述误差校正单元进行的误差校正次数进行计数; 临时存储单元，用于针对每个区域临时存储由所述校正数计数单元计数的所述错误校正的数量; 以及检测单元，用于根据磁带介质上的其他分割区域的误差校正次数分配的分布，检测带介质中的缺陷。

    Apparatus and method for writing data on a tape medium
    10.
    发明授权
    Apparatus and method for writing data on a tape medium 有权
    在磁带介质上写入数据的装置和方法

    公开(公告)号：US08130460B2

    公开(公告)日：2012-03-06

    申请号：US12534892

    申请日：2009-08-04

    申请人： Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

    发明人： Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

    IPC分类号： G11B19/04

    CPC分类号： G11B5/584

    摘要： An apparatus and method are disclosed for writing data accumulated in a buffer on a tape medium in such a way that overwriting is prevented. The apparatus comprises a write unit configured for writing first data in a first position extending over a first track and an area adjacent to the first track, writing second data in a second position extending over a second track and an area adjacent to the second track, and writing the first data and the second data in a third position extending over a third track and an area adjacent to the third track. Furthermore, the apparatus comprises a processing unit configured for preventing the first data written in the first position from being overwritten with the second data written in the second position or with the first data written in the third position.

    摘要翻译： 公开了一种用于将存储在缓冲器中的数据写入磁带介质上的装置和方法，以防止覆盖。 该装置包括：写入单元，被配置为将第一数据写入第一位置，该第一位置在第一轨道和与第一轨道相邻的区域上延伸;将第二数据写入第二位置，该第二位置延伸到第二轨道和邻近第二轨道的区域; 以及将第一数据和第二数据写入在第三轨道和与第三轨道相邻的区域上延伸的第三位置。 此外，该装置包括：处理单元，被配置为防止写入第一位置的第一数据被写入第二位置的第二数据或被写入第三位置的第一数据重写。