公开(公告)号：US08867160B2

公开(公告)日：2014-10-21

申请号：US13570749

申请日：2012-08-09

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

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

IPC: G11B15/18

CPC classification number: G11B27/107 ,  G11B5/5513 ,  G11B20/10 ,  G11B2020/10916

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08693129B2

公开(公告)日：2014-04-08

申请号：US13458828

申请日：2012-04-27

Applicant: Takashi Katagiri ,  Hirokazu Nakayama ,  Yutaka Oishi

Inventor： Takashi Katagiri ,  Hirokazu Nakayama ,  Yutaka Oishi

IPC: G11B15/46

CPC classification number: G11B15/46 ,  G11B15/1875 ,  G11B20/10527 ,  G11B2020/10703 ,  G11B2020/10981 ,  G11B2220/90

Abstract: A tape drive capable of switching the transport speed of a tape medium among multilevel speeds calculates a data transfer rate from/to a host device, and selects an adjustment mode of the transport speed of the tape medium from a constant speed mode and a speed switch mode according to the calculated data transfer rate. The tape drive in the speed switch mode, pauses a data write or read operation to switch the transport speed of the tape medium while data is written at a first transport speed and when an available capacity of a buffer memory reaches a data volume to be received from the host device during switching of the transport speed and is read out at the first transport speed and when a data volume of a buffer memory reaches a data volume to be transmitted to the host device during switching of the transport speed.

Abstract translation: 能够切换多层速度的带介质的传送速度的磁带驱动器计算从主装置的数据传送速率，并从恒速模式和速度切换中选择磁带介质的传送速度的调整模式 模式根据计算的数据传输速率。 磁带驱动器处于速度切换模式时，暂停数据写入或读取操作以切换磁带介质的传输速度，同时以第一传输速度写入数据，并且当缓冲存储器的可用容量达到要接收的数据量时 在传输速度的切换期间从主机设备读取并以第一传输速度读出，并且当缓冲存储器的数据量到达传输速度转换期间传送给主机设备的数据量时。

公开(公告)号：US08654476B2

公开(公告)日：2014-02-18

申请号：US12976691

申请日：2010-12-22

Applicant: Takashi Katagiri ,  Yutaka Oishi ,  Yuhko Mori ,  Hirokazu Nakayama

Inventor： Takashi Katagiri ,  Yutaka Oishi ,  Yuhko Mori ,  Hirokazu Nakayama

IPC: G11B15/18 ,  G11B15/46 ,  G11B5/55

CPC classification number: G11B15/026 ,  G06F2213/0038 ,  G11B15/20 ,  G11B20/10 ,  G11B2020/10916 ,  G11B2220/956

Abstract: Methods, computer systems, and computer program products are provided for operating a tape drive comprising a tape medium with a plurality of record groups stored thereon. Access sequence for the plurality of record groups is provided. The tape medium is positioned for reading a record group in the access sequence before a seek command for the record group in the access sequence is received.

Abstract translation: 提供了方法，计算机系统和计算机程序产品，用于操作包括其上存储有多个记录组的带介质的磁带驱动器。 提供了多个记录组的访问顺序。 在接收到接入序列中的记录组的寻道命令之前，磁带介质被定位用于在访问序列中读取记录组。

公开(公告)号：US08625227B2

公开(公告)日：2014-01-07

申请号：US13002894

申请日：2009-07-03

Applicant: Takashi Katagiri ,  Hirokazu Nakayama ,  Yutaka Oishi

Inventor： Takashi Katagiri ,  Hirokazu Nakayama ,  Yutaka Oishi

IPC: G11B15/46

CPC classification number: G11B15/46 ,  G11B15/1875 ,  G11B20/10527 ,  G11B2020/10703 ,  G11B2020/10981 ,  G11B2220/90

Abstract: A tape drive capable of switching the transport speed of a tape medium among multilevel speeds calculates a data transfer rate from/to a host device, and selects an adjustment mode of the transport speed of the tape medium from a constant speed mode and a speed switch mode according to the calculated data transfer rate. The tape drive in the speed switch mode, pauses a data write or read operation to switch the transport speed of the tape medium while data is written at a first transport speed and when an available capacity of a buffer memory reaches a data volume to be received from the host device during switching of the transport speed and is read out at the first transport speed and when a data volume of a buffer memory reaches a data volume to be transmitted to the host device during switching of the transport speed.

公开(公告)号：US08537490B2

公开(公告)日：2013-09-17

申请号：US13523654

申请日：2012-06-14

Applicant: Takashi Katagiri ,  Setsuko Masuda ,  Yuhko Mori ,  Hirokazu Nakayama ,  Yutaka Oishi

Inventor： Takashi Katagiri ,  Setsuko Masuda ,  Yuhko Mori ,  Hirokazu Nakayama ,  Yutaka Oishi

IPC: G11B5/55 ,  G11B15/18 ,  G11B15/48

CPC classification number: G06F3/0641 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/0682 ,  G06F3/0686 ,  G11B5/5508 ,  G11B5/5513 ,  G11B27/107 ,  G11B2020/10916 ,  G11B2220/90

Abstract: For determining an access sequence of a plurality of data groups stored on a tape medium, a first data group in the access sequence is selected based on which data group in the plurality of data groups has a beginning closest to a current position of the tape medium. A second data group in the access sequence is selected based on which remaining data group in the plurality of data groups has a beginning closest to an end of the first data group in the access sequence.

Abstract translation: 为了确定存储在磁带介质上的多个数据组的访问顺序，基于多个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 。 基于访问序列中的多个数据组中的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。

公开(公告)号：US08526136B2

公开(公告)日：2013-09-03

申请号：US12970631

申请日：2010-12-16

Applicant: Takashi Katagiri ,  Setsuko Masuda ,  Yuhko Mori ,  Hirokazu Nakayama ,  Yutaka Oishi

Inventor： Takashi Katagiri ,  Setsuko Masuda ,  Yuhko Mori ,  Hirokazu Nakayama ,  Yutaka Oishi

IPC: G11B5/55 ,  G11B15/18 ,  G11B15/48

CPC classification number: G06F3/0641 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/0682 ,  G06F3/0686 ,  G11B5/5508 ,  G11B5/5513 ,  G11B27/107 ,  G11B2020/10916 ,  G11B2220/90

Abstract: For determining an access sequence of a plurality of data groups stored on a tape medium, a first data group in the access sequence is selected based on which data group in the plurality of data groups has a beginning closest to a current position of the tape medium. A second data group in the access sequence is selected based on which remaining data group in the plurality of data groups has a beginning closest to an end of the first data group in the access sequence.

公开(公告)号：US08289640B2

公开(公告)日：2012-10-16

申请号：US12189613

申请日：2008-08-11

Applicant: Scott Milton Fry ,  Ernest Stewart Gale ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Pamela Ruth Nylander-Hill

Inventor： Scott Milton Fry ,  Ernest Stewart Gale ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Pamela Ruth Nylander-Hill

IPC: G11B27/36

CPC classification number: G11B27/36 ,  G11B2220/90

Abstract: A method according to one embodiment includes monitoring a data transfer operation for detecting temporary errors; determining whether an error burst has occurred based on the monitoring; if an error burst has occurred, altering a condition of the data transfer operation; monitoring the data transfer operation having the altered condition for detecting temporary errors; determining whether another error burst has occurred based on the monitoring of the data transfer operation having the altered condition; and if another error burst has occurred; altering another condition of the data transfer operation. Additional systems and methods are also presented.

Abstract translation: 根据一个实施例的方法包括监视用于检测临时错误的数据传送操作; 基于所述监视来确定是否发生错误突发; 如果发生错误突发，则改变数据传送操作的状态; 监视具有用于检测临时错误的改变条件的数据传送操作; 基于对具有改变的条件的数据传送操作的监视来确定是否发生了另一个错误突发; 并且如果发生另一个错误突发; 改变数据传输操作的另一个条件。 还介绍了其他系统和方法。

公开(公告)号：US08130460B2

公开(公告)日：2012-03-06

申请号：US12534892

申请日：2009-08-04

Applicant: Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

Inventor： Yutaka Oishi ,  Hirokazu Nakayama ,  Setsuko Masuda ,  Kenji Nakamura

IPC: G11B19/04

CPC classification number: G11B5/584

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07511915B2

公开(公告)日：2009-03-31

申请号：US11734231

申请日：2007-04-11

Applicant: Paul Merrill Greco ,  Glen Alan Jaquette ,  James Mitchell Karp ,  Hirokazu Nakayama

Inventor： Paul Merrill Greco ,  Glen Alan Jaquette ,  James Mitchell Karp ,  Hirokazu Nakayama

IPC: G11B21/02 ,  G11B5/09

CPC classification number: G11B5/00817 ,  G11B20/10527 ,  G11B20/1201 ,  G11B27/3027 ,  G11B2020/10675 ,  G11B2020/1074 ,  G11B2220/90 ,  G11B2220/95

Abstract: Provided are a method, system, and article of manufacture for writing data in a tape medium having wraps. A layout of the tape is provided including at least one segment within a full length of first set of wraps for writing user data and at least one segment within a full length of a second set of wraps for writing a work copy of the user data. User data is received to write to the tape medium. Detection is made of whether data writing is occurring in a specified write mode. A work copy is written to available segments in the second set of wraps not having user data in response to the data writing occurring in the specified write mode.

Abstract translation: 提供了一种用于在具有包裹的带介质中写入数据的方法，系统和制品。 提供带的布局，其包括用于写入用户数据的第一组包裹的全长的至少一个片段和用于写入用户数据的工作副本的第二组包裹的全长内的至少一个片段。 接收用户数据以写入磁带介质。 数据写入是否以指定的写入模式进行检测。 工作副本被写入第二组不具有用户数据的回卷中的可用段，以响应以指定的写入模式发生的数据写入。

公开(公告)号：US20080310043A1

公开(公告)日：2008-12-18

申请号：US12136084

申请日：2008-06-10

Applicant: Setsuko Masuda ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Yutaka O. Ishi

Inventor： Setsuko Masuda ,  Kenji Nakamura ,  Hirokazu Nakayama ,  Yutaka O. Ishi

IPC: G11B5/09

CPC classification number: G11B20/1816 ,  G11B2220/90

Abstract: 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.

Abstract translation: 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。