公开(公告)号：US09946591B2

公开(公告)日：2018-04-17

申请号：US15181092

申请日：2016-06-13

申请人： International Business Machines Corporation

发明人： Erika M. Dawson ,  David C. Reed ,  Max D. Smith ,  Joseph M. Swingler

IPC分类号： G11B27/36 ,  G11B5/09 ,  G06F11/07 ,  G11B20/00 ,  G11B5/008 ,  G11B20/18 ,  G11B15/20 ,  G06F3/06

CPC分类号： G06F11/073 ,  G06F3/0619 ,  G06F3/0653 ,  G06F3/0659 ,  G06F3/0682 ,  G11B5/00813 ,  G11B15/20 ,  G11B20/00702 ,  G11B20/18

摘要： An apparatus-implemented method according to one embodiment includes detecting an error while writing data to a tape volume, and repositioning the tape in response to detecting the error. Further, the method includes determining, after the repositioning, a current position of the tape, and determining, based on the current position, whether a rewrite of data associated with the error to the tape volume is allowed. A system according to one embodiment includes a processor and logic integrated with and/or executable by the processor. The logic is configured to cause the foregoing method to occur. A computer program product according to one embodiment includes a computer readable storage medium having program instructions embodied therewith, the program instructions readable and/or executable by a controller to cause the controller to perform the foregoing method.

公开(公告)号：US20160104506A1

公开(公告)日：2016-04-14

申请号：US14972046

申请日：2015-12-16

申请人： International Business Machines Corporation

发明人： Takashi Katagiri ,  Yuhko Mori ,  Yutaka Oishi

IPC分类号： G11B15/44

CPC分类号： G11B15/442 ,  G06F3/0613 ,  G06F3/0656 ,  G06F3/0682 ,  G06F2003/0691 ,  G11B5/00813 ,  G11B15/20 ,  G11B15/26 ,  G11B15/444 ,  G11B20/10009 ,  G11B20/10527 ,  G11B27/36 ,  G11B2020/10759 ,  G11B2220/90

摘要： An apparatus, computer readable medium device, and method for controlling transportation of a tape medium. A determination is made whether to execute a backhitch operation in response to writing a data set to tape from the buffer. If not, a determination is made whether a transaction size at which data is transferred from the buffer to the tape is less than a buffer size. If so, then a determination is made of a a new speed and whether a current speed is different from the determined new speed. If so, then a backhitch is initiated.

公开(公告)号：US20120229931A1

公开(公告)日：2012-09-13

申请号：US13510608

申请日：2010-09-28

申请人： Takashi Katagiri ,  Yuhko Mori ,  Yutaka Oishi

发明人： Takashi Katagiri ,  Yuhko Mori ,  Yutaka Oishi

IPC分类号： G11B15/46 ,  G11B5/008

CPC分类号： G11B15/442 ,  G06F3/0613 ,  G06F3/0656 ,  G06F3/0682 ,  G06F2003/0691 ,  G11B5/00813 ,  G11B15/20 ,  G11B15/26 ,  G11B15/444 ,  G11B20/10009 ,  G11B20/10527 ,  G11B27/36 ,  G11B2020/10759 ,  G11B2220/90

摘要： High performance is obtained without preventing achievement of a target read data rate.In a controller 16 of a tape drive, a command processing unit 41 receives a synchronization command, and a buffer management unit 42 passes data in a buffer to a channel input-output unit 43. Then, upon completion of writing the data to the tape, a backhitch determination unit 44 determines whether or not to execute backhitch. If it is determined that backhitch should be skipped, the speed determination unit 46 determines a tape speed that minimizes a sum of a time required to write data without backhitch within a range where a data amount of a monitor target is to be written in order to achieve a target read data rate, and a time required to write data with backhitch within the range. Then, an operation signal output unit 49 issues an instruction to change the tape speed to the determined tape speed after execution of backhitch.

摘要翻译： 在不防止实现目标读取数据速率的情况下获得高性能。 在磁带驱动器的控制器16中，命令处理单元41接收同步命令，并且缓冲器管理单元42将缓冲器中的数据传送到通道输入 - 输出单元43.然后，在将数据写入磁带 后退确定单元44确定是否执行回传。 如果确定应该跳过后退，则速度确定单元46确定在将要写入数据量的监视对象的数据量写入的范围内将数据写入不需要后退所需的时间的总和最小化的带速度，以便 实现目标读取数据速率，以及在该范围内写回数据的数据所需的时间。 然后，操作信号输出单元49在执行后退之后发出将磁带速度改变到所确定的磁带速度的指令。

公开(公告)号：US20070088911A1

公开(公告)日：2007-04-19

申请号：US11250084

申请日：2005-10-13

申请人： Paul Greco

发明人： Paul Greco

IPC分类号： G06F13/00

CPC分类号： G11B15/20

摘要： A method for a tape storage system to adaptively handle Space commands sent from a host computer system is disclosed. In response to a Space command from the host computer system, a determination is made as to whether or not the tape storage system is in a Read mode. If the tape storage system is in a Read mode, the estimated cost of performing a special read operation for the Space command is compared with the estimated cost of performing a normal space operation for the Space command. If the estimated cost for performing a special read operation is lower than the estimated cost for performing a normal space operation, then a special read operation is performed. But if estimated cost for performing a special read operation is higher than the estimated cost for performing a normal space operation, then a normal space operation is performed.

摘要翻译： 公开了一种用于自适应地处理从主计算机系统发送的空间命令的磁带存储系统的方法。 响应于来自主计算机系统的Space命令，确定磁带存储系统是否处于读取模式。 如果磁带存储系统处于读取模式，则对空间命令执行特殊读取操作的估计成本与对空间命令执行正常空间操作的估计成本进行比较。 如果执行特殊读取操作的估计成本低于用于执行正常空间操作的估计成本，则执行特殊读取操作。 但是，如果执行特殊读取操作的估计成本高于执行正常空间操作的估计成本，则执行正常空间操作。

公开(公告)号：US20050201015A1

公开(公告)日：2005-09-15

申请号：US11123047

申请日：2005-05-06

申请人： Nigel Rushton ,  Laura Sierra ,  Paul Bartlett

发明人： Nigel Rushton ,  Laura Sierra ,  Paul Bartlett

IPC分类号： G11B5/00 ,  G11B5/008 ,  G11B5/012 ,  G11B5/49 ,  G11B7/0045 ,  G11B7/08 ,  G11B11/105 ,  G11B15/087 ,  G11B15/12 ,  G11B15/20 ,  G11B20/10 ,  G11B20/18 ,  G11B5/48

CPC分类号： G11B5/00813 ,  G11B5/012 ,  G11B5/4969 ,  G11B7/00458 ,  G11B7/08 ,  G11B11/10556 ,  G11B11/10595 ,  G11B15/087 ,  G11B15/125 ,  G11B15/20 ,  G11B20/10 ,  G11B20/18 ,  G11B2005/001

摘要： A data transfer device adapted to transfer data from a data storage medium having at least one data storage element the data transfer device comprising a head block having first and second transfer elements. The first and second transfer elements arranged such that, when, in use, the data storage medium moves past the first and second transfer elements said at least one data storage element is aligned with both of said first and second data transfer elements. The first data transfer element is arranged to read data from a portion of said at least one data storage element at a different time to the second data transfer element being arranged to read data from said portion of said at least one data storage element.

摘要翻译： 一种数据传输装置，适于从具有至少一个数据存储元件的数据存储介质传送数据，所述数据传输装置包括具有第一和第二传送元件的头块。 第一和第二传送元件布置成使得当使用中数据存储介质移动经过第一和第二传送元件时，所述至少一个数据存储元件与所述第一和第二数据传送元件两者对准。 第一数据传送元件被布置成在不同的时间从所述至少一个数据存储元件的一部分读取数据，以将第二数据传送元件布置成从所述至少一个数据存储元件的所述部分读取数据。

公开(公告)号：US06603626B1

公开(公告)日：2003-08-05

申请号：US09465266

申请日：1999-12-17

申请人： Yoshihisa Takayama

发明人： Yoshihisa Takayama

IPC分类号： G11B1546

CPC分类号： G11B15/52 ,  G11B15/1875 ,  G11B15/20 ,  G11B15/48 ,  G11B15/54

摘要： A tape driving apparatus and a recording medium, capable of detecting a target running amount during High Speed Search. Wherein upon a search command, a system controller sets a target position based on a specified position specified by this search command. Then, the system controller calculates the target running amount from the current position to the target position based on a spanned distance and calculates the target count value as the running amount corresponding to the calculated distance. Then, the system controller runs the magnetic tape while counting the reel FG pulses and shifts to High Speed Search. Starting High Speed Search, the system controller judges whether or not the count value of the reel FG pulses has reached the target count value. When it judges that the count value has not reached the target count value, it considers that the target position has not been reached yet and continues High Speed Search. When, it judges that the count value has reached the target count value, it shifts to Normal Search. After shifting to Normal Search, it judges whether the specified position has been reached or not based on information read out of the magnetic tape and when it judges that the specified position has not being reached yet, it continues Normal Search. When it judges that the specified position has been reached, it ends the search.

摘要翻译： 一种能够在高速搜索期间检测目标运行量的磁带驱动装置和记录介质。 其中，在搜索命令中，系统控制器基于由该搜索命令指定的指定位置来设定目标位置。 然后，系统控制器基于跨越距离计算从当前位置到目标位置的目标运行量，并将目标计数值计算为与计算出的距离相对应的运行量。 然后，系统控制器在计数卷轴FG脉冲并转移到高速搜索时运行磁带。 开始高速搜索时，系统控制器判断卷轴FG脉冲的计数值是否达到目标计数值。 当判断计数值尚未达到目标计数值时，认为目标位置尚未到达，并继续高速搜索。 当它判断出计数值已经达到目标计数值时，它转到正常搜索。 在切换到正常搜索后，根据从磁带读出的信息判断指定的位置是否达到，当判断指定的位置尚未到达时，继续正常搜索。 当它判断已达到指定的位置时，结束搜索。

公开(公告)号：US20020012524A1

公开(公告)日：2002-01-31

申请号：US09916750

申请日：2001-07-27

发明人： Kwong Heng Kwok

IPC分类号： H04N005/783

CPC分类号： G11B15/295 ,  G11B15/1875 ,  G11B15/20 ,  G11B15/4673 ,  G11B15/48

摘要： In a video tape recorder (VTR), the capstan draws the tape from which the video signal is reproduced in a forward direction. Following steps are proposed to control the capstan: applying a torque to the capstan in a backward direction for a first predetermined period of time; applying a torque to the capstan in the forward direction for a second predetermined period of time; nullifying the motor current. This is particularly convenient for slow-motion and still-picture reproduction modes.

摘要翻译： 在录像机（VTR）中，主导线从正向方向拉出视频信号从其再现的磁带。 提出以下步骤来控制主导轴：在向前的方向上在主轴上施加扭矩达第一预定时间段; 在前进方向上向绞盘施加扭矩达预定的第二时间段; 使电机电流无效。 这对于慢动作和静止图像再现模式特别方便。

公开(公告)号：US20010012169A1

公开(公告)日：2001-08-09

申请号：US08917329

申请日：1997-08-25

申请人： FUJITSU LTD.

发明人： MASAYOSHI KOBAYASHI ,  KEISUKE HOSHINO ,  MASARU OHSHITA ,  AKIRA TAKANO ,  MAKOTO SASAKI ,  MAKOTO MATSUDA ,  TOSHIHIKO FUJII

IPC分类号： G11B015/18 ,  G11B015/48 ,  G11B019/02

CPC分类号： G11B15/48 ,  G11B15/20 ,  G11B15/62 ,  G11B15/67 ,  G11B33/144

摘要： Disclosed herein is a magnetic tape unit having a magnetic head for reading and writing data from and onto a magnetic tape. The magnetic tape is traveled in contact with the magnetic head during a read/write operation of the magnetic head. During a rest period where the read/write operation of the magnetic head is not performed, a reciprocating motion of the magnetic tape by a small distance is performed with a predetermined period. A temperature in the vicinity of the magnetic head is detected by a temperature sensor. The predetermined period is changed according to the temperature detected by the temperature sensor. Accordingly, the adhesion of the magnetic tape to the magnetic head can be well prevented irrespective of the temperature inside the tape unit.

摘要翻译： 这里公开了一种磁带单元，其具有用于从磁带读取和写入数据的磁头。 在磁头读/写操作期间磁带与磁头接触。 在不执行磁头的读/写操作的休息期间，以预定的周期执行磁带的一定距离的往复运动。 通过温度传感器检测磁头附近的温度。 预定时间根据由温度传感器检测到的温度而改变。 因此，与磁带单元内的温度无关地，可以很好地防止磁带对磁头的粘附。

公开(公告)号：US06204987B1

公开(公告)日：2001-03-20

申请号：US09103769

申请日：1998-06-24

申请人： Ole Christian Dahlerud

发明人： Ole Christian Dahlerud

IPC分类号： G11B1544

CPC分类号： G11B15/20 ,  G11B15/06 ,  G11B15/08 ,  G11B23/34 ,  G11B27/24 ,  G11B2220/90 ,  G11B2220/95

摘要： In a method for writing data on a data carrier tape, a central region of the tape is positioned adjacent a data recording head, data are supplied to the data recording head, and data are transferred from the data recording head to the tape, beginning at the center region of the tape, while moving the tape along a longitudinal direction of the tape. The tape transport direction can be alternatingly reversed at the opposite ends of the tape so data are recorded successively on adjacent data recording tracks on the tape, with data transfer being inhibited each time the center region of the tape passes by the data recording head. A data carrier tape for implementing the method has a hole pattern in the central region of the tape, which identifies the central region of the tape to allow positioning of the tape at the central region, and to allow recognition of the central region for inhibiting data transfer when the central region of the tape is adjacent the data recording head.

摘要翻译： 在用于在数据载带上写入数据的方法中，磁带的中心区域位于数据记录头附近，数据被提供给数据记录头，数据从数据记录头传送到磁带，从 在带的中心区域沿着带的纵向方向移动带。 磁带传送方向可以在磁带的相对端交替地反转，因此数据被连续记录在磁带上的相邻数据记录磁道上，每当磁带的中心区域通过数据记录头时，数据传输被禁止。 用于实现该方法的数据载体带在带的中心区域具有孔图案，其识别带的中心区域以允许带在中心区域的定位，并允许识别用于禁止数据的中心区域 当磁带的中心区域与数据记录头相邻时传送。

公开(公告)号：US6151440A

公开(公告)日：2000-11-21

申请号：US838484

申请日：1997-04-07

申请人： Josef Inschlag

发明人： Josef Inschlag

IPC分类号： G11B5/008 ,  G11B15/087 ,  G11B15/18 ,  G11B15/20 ,  G11B15/467 ,  G11B15/48 ,  G11B15/52 ,  H04N5/7826 ,  H04N5/915 ,  H04N5/91

CPC分类号： H04N5/78263 ,  G11B15/087 ,  G11B15/1875 ,  G11B15/20 ,  G11B15/48 ,  G11B15/52 ,  G11B5/0086 ,  H04N5/915

摘要： In an arrangement (1) for the segment-by-segment recording of information signals by at least one rotationally drivable magnetic head (4, 5) in inclined recording tracks (2) on a magnetic tape (3) which can be driven intermittently by a tape drive device (53) while the recording mode is active, the stationary magnetic tape (3) is scanned along an inclined reproducing track (75) which partly overlaps the inclined recording track last scanned (2.sub.n) and the information signal segment (field signal) recorded in the inclined recording track (2.sub.n) is then reproduced. The arrangement includes structure for determining the instantaneous relative position of the inclined reproducing track (75), in the longitudinal direction of the tape, with respect to the inclined recording track (2.sub.n), which is partly overlapped by the inclined reproducing track (75), and for generating position information (LI). The arrangement also includes structure for controlling, in dependence upon this position information (LI), the tape drive device (53) during a subsequent recording cycle.

摘要翻译： 在用于通过磁带（3）上的倾斜记录轨道（2）中的至少一个可旋转驱动的磁头（4,5）对信息信号进行逐段记录的装置（1）中，该记录轨道可以间歇地由 磁带驱动装置（53），当记录模式有效时，固定磁带（3）沿着与最后扫描的倾斜记录磁道（2n）和信息信号段（场）部分重叠的倾斜再现磁道（75）被扫描 信号）被记录在倾斜记录磁道（2n）中。 该装置包括用于确定在带的纵向方向上的倾斜再现轨道（75）相对于倾斜再现轨道（75）部分重叠的倾斜记录轨道（2n）的瞬时相对位置的结构， ，并且用于生成位置信息（LI）。 该装置还包括根据该位置信息（LI）在随后的记录周期期间控制带驱动装置（53）的结构。