公开(公告)号：US08054569B2

公开(公告)日：2011-11-08

申请号：US12505442

申请日：2009-07-17

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B5/09 ,  G11B5/584

CPC分类号： G11B5/584

摘要： A method and apparatus is presented to determine a lateral position of a read/write head relative to a sequential information storage medium having a servo signal encoded therein and moving adjacent to the read/write head, where the servo signal comprises a plurality of pulses. The method includes detecting the servo signal using the read/write head and calculating a timing interval between each of the pulses using a clock rate of a clock signal. The clock rate is then adjusted based upon the velocity of the sequential information storage medium.

摘要翻译： 提供了一种方法和装置，用于确定读/写头相对于其中编码有伺服信号的顺序信息存储介质的横向位置，并且与读/写头相邻移动，其中伺服信号包括多个脉冲。 该方法包括使用读/写头检测伺服信号，并使用时钟信号的时钟速率计算每个脉冲之间的定时间隔。 然后基于顺序信息存储介质的速度来调整时钟速率。

公开(公告)号：US07948706B2

公开(公告)日：2011-05-24

申请号：US12482312

申请日：2009-06-10

申请人： Steven Ross Bentley ,  Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Keisuke Tanaka

发明人： Steven Ross Bentley ,  Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Keisuke Tanaka

IPC分类号： G11B20/20

CPC分类号： G11B20/10009 ,  G11B5/0083 ,  G11B5/584 ,  G11B20/20 ,  G11B2020/1281 ,  G11B2020/1287 ,  G11B2220/93

摘要： A method to adjust the orientation of a read head comprising a first read element and a second read element, wherein the first read element and the second read element are separated by a distance, wherein the method moves a sequential information storage medium adjacent to the read head, determines a skew angle for the sequential information storage medium with respect to the read head using the first read element and the second read element, and encodes that skew angle in a computer readable medium.

摘要翻译： 一种用于调整包括第一读取元件和第二读取元件的读取头的取向的方法，其中所述第一读取元件和所述第二读取元件被分开一定距离，其中所述方法移动与所述读取元件相邻的顺序信息存储介质 头部使用第一读取元件和第二读取元件确定顺序信息存储介质相对于读取头的歪斜角度，并将该歪斜角度编码在计算机可读介质中。

公开(公告)号：US07920356B2

公开(公告)日：2011-04-05

申请号：US12024125

申请日：2008-02-01

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A method and a system are provided for writing a plurality of servo bands on magnetic tape. The magnetic tape is moved longitudinally relative to at least one servo write head. The servo write head is positioned to write a plurality of parallel longitudinal servo bands. The plurality of servo bands comprise odd servo bands and even servo bands, and each of the odd servo bands lie between the each of the even servo bands. The at least one servo write head is operated to write the plurality of parallel longitudinal servo bands on the magnetic tape such that each of the plurality of servo bands comprise a plurality of frames, wherein each frame comprises a plurality of bursts of transition stripes, and each burst has a first transition stripe. The first transition stripe of each burst of each the odd servo band is longitudinally shifted from the first transition stripe of each burst of each even servo band by a substantially equal distance, D, such that servo information of the odd servo bands is interleaved with the servo information from the even servo bands.

摘要翻译： 提供了一种在磁带上写入多个伺服带的方法和系统。 磁带相对于至少一个伺服写头纵向移动。 伺服写入头被定位成写入多个平行的纵向伺服带。 多个伺服频带包括奇数伺服频带和偶数伺服频带，并且每个奇数伺服频带位于每个偶数伺服频带之间。 操作至少一个伺服写入头以将多个平行纵向伺服频带写入磁带上，使得多个伺服频带中的每一个包括多个帧，其中每个帧包括多个过渡条纹脉冲串，以及 每个突发都有一个第一个过渡条纹。 每个奇数伺服频带的每个脉冲串的第一个转移条纹从每个偶数伺服频带的每个脉冲串的第一转移条带纵向移位大致相等的距离D，使得奇数伺服带的伺服信息与 来自偶数伺服带的伺服信息。

公开(公告)号：US20090190244A1

公开(公告)日：2009-07-30

申请号：US12022330

申请日：2008-01-30

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B27/36

CPC分类号： G11B15/54

摘要： An apparatus, system, and method are disclosed for dynamic tape stick and tape break detection. A first counter increments a first count and resets a second count in response to a sensor pulse from a first sensor of a first tape servo. A second counter increments the second count and resets the first count in response to a sensor pulse from a second sensor of a second tape servo. A detection module detects either the first count or the second count exceeding an error threshold.

摘要翻译： 公开了用于动态胶带和胶带断裂检测的装置，系统和方法。 第一计数器增加第一计数并且响应于来自第一磁带伺服器的第一传感器的传感器脉冲重置第二计数。 第二计数器增加第二计数并且响应于来自第二磁带伺服器的第二传感器的传感器脉冲重置第一计数。 检测模块检测到超过错误阈值的第一计数或第二计数。

公开(公告)号：US07364106B2

公开(公告)日：2008-04-29

申请号：US11674615

申请日：2007-02-13

申请人： Nhan Xuan Bui ,  Junichi Fukuda ,  Randy Clark Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Junichi Fukuda ,  Randy Clark Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B15/18

CPC分类号： G11B15/093

摘要： Disclosed are a system, a method, and an article of manufacture to provide for the detection and compensation of tape breakage in a tape drive. The invention operates by simultaneously monitoring the tape reel rotation direction and the ratio of rotation between the tape reels. If the rotation direction is not the same for both reels, then tape breakage is indicated and reel rotation ceases. Tape breakage is also detected if the tape reel angular rotation ratio between the supply and take up reels is not within a specified tape reel ratio range. The tape reel angular rotation ratio is detected by simultaneously measuring the angular rotation of each tape reel in a specified time period and then calculating the ratio. The present invention detects the tape reel angular rotation ratio and if tape reel angular rotation ratio is outside of the specified tape reel ratio range, tape breakage is indicated and reel rotation ceases.

摘要翻译： 公开了一种用于提供磁带驱动器中的磁带破损的检测和补偿的系统，方法和制品。 本发明通过同时监测磁带卷轴的旋转方向和磁带盘之间的旋转比来操作。 如果两个卷轴的旋转方向不一致，则表示带子断裂，并且卷轴旋转停止。 如果供纸卷取卷轴之间的磁带卷轴角度旋转比不在指定的磁带卷盘比范围内，则也会检测到磁带断线。 通过在规定的时间段内同时测量每个磁带卷轴的角度旋转，然后计算该比率来检测磁带卷轴角度旋转比。 本发明检测磁带卷轴的角度旋转比，如果磁带卷轴角度旋转比在指定的磁带卷盘比例范围之外，则表示磁带破损并且卷轴旋转停止。

公开(公告)号：US06943974B2

公开(公告)日：2005-09-13

申请号：US10689263

申请日：2003-10-20

申请人： Tomoaki Kimura ,  Satoshi Tohji ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Kenji Nakamura

发明人： Tomoaki Kimura ,  Satoshi Tohji ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Kenji Nakamura

IPC分类号： G06F3/06 ,  G11B5/09 ,  G11B15/00 ,  G11B15/02 ,  G11B15/04 ,  G11B15/16 ,  G11B15/20 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B15/026 ,  G11B15/005 ,  G11B15/04 ,  G11B15/16 ,  G11B15/20 ,  G11B20/1217 ,  G11B20/18

摘要： A method and system for rewriting data on a tape when an error occurs during an initial write operation. When the initial write error occurs, the data is rewritten at a location that is a pre-defined block gap distance from the last valid write location on the tape. By measuring the length of the pre-defined block gap distance, the cause or causes of the write error or errors are known. Thus, the pre-defined block gap not only ensures that the data is not re-written in a no-write zone of the tape, due to the zone known to be error prone, but a historical record of past write errors is logged based on the length of the block gaps.

摘要翻译： 一种用于在初始写入操作期间发生错误时在磁带上重写数据的方法和系统。 当发生初始写入错误时，数据被重写在与磁带上最后一个有效写入位置的预定义块间隙距离的位置。 通过测量预定义的块间隙距离的长度，已知写入错误或错误的原因或原因。 因此，预定义的块间隙不仅确保了数据不被重新写入磁带的无写入区域，因为已知该区域是容易出错的，而是记录了过去的写入错误的历史记录 在块间隙的长度上。

公开(公告)号：US06937413B2

公开(公告)日：2005-08-30

申请号：US10638080

申请日：2003-08-08

申请人： Nhan Xuan Bui ,  James Howard Eaton ,  Junichi Fukuda ,  Glen Alan Jaquette ,  Eiji Ogura ,  Mark Allan Taylor ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  James Howard Eaton ,  Junichi Fukuda ,  Glen Alan Jaquette ,  Eiji Ogura ,  Mark Allan Taylor ,  Kazuhiro Tsuruta

IPC分类号： G11B5/008 ,  G11B5/584 ,  G11B5/78 ,  G11B5/09

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： In magnetic tape having separate longitudinal servo bands of servo information with superimposed data information, the separate servo bands have selected different superimposed data information, to identify the separate servo bands for independent addressability. The servo information comprises non-parallel laterally extending transitions to indicate lateral positioning, and the selected different superimposed data information may comprise a lack thereof in portion(s) of the servo bands. Where the superimposed data information is longitudinal position information of the tape, the selected different superimposed data information may comprise different longitudinal position information of one or more servo band(s). The selected different superimposed data information may comprise a band identifier in the superimposed data information of one or more of the servo bands.

摘要翻译： 在具有具有叠加数据信息的伺服信息的单独的纵向伺服带的磁带中，分离的伺服带已经选择了不同的叠加数据信息，以识别用于独立寻址能力的单独的伺服带。 伺服信息包括非平行横向延伸的转换以指示横向定位，并且所选择的不同叠加数据信息可能包括在伺服带的一部分中的缺乏。 在叠加数据信息是磁带的纵向位置信息的情况下，所选择的不同叠加数据信息可以包括一个或多个伺服带的不同纵向位置信息。 所选择的不同的叠加数据信息可以包括一个或多个伺服带的叠加数据信息中的频带标识符。

公开(公告)号：US08405926B2

公开(公告)日：2013-03-26

申请号：US12842938

申请日：2010-07-23

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Randy Clark Inch ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Randy Clark Inch ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B15/52 ,  G11B15/46

CPC分类号： G11B15/32 ,  G11B15/46 ,  G11B15/52

摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.

摘要翻译： 根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。 在一个实施例中，提供了一种用于操作磁带驱动器的方法。 磁带驱动器包括多个DC电动机，并且每个DC电动机具有多个霍尔传感器。 直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度 的感测二次速度信号和三次速度。 该方法包括检测主速度位置信息是否可用。 响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。 响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。 当与磁带速度相关的项的绝对值小于预定值时，采用二次速度信号。 当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。

公开(公告)号：US20120019953A1

公开(公告)日：2012-01-26

申请号：US12842938

申请日：2010-07-23

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Randy Clark Inch ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Randy Clark Inch ,  Shuhei Nadehara ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B19/02

CPC分类号： G11B15/32 ,  G11B15/46 ,  G11B15/52

摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.

摘要翻译： 根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。 在一个实施例中，提供了一种用于操作磁带驱动器的方法。 磁带驱动器包括多个DC电动机，并且每个DC电动机具有多个霍尔传感器。 直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度 的感测二次速度信号和三次速度。 该方法包括检测主速度位置信息是否可用。 响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。 响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。 当与磁带速度相关的项的绝对值小于预定值时，采用二次速度信号。 当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。

公开(公告)号：US07903368B2

公开(公告)日：2011-03-08

申请号：US12024127

申请日：2008-02-01

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A magnetic tape cartridge including magnetic tape with servo information is provided. The servo information comprises a plurality of parallel longitudinal servo bands that lie between a plurality of longitudinal data bands. The plurality of servo bands include odd servo bands and even servo bands, wherein each of the odd servo bands lie between each of the even servo bands. Each of the plurality servo bands include a plurality of frames, wherein each frame includes a plurality of bursts of transition stripes, and each burst having a first transition stripe. The first transition stripe of each burst of each the odd servo band is longitudinally shifted from the first transition stripe of each burst of each even servo band by a substantially equal distance, D, such that servo information of the odd servo bands is interleaved with the servo information from the even servo bands.

摘要翻译： 提供一种包括具有伺服信息的磁带的磁带盒。 伺服信息包括位于多个纵向数据带之间的多个并行纵向伺服带。 多个伺服频带包括奇数伺服频带和偶数伺服频带，其中奇数伺服频带中的每一个位于每个偶数伺服频带之间。 多个伺服频带中的每一个包括多个帧，其中每个帧包括多个过渡条纹脉冲串，并且每个脉冲串具有第一过渡条带。 每个奇数伺服频带的每个脉冲串的第一个转移条纹从每个偶数伺服频带的每个脉冲串的第一转移条带纵向偏移大致相等的距离D，使得奇数伺服带的伺服信息与 来自偶数伺服带的伺服信息。