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1. 发明授权

US07990649B2 Method and apparatus to set a wrap angle of a read/write head 失效
标题翻译：设置读/写头的包角的方法和装置
公开(公告)号：US07990649B2
公开(公告)日：2011-08-02
申请号：US12505439
申请日：2009-07-17
申请人： Nhan Xuan Bui , Reed Alan Hancock , Robert Allen Hutchins , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Robert Allen Hutchins , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B17/00 , G11B5/584 , G11B27/36 , G11B15/60 , G11B15/00 , G11B21/02
CPC分类号： G11B15/602 , G11B5/0083 , G11B5/584 , G11B5/78 , G11B15/62
摘要： A method is presented for setting a wrap angle of a read/write head having a servo element and multiple read elements, where the servo element and the read elements can detect a servo signal. The method includes moving a sequential information storage medium having a longitudinal axis and a servo band encoded therein adjacent to the read/write head. The longitudinal axis and a flat upper surface of the read write head define the wrap angle. The method further includes detecting the servo signal using one of the read elements. If the read element is unable to detect the servo signal, then the remaining read elements are sensed to detect the servo signal.
摘要翻译：提出了一种用于设置具有伺服元件和多个读取元件的读/写头的包角的方法，其中伺服元件和读取元件可以检测伺服信号。该方法包括移动具有与读/写头相邻编码的纵轴和伺服带的顺序信息存储介质。读写头的纵向轴线和平坦的上表面限定了包角。该方法还包括使用读取元件之一来检测伺服信号。如果读取元件不能检测到伺服信号，则检测剩余的读取元件以检测伺服信号。

2. 发明授权

US08405926B2 Tape drive velocity control 失效
标题翻译：磁带机速度控制
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。

3. 发明申请

US20120019953A1 'Tape Drive Velocity Control' 失效
标题翻译： “磁带驱动器速度控制”
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。

4. 发明授权

US07903368B2 Tape cartridge having tape media with longitudinally shifted servo pattern for increased sampling rate 有权
标题翻译：磁带盒具有带有纵向移位伺服模式的磁带介质，以提高采样速率
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。

5. 发明授权

US07529061B2 Tape drive for maintaining lateral position utilizing longitudinally shifted servo pattern with increased sampling rate 有权
标题翻译：磁带驱动器用于利用纵向移位的伺服模式保持横向位置，并提高采样率
公开(公告)号：US07529061B2
公开(公告)日：2009-05-05
申请号：US12024129
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 tape drive and a method of using a tape drive is provided. The tape drive includes a head assembly including at least a first and a second servo read element configured to detect transition stripes of a servo pattern on tape media. The first servo read element is configured to detect at least two transition stripes of an even servo band on the tape media at a first time. The servo detection logic is configured to detect a timing of at least two transition stripes of the even servo band on the tape media. The servo controller is configured to position the head assembly laterally with respect to the tape media in response to the timing of the at least two transition stripes of the even servo band on the tape media. The second servo read element is configured to detect at least two transition stripes of an odd servo band on the tape media at a second time, wherein the second time is a time delay after the first time corresponding to a distance D. The servo detection logic is further configured to detect a timing of at least two transition stripes of the odd servo band on the tape media. The servo controller further is configured to position the head assembly laterally with respect to the tape media in response to the timing of the at least two transition stripes of the odd servo band on the tape media.
摘要翻译：提供了磁带机和使用磁带机的方法。磁带驱动器包括头组件，其包括至少第一和第二伺服读取元件，第一和第二伺服读取元件被配置为检测磁带介质上的伺服图案的过渡条纹。第一伺服读取元件被配置为在第一时间检测磁带介质上的偶数伺服带的至少两个过渡条带。伺服检测逻辑被配置为检测磁带介质上的偶数伺服带的至少两个过渡条带的定时。伺服控制器被配置为响应于带介质上的偶数伺服带的至少两个过渡条的时序，相对于带介质横向地定位头部组件。第二伺服读取元件被配置为在第二时间检测磁带媒体上的奇数伺服频带的至少两个过渡条带，其中第二时间是对应于距离D的第一时间之后的时间延迟。伺服检测逻辑还被配置为检测磁带介质上的奇数伺服带的至少两个过渡条带的定时。伺服控制器还被配置为响应于磁带介质上的奇数伺服带的至少两个过渡条带的定时，相对于磁带介质横向地定位磁头组件。

6. 发明申请

US20080223968A1 APPARATUS, SYSTEM, AND METHOD FOR CHECKING TAPE REEL MOTION 审中-公开
标题翻译：装置，系统和检查胶卷运动的方法
公开(公告)号：US20080223968A1
公开(公告)日：2008-09-18
申请号：US11686840
申请日：2007-03-15
申请人： NHAN Xuan BUI , Reed Alan Hancock , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
发明人： NHAN Xuan BUI , Reed Alan Hancock , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G03B1/58
CPC分类号： G11B15/32
摘要： An apparatus, system, and method are disclosed for checking tape reel motion. A control module directs a leading servo to apply torque to a leading reel and a trailing servo to apply torque to a trailing reel, wherein the control module directs the leading servo to apply an initial positive torque in a tape motion direction and directs the trailing servo to apply an initial negative torque counter to the tape motion direction. If there is no change in an angular position of the leading and trailing reels, the control module incrementally sums a first incremental positive torque to the leading torque to increase the leading torque and a second incremental positive torque to the trailing torque until there is a change in the angular position of the leading and trailing reels and/or until the torques exceed torque limits.
摘要翻译：公开了用于检查磁带卷轴运动的装置，系统和方法。控制模块引导前置伺服器将扭矩施加到前导卷轴和拖尾伺服器以向后拖线器施加扭矩，其中控制模块引导前导伺服器施加带运动方向上的初始正扭矩并引导拖尾伺服对带运动方向施加初始负扭矩计数器。如果前导和后退卷轴的角位置没有改变，则控制模块将第一增量正转矩递增地与前导转矩相加，以将前导转矩和第二增量正转矩增加到拖曳转矩直到有变化在前导和后退卷轴的角位置和/或直到扭矩超过转矩限制。

7. 发明授权

US08054569B2 Method and apparatus to identify a data band encoded between two servo bands in a sequential information storage medium 失效
标题翻译：用于识别在顺序信息存储介质中的两个伺服频带之间编码的数据频带的方法和装置
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。

8. 发明授权

US07948706B2 Apparatus and method to adjust the orientation of a read head to correct for dynamic skew 有权
标题翻译：用于调整读取头的方向以校正动态偏斜的装置和方法
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。

9. 发明授权

US07920356B2 Method and system for providing a longitudinally shifted servo pattern for increased sampling rate 失效
标题翻译：提供纵向移位伺服模式以提高采样率的方法和系统
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。

10. 发明申请

US20090190244A1 APPARATUS, SYSTEM, AND METHOD FOR DYNAMIC TAPE STICK AND TAPE BREAK DETECTION 失效
标题翻译：用于动态胶带和胶带断裂检测的装置，系统和方法
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。

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