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公开(公告)号：US08054576B2
公开(公告)日：2011-11-08
申请号：US12707316
申请日：2010-02-17
CPC分类号： G11B5/584
摘要： A servo detection system for detecting servo tracks of a longitudinal tape. In a read/write head, two servo read heads are spaced laterally on a first head module, and a servo read head is on a second head module spaced longitudinally from the first module. A method comprises initially sensing a tape servo track with one servo read head of the first module and the servo read head of the second module to determine skew misalignment of the servo track. A zero reference value is stored representing the determined skew misalignment. The detection system switches from the one servo read head of each module, to the two servo read heads of the first module, and employs the stored value to position the read/write head in the zero skew position. The two servo read heads are then employed to read two servo tracks to identify the data band and to control skew.
摘要翻译： 一种用于检测纵向磁带的伺服磁道的伺服检测系统。 在读/写头中，两个伺服读头在第一头模块上横向隔开，并且伺服读头位于与第一模块纵向间隔开的第二头模块上。 一种方法包括：首先利用第一模块的一个伺服读取头和第二模块的伺服读取头来感测磁带伺服磁道，以确定伺服磁道的偏斜不对准。 存储表示所确定的倾斜未对准的零参考值。 检测系统从每个模块的一个伺服读取头切换到第一个模块的两个伺服读取头，并使用存储的值将读/写头置于零倾斜位置。 然后使用两个伺服读取头来读取两个伺服磁道以识别数据带并控制偏斜。
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公开(公告)号：US08004789B2
公开(公告)日：2011-08-23
申请号：US12630087
申请日：2009-12-03
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A method, a servo system and a tape drive are provided to acquire lock on a servo signal. The servo signals of at least one servo element are monitored to detect a valid servo signal. If a valid servo signal is not detected than the fine actuator is moved in a first direction until either a valid servo signal is detected or the fine actuator travel limit is reached. When a valid servo signal is detected, the fine actuator is set to a neutral position and the coarse actuator is moved in the first direction. When the fine actuator travel limit is reached the fine actuator is moved to the first position and the coarse actuator is moved in a second direction, opposite of the first direction.
摘要翻译： 提供一种方法，伺服系统和磁带驱动器来获取对伺服信号的锁定。 监视至少一个伺服元件的伺服信号以检测有效的伺服信号。 如果没有检测到有效的伺服信号比精细致动器沿第一方向移动，直到检测到有效的伺服信号或达到精细执行器行程极限。 当检测到有效的伺服信号时，精细致动器被设定为中立位置，粗略的致动器沿第一方向移动。 当达到精细致动器行程极限时，精细致动器移动到第一位置，并且粗略致动器沿与第一方向相反的第二方向移动。
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公开(公告)号：US08749922B2
公开(公告)日：2014-06-10
申请号：US13555850
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
摘要翻译： 磁带驱动系统的磁带移动限制包括可倾斜的带滚子轴承，其具有适于当滚筒旋转时接触和接合带的表面的开槽表面;以及致动器，其适于在致动器为 致动，以控制胶带的横向位置。 在一个实施例中，在一个实施例中，可旋转滚子轴承的滚筒是利用可移动磁体和导磁材料返回路径结构之间的磁吸引力在枢转轴线上被偏置在第一位置。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 描述和要求保护其他实施例。
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公开(公告)号：US08743508B2
公开(公告)日：2014-06-03
申请号：US13555833
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
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公开(公告)号：US08270114B2
公开(公告)日：2012-09-18
申请号：US12028649
申请日：2008-02-08
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a roller barrel biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. At least a portion of any air bearing between the moving tape and the barrel surface is quenched using grooves formed in the barrel surface. Other embodiments are described and claimed.
摘要翻译： 在一个实施例中，用于磁带驱动系统的磁带移动约束包括可倾斜带滚子轴承，其具有在枢转轴线上被偏置在第一位置的滚筒，使用可移动磁体和导磁材料的返回路径结构之间的磁吸引 。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 移动带和筒表面之间任何空气轴承的至少一部分使用在桶表面中形成的凹槽进行淬火。 描述和要求保护其他实施例。
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公开(公告)号：US20130021693A1
公开(公告)日：2013-01-24
申请号：US13555833
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/46
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
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公开(公告)号：US20130021692A1
公开(公告)日：2013-01-24
申请号：US13555850
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/18
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
摘要翻译： 磁带驱动系统的磁带移动限制包括可倾斜的带滚子轴承，其具有适于当滚筒旋转时接触和接合带的表面的开槽表面;以及致动器，其适于在致动器为 致动，以控制胶带的横向位置。 在一个实施例中，在一个实施例中，可旋转滚子轴承的滚筒是利用可移动磁体和导磁材料返回路径结构之间的磁吸引力在枢转轴线上被偏置在第一位置。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 描述和要求保护其他实施例。
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公开(公告)号：US20090201608A1
公开(公告)日：2009-08-13
申请号：US12028649
申请日：2008-02-08
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. At least a portion of any air bearing between the moving tape and the barrel surface is quenched using grooves formed in the barrel surface. The lateral position of the moving tape is sensed and the rotating roller barrel is tilted in response to the sensed lateral position of the moving tape to control the lateral position of the moving tape. Other embodiments are described and claimed.
摘要翻译： 在一个实施例中，用于磁带驱动系统的磁带移动约束包括可倾斜的带滚子轴承，其具有适于在滚筒旋转时接触和接合带的表面的开槽表面;以及致动器，其适于使滚子轴承表面 当致动器被致动时，以控制带的横向位置。 在一个实施例中，在一个实施例中，可旋转滚子轴承的滚筒是利用可移动磁体和导磁材料返回路径结构之间的磁吸引力在枢转轴线上被偏置在第一位置。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 移动带和筒表面之间任何空气轴承的至少一部分使用在桶表面中形成的凹槽进行淬火。 感测到移动带的横向位置，并且响应于感测到的移动带的横向位置而使旋转辊筒倾斜以控制移动带的横向位置。 描述和要求保护其他实施例。
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公开(公告)号：US08139312B2
公开(公告)日：2012-03-20
申请号：US12716037
申请日：2010-03-02
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： An alternative time interval is taken of a timing based servo band to determine lateral position of a servo read head. The servo band is arranged in a sequence bursts with non-parallel servo stripes in sequentially adjacent sub-frames of a linear tape. The timing intervals comprise at least a first time interval (A) between a first pair of non-parallel servo stripes of a sub-frame; and an alternative time interval (C) between a pair of non-parallel servo stripes intermediate the first time intervals (A), the alternative interval servo stripes of sequentially adjacent sub-frames comprising a second servo stripe of the first pair, and a first servo stripe of a sequentially succeeding first pair. Position signals are ratios involving the first and second time intervals.
摘要翻译： 采用基于定时的伺服频带的替代时间间隔来确定伺服读取头的横向位置。 伺服带在线性带的顺序相邻的子帧中以非平行的伺服条形序列突发。 定时间隔包括子帧的第一对非平行伺服条带之间的至少第一时间间隔（A）; 以及在第一时间间隔（A）之间的一对非平行伺服条之间的替代时间间隔（C），包括第一对的第二伺服条的顺序相邻子帧的替代间隔伺服条，以及第一对 顺序后续的第一对的伺服条纹。 位置信号是涉及第一和第二时间间隔的比率。
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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
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。
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