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1.发明授权公开(公告)号：US08760788B2
公开(公告)日：2014-06-24
申请号：US13152225
申请日：2011-06-02
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
IPC分类号： G11B15/087 , G11B5/584
CPC分类号： G11B5/56 , G11B5/00817 , G11B5/584 , G11B15/602 , G11B20/10388 , G11B2220/93
摘要： In one embodiment, a tape drive system includes a magnetic head having at least one servo sensor for track-following at least one defined servo track of a longitudinal tape, a tape motion controller configured to move the longitudinal tape past the magnetic head, a compound actuator configured to translate the magnetic head laterally with respect to the longitudinal tape, and a control configured to track-follow the at least one defined servo track by reducing a position error between the magnetic head and a desired position, transition from a write state to a monitor state when the position error is greater than a threshold, transition from the monitor state to a stop write state when the position error is greater than the threshold for a first period, and transition from the monitor state to the write state when the position error is less than the threshold for a second period.
摘要翻译： 在一个实施例中，磁带驱动系统包括具有至少一个伺服传感器的磁头，该伺服传感器跟踪至少一个所定义的纵向磁带的伺服磁道，配置成使纵向磁带移动通过磁头的磁带运动控制器， 致动器被配置为相对于纵向带横向地平移磁头;以及控制器，其被配置为通过减小磁头与期望位置之间的位置误差跟踪至少一个定义的伺服轨迹，控制器从写入状态转换到 当位置误差大于阈值时的监视状态，当位置误差大于第一周期的阈值时从监视状态转变到停止写入状态，以及当位置误差大于阈值时从监视状态转变到写入状态 错误小于第二个周期的阈值。
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公开(公告)号：US08520332B2
公开(公告)日：2013-08-27
申请号：US13483789
申请日：2012-05-30
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
IPC分类号： G11B15/087 , G11B5/584
CPC分类号： G11B5/56 , G11B5/00817 , G11B5/584 , G11B15/602 , G11B20/10388 , G11B2220/93
摘要： In one embodiment, a method includes sensing a servo sensor while a longitudinal tape is moved past a magnetic head, determining position error between the magnetic head and a desired position related to the at least one defined servo track; providing signals to operate a fine actuator to translate the magnetic head laterally in a manner to reduce the determined position error; transitioning from a write state to a monitor state when the determined position error is greater than a threshold error value; transitioning from the monitor state to a stop write state when the determined position error is greater than the threshold error value for a first predetermined period; and transitioning from the monitor state to the write state when the determined position error is less than the threshold error value for a second predetermined period.
摘要翻译： 在一个实施例中，一种方法包括在纵向带移动通过磁头时感测伺服传感器，确定磁头与与至少一个限定的伺服磁道有关的期望位置之间的位置误差; 提供信号以操作精细致动器以以减少所确定的位置误差的方式横向地转动磁头; 当所确定的位置误差大于阈值误差值时，从写状态转换到监视状态; 当所确定的位置误差大于所述阈值误差值时，从所述监视状态转换到停止写入状态; 以及当所确定的位置误差小于第二预定周期的阈值误差值时，从监视状态转换到写入状态。
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3.发明申请SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR FAST RECOVERY TO A WRITE STATE 失效系统，方法和计算机程序产品，用于快速恢复到写状态公开(公告)号：US20120307390A1
公开(公告)日：2012-12-06
申请号：US13152225
申请日：2011-06-02
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
IPC分类号： G11B27/36
CPC分类号： G11B5/56 , G11B5/00817 , G11B5/584 , G11B15/602 , G11B20/10388 , G11B2220/93
摘要： In one embodiment, a tape drive system includes a magnetic head having at least one servo sensor for track-following at least one defined servo track of a longitudinal tape, a tape motion controller configured to move the longitudinal tape past the magnetic head, a compound actuator configured to translate the magnetic head laterally with respect to the longitudinal tape, and a control configured to track-follow the at least one defined servo track by reducing a position error between the magnetic head and a desired position, transition from a write state to a monitor state when the position error is greater than a threshold, transition from the monitor state to a stop write state when the position error is greater than the threshold for a first period, and transition from the monitor state to the write state when the position error is less than the threshold for a second period.
摘要翻译： 在一个实施例中，磁带驱动系统包括具有至少一个伺服传感器的磁头，该伺服传感器跟踪至少一个所定义的纵向磁带的伺服磁道，配置成使纵向磁带移动通过磁头的磁带运动控制器， 致动器被配置为相对于纵向带横向地平移磁头;以及控制器，其被配置为通过减小磁头与期望位置之间的位置误差跟踪至少一个定义的伺服轨迹，控制器从写入状态转换到 当位置误差大于阈值时的监视状态，当位置误差大于第一周期的阈值时从监视状态转变到停止写入状态，以及当位置误差大于阈值时从监视状态转变到写入状态 错误小于第二个周期的阈值。
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4.发明授权System, method, and computer program product for servo compensator switching in high vibration environments 失效用于高振动环境下伺服补偿器切换的系统，方法和计算机程序产品公开(公告)号：US08611038B2
公开(公告)日：2013-12-17
申请号：US13152244
申请日：2011-06-02
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
摘要： A tape drive system according to one embodiment includes a magnetic head having at least one servo sensor; a tape motion controller; a fine actuator; a skew actuator; a coarse actuator; and a control. The control is configured to perform various operations that help account for vibrations that effect track-following a servo track when operating a tape drive. Additional systems, methods and computer program products are also described.
摘要翻译： 根据一个实施例的磁带驱动系统包括具有至少一个伺服传感器的磁头; 胶带运动控制器; 精细执行器; 偏斜执行器; 粗致动器; 和控制。 该控制被配置为执行各种操作，这些操作有助于考虑在操作磁带机时影响跟踪伺服磁道的振动。 还描述了附加的系统，方法和计算机程序产品。
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公开(公告)号：US20120307392A1
公开(公告)日：2012-12-06
申请号：US13483789
申请日：2012-05-30
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
CPC分类号： G11B5/56 , G11B5/00817 , G11B5/584 , G11B15/602 , G11B20/10388 , G11B2220/93
摘要： In one embodiment, a method includes sensing a servo sensor while a longitudinal tape is moved past a magnetic head, determining position error between the magnetic head and a desired position related to the at least one defined servo track; providing signals to operate a fine actuator to translate the magnetic head laterally in a manner to reduce the determined position error; transitioning from a write state to a monitor state when the determined position error is greater than a threshold error value; transitioning from the monitor state to a stop write state when the determined position error is greater than the threshold error value for a first predetermined period; and transitioning from the monitor state to the write state when the determined position error is less than the threshold error value for a second predetermined period.
摘要翻译： 在一个实施例中，一种方法包括在纵向带移动通过磁头时感测伺服传感器，确定磁头与与至少一个限定的伺服磁道有关的期望位置之间的位置误差; 提供信号以操作精细致动器以以减少所确定的位置误差的方式横向地转动磁头; 当所确定的位置误差大于阈值误差值时，从写状态转换到监视状态; 当所确定的位置误差大于所述阈值误差值时，从所述监视状态转换到停止写入状态; 以及当所确定的位置误差小于第二预定周期的阈值误差值时，从监视状态转换到写入状态。
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6.发明申请SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR SERVO COMPENSATOR SWITCHING IN HIGH VIBRATION ENVIRONMENTS 失效高振动环境下伺服补偿器开关的系统，方法和计算机程序产品公开(公告)号：US20120307391A1
公开(公告)日：2012-12-06
申请号：US13152244
申请日：2011-06-02
申请人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
发明人： Nhan X. Bui , Reed A. Hancock , Tomoko Taketomi
摘要： A tape drive system according to one embodiment includes a magnetic head having at least one servo sensor; a tape motion controller; a fine actuator; a skew actuator; a coarse actuator; and a control. The control is configured to perform various operations that help account for vibrations that effect track-following a servo track when operating a tape drive. Additional systems, methods and computer program products are also described.
摘要翻译： 根据一个实施例的磁带驱动系统包括具有至少一个伺服传感器的磁头; 胶带运动控制器; 精细执行器; 偏斜执行器; 粗致动器; 和控制。 该控制被配置为执行各种操作，这些操作有助于考虑在操作磁带机时影响跟踪伺服磁道的振动。 还描述了附加的系统，方法和计算机程序产品。
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公开(公告)号：US20110134556A1
公开(公告)日：2011-06-09
申请号：US12630087
申请日：2009-12-03
申请人： Nhan X. Bui , Reed A. Hancock , Kevin B. Judd , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Reed A. Hancock , Kevin B. Judd , Kazuhiro Tsuruta
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：US07724466B2
公开(公告)日：2010-05-25
申请号：US12036905
申请日：2008-02-25
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A method and system for servo stripe width detection and compensation including moving a magnetic tape in a first direction across a magnetic tape head, the magnetic tape having a servo band including a first servo pattern and a second servo pattern, the magnetic tape head having a servo element; detecting a leading edge and a trailing edge of the first servo pattern with the servo element; detecting a leading edge and a trailing edge of the second servo pattern with the servo element; determining a first time from the leading edge of the first servo pattern to the leading edge of the second servo pattern; determining a second time from the trailing edge of the first servo pattern to the trailing edge of the second servo pattern; and determining a correction value from a difference between the first time and the second time.
摘要翻译： 一种用于伺服条宽检测和补偿的方法和系统，包括在磁带头上沿第一方向移动磁带，磁带具有包括第一伺服模式和第二伺服模式的伺服带，磁带头具有 伺服元件 用伺服元件检测第一伺服模式的前缘和后缘; 用伺服元件检测第二伺服模式的前缘和后缘; 确定从第一伺服模式的前沿到第二伺服模式的前沿的第一时间; 确定从第一伺服模式的后沿到第二伺服模式的后沿的第二时间; 以及从所述第一时间和所述第二时间之间的差确定校正值。
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9.发明授权System for fast center calibration of a tape drive for a flangeless tape path 有权用于快速中心校准用于无法兰磁带路径的磁带机的系统公开(公告)号：US08526134B2
公开(公告)日：2013-09-03
申请号：US13152238
申请日：2011-06-02
申请人： Nhan X. Bui , Reed A. Hancock , Randy C. Inch
发明人： Nhan X. Bui , Reed A. Hancock , Randy C. Inch
IPC分类号： G11B5/584
CPC分类号： G11B21/103 , G11B5/584
摘要： A servo system according to one embodiment includes at least one servo sensor for sensing a lateral position of a magnetic head with respect to at least one defined servo track of a longitudinal tape; a fine actuator configured to translate the magnetic head laterally with respect to the longitudinal tape; a coarse actuator configured to translate the fine actuator laterally with respect to the longitudinal tape; and a servo control. The servo control is configured to perform various operations that may be used to estimate a midpoint of lateral tape excursion of a flangeless tape path for calibrating a tape drive. Additional systems are also presented.
摘要翻译： 根据一个实施例的伺服系统包括至少一个伺服传感器，用于相对于纵向带的至少一个限定的伺服轨道感测磁头的横向位置; 精细致动器，被配置为相对于纵向带横向移动磁头; 粗致动器构造成相对于纵向带横向地平移细致致动器; 和伺服控制。 伺服控制被配置为执行可用于估计用于校准磁带驱动器的无法兰磁带路径的侧向磁带偏移的中点的各种操作。 还介绍了其他系统。
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10.发明授权公开(公告)号：US08094402B2
公开(公告)日：2012-01-10
申请号：US12686302
申请日：2010-01-12
CPC分类号： G11B15/62 , G11B15/43 , G11B15/602
摘要： Magnetic tape devices encounter read and/or write errors when the tape is not being passed across the head with the proper tension and/or skew angle. According to one embodiment, a system which corrects for these problems comprises a head having an array of at least one of readers and writers, a drive mechanism for passing a magnetic recording tape over the head, a skew-inducing mechanism coupled to the head for adjusting a skew angle of a longitudinal axis of the array relative to a direction normal to a direction of tape travel over the head, and a controller in communication with the head. The system also determines a tape dimensional stability state of the tape and adjust the skew angle away from normal to the direction of tape travel and lowers a tension of the tape across the head if the tape dimensional stability state is in a contracted state.
摘要翻译： 当磁带没有以适当的张力和/或倾斜角度穿过磁头时，磁带设备会遇到读取和/或写入错误。 根据一个实施例，校正这些问题的系统包括具有读取器和写入器中的至少一个的阵列的头部，用于将磁记录带通过头部的驱动机构，耦合到头部的偏斜引导机构 调整所述阵列的纵向轴线相对于垂直于所述头部上的带行进方向的方向的倾斜角度，以及与所述头部连通的控制器。 该系统还确定胶带的胶带尺寸稳定性状态，并且如果胶带尺寸稳定状态处于收缩状态，则将偏斜角度调整为离开行走方向远离纸张行进方向并降低胶带横过头部的张力。
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