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公开(公告)号：US08780484B2
公开(公告)日：2014-07-15
申请号：US13600094
申请日：2012-08-30
申请人： Reed A. Hancock , Randy C. Inch , Eiji Ogura
发明人： Reed A. Hancock , Randy C. Inch , Eiji Ogura
CPC分类号： G11B15/46 , G11B5/00813 , G11B5/0083 , G11B5/40 , G11B5/60 , G11B15/467 , G11B15/52 , G11B15/62
摘要： A method according to one embodiment includes setting a default friction value to a predetermined value, determining whether a primary velocity is valid, determining a velocity error, determining whether the velocity error is in a predetermined range, accumulating the velocity error when the velocity error is determined to be in the predetermined range, repeating, until a time period has elapsed, each of: the determining the velocity error, the determining whether the velocity error is in the predetermined range, and the accumulating the velocity error when the velocity error is determined to be in the predetermined range, and calculating a new friction value based on the accumulated velocity error.
摘要翻译： 根据一个实施例的方法包括将默认摩擦值设置为预定值，确定主速度是否有效，确定速度误差，确定速度误差是否在预定范围内，当速度误差为 确定为在预定范围内，重复，直到经过时间段为止：确定速度误差，确定速度误差是否在预定范围内，并且当确定速度误差时累积速度误差 处于预定范围内，并且基于累积的速度误差来计算新的摩擦值。
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公开(公告)号：US08767335B2
公开(公告)日：2014-07-01
申请号：US13600069
申请日：2012-08-30
申请人： Reed A. Hancock , Randy C. Inch , Eiji Ogura
发明人： Reed A. Hancock , Randy C. Inch , Eiji Ogura
摘要： A method according to one embodiment includes selecting an initial radius value (Rfull) for an outgoing reel, where Rfull is the initial radius of a tape on the outgoing reel; unwinding the tape from the outgoing reel; computing a radius value of the tape on the outgoing reel during the unwinding; adjusting the computed radius with an offset calculated from a direct measurement of velocity from the tape position; and outputting the adjusted computed radius. A method according to another embodiment includes selecting an initial radius value (R0) for an incoming reel, where R0 is the initial radius of the incoming reel; winding the tape onto the incoming reel; computing a radius value of the tape on the incoming reel during the winding; adjusting the computed radius with an offset calculated from a direct measurement of velocity from the tape position; and outputting the adjusted computed radius.
摘要翻译： 根据一个实施例的方法包括为输出卷轴选择初始半径值（Rfull），其中Rfull是输出卷轴上的带的初始半径; 从出纸卷轴上取出胶带; 在展开期间计算输出卷轴上的胶带的半径值; 利用从带位置直接测量速度计算的偏移来调整计算出的半径; 并输出调整后的计算半径。 根据另一实施例的方法包括：对于输入卷轴选择初始半径值（R0），其中R0是输入卷轴的初始半径; 将胶带卷绕到进纸卷轴上; 在卷绕期间计算进纸卷轴上的胶带的半径值; 利用从带位置直接测量速度计算的偏移来调整计算出的半径; 并输出调整后的计算半径。
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3.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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4.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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5.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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公开(公告)号：US20110216434A1
公开(公告)日：2011-09-08
申请号：US12716037
申请日：2010-03-02
IPC分类号： G11B19/02
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：US07658344B2
公开(公告)日：2010-02-09
申请号：US11961755
申请日：2007-12-20
申请人： Reed A. Hancock , James A. Jackmond , Linda S. Daanen, legal representative , Joseph C. Ramirez
IPC分类号： G11B23/107
CPC分类号： G11B23/045 , G11B23/0308 , G11B23/107
摘要： A method to write information to, or retrieve information from, an information storage medium disposed within a portable data storage cartridge moveably disposed in a data storage and retrieval system, wherein the data storage and retrieval system further comprises a data storage device. The portable data storage cartridge comprises a moveable curved door slidingly disposed within the enclosure, and a tape reel rotatably disposed within the enclosure, wherein the moveable curved door and the tape reel are non-concentric. The method retrieves the portable data storage cartridge from a storage slot, transports that portable data storage cartridge to a data storage device, disposes the portable data storage cartridge in the data storage device. The method further moves the moveable curved door from said a position to a second position, and reads information from and/or writes information to, the information storage medium.
摘要翻译： 向可移动地设置在数据存储和检索系统中的便携式数据存储盒中的信息存储介质写入信息或从信息存储介质中提取信息的方法，其中所述数据存储和检索系统还包括数据存储设备。 便携式数据存储盒包括滑动地设置在外壳内的可移动弯曲门，以及可旋转地设置在外壳内的磁带盘，其中可移动的弯曲的门和磁带卷轴是非同心的。 该方法从存储槽检索便携式数据存储盒，将便携式数据存储盒传送到数据存储装置，将便携式数据存储盒放置在数据存储装置中。 该方法进一步将可移动弯曲门从所述位置移动到第二位置，并从信息存储介质读取信息和/或向其写入信息。
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8.发明授权Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm 失效通过限制头相对于其支撑头臂的位移来控制磁盘存储单元中的磁头寻道速度
公开(公告)号：US5060210A
公开(公告)日：1991-10-22
申请号：US589706
申请日：1990-09-28
申请人： Alan A. Fennema , Reed A. Hancock
发明人： Alan A. Fennema , Reed A. Hancock
IPC分类号： G11B5/55 , G11B7/085 , G11B11/105 , G11B21/08
CPC分类号： G11B21/085 , G11B11/10556 , G11B5/5556 , G11B7/08517 , G11B7/08588
摘要： In a "piggy-back" head support system, a fine actuator which carries the head (lens or transducer) is controlled to move the head. A coarse actuator or headarm movably supports the fine actuator and is mounted on a frame for movement radially of the signal storage disk. The head scans tracks on the disk. A servo actuates the coarse actuator to follow the movements of the fine actuator. In a seek, the fine coarse actuator may not be able to follow the fine actuator resulting in the fine actuator hitting a safety stop. When this happens, seek errors occur. According to the invention, the relative displacement of the fine actuator with respect to the coarse actuator is limited during predetermined portions of a seek operation, i.e., the high speed accelerate and decelerate portions.
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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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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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