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1. 发明授权

US06710954B2 Tape drive and servo system stabilization method 失效
标题翻译：磁带驱动器和伺服系统稳定方法
公开(公告)号：US06710954B2
公开(公告)日：2004-03-23
申请号：US09931227
申请日：2001-08-16
申请人： Nhan Xuan Bui , Tomoaki Kimura , Akimitsu Sasaki
发明人： Nhan Xuan Bui , Tomoaki Kimura , Akimitsu Sasaki
IPC分类号： G11B2736
CPC分类号： G11B27/36 , G11B5/584 , G11B2220/90
摘要： In a tape drive system performing read/write operations on a tape by inserting a tape cartridge into a tape drive, the tape cartridge having a tape on which servo and data tracks are arranged longitudinally and a predetermined servo pattern is recorded on each of the servo tracks, a method and system for re-setting coefficients of a low-pass filter for servo control of the tape drive, each time the tape cartridge is inserted into the tape drive so that a servo system of the tape drive is stabilized. More specifically, the servo pattern is read from the tape in the cartridge inserted into the tape drive, frequency analysis for the read servo pattern is performed, a singularity that exceeds a predetermined spectrum range is detected from frequency components obtained by the frequency analysis, and the coefficients of the low-pass filter are set so as to cancel a power spectrum of the singularity.
摘要翻译：在磁带驱动器系统中，通过将带盒插入磁带驱动器来对磁带执行读/写操作，磁带盒具有纵向布置有伺服和数据磁道的磁带，并且预定的伺服模式被记录在每个伺服机构轨道，用于重新设置用于磁带驱动器的伺服控制的低通滤波器的系数的方法和系统，每当磁带盒插入到磁带驱动器中，使得磁带驱动器的伺服系统稳定时。更具体地说，从插入到磁带驱动器中的磁带中的磁带读取伺服模式，执行读取伺服模式的频率分析，通过频率分析获得的频率分量检测出超过预定频谱范围的奇点，低通滤波器的系数被设定为消除奇点的功率谱。

2. 发明授权

US06587303B1 Servo control of a coarse actuator 有权
标题翻译：伺服控制粗动执行器
公开(公告)号：US06587303B1
公开(公告)日：2003-07-01
申请号：US09590673
申请日：2000-06-09
申请人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
IPC分类号： G11B5596
CPC分类号： G11B5/584
摘要： A servo system and method position a head laterally with respect to defined servo tracks, employing fine and coarse actuators. A servo control integrates the position error between the head and a desired position in accordance with a predetermined function, and operates the coarse actuator to translate the fine actuator and the head in accordance with the integrated position error. A position error signal loop is coupled to a servo sensor for determining position error for operating the fine actuator to translate the head in a manner to reduce the position error. The position error signal loop may have a compensator function with both integration and other functions. A coarse servo control comprises a connection coupled to the compensator function for providing an integration control representing the integration function of the position error signal loop; and a driver coupled to the connection, operating the coarse actuator to translate the fine actuator and the head in accordance with the integration signal.
摘要翻译：伺服系统和方法相对于限定的伺服轨道横向定位头部，采用精细和粗略的致动器。伺服控制器根据预定的功能将头部和期望位置之间的位置误差进行积分，并且根据积分位置误差操作粗略致动器来平移精细致动器和头部。位置误差信号回路耦合到伺服传感器，用于确定用于操作精细致动器的位置误差，以便以降低位置误差的方式平移头部。位置误差信号回路可以具有补偿器功能，具有集成和其他功能。粗伺服控制包括耦合到补偿器功能的连接，用于提供表示位置误差信号回路的积分功能的积分控制; 以及耦合到所述连接的驱动器，操作所述粗略致动器以根据所述积分信号平移所述精细致动器和所述头部。

3. 发明授权

US06721126B1 Position identification for a coarse actuator portion of a compound actuator 失效
标题翻译：复合致动器的粗致动器部分的位置识别
公开(公告)号：US06721126B1
公开(公告)日：2004-04-13
申请号：US09641135
申请日：2000-08-16
申请人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
IPC分类号： G11B5584
CPC分类号： G11B5/584 , G11B5/5508 , G11B21/088 , G11B21/103
摘要： A method and position control for a servo system for positioning a head laterally with respect to defined servo tracks. The servo system comprises a servo sensor and detector for sensing lateral position of the head and a compound actuator having a fine actuator portion and a coarse actuator portion. The position control provides position indications for the coarse actuator portion, which may comprise a table relating predetermined nominal lateral position indications to the defined servo tracks. The position control positions the coarse actuator portion at an estimated position with respect to the defined servo tracks, and responds to the servo sensor to determine which servo track is closest to the estimated position. The position control sets the coarse actuator portion position indication to the predetermined nominal lateral position indication of the closest defined servo track, e.g., by looking it up in the table. This thereby corrects the indication of the position of the coarse actuator portion.
摘要翻译：一种用于伺服系统的方法和位置控制，用于相对于限定的伺服轨道横向地定位头部。伺服系统包括用于感测头部的横向位置的伺服传感器和检测器以及具有精细致动器部分和粗略致动器部分的复合致动器。位置控制提供了粗略致动器部分的位置指示，该粗略致动器部分可以包括将预定的标称横向位置指示与定义的伺服轨迹相关联的工作台。位置控制将粗略致动器部分定位在相对于所定义的伺服轨道的估计位置处，并且响应伺服传感器以确定哪个伺服轨道最接近估计位置。位置控制将粗略的致动器部分位置指示设置为最接近的定义的伺服轨道的预定的标称横向位置指示，例如通过在表中查找。由此校正了粗略的致动器部分的位置的指示。

4. 发明授权

US06580581B1 Recovery of lateral position of a servo system with respect to longitudinal servo bands of a magnetic tape 有权
标题翻译：恢复伺服系统相对于磁带的纵向伺服带的横向位置
公开(公告)号：US06580581B1
公开(公告)日：2003-06-17
申请号：US09639076
申请日：2000-08-16
申请人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , John Alexander Koski , Akimitsu Sasaki , Kazuhiro Tsuruta
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： A servo system and method position a head laterally with respect to magnetic tape longitudinal defined servo bands arranged in a longitudinally shifted pattern for identification, and separated by data tracks. A servo controller responds to a loss of lateral position, sensing an estimated longitudinal position of the magnetic tape. If the estimated longitudinal position is within a predetermined distance of an end of the tape, the servo controller operates a drive to continuously move the tape away from the sensed end. The servo controller senses a home lateral position sensor to determine whether a compound actuator is within a predetermined distance of the edge of the magnetic tape. If so, it operates the coarse actuator portion of the compound actuator to move laterally away from the edge of the magnetic tape; else, to move toward the edge. The servo controller senses a dual servo sensor to detect any two of the defined servo bands; and, upon sensing any two of the defined servo bands, detects the longitudinal shift to identify which ones of the two defined servo bands have been detected.
摘要翻译：伺服系统和方法相对于以纵向移位的图案布置的磁带纵向限定的伺服带横向地定位头部，用于识别，并由数据轨道分隔。伺服控制器响应横向位置的损失，感测估计的磁带的纵向位置。如果估计的纵向位置在带的端部的预定距离之内，则伺服控制器操作驱动器以使带远离感测的端部移动。伺服控制器感测家用横向位置传感器以确定复合致动器是否在磁带的边缘的预定距离内。如果是这样，它操作复合致动器的粗略的致动器部分横向移动离开磁带的边缘; 否则，走向边缘。伺服控制器检测双伺服传感器来检测任何两个定义的伺服带; 并且在感测到所定义的伺服带中的任何两个时，检测纵向偏移以识别已经检测出两个所定义的伺服带中的哪一个。

5. 发明授权

US08446119B2 Controlling an electric motor by dynamic switching 失效
标题翻译：通过动态切换控制电动机
公开(公告)号：US08446119B2
公开(公告)日：2013-05-21
申请号：US13099276
申请日：2011-05-02
申请人： Allen Keith Bates , Nhan Xuan Bui , Reed Alan Hancock , Wayne Isami Imaino , Daniel James Winarski
发明人： Allen Keith Bates , Nhan Xuan Bui , Reed Alan Hancock , Wayne Isami Imaino , Daniel James Winarski
IPC分类号： H02P23/00
CPC分类号： H02P25/18 , H02P27/08
摘要： An apparatus for controlling an electric motor is provided. A plurality of switches is provided for controlling a direction of current through motor coils of the electric motor. A brushless motor control circuit is connected to each of the plurality of switches. Responsive to a request to adjust one of an angular velocity and an angular acceleration of the electric motor, the plurality of switches are activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils.
摘要翻译：提供一种用于控制电动机的装置。提供多个开关，用于控制电动机的电动机线圈的电流方向。无刷电机控制电路连接到多个开关中的每一个。响应于调整电动机的角速度和角加速度之一的请求，多个开关被激活，以将电动机线圈放置在预定的配置中以使转矩最大化或者减小总反向电动势（BEMF）电机线圈。

6. 发明授权

US08288979B2 Motor control mechanism for electric vehicles 有权
标题翻译：电动汽车电机控制机构
公开(公告)号：US08288979B2
公开(公告)日：2012-10-16
申请号：US12355495
申请日：2009-01-16
申请人： Allen Keith Bates , Nhan Xuan Bui , Reed Alan Hancock , Wayne Isami Imaino , Daniel James Winarski
发明人： Allen Keith Bates , Nhan Xuan Bui , Reed Alan Hancock , Wayne Isami Imaino , Daniel James Winarski
IPC分类号： H02P7/00
CPC分类号： H02P3/12 , H02P1/04
摘要： An apparatus for controlling a wheel motor is provided. A plurality of switches is provided for controlling a direction of current through motor coils of the wheel motor. A brushless motor control circuit is connected to each of the plurality of switches. Responsive to a request to adjust one of an angular velocity and an angular acceleration of the wheel motor, the plurality of switches are activated to place the motor coils in a predetermined configuration to maximize torque or reduce a total back electromotive force (BEMF) from the motor coils.
摘要翻译：提供了一种用于控制车轮电动机的装置。提供多个开关，用于控制通过车轮马达的马达线圈的电流方向。无刷电机控制电路连接到多个开关中的每一个。响应于调整车轮电动机的角速度和角加速度之一的请求，多个开关被激活，以将电动机线圈放置在预定的构型中，以最大化转矩或减小总反向电动势（BEMF）电机线圈。

7. 发明授权

US08270114B2 Magnetically biased tilting roller bearing tape guidance 有权
标题翻译：磁偏置倾斜滚子轴承带导轨
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。

8. 发明授权

US08139312B2 Timing alternative intervals within a timing based servo band 有权
标题翻译：基于定时的伺服带内的定时替代间隔
公开(公告)号：US08139312B2
公开(公告)日：2012-03-20
申请号：US12716037
申请日：2010-03-02
申请人： Nhan Xuan Bui , Giovanni Cherubini , Reed Alan Hancock , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Giovanni Cherubini , Reed Alan Hancock , Jens Jelitto , Kazuhiro Tsuruta
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。

9. 发明授权

US08107186B2 Determination of timing based servo pattern type 失效
标题翻译：基于定时的伺服模式类型的确定
公开(公告)号：US08107186B2
公开(公告)日：2012-01-31
申请号：US12776944
申请日：2010-05-10
申请人： Nhan Xuan Bui , Giovanni Cherubini , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Giovanni Cherubini , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B21/02 , G11B5/584 , G11B5/09
CPC分类号： G11B5/00878 , G11B5/584 , G11B20/1403 , G11B2020/1484 , G11B2220/90
摘要： In a magnetic tape drive having a servo read system with at least one read head, the system configured to read servo pattern information as a magnetic tape is moved longitudinally with respect to the at least one read head, the servo pattern comprising a timing-based servo pattern comprising an even number of bursts of sloped magnetic stripes, adjacent bursts oppositely sloped, alternate bursts identically sloped, an embodiment of a method determines the time between detection from the read head of a same stripe of alternate bursts of a pattern; determines the time between detection from the read head of stripes of a burst of a pattern; and determines a ratio of the determined times. The ratio is compared to a threshold, wherein the threshold comprises a differentiation between different servo pattern types.
摘要翻译：在具有至少一个读取头的伺服读取系统的磁带驱动器中，配置为读取作为磁带的伺服模式信息的系统相对于至少一个读取头纵向移动，伺服模式包括基于时序的伺服模式包括偶数数量的倾斜磁条脉冲串，相邻突发脉冲相对倾斜，相同倾斜的交替脉冲串，方法的实施例确定从图形的相同条纹的同一条带的读出头检测之间的时间; 确定从图案的突发的条带的读取头检测之间的时间; 并确定所确定的时间的比率。该比率与阈值进行比较，其中阈值包括不同伺服模式类型之间的区分。

10. 发明授权

US08094406B2 Apparatus and method to adjust the positions of a write element and read element disposed on a read/write head 失效
标题翻译：用于调整设置在读/写头上的写元件和读元件的位置的装置和方法
公开(公告)号：US08094406B2
公开(公告)日：2012-01-10
申请号：US12475777
申请日：2009-06-01
申请人： Allen Keith Bates , Nhan Xuan Bui , Daniel James Winarski
发明人： Allen Keith Bates , Nhan Xuan Bui , Daniel James Winarski
IPC分类号： G11B5/584 , G11B5/58 , G11B20/20
CPC分类号： G11B5/584
摘要： A method to adjust the positions of a write element and read element disposed on a read/write head comprising a first assembly independently moveable along a first axis and comprising a first servo element, a second servo element, and the write element disposed between the first servo element and the second servo element and a second assembly independently moveable along the first axis and comprising a third servo element, a fourth servo element, and the read element disposed between the third servo element and the fourth servo element. The method moves a sequential information storage medium adjacent to the read/write head along a second axis, wherein the second axis is substantially orthogonal to the first axis, and determines a dynamic skew for the sequential information storage medium with respect to the read/write head using the first servo element and the second servo element. The method then positions the first assembly with respect to the second assembly to correct for that dynamic skew angle.
摘要翻译：一种用于调整设置在读/写头上的写入元件和读取元件的位置的方法，包括第一组件，其可以沿着第一轴独立地移动并且包括第一伺服元件，第二伺服元件以及设置在第一伺服元件和第二伺服元件以及第二组件可独立地沿着第一轴线移动并且包括第三伺服元件，第四伺服元件以及设置在第三伺服元件和第四伺服元件之间的读取元件。该方法沿着第二轴移动与读/写头相邻的顺序信息存储介质，其中第二轴基本上与第一轴正交，并且相对于读/写确定顺序信息存储介质的动态偏移使用第一伺服元件和第二伺服元件。该方法然后将第一组件相对于第二组件定位以校正该动态偏斜角。

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