公开(公告)号：US08699174B2

公开(公告)日：2014-04-15

申请号：US13220391

申请日：2011-08-29

申请人： Charles E. Kinney ,  Ming-Chih Weng

发明人： Charles E. Kinney ,  Ming-Chih Weng

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A tape drive (232) that receives a tape cartridge (42) having a tape (256) comprises a tape head (280) and a control system (270). The tape head (280) transfers data between the tape drive (232) and the tape (256). The control system (270) utilizes linear parameterization to control the position of the tape head (280) relative to the tape (256). The control system (270) can include a compensator (J) and a filter (Q). The compensator (J) is a combination of the information contained in a nominal control system (370A) and the information contained in a model of the servo system (370B). The model of the servo system (370B) estimates system disturbances that affect the tracking ability of the control system (270). The filter (Q) filters the estimated system disturbances to generate a filtered system disturbance signal. The filtered system disturbance signal is then used to adjust the output of the compensator (J). Additionally, the control system (270) can utilize Youla-Kucera parameterization to control the position of the tape head (280) relative to the tape (256). Further, the control system (270) controls the position of the tape head (280) relative to the tape (256) without the use of a feed-forward sensor.

摘要翻译： 接收具有带（256）的带盒（42）的磁带驱动器（232）包括磁带头（280）和控制系统（270）。 带头（280）在磁带驱动器（232）和磁带（256）之间传送数据。 控制系统（270）利用线性参数化来控制带头（280）相对于带（256）的位置。 控制系统（270）可以包括补偿器（J）和过滤器（Q）。 补偿器（J）是包含在标称控制系统（370A）中的信息与包含在伺服系统（370B）的模型中的信息的组合。 伺服系统（370B）的模型估计了影响控制系统的跟踪能力的系统扰动（270）。 滤波器（Q）对所估计的系统干扰进行滤波以产生经滤波的系统干扰信号。 滤波后的系统干扰信号用于调整补偿器（J）的输出。 另外，控制系统（270）可以利用Youla-Kucera参数化来控制磁带头（280）相对于磁带（256）的位置。 此外，控制系统（270）不使用前馈传感器来控制带头（280）相对于带（256）的位置。

公开(公告)号：US20120087031A1

公开(公告)日：2012-04-12

申请号：US12900919

申请日：2010-10-08

申请人： Turguy Goker ,  Ming-chih Weng ,  Umang Mehta ,  Ryan Taylor

发明人： Turguy Goker ,  Ming-chih Weng ,  Umang Mehta ,  Ryan Taylor

IPC分类号： G11B5/09

CPC分类号： G11B5/584 ,  G11B20/10046

摘要： An apparatus and method for providing adaptive disturbance compensation with multi-rate synchronized sampling is disclosed herein. The dynamic disturbance occurring in a media drive during read/write operations is attenuated using the adaptive disturbance compensation scheme. A plurality of compensation filters are used, each of the compensation filters configured to attenuate a disturbance caused by a particular source within the media drive. Each of the compensation filters is computed based on a sampling rate relevant to the respective disturbances.

摘要翻译： 本文公开了一种用多速率同步采样提供自适应干扰补偿的装置和方法。 在读/写操作期间在介质驱动器中发生的动态干扰使用自适应干扰补偿方案被衰减。 使用多个补偿滤波器，每个补偿滤波器被配置为衰减由介质驱动器内的特定源引起的干扰。 基于与相应干扰相关的采样率来计算每个补偿滤波器。

公开(公告)号：US20100042360A1

公开(公告)日：2010-02-18

申请号：US12191823

申请日：2008-08-14

申请人： Ming-chih Weng ,  Turguy Goker ,  James Mark Decot ,  Minh Vu ,  John A. Hamming

发明人： Ming-chih Weng ,  Turguy Goker ,  James Mark Decot ,  Minh Vu ,  John A. Hamming

IPC分类号： G01B21/10 ,  G01P3/00

CPC分类号： G11B15/32 ,  G11B15/46

摘要： In a method of electronically measuring reel off-center run-out and reel hub mismatch, tape speed data related to a tape coupled with an operating drive reel is electronically measured. The tape speed data is correlated with drive reel rotation angles. The correlated tape speed data is translated to drive reel hub radii variations with respect to the drive reel rotation angles. The drive reel hub radii variations comprise an operational measure of reel off-center run-out and reel hub mismatch of the drive reel.

摘要翻译： 在电子测量卷轴偏心径向和卷轴轮毂不匹配的方法中，电子测量与与操作驱动卷轴耦合的带相关的带速度数据。 磁带速度数据与驱动卷轴旋转角度相关。 相关的带速度数据被转换为驱动相对于驱动卷轴旋转角度的卷轴毂半径变化。 驱动器卷轴毂半径变化包括驱动卷轴的卷轴偏心偏心和卷轴毂不匹配的操作测量。

公开(公告)号：US07477474B2

公开(公告)日：2009-01-13

申请号：US11692723

申请日：2007-03-28

申请人： Turguy Goker ,  Ming-chih Weng ,  Jerry Hodges

发明人： Turguy Goker ,  Ming-chih Weng ,  Jerry Hodges

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： The present invention, in particular embodiments, is directed to methods, apparatuses and systems that facilitate recording of servo signals on a recording medium such as magnetic tape with high accuracy. Variation of inter-frame and intra-frame placement is substantially reduced by writing successive frames or sub-frames based on a detection of a previously-written frame or sub-frame by a read element. Appropriate placement of the read element in relation to servo write elements, on a multi-gap servo write head, ensures the correct placement of subsequent frames on the recording medium.

摘要翻译： 本发明在特定实施例中涉及便于在诸如磁带的记录介质上以高精度记录伺服信号的方法，装置和系统。 基于通过读取元素对先前写入的帧或子帧的检测来写入连续的帧或子帧，帧间和帧内放置的变化大大减少。 在多间隙伺服写入头上，读取元件相对于伺服写入元件的适当放置确保了后续帧在记录介质上的正确放置。

公开(公告)号：US20070285831A1

公开(公告)日：2007-12-13

申请号：US11550530

申请日：2006-10-18

申请人： Turguy Goker ,  Ming-chih Weng ,  Jerry Hodges ,  Kempton Redhead

发明人： Turguy Goker ,  Ming-chih Weng ,  Jerry Hodges ,  Kempton Redhead

IPC分类号： G11B5/584 ,  G11B20/20

CPC分类号： G11B5/584 ,  G11B5/00826 ,  G11B5/56

摘要： An example embodiment provides for an apparatus and method, for use in a tape drive system, that supplies tape azimuth error information transduced from servo read elements that are located on differing bumps of a magnetic read/write head. Non-azimuth error information is also transduced from servo read elements located on a read bump. The azimuth error and non-azimuth are utilized to correctly place the magnetic head at a currently selected track of the tape for which data is being written. In one implementation, the servo read elements utilized for transducing the azimuth information are substantially aligned with each other relative to a tape path and disposed on separate bumps. In another implementation, the servo read elements utilized for transducing the azimuth information are not substantially aligned with each other and are disposed diagonally on opposite bumps.

摘要翻译： 示例性实施例提供了一种在磁带驱动系统中使用的装置和方法，其提供从位于磁读/写磁头的不同凸块上的伺服读取元件转换的磁带方位误差信息。 非方位误差信息也从位于读凸块上的伺服读取元件转换。 方位角误差和非方位角被用于将磁头正确地放置在正在写入数据的磁带的当前选定轨道上。 在一个实施方式中，用于转换方位信息的伺服读取元件相对于磁带路径彼此基本对齐并且设置在单独的凸块上。 在另一实施方式中，用于转换方位信息的伺服读取元件基本上不对准，并且对角地设置在相对的凸块上。

公开(公告)号：US07180708B1

公开(公告)日：2007-02-20

申请号：US11136836

申请日：2005-05-24

申请人： Ashok B. Nayak ,  Ming-chih Weng

发明人： Ashok B. Nayak ,  Ming-chih Weng

IPC分类号： G11B15/60 ,  B65H23/04 ,  G11B15/67

CPC分类号： G11B15/62 ,  G11B15/602 ,  G11B15/605 ,  G11B15/67 ,  G11B15/673

摘要： A tape drive is provided having a pair of stationary guide assemblies disposed symmetrically about the magnetic read/write head. Each of the stationary guide assemblies has a mounting portion and a separate guide surface portion mounted on the mounting portion. The mounting portion may be made of a plastic and the guide surface portion of a ceramic, for example. A spring arrangement with pressure pads is mounted directly on the mounting portion, and applies pressure to a top edge of a tape during guiding of the tape.

摘要翻译： 提供了带驱动器，其具有围绕磁读/写头对称设置的一对固定引导组件。 每个固定引导组件具有安装部分和安装在安装部分上的单独的引导表面部分。 安装部分可以由塑料制成，例如陶瓷的引导表面部分。 具有压力垫的弹簧装置直接安装在安装部分上，并且在引导带时将压力施加到带的顶部边缘。

公开(公告)号：US06886766B1

公开(公告)日：2005-05-03

申请号：US10342286

申请日：2003-01-15

申请人： Ming-chih Weng ,  Ashok B. Nayak

发明人： Ming-chih Weng ,  Ashok B. Nayak

IPC分类号： G11B15/60 ,  G11B15/67

CPC分类号： G11B15/602

摘要： A tape drive with a tape guiding assembly guides tape past the read/write head along a tape path. First and second inner guide rollers are disposed along the tape path on opposite sides of the read/write head and adjacent to the read/write head. First and second outer guides are disposed along the tape path on opposite sides of the read/write head. The inner guides are positioned off-centered with respect to the nominal tape path, while the outer guides are centered on the nominal tape path. The inner guides are adjustable in height and in radial direction to adjust the off-center position of the inner guides, as well as the tape wrap and penetration of the read/write head into the tape.

摘要翻译： 具有带引导组件的磁带驱动器沿着磁带路径引导磁带经过读/写头。 第一和第二内导辊沿着磁带路径设置在读/写头的相对侧上并与读/写头相邻。 第一和第二外部引导件沿着读取/写入头的相对侧上的带路径设置。 内部引导件相对于标称带路径偏心定位，而外引导件在标称磁带路径上居中。 内部引导件可在高度和径向方向上调节，以调整内部引导件的偏心位置，以及读/写头进入磁带的磁带包扎和穿透。

公开(公告)号：US08599519B2

公开(公告)日：2013-12-03

申请号：US13249627

申请日：2011-09-30

申请人： Ashok B. Nayak ,  Turguy Goker ,  Ming-Chih Weng ,  James Mark Decot

发明人： Ashok B. Nayak ,  Turguy Goker ,  Ming-Chih Weng ,  James Mark Decot

IPC分类号： G11B21/24

CPC分类号： G11B5/56 ,  G11B5/53 ,  G11B5/584

摘要： A head rotator assembly (22) for positioning a head (20) of a tape drive (10) relative to a storage tape includes a head supporter (230) and a supporter mover assembly (232). The head supporter (230) is coupled to and supports the head (20). The supporter mover assembly (232) rotates a portion of the head supporter (230) about an axis (241) to move the head (20) in an azimuth direction relative to the storage tape as the storage tape moves over the head (20). The head rotator assembly (22) includes a controller (16) that controls movement of the supporter mover assembly (232) based on a positioning signal. The supporter mover assembly (232) can include a first actuator (234A) that moves a first lever (236A) to rotate the head supporter (230) to move the head (20) in the azimuth direction. The first actuator (234A) biases the first lever (236A) to rotate part of the head supporter (230) to move the head in the azimuth direction.

摘要翻译： 用于相对于存储带定位磁带驱动器（10）的头部（20）的头部旋转器组件（22）包括头部支撑件（230）和支撑件移动器组件（232）。 头部支撑件（230）联接并支撑头部（20）。 当存储带移动到头部（20）上时，支撑器移动器组件（232）使头部支撑件（230）的一部分围绕轴线（241）旋转，以使头部（20）相对于存储带在方位角方向上移动， 。 头部旋转器组件（22）包括控制器（16），该控制器基于定位信号来控制支撑器移动器组件（232）的移动。 支撑器移动器组件（232）可以包括第一致动器（234A），其移动第一杆（236A）以旋转头部支撑件（230）以使头部（20）沿方位角方向移动。 第一致动器（234A）偏压第一杆（236A）以旋转头部支撑件（230）的一部分，以使头部在方位角方向上移动。

公开(公告)号：US08154811B2

公开(公告)日：2012-04-10

申请号：US12414491

申请日：2009-03-30

申请人： Matt Barsotti ,  Turguy Goker ,  Carl Hoerger ,  Jeff McAllister ,  Ming-Chih Weng

发明人： Matt Barsotti ,  Turguy Goker ,  Carl Hoerger ,  Jeff McAllister ,  Ming-Chih Weng

IPC分类号： G11B27/36

CPC分类号： G11B27/36 ,  G11B5/00817 ,  G11B5/09 ,  G11B20/10009 ,  G11B27/107 ,  G11B2220/93

摘要： In a method of electronically measuring reader/writer offset in a tape drive head, a plurality of sequentially adjacent data tracks are written on a tape with a write head. Error rate information is measured while reading a data track of the plurality of sequentially adjacent data tracks with a read head of the tape drive. A bathtub shaped curve is built from a set of the error rate information which is accumulated by reading the data track at a plurality of offsets of the read head relative to the data track. Offset of the read head relative to the write head is measured by determining an offset of the read head which correlates to a magnetic center of the data track as represented by a center point between edges of the bathtub shaped curve.

摘要翻译： 在磁带驱动头中电子测量读取/写入器偏移的方法中，多个顺序相邻的数据磁道用写入头写入带上。 在利用磁带驱动器的读取头读取多个顺序相邻数据磁道的数据磁道的同时测量错误率信息。 由一组错误率信息建立一个浴缸形曲线，该组错误率信息是通过在相对于数据轨道的读取头的多个偏移量下读取数据轨迹来累积的。 通过确定与浴缸形曲线的边缘之间的中心点所表示的与数据轨道的磁心相关的读头的偏移来测量读头相对于写头的偏移。

公开(公告)号：US20100309579A1

公开(公告)日：2010-12-09

申请号：US12480475

申请日：2009-06-08

申请人： Ashok B. Nayak ,  Ming-Chih Weng ,  Turguy Goker

发明人： Ashok B. Nayak ,  Ming-Chih Weng ,  Turguy Goker

IPC分类号： G11B21/02

CPC分类号： G11B5/584

摘要： An actuator assembly (22) for positioning a head (16) of a tape drive (10) relative to a storage tape that moves along a tape path (24) includes a first actuator (228), a second actuator (230) and a controller (26). The actuators (228, 230) move the head (16) in a direction that is substantially perpendicular to the tape path. The first actuator (228) is mounted to the second actuator (230) at a location that is based on a position of a resonance node (680) of the second actuator (230). The controller (26) controls linear positioning of the first actuator (228) and the second actuator (230) relative to the storage tape on a closed-loop basis. The actuators (228, 230) can each include voice coils (246, 260). The second actuator (230) can include two positioner guides (253A, 253B) that are configured in a substantially collinear configuration or in a triangular configuration with the head (16). The first actuator (228) can include an isolation boot (232) that decreases vibration of the first actuator (228) caused by vibration of the second actuator (230). The actuators (228, 230) can have resonance frequencies that are different from one another. The first fundamental resonance frequency can be tuned based on the second resonance frequency to decrease a correlation between the resonances of the actuators (228, 230).

摘要翻译： 用于相对于沿着带路径（24）移动的存储带定位磁带驱动器（10）的头部（16）的致动器组件（22）包括第一致动器（228），第二致动器（230）和 控制器（26）。 致动器（228,230）在基本上垂直于磁带路径的方向上移动磁头（16）。 第一致动器（228）在基于第二致动器（230）的谐振节点（680）的位置的位置处安装到第二致动器（230）。 控制器（26）基于闭环控制第一致动器（228）和第二致动器（230）相对于存储带的线性定位。 致动器（228,230）可以各自包括音圈（246,260）。 第二致动器（230）可以包括两个定位器引导件（253A，253B），其被配置为具有头部（16）的大致共线构型或三角形构造。 第一致动器（228）可以包括隔离罩（232），其减小由第二致动器（230）的振动引起的第一致动器（228）的振动。 致动器（228,230）可以具有彼此不同的共振频率。 可以基于第二共振频率来调整第一基本共振频率，以减小致动器（228,230）的共振之间的相关性。