公开(公告)号：US07948706B2

公开(公告)日：2011-05-24

申请号：US12482312

申请日：2009-06-10

申请人： Steven Ross Bentley ,  Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Keisuke Tanaka

发明人： Steven Ross Bentley ,  Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta ,  Keisuke Tanaka

IPC分类号： G11B20/20

CPC分类号： G11B20/10009 ,  G11B5/0083 ,  G11B5/584 ,  G11B20/20 ,  G11B2020/1281 ,  G11B2020/1287 ,  G11B2220/93

摘要： A method to adjust the orientation of a read head comprising a first read element and a second read element, wherein the first read element and the second read element are separated by a distance, wherein the method moves a sequential information storage medium adjacent to the read head, determines a skew angle for the sequential information storage medium with respect to the read head using the first read element and the second read element, and encodes that skew angle in a computer readable medium.

摘要翻译： 一种用于调整包括第一读取元件和第二读取元件的读取头的取向的方法，其中所述第一读取元件和所述第二读取元件被分开一定距离，其中所述方法移动与所述读取元件相邻的顺序信息存储介质 头部使用第一读取元件和第二读取元件确定顺序信息存储介质相对于读取头的歪斜角度，并将该歪斜角度编码在计算机可读介质中。

公开(公告)号：US07920356B2

公开(公告)日：2011-04-05

申请号：US12024125

申请日：2008-02-01

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A method and a system are provided for writing a plurality of servo bands on magnetic tape. The magnetic tape is moved longitudinally relative to at least one servo write head. The servo write head is positioned to write a plurality of parallel longitudinal servo bands. The plurality of servo bands comprise odd servo bands and even servo bands, and each of the odd servo bands lie between the each of the even servo bands. The at least one servo write head is operated to write the plurality of parallel longitudinal servo bands on the magnetic tape such that each of the plurality of servo bands comprise a plurality of frames, wherein each frame comprises a plurality of bursts of transition stripes, and each burst has a first transition stripe. The first transition stripe of each burst of each the odd servo band is longitudinally shifted from the first transition stripe of each burst of each even servo band by a substantially equal distance, D, such that servo information of the odd servo bands is interleaved with the servo information from the even servo bands.

摘要翻译： 提供了一种在磁带上写入多个伺服带的方法和系统。 磁带相对于至少一个伺服写头纵向移动。 伺服写入头被定位成写入多个平行的纵向伺服带。 多个伺服频带包括奇数伺服频带和偶数伺服频带，并且每个奇数伺服频带位于每个偶数伺服频带之间。 操作至少一个伺服写入头以将多个平行纵向伺服频带写入磁带上，使得多个伺服频带中的每一个包括多个帧，其中每个帧包括多个过渡条纹脉冲串，以及 每个突发都有一个第一个过渡条纹。 每个奇数伺服频带的每个脉冲串的第一个转移条纹从每个偶数伺服频带的每个脉冲串的第一转移条带纵向移位大致相等的距离D，使得奇数伺服带的伺服信息与 来自偶数伺服带的伺服信息。

公开(公告)号：US20090190250A1

公开(公告)日：2009-07-30

申请号：US12020961

申请日：2008-01-28

申请人： Nhan Xuan Bui ,  Robert Allen Hutchins ,  Melanie Jean Sandberg ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Robert Allen Hutchins ,  Melanie Jean Sandberg ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B5/00813

摘要： A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially incremented by one if a tape is moving in a forward direction and decremented by one if the tape is moving in a backward direction. This sequential property of the LPOS information lends itself to LPOS prediction, where the LPOS prediction is the previous LPOS value plus one if the tape is moving forward and the previous LPOS value minus one if the tape is moving backward. Even if the LPOS words from the two servo channels are both bad, but not all of the bits in the LPOS word are bad. The system uses the remaining good bits from the two servo channels to verify all of the bits of the LPOS prediction word.

摘要翻译： 即使磁带驱动系统的两个伺服通道都由于缺陷而无法检测到LPOS信息，也能够可靠地再现LPOS信息的磁带驱动系统。 如果磁带正向移动，则系统识别LPOS序列依次增加1，如果磁带沿向后方向移动，则LPOS序列递减1。 LPOS信息的这种顺序属性适用于LPOS预测，其中LPOS预测是先前的LPOS值，如果磁带正向前移动，则前一LPOS值减去1，如果磁带向后移动，则前一LPOS值减1。 即使来自两个伺服通道的LPOS字都是坏的，但LPOS字中的所有位都不好。 该系统使用来自两个伺服通道的剩余良好位来验证LPOS预测字的所有位。

公开(公告)号：US20090190244A1

公开(公告)日：2009-07-30

申请号：US12022330

申请日：2008-01-30

申请人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Reed Alan Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B27/36

CPC分类号： G11B15/54

摘要： An apparatus, system, and method are disclosed for dynamic tape stick and tape break detection. A first counter increments a first count and resets a second count in response to a sensor pulse from a first sensor of a first tape servo. A second counter increments the second count and resets the first count in response to a sensor pulse from a second sensor of a second tape servo. A detection module detects either the first count or the second count exceeding an error threshold.

摘要翻译： 公开了用于动态胶带和胶带断裂检测的装置，系统和方法。 第一计数器增加第一计数并且响应于来自第一磁带伺服器的第一传感器的传感器脉冲重置第二计数。 第二计数器增加第二计数并且响应于来自第二磁带伺服器的第二传感器的传感器脉冲重置第一计数。 检测模块检测到超过错误阈值的第一计数或第二计数。

公开(公告)号：US07364106B2

公开(公告)日：2008-04-29

申请号：US11674615

申请日：2007-02-13

申请人： Nhan Xuan Bui ,  Junichi Fukuda ,  Randy Clark Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Junichi Fukuda ,  Randy Clark Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B15/18

CPC分类号： G11B15/093

摘要： Disclosed are a system, a method, and an article of manufacture to provide for the detection and compensation of tape breakage in a tape drive. The invention operates by simultaneously monitoring the tape reel rotation direction and the ratio of rotation between the tape reels. If the rotation direction is not the same for both reels, then tape breakage is indicated and reel rotation ceases. Tape breakage is also detected if the tape reel angular rotation ratio between the supply and take up reels is not within a specified tape reel ratio range. The tape reel angular rotation ratio is detected by simultaneously measuring the angular rotation of each tape reel in a specified time period and then calculating the ratio. The present invention detects the tape reel angular rotation ratio and if tape reel angular rotation ratio is outside of the specified tape reel ratio range, tape breakage is indicated and reel rotation ceases.

摘要翻译： 公开了一种用于提供磁带驱动器中的磁带破损的检测和补偿的系统，方法和制品。 本发明通过同时监测磁带卷轴的旋转方向和磁带盘之间的旋转比来操作。 如果两个卷轴的旋转方向不一致，则表示带子断裂，并且卷轴旋转停止。 如果供纸卷取卷轴之间的磁带卷轴角度旋转比不在指定的磁带卷盘比范围内，则也会检测到磁带断线。 通过在规定的时间段内同时测量每个磁带卷轴的角度旋转，然后计算该比率来检测磁带卷轴角度旋转比。 本发明检测磁带卷轴的角度旋转比，如果磁带卷轴角度旋转比在指定的磁带卷盘比例范围之外，则表示磁带破损并且卷轴旋转停止。

公开(公告)号：US20080055759A1

公开(公告)日：2008-03-06

申请号：US11469133

申请日：2006-08-31

申请人： Nhan Xuan Bui ,  Roy Daron Cideciyan ,  Robert Allen Hutchins ,  Thomas Mittelholzer ,  Kazuhiro Tsuruta

发明人： Nhan Xuan Bui ,  Roy Daron Cideciyan ,  Robert Allen Hutchins ,  Thomas Mittelholzer ,  Kazuhiro Tsuruta

IPC分类号： G11B5/09

CPC分类号： G11B20/1407 ,  G11B5/584 ,  G11B20/1492 ,  G11B2020/1284 ,  G11B2020/1484 ,  G11B2220/90

摘要： An apparatus, system, and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module transforms the plurality of values into transformed values. A confinement module confines the values to a limited set of confined values. A correlation module correlates the confined values with a plurality of instances of the periodic sequence. In addition, a selection module selects an instance of the periodic sequence with the highest correlation to the confined values as an observed periodic sequence.

摘要翻译： 公开了用于检测周期性序列的装置，系统和方法。 值检测器模块检测周期性序列的多个值。 在一个实施例中，变换模块将多个值转换为变换值。 限制模块将值限制为有限的一组限制值。 相关模块将约束值与周期性序列的多个实例相关联。 此外，选择模块选择具有与限定值的最高相关性的周期性序列的实例作为观察到的周期性序列。

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。

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。

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。

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。