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61. 发明授权

US08134797B2 Application of continuous position error offset signal to acquire servo track 失效
标题翻译：应用连续位置误差偏移信号采集伺服轨迹
公开(公告)号：US08134797B2
公开(公告)日：2012-03-13
申请号：US12716956
申请日：2010-03-03
申请人： Nhan Xuan Bui , Randy Clark Inch , Eiji Ogura
发明人： Nhan Xuan Bui , Randy Clark Inch , Eiji Ogura
IPC分类号： G11B5/55 , G11B5/584
CPC分类号： G11B5/584
摘要： The method employs a servo system for positioning a head laterally to follow lateral motion of a longitudinal tape having longitudinal defined servo track(s), the servo system comprising a servo element configured to sense lateral position of the head with respect to an acquired servo track, a fine actuator configured to translate the head laterally with respect to the longitudinal tape, and a position error signal loop to operate the fine actuator to translate the head laterally to reduce position error. If the servo element is positioned away from the defined servo track(s), a continuous position error offset signal is applied to the fine actuator in a direction towards the defined servo track(s), whereby the fine actuator translates the head in accordance with the continuous position error offset signal; and, in response to the servo system acquiring the defined servo track(s), the continuous position error offset signal is discontinued.
摘要翻译：该方法采用伺服系统来横向定位头部以跟随具有纵向限定的伺服轨道的纵向带的侧向运动，该伺服系统包括伺服元件，该伺服元件被配置为感测头部相对于所获取的伺服轨道的横向位置，精细致动器，被配置为相对于纵向带横向地平移头部;以及位置误差信号回路，用于操作精细致动器以横向平移头部以减少位置误差。如果伺服元件远离定义的伺服轨道定位，则连续的位置误差偏移信号在朝向所定义的伺服轨道的方向上被施加到精细致动器，由此精细致动器根据连续位置误差偏移信号; 并且响应于伺服系统获取所定义的伺服轨迹，连续位置误差偏移信号被停止。

62. 发明授权

US07990644B2 Apparatus and method to decode linear position information encoded in a sequential information storage medium 失效
标题翻译：解码在顺序信息存储介质中编码的线性位置信息的装置和方法
公开(公告)号：US07990644B2
公开(公告)日：2011-08-02
申请号：US12040606
申请日：2008-02-29
申请人： Nhan Xuan Bui , Robert Allen Hutchins, III , Malanie Jean Sandberg , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Robert Allen Hutchins, III , Malanie Jean Sandberg , Kazuhiro Tsuruta
IPC分类号： G11B5/09 , G11B5/584
CPC分类号： G11B5/584 , G11B20/12 , G11B2020/1282
摘要： A method to decode linear position (“LPOS”) information encoded in a sequential information storage medium, by detecting each of one or a plurality of sequential first LPOS servo patterns encoded in a first servo band using a first servo sensor in communication with a first servo channel. While detecting that one or a plurality of first LPOS servo patterns, the method fails to detect (n) second LPOS servo patterns encoded in a second servo band. The method determines a value for (n), and then syncs the first servo channel with the second servo channel using that value of (n).
摘要翻译：一种通过使用第一伺服传感器检测在第一伺服频带中编码的一个或多个连续的第一LPOS伺服模式中的每一个解码在顺序信息存储介质中编码的线性位置（“LPOS”）信息的方法，所述第一伺服传感器与第一伺服通道。在检测到一个或多个第一LPOS伺服模式的同时，该方法不能检测（n）在第二伺服带中编码的第二LPOS伺服模式。该方法确定（n）的值，然后使用该值（n）与第二伺服信道同步第一伺服信道。

63. 发明授权

US07764460B2 Adjusting read heads based on misregistration calculated from servo patterns 有权
标题翻译：根据伺服模式计算出的重合误差调整读头
公开(公告)号：US07764460B2
公开(公告)日：2010-07-27
申请号：US12212568
申请日：2008-09-17
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： Provided are a method, storage controller, and tape drive for adjusting read heads based on misregistration calculated from servo patterns. A plurality of first read heads read a plurality of servo patterns on a storage medium. A determination is made from the read servo patterns a skew at which the first read heads are positioned with respect to the servo patterns written to the storage medium. A determination is made of an adjustment factor to eliminate the determined skew. A plurality of second read heads that read the storage medium are adjusted by the adjustment factor.
摘要翻译：提供了一种用于基于从伺服模式计算的重新排列来调整读取头的方法，存储控制器和磁带驱动器。多个第一读取头在存储介质上读取多个伺服图案。从读取的伺服模式确定第一读取头相对于写入存储介质的伺服模式的位置偏移。确定调整因子以消除确定的偏差。通过调节因子来调整读取存储介质的多个第二读取头。

64. 发明申请

US20080186610A1 APPARATUS, SYSTEM, AND METHOD FOR AN "M" SERVO PATTERN 审中-公开
标题翻译： “M”伺服图案的装置，系统和方法
公开(公告)号：US20080186610A1
公开(公告)日：2008-08-07
申请号：US11670913
申请日：2007-02-02
申请人： Nhan Xuan Bui , Robert Allen Hutchins , Mark Allan Taylor
发明人： Nhan Xuan Bui , Robert Allen Hutchins , Mark Allan Taylor
IPC分类号： G11B5/02
CPC分类号： G11B5/584
摘要： An apparatus, system, and method are disclosed for an “M” servo pattern. A servo pattern write module is included to simultaneously create a first servo mark, a second servo mark, a third servo mark, and a fourth servo mark in an “M” servo pattern on a magnetic tape. The magnetic tape is configured to store data. The first, second, third, and fourth servo marks are substantially linear and are substantially the same length. The first and third servo marks are positioned with a forward slope comprising first and third legs of the “M” pattern. The second and fourth servo marks are positioned with a backward slope comprising second and fourth legs of the “M” pattern. Distances between center points of the first and second servo marks, second and third servo marks, and third and fourth servo marks are substantially the same.
摘要翻译：公开了一种用于“M”伺服模式的装置，系统和方法。包括伺服模式写入模块，以在磁带上的“M”伺服模式中同时创建第一伺服标记，第二伺服标记，第三伺服标记和第四伺服标记。磁带被配置为存储数据。第一，第二，第三和第四伺服标记基本上是线性的并且基本上是相同的长度。第一和第三伺服标记被定位成具有包括“M”图案的第一和第三支腿的前斜面。第二和第四伺服标记被定位成具有包括“M”图案的第二和第四腿的后向斜率。第一和第二伺服标记，第二和第三伺服标记以及第三和第四伺服标记的中心点之间的距离基本相同。

65. 发明授权

US07102847B2 Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns 有权
公开(公告)号：US07102847B2
公开(公告)日：2006-09-05
申请号：US11215456
申请日：2005-08-29
申请人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B5/09
CPC分类号： G11B5/584 , G11B5/00813 , G11B5/78
摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.

66. 发明授权

US06052345A System for compensating for hard sector noise degradation of tracking error signals in an optical data storage system 有权
标题翻译：用于补偿光学数据存储系统中跟踪误差信号的硬扇区噪声劣化的系统
公开(公告)号：US06052345A
公开(公告)日：2000-04-18
申请号：US261927
申请日：1999-03-03
申请人： Allen Keith Bates , Nhan Xuan Bui , Alan August Fennema , Tetsuo Semba
发明人： Allen Keith Bates , Nhan Xuan Bui , Alan August Fennema , Tetsuo Semba
IPC分类号： G11B11/10 , G11B7/085 , G11B7/09 , G11B11/105
CPC分类号： G11B7/08541 , G11B11/10563 , G11B11/10576 , G11B11/10597 , G11B7/0901
摘要： The invention provides a system for compensating for hard sector noise degradation of tracking error signals in an optical data storage system. The system includes a hard sector detection circuit which generates a first output signal in response to receiving a first input signal representing detection of a hard sector on a magneto-optical disk; a logic circuit which generates a second output signal in response to receiving the first output signal and a second input signal; and a tracking error signal reconstruction circuit which generates an approximated tracking error signal in response to receiving a tracking error signal and the second output signal. The invention may be embodied as hardwired circuitry or as a combination of hardware and software embodied in a computer readable medium and implemented in a digital computer.
摘要翻译：本发明提供了一种用于补偿光学数据存储系统中跟踪误差信号的硬扇区噪声劣化的系统。该系统包括：硬扇区检测电路，响应于接收表示磁光盘上的硬扇区的检测的第一输入信号，产生第一输出信号; 响应于接收到第一输出信号和第二输入信号而产生第二输出信号的逻辑电路; 以及跟踪误差信号重建电路，其响应于接收到跟踪误差信号和所述第二输出信号而产生近似跟踪误差信号。本发明可以实现为硬连线电路或者体现在计算机可读介质中并在数字计算机中实现的硬件和软件的组合。

67. 发明授权

US08902531B2 Dynamically controlling tape velocity 有权
标题翻译：动态控制胶卷速度
公开(公告)号：US08902531B2
公开(公告)日：2014-12-02
申请号：US13596876
申请日：2012-08-28
申请人： Nhan Xuan Bui , Kevin Bruce Judd , Roger Javier Justo , Hirokazu Nakayama , Tomoko Taketomi
发明人： Nhan Xuan Bui , Kevin Bruce Judd , Roger Javier Justo , Hirokazu Nakayama , Tomoko Taketomi
IPC分类号： G11B15/46
CPC分类号： G11B15/06 , G11B5/584 , G11B15/20 , G11B15/46 , G11B15/52
摘要： A maximum velocity is dynamically determined during a tape drive operation to obtain a statistical standard deviation of a position error signal (PES) that yields an amount of stopwrite (SW) operations that avoids backhitching. The tape velocity is adjusted to the maximum velocity.
摘要翻译：在磁带驱动操作期间动态地确定最大速度，以获得产生避免反向干扰的停止写（SW）操作量的位置误差信号（PES）的统计标准偏差。磁带速度被调整到最大速度。

68. 发明申请

US20100067139A1 ADJUSTING READ HEADS BASED ON MISREGISTRATION CALCULATED FROM SERVO PATTERNS 有权
标题翻译：基于从伺服模式计算的误差调整阅读头
公开(公告)号：US20100067139A1
公开(公告)日：2010-03-18
申请号：US12212568
申请日：2008-09-17
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： G11B15/18
CPC分类号： G11B5/584
摘要： Provided are a method, storage controller, and tape drive for adjusting read heads based on misregistration calculated from servo patterns. A plurality of first read heads read a plurality of servo patterns on a storage medium. A determination is made from the read servo patterns a skew at which the first read heads are positioned with respect to the servo patterns written to the storage medium. A determination is made of an adjustment factor to eliminate the determined skew. A plurality of second read heads that read the storage medium are adjusted by the adjustment factor.
摘要翻译：提供了一种用于基于从伺服模式计算的重新排列来调整读取头的方法，存储控制器和磁带驱动器。多个第一读取头在存储介质上读取多个伺服图案。从读取的伺服模式确定第一读取头相对于写入存储介质的伺服模式的位置偏移。确定调整因子以消除确定的偏差。通过调节因子来调整读取存储介质的多个第二读取头。

69. 发明授权

US07675255B2 Back EMF reduction in a storage drive using pulse width modulation in a closed loop motor control system 有权
标题翻译：在闭环电动机控制系统中使用脉冲宽度调制的存储驱动器中的EMF减小
公开(公告)号：US07675255B2
公开(公告)日：2010-03-09
申请号：US11669615
申请日：2007-01-31
申请人： Allen K. Bates , Nhan Xuan Bui , Reed A. Hancock , Louis P. Russo
发明人： Allen K. Bates , Nhan Xuan Bui , Reed A. Hancock , Louis P. Russo
IPC分类号： H02P3/00
CPC分类号： H02P6/24 , G11B15/22 , G11B15/48
摘要： A storage drive implements a method for a BEMF voltage reduction during a deceleration period of an electric motor of the storage drive. In operation, the electric motor is disconnected from a power supply during an entirety of the deceleration period of the electric motor to prevent any flow of a BEMF current into the power supply, and the electric motor is connected to a power return during a segment or an entirety of the deceleration period of the electric motor to dissipate any BEMF voltage within the electric motor.
摘要翻译：存储驱动器在存储驱动器的电动机的减速期间实施用于BEMF电压降低的方法。在电动机的整个减速期间，电动机与电源断开，以防止BEMF电流流向电源，电动马达与电力回路连接，电动机的整个减速期间，以耗散电动机内的任何BEMF电压。

70. 发明授权

US07605992B2 Robust LPOS detection with predictor and bit verifier 失效
标题翻译：具有预测器和位验证器的鲁棒LPOS检测
公开(公告)号：US07605992B2
公开(公告)日：2009-10-20
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： G11B5/09
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。

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