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1. 发明授权

US07230783B2 Mitigation of MR read head distortion 失效
标题翻译：减少MR读头失真
公开(公告)号：US07230783B2
公开(公告)日：2007-06-12
申请号：US11154123
申请日：2005-06-16
申请人： Josephine Faith Bayang , Ernest Stewart Gale , David Lee Swanson
发明人： Josephine Faith Bayang , Ernest Stewart Gale , David Lee Swanson
IPC分类号： G11B5/09 , G11B5/035
CPC分类号： G11B5/09 , G11B5/00813 , G11B20/10009 , G11B2005/0013
摘要： Mitigation of distortion of read signals from magneto-resistive read head(s) are provided in various embodiments of the present invention. In one embodiment, the read signals provided to a read channel having an analog to digital converter and digital equalizer. Digital peak measurement apparatus is configured to sense the output of the digital equalizer, and provide average positive peak values and average negative peak values of the output. Control apparatus is configured to respond to the peak values, to iteratively determine asymmetry of the peak values and estimate the cancellation slope of the asymmetry and cancellation term relationship; from the measured asymmetry and estimated cancellation slope, to iteratively estimate the convergence cancellation term; and to feed back the convergence cancellation term to modify the digital read signals for the input of the digital equalizer to iteratively converge the asymmetry to substantially zero.
摘要翻译：在本发明的各种实施例中提供了从磁阻读取头读取信号的失真的缓解。在一个实施例中，提供给具有模数转换器和数字均衡器的读通道的读信号。数字峰值测量装置被配置为感测数字均衡器的输出，并且提供输出的平均正峰值和平均负峰值。控制装置被配置为响应峰值，迭代地确定峰值的不对称性并且估计不对称和消除项关系的抵消斜率; 从测量的不对称和估计的抵消斜率，迭代估计收敛消除项; 并且反馈收敛消除项以修改用于数字均衡器的输入的数字读取信号，以将不对称性迭代收敛到基本为零。

2. 发明授权

US07676445B2 Apparatus, system and method for developing failure prediction software 失效
标题翻译：用于开发故障预测软件的装置，系统和方法
公开(公告)号：US07676445B2
公开(公告)日：2010-03-09
申请号：US10644378
申请日：2003-08-20
申请人： Scott Milton Fry , Mark Edward Hill , David Lee Swanson
发明人： Scott Milton Fry , Mark Edward Hill , David Lee Swanson
IPC分类号： G06F9/44 , G06N7/02 , G06N7/06
CPC分类号： G06F11/3485 , G06F11/008
摘要： An apparatus, system, and method are provided for developing failure prediction software for a storage system. The present invention allows a user to edit and revise a failure prediction algorithm that includes fuzzy logic rules. The failure prediction algorithm is generated in a human readable format and uses terms and operators familiar to experts in the field of storage systems. In addition, the present invention generates the machine-readable code necessary to implement or test a draft failure prediction algorithm. If the results of the failure prediction algorithm are unsatisfactory, the user may revise the failure prediction algorithm and re-run the tests until the results correspond to expected results. In addition, the present invention includes a performance monitor, processor, and determination module. The performance monitor gathers performance data for a storage system. The processor executes the failure prediction algorithm on the performance data to produce a result. The determination module selectively forecasts failure of one or more components of the storage system in response to the result.
摘要翻译：提供了一种用于开发存储系统的故障预测软件的装置，系统和方法。本发明允许用户编辑和修改包括模糊逻辑规则的故障预测算法。故障预测算法以人类可读格式生成，并使用存储系统领域专家熟悉的术语和操作员。此外，本发明生成实现或测试草图失效预测算法所需的机器可读代码。如果故障预测算法的结果不能令人满意，则用户可以修改故障预测算法并重新运行测试，直到结果对应于预期结果。此外，本发明包括性能监视器，处理器和确定模块。性能监视器收集存储系统的性能数据。处理器对性能数据执行故障预测算法以产生结果。确定模块响应于结果选择性地预测存储系统的一个或多个组件的故障。

3. 发明授权

US07443623B2 Peak detection for magnetic tape timing based servo 失效
标题翻译：基于磁带定时伺服的峰值检测
公开(公告)号：US07443623B2
公开(公告)日：2008-10-28
申请号：US12048090
申请日：2008-03-13
申请人： Nhan Xuan Bui , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
发明人： Nhan Xuan Bui , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
IPC分类号： G11B5/09 , G11B5/584
CPC分类号： G11B5/584
摘要： Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to sense the digital converter(s), and provide positive peak values and negative peak values of the digitized servo signals; and control apparatus is configured to determine the greater of the provided positive peak values or negative peak values, and select servo signals having the greater values for a servo channel. Servo apparatus is configured to respond to the selected servo signals to control the lateral positioning of the servo read head(s).
摘要翻译：选择伺服信号，用于峰值检测用于磁头的定时伺服磁道，用于磁头相对于磁带的横向定位。来自读磁带的磁阻伺服读头的伺服信号由模拟数字转换器数字化; 数字峰值测量装置被配置为感测数字转换器，并且提供数字化伺服信号的正峰值和负峰值; 并且控制装置被配置为确定所提供的正峰值或负峰值中的较大值，并且选择对伺服信道具有较大值的伺服信号。伺服装置被配置为响应所选择的伺服信号以控制伺服读取头的横向定位。

4. 发明授权

US06842304B2 Measurement of write track width for magnetic tape head 失效
标题翻译：磁带头写入磁道宽度的测量
公开(公告)号：US06842304B2
公开(公告)日：2005-01-11
申请号：US10337722
申请日：2003-01-08
申请人： Alex Chliwnyj , Christopher Robert Pandolfo , David Lee Swanson , Steven Carter Wills
发明人： Alex Chliwnyj , Christopher Robert Pandolfo , David Lee Swanson , Steven Carter Wills
IPC分类号： G11B5/54 , G11B5/00 , G11B5/584 , G11B15/18
CPC分类号： G11B5/584
摘要： Width of a write track for a magnetic tape head is measured by writing a foreground magnetic track signal on a magnetic tape having a dissimilar background signal. A magnetic tape read head is moved from beyond one edge, laterally across, and beyond the opposite edge of the foreground track signal. Logic detects the read head encountering the one edge and the opposite edge of the foreground track signal; and determines, from an independent position sensor, the width of the foreground track signal as the lateral distance between the lateral position of the read head at one edge, and at the opposite edge of the foreground track signal.
摘要翻译：通过在具有不同背景信号的磁带上写入前景磁道信号来测量磁带头的写入磁道的宽度。磁带读取头从前景轨迹信号的相对边缘之外的一个边缘横向穿过并超出其移动。逻辑检测读取头遇到前景轨道信号的一个边缘和相对边缘; 并且从独立位置传感器确定前景轨道信号的宽度作为在一个边缘处的读取头的横向位置与前景轨道信号的相对边缘之间的横向距离。

5. 发明授权

US06903895B2 Tape drive servo operation by use of servo pattern width measurements 失效
标题翻译：磁带驱动伺服操作通过使用伺服模式宽度测量
公开(公告)号：US06903895B2
公开(公告)日：2005-06-07
申请号：US10424373
申请日：2003-04-28
申请人： Alex Chliwnyj , David Lee Swanson
发明人： Alex Chliwnyj , David Lee Swanson
IPC分类号： G11B5/584 , G11B27/36 , G11B5/55
CPC分类号： G11B5/584 , G11B27/36
摘要： A system, method and an article of manufacture to provide more accurate magnetic tape servo operation are disclosed. Accurate measurements of the width of the servo pattern written on the magnetic tape are accomplished in the presence of relatively large motion of the magnetic tape. The accurate measurements of the width of the servo pattern are used to produce a corrected position error signal that provides improved servo track following to maintain the tape head at an optimal alignment for writing and reading data tracks on the tape.
摘要翻译：公开了提供更准确的磁带伺服操作的系统，方法和制品。记录在磁带上的伺服模式的宽度的精确测量是在存在磁带相对大的运动的情况下完成的。使用伺服图案的宽度的精确测量来产生校正的位置误差信号，其提供改进的伺服轨迹，以将磁带头保持在用于在磁带上写入和读取数据轨道的最佳对准。

6. 发明申请

US20080158721A1 PEAK DETECTION FOR MAGNETIC TAPE TIMING BASED SERVO 失效
标题翻译：基于磁带时序的伺服器峰值检测
公开(公告)号：US20080158721A1
公开(公告)日：2008-07-03
申请号：US12048090
申请日：2008-03-13
申请人： NHAN XUAN BUI , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
发明人： NHAN XUAN BUI , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to sense the digital converter(s), and provide positive peak values and negative peak values of the digitized servo signals; and control apparatus is configured to determine the greater of the provided positive peak values or negative peak values, and select servo signals having the greater values for a servo channel. Servo apparatus is configured to respond to the selected servo signals to control the lateral positioning of the servo read head(s).
摘要翻译：选择伺服信号，用于峰值检测用于磁头的定时伺服磁道，用于磁头相对于磁带的横向定位。来自读磁带的磁阻伺服读头的伺服信号由模拟数字转换器数字化; 数字峰值测量装置被配置为感测数字转换器，并且提供数字化伺服信号的正峰值和负峰值; 并且控制装置被配置为确定所提供的正峰值或负峰值中的较大值，并且选择对于伺服信道具有较大值的伺服信号。伺服装置被配置为响应所选择的伺服信号以控制伺服读取头的横向定位。

7. 发明授权

US07369342B2 Peak detection for magnetic tape timing based servo 失效
公开(公告)号：US07369342B2
公开(公告)日：2008-05-06
申请号：US11286808
申请日：2005-11-22
申请人： Nhan Xuan Bui , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
发明人： Nhan Xuan Bui , Ernest Stewart Gale , Eiji Ogura , David Lee Swanson
IPC分类号： G11B5/09 , G11B5/584
CPC分类号： G11B5/584
摘要： Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to sense the digital converter(s), and provide positive peak values and negative peak values of the digitized servo signals; and control apparatus is configured to determine the greater of the provided positive peak values or negative peak values, and select servo signals having the greater values for a servo channel. Servo apparatus is configured to respond to the selected servo signals to control the lateral positioning of the servo read head(s).

8. 发明授权

US06831801B2 Eccentricity compensation in a web handling system 失效
标题翻译：网络处理系统中的偏心补偿
公开(公告)号：US06831801B2
公开(公告)日：2004-12-14
申请号：US10075260
申请日：2002-02-15
申请人： Alex Chliwnyj , David Michael Davis , David Lee Swanson
发明人： Alex Chliwnyj , David Michael Davis , David Lee Swanson
IPC分类号： G11B1543
CPC分类号： G11B15/43 , G11B15/1883
摘要： A control system compensates for web tension variation caused by a first spool, (A) determines rotational frequency of the first spool; (B) determines variation in rotational velocity at the second spool which occurs at the (A) first spool frequency; (C) determines the rotational position at the first spool corresponding to the (B) variation in rotational velocity at the second spool; (D) calculates a drive motor profile for the first spool which tends to cancel the (B) variation in rotational velocity at the second spool; and (E) superimposes the (D) drive motor profile on a first spool drive motor at the (C) determined rotational position of the first spool.
摘要翻译：控制系统补偿由第一卷轴引起的卷筒纸张力变化，（A）确定第一卷轴的旋转频率; （B）确定在（A）第一假脱机频率发生的第二线轴处的旋转速度的变化; （C）确定与第二卷轴处的旋转速度的（B）变化相对应的第一卷轴处的旋转位置; （D）计算出倾向于抵消第二线轴处的（B）转速变化的第一线轴的驱动马达轮廓; 和（E）在（C）确定的第一卷轴的旋转位置处将（D）驱动马达轮廓叠加在第一卷轴驱动马达上。

9. 发明授权

US06798608B2 Active detection and acquisition of a servo track subject to lateral motion 失效
标题翻译：主动检测和采集横向运动的伺服轨迹
公开(公告)号：US06798608B2
公开(公告)日：2004-09-28
申请号：US10050522
申请日：2002-01-18
申请人： Alex Chliwnyj , David Michael Davis , David Lee Swanson
发明人： Alex Chliwnyj , David Michael Davis , David Lee Swanson
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： Initially, from an off-track position at a known side of, and displaced from, a servo track pattern of a tape subject to lateral movement, servo loop logic slews a tape head servo sensor laterally toward the pattern at a rate greater than the maximum rate of lateral movement of the tape. Upon detecting sensed servo signals, the logic decelerates the slewing rate. Upon detecting that the sensed servo signals are within a lock window tolerance, the logic locks a servo loop to a position error signal representing the current lateral position of the servo sensor, thereby acquiring the servo pattern.
摘要翻译：最初，从侧向运动的带的伺服轨道图案的已知侧的偏离轨迹位置，伺服环路逻辑以大于最大值的速率将磁带头伺服传感器横向地朝向图案旋转胶带的横向运动速率。在检测到感测到的伺服信号时，逻辑使转盘速度减速。在检测到感测到的伺服信号在锁定窗口公差内时，逻辑将伺服环路锁定到表示伺服传感器的当前横向位置的位置误差信号，由此获取伺服模式。

10. 发明授权

US06798607B2 Defined signal injection to calibrate servo index positions employing an independent position sensor 失效
标题翻译：使用独立的位置传感器来定义信号注入以校准伺服指数位置
公开(公告)号：US06798607B2
公开(公告)日：2004-09-28
申请号：US10035182
申请日：2002-01-04
申请人： Alex Chliwnyj , Edward George Butt , David Lee Swanson
发明人： Alex Chliwnyj , Edward George Butt , David Lee Swanson
IPC分类号： G11B5584
CPC分类号： G11B5/5926 , G11B5/584
摘要： Calibration of magnetic tape servo index positions, which are laterally offset from edges and measured by ratios of dissimilar servo signals. A defined signal is injected into the track following servo to modulate the lateral position of the servo sensor, which is detected by an independent position sensor. Logic converts the detected lateral positions and servo signals to frequency components; selects injected signal frequency components; converts the selected frequency components to lateral positions and servo signals, and fits a curve to the converted lateral positions with respect to the converted servo signals to calibrate the index positions.
摘要翻译：磁带伺服指标位置的校准，它们由边缘横向偏移，并通过不同伺服信号的比率来测量。将定义的信号注入跟踪伺服后的轨道，以调制由独立位置传感器检测的伺服传感器的横向位置。逻辑将检测到的横向位置和伺服信号转换为频率分量; 选择注入信号频率分量; 将所选择的频率分量转换为横向位置和伺服信号，并且相对于转换的伺服信号将曲线拟合到转换的横向位置，以校准索引位置。

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