公开(公告)号：US20040257689A1

公开(公告)日：2004-12-23

申请号：US10464394

申请日：2003-06-17

申请人： Imation Corp.

发明人： Richard W. Molstad ,  Yung Yip

IPC分类号： G11B005/09 ,  G11B005/584

CPC分类号： G11B5/584

摘要： The invention is directed to a magnetic storage medium recorded with an amplitude-based servo pattern in which one or more first servo windows positioned above a centerline of a servo track have a different width than one or more second servo windows positioned below the centerline. The first servo windows may be larger or smaller than the second servo windows. In either case, by detecting the widths of the servo windows and detecting signal amplitude as a servo head passes relative to the servo track, servo tracking can be achieved without the use or need for additional synchronization marks in the servo pattern.

摘要翻译： 本发明涉及一种记录有基于幅度的伺服模式的磁存储介质，其中位于伺服磁道的中心线上方的一个或多个第一伺服窗口具有与位于中心线下方的一个或多个第二伺服窗口不同的宽度。 第一伺服窗口可以大于或小于第二伺服窗口。 在任一种情况下，通过在伺服头相对于伺服轨迹通过时检测伺服窗口的宽度和检测信号幅度，可以实现伺服跟踪，而不需要在伺服模式中使用或需要额外的同步标记。

公开(公告)号：US20040141250A1

公开(公告)日：2004-07-22

申请号：US10349307

申请日：2003-01-22

申请人： International Business Machines Corporation

发明人： David H. Harper ,  Mark A. Taylor

IPC分类号： G11B015/18 ,  G11B005/584

CPC分类号： G11B5/584 ,  G11B15/43 ,  G11B15/52

摘要： A system and method of controlling tape tension during operation of a tape drive by making use of pre-existing timing based servo patterns formatted on the media. Changes in servo pattern timing are read at regular intervals and used to calculate changes in tension, with the torque of the tape reel motors being adjusted accordingly.

摘要翻译： 通过利用在介质上格式化的预先存在的基于时序的伺服模式，在磁带驱动器的操作期间控制磁带张力的系统和方法。 以规律的间隔读取伺服模式定时的变化，并用于计算张力的变化，同时相应调整磁带机电机的转矩。

公开(公告)号：US20040120070A1

公开(公告)日：2004-06-24

申请号：US10611758

申请日：2003-07-01

发明人： Hiroko Ito

IPC分类号： G11B020/20 ,  G11B005/584

CPC分类号： G11B5/52 ,  G11B5/584

摘要： A multi-channel head position control apparatus and a method of controlling the position of the multi-channel head in which even if the width of a tape-like recording medium is changed, each of unit recording heads constituting a multi-channel head can be aligned with corresponding track centers. The multi-channel head having a plurality of unit recording heads arrayed in the longitudinal direction is disposed so that the alignment direction of the unit recording heads forms an azimuth angle relative to the running direction of the tape-like recording medium. The position of the multi-channel head is controlled by a supporting section in accordance with a control signal recorded on the tape-like recording medium and detected by a detecting section so that the alignment between each of the unit recording heads and corresponding track center is maintained.

摘要翻译： 多通道头位置控制装置和控制多通道头的位置的方法，其中即使带状记录介质的宽度改变，构成多通道头的单元记录头中的每一个可以是 与对应的轨道中心对齐。 具有沿纵向排列的多个单位记录头的多通道头被设置成使得单位记录头的排列方向相对于带状记录介质的行进方向形成方位角。 多通道头的位置由支撑部分根据记录在带状记录介质上的控制信号控制，并被检测部分检测，使得每个单位记录头与对应的轨道中心之间的对准为 保持。

公开(公告)号：US20040001274A1

公开(公告)日：2004-01-01

申请号：US10185125

申请日：2002-06-27

申请人： International Business Machines Corporation

发明人： Alex Chliwnyj ,  David L. Swanson ,  Steven C. Wills

IPC分类号： G11B005/584 ,  G11B005/55

CPC分类号： G11B5/584 ,  G11B5/5508

摘要： A method to calibrate a transducer, whereby the transducer provides a first signal, and whereby a reference provides a reference signal. The first signal is sampled at a sampling rate comprising a reference frequency, and a digital measured first signal waveform is formed. The reference signal is sampled at the sampling rate, and a digital measured reference signal waveform is formed. The real and imaginary components of the measured first signal waveform are determined at (P) harmonics of the reference frequency. A filtered first signal waveform is formed using those real and imaginary components. The real and imaginary components of the measured reference signal waveform are determined at (P) harmonics of the reference frequency. A filtered reference signal waveform is formed using those real and imaginary components. A transfer function is formed using the filtered first signal waveform and the filtered reference signal waveform. A calibration curve is formed using that transfer function.

摘要翻译： 一种校准换能器的方法，由此换能器提供第一信号，并且由此参考提供参考信号。 以包括参考频率的采样率对第一信号进行采样，形成数字测量的第一信号波形。 以采样率对参考信号进行采样，形成数字测量参考信号波形。 测量的第一信号波形的实部和虚部在参考频率的（P）谐波处确定。 使用这些实部和虚部来形成滤波后的第一信号波形。 在参考频率的（P）谐波处确定测量的参考信号波形的实部和虚部。 使用这些实部和虚部分量形成滤波的参考信号波形。 使用滤波的第一信号波形和滤波的参考信号波形形成传递函数。 使用该传递函数形成校准曲线。

公开(公告)号：US20030189783A1

公开(公告)日：2003-10-09

申请号：US10072290

申请日：2002-04-04

申请人： Benchmark Storage Innovations, Inc.

发明人： James Zweighaft ,  Clark Milo Janssen ,  Timothy Joe Kindvall

IPC分类号： G11B005/584 ,  G11B005/55

CPC分类号： G11B5/584

摘要： A staggered calibration track comprising a plurality of calibration tracks for use positioning a tape drive tape head for reading and writing data to and from multiple data tracks. The staggered calibration track is written by positioning the write head to a predetermined location and moving the tape media horizontally as the vertical position of the tape head is incremented in a stepwise alignment. Locating one of the plurality of calibration tracks is accomplished by positioning the read head at the predetermined location corresponding to the edge of the particular calibration track and moving the tape media horizontally as the read head output is recorded. The particular calibration tracks vertical position is derived using the average read head output.

摘要翻译： 交错校准轨道，包括多个校准轨道，用于定位用于从多个数据轨道读取数据和从多个数据轨道读取数据的磁带驱动器磁带头。 通过将写入头定位到预定位置并且当磁头的垂直位置以逐步对准增加时水平移动磁带介质来写入交错的校准轨迹。 通过将读取头定位在与特定校准轨迹的边缘相对应的预定位置处并且当记录读取头输出时水平移动磁带介质来实现多个校准轨迹中的一个。 使用平均读取头输出导出特定的校准轨迹垂直位置。

公开(公告)号：US20030107836A1

公开(公告)日：2003-06-12

申请号：US10011928

申请日：2001-12-07

申请人： Benchmark Storage Innovations, Inc.

发明人： James Zweighaft ,  Philip John Turner

IPC分类号： G11B005/584 ,  G11B015/04

CPC分类号： G11B5/584 ,  G11B15/602 ,  G11B15/67 ,  G11B23/107

摘要： A lateral tape sensor for a tape drive having a tape head that is not capable of moving vertically as quickly as tape media, wherein the sensor senses lateral movement of tape media as it moves along a tape path between a storage reel and a take-up reel. The lateral tape motion sensor comprising a means for sensing the position of at least one edge of the tape media and a means for comparing the at least one edge position to predetermined thresholds to determine if the tape media moved laterally. When the lateral movement exceeds predetermined thresholds, the tape drive processor and control circuits respond to prevent accidentally overwriting data previously written on an adjacent track during a write operation, to adjust the tape head to locate data being read following lateral tape motion that occurs during a read operation or to warn the user of poor tape media quality.

摘要翻译： 一种用于带驱动器的侧向传感器，其具有不能像带介质一样垂直移动的磁带头，其中当介质沿着存储卷轴和卷取机之间的磁带路径移动时，传感器感测磁带介质的横向移动 卷轴。 所述侧面带运动传感器包括用于感测所述带介质的至少一个边缘的位置的装置，以及用于将所述至少一个边缘位置与预定阈值进行比较的装置，以确定所述带介质是否横向移动。 当横向移动超过预定阈值时，磁带驱动器处理器和控制电路响应以防止在写入操作期间意外覆盖先前写在相邻轨道上的数据，以调整磁头以定位正在被读取的数据， 读取操作或警告用户磁带介质质量差。

公开(公告)号：US20020012192A1

公开(公告)日：2002-01-31

申请号：US09216267

申请日：1998-12-18

申请人： U.S. PHILLIPS CORPORATION

发明人： ANTONIUS E .T. KUIPER ,  HANS W. VAN KESTEREN

IPC分类号： G11B005/584

CPC分类号： G11B5/584

摘要： The invention relates to a magnetic tape (10) formatted by means of a magnetic emboss head (60), and an apparatus comprising a magnetic data head (20) which is movable in a transverse direction (y) by means of an actuator (40). By means of the magnetic emboss head (60) the magnetic tape (10) has been provided with a pattern of servotracks ST1-ST17 which extend in a longitudinal direction (x). The odd-numbered servotracks contain a first servosignal and the even-numbered servotracks contain a second servosignal which is in phase opposition to the first servosignal. The servotracks ST2-ST8 and ST10-ST16 have a typical width W1 and form a group of two bands of seven servotracks which are separated by a band having a typical width Dnull(knullnull)W1, where knull0, 1, 2 etc. The pattern of servotracks is suited to position a magnetic data head (20) of a first generation at four different positions and suited to position a magnetic data head (120) of a second generation at eight different positions by controlling the actuator in response to the servosignal (V1-V4) read by the data channels.

摘要翻译： 本发明涉及一种通过磁性压花头（60）格式化的磁带（10），以及包括磁数据磁头（20）的装置，该数据磁头可通过致动器（40）沿横向（y）移动 ）。 通过磁性压花头（60），磁带（10）已经设置有沿纵向方向（x）延伸的伺服轨道ST1-ST17的图案。 奇数伺服机包含第一伺服信号，偶数伺服机构包含与第一伺服信号相反的第二伺服信号。 伺服电机ST2-ST8和ST10-ST16具有典型的宽度W1并形成由具有典型宽度D =（k +½）W1的频带分开的七个伺服磁带的一组两个频带，其中k = 0,1， 伺服轨迹的图案适于将第一代的磁数据头（20）定位在四个不同的位置，并且适于通过控制致动器在八个不同的位置来定位第二代的磁数据头（120） 响应由数据通道读取的伺服信号（V1-V4）。

公开(公告)号：US20040218304A1

公开(公告)日：2004-11-04

申请号：US10739402

申请日：2003-12-19

发明人： Turguy Goker ,  Sanwu Tan

IPC分类号： G11B005/584 ,  G11B005/09

CPC分类号： G11B5/584

摘要： An arrangement and method for compensating for the written-in tracking error for a linear tape drive filters out spatial error components of a position error signal (PES). The position information contained within A, B pairs of servo stripes, and within C, D pairs of stripes is preserved. The timing between the A and C bursts and the C and A bursts is filtered, such as by low pass filtering, to filter out the error that can be written-in by a servo writer. The timing signal for the A, B bursts and C, D bursts are divided by the filtered timing signals for the AC and CA timing signals, respectively. This ratio provides the filtered PES signal used by a head positioner to precisely position the head with respect to the tape.

摘要翻译： 用于补偿线性带驱动器的写入跟踪误差的布置和方法滤除位置误差信号（PES）的空间误差分量。 包含在A，B对伺服条纹以及C，D对条纹内的位置信息被保留。 A和C脉冲之间的定时以及C和A脉冲串被滤波，例如通过低通滤波，以滤除由伺服写入器写入的误差。 A，B脉冲串和C，D脉冲串的定时信号分别被分别用于AC和CA定时信号的滤波定时信号。 该比率提供头部定位器使用的经滤波的PES信号，以相对于带精确定位头部。

公开(公告)号：US20040184181A1

公开(公告)日：2004-09-23

申请号：US10757278

申请日：2004-01-14

发明人： Shinichi Fukuda ,  Tadashi Ozue

IPC分类号： G11B005/584

CPC分类号： G11B5/584

摘要： First, data is read from tracks formed on a tape-shaped recording medium by heads disposed on a rotary drum, to measure error rates. Next, of the tracks formed on the tape-shaped recording medium, a worst track suffering the highest error rate is detected based on the error rates thus measured. Then, a pair of reproducing heads that can reproduce the worst track thus detected at the lowest error rates is detected from the measured error rates. Thereafter, tracking servo control is performed such that the worst track can be scanned by the pair of reproducing heads. As a result, a reproducing apparatus capable of proper reproduction even when recorded tracks undergo variations in width and reproducing heads are erroneously mounted.

摘要翻译： 首先，通过设置在旋转鼓上的磁头从形成在带状记录介质上的磁道读取数据，以测量错误率。 接下来，形成在带状记录介质上的轨道中，基于这样测量的错误率来检测遭受最高错误率的最差轨道。 然后，从测量的错误率中检测出可以再现以最低错误率检测到的最差磁道的一对重放磁头。 此后，执行跟踪伺服控制，使得可以通过一对再现头扫描最差的轨迹。 结果，即使当记录的轨道经历宽度变化和再现头时也能适当再现的再现装置被错误地安装。

公开(公告)号：US20040047067A1

公开(公告)日：2004-03-11

申请号：US10241196

申请日：2002-09-11

申请人： Imation Corp.

发明人： Yung Yip

IPC分类号： G11B005/584

CPC分类号： G11B5/584

摘要： A system and method to minimize the contribution of head channel spacing to the negative effects of transverse changes in dimensions of recording media having prerecorded servopositioning tracks. Multiple channels on the recording head are separated into multiple groups of head channels, and each group of heads is independently positioned relative to the pre-written servo tracks. The head comprises an actuator for each pair of head groups. The actuator adjusts the relative spacing between members of the pair in response to position error signals indicating misalignment between the heads and the pre-written servopositioning tracks on the medium.