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1.发明授权公开(公告)号：US06735039B1
公开(公告)日：2004-05-11
申请号：US10112984
申请日：2002-03-29
申请人： Richard W. Molstad
发明人： Richard W. Molstad
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： Systems and methods for encoding linear position information in amplitude-based servopositioning systems, suitable for linear data recording on a medium such as magnetic tape, through use of amplitude or frequency modulation of the signal forming the servopositioning pattern on the medium.
摘要翻译： 用于在基于幅度的伺服定位系统中编码线性位置信息的系统和方法，适用于在诸如磁带的介质上的线性数据记录，通过使用在介质上形成伺服定位图案的信号的振幅或频率调制。
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公开(公告)号：US06697211B2
公开(公告)日：2004-02-24
申请号：US09814751
申请日：2001-03-23
申请人： Shinji Koganezawa
发明人： Shinji Koganezawa
IPC分类号： G11B5584
CPC分类号： G11B5/5552
摘要： A head drive device for positioning a read and/or write head for reading and/or writing information to and from a disk coated with a recording medium, the head drive device including a carriage, a main actuator for moving the carriage, a plurality of heads for reading and/or writing information to and from the disk, and a vibration control portion comprising a plurality of micro-actuators positioned between the carriage and the heads, such that when the main actuator and a first micro-actuator are driven to enable precise positioning of a desired head with respect to a surface of the disk a second micro-actuator is driven so as to offset vibrations generated at the carriage by the operation of the desired micro-actuator.
摘要翻译： 一种头驱动装置，用于定位用于向涂覆有记录介质的盘读取和/或写入信息的读/写头，头驱动装置包括滑架，用于移动滑架的主致动器，多个 用于读取和/或向盘读取信息的磁头以及包括定位在滑架和磁头之间的多个微致动器的振动控制部分，使得当主致动器和第一微致动器被驱动以使能 相对于盘的表面精确定位所需的头部，驱动第二微致动器以通过所需的微致动器的操作来抵消在滑架处产生的振动。
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3.发明授权公开(公告)号：US06462899B1
公开(公告)日：2002-10-08
申请号：US09477558
申请日：2000-01-04
申请人： Alex Chliwnyj , John James Gniewek
发明人： Alex Chliwnyj , John James Gniewek
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： A servo system and method for initializing and calibrating a track following servo for following an index servo position displaced laterally from an edge, the edge comprising the interface between two dissimilar servo signals. A servo head is moveable laterally and a servo detector determines a ratio related to the two dissimilar recorded servo signals, the ratio representing the lateral position of the servo head with respect to the edge. An independent position sensor determines the mechanical lateral position of the servo head. The servo head is nominally aligned at a lateral position at which the servo detector provides a ratio representing the edge. The mechanical lateral position of the independent position sensor is measured at the nominal alignment of the servo head. Then, the servo head is repositioned laterally the predetermined displacement distance from the nominal alignment as determined by the independent position sensor. The repositioned ratio of the servo signals is measured at the displaced distance, comprising index ratio for initializing and calibrating the track following servo.
摘要翻译： 一种伺服系统和方法，用于初始化和校准轨道跟随伺服，用于跟随从边缘侧向偏移的索引伺服位置，所述边缘包括两个不同的伺服信号之间的接口。 伺服头可横向移动，伺服检测器确定与两个不同的记录伺服信号相关的比例，该比率表示伺服头相对于边缘的横向位置。 独立的位置传感器确定伺服头的机械横向位置。 伺服头在伺服检测器提供表示边缘的比例的横向位置处名义上对齐。 独立位置传感器的机械横向位置在伺服头的标称对准处被测量。 然后，由独立位置传感器确定的伺服头在与标称对准的预定位移距离上横向重新定位。 在位移距离处测量伺服信号的重新定位比，包括用于初始化和校准轨道跟随伺服的折射率。
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公开(公告)号：US06445529B1
公开(公告)日：2002-09-03
申请号：US09174192
申请日：1998-10-16
申请人： Peter Mahr
发明人： Peter Mahr
IPC分类号： G11B5584
CPC分类号： G05B19/231 , G05B2219/41119 , G05B2219/41143 , G05B2219/41248
摘要： A device and a method are disclosed for obtaining a corrected servo control signal in a servo control loop take in account a dynamic behavior of the servo control signal to calculate a new threshold for this signal. If the servo control signal for any reason goes beyond the extremum then it is corrected by replacing it with the value of the threshold. Depending on the difference between the servo control signal and the threshold the new threshold may be greater or smaller than the previous threshold value. The threshold may be a maximum or a minimum thus limiting the servo control in its maximum or in its minimum value.
摘要翻译： 公开了一种用于在伺服控制环路中获得校正的伺服控制信号的装置和方法，其考虑了伺服控制信号的动态特性以计算该信号的新阈值。 如果由于任何原因伺服控制信号超出极值，则通过将其替换为阈值来校正。 根据伺服控制信号和阈值之间的差异，新的阈值可以大于或小于先前的阈值。 阈值可以是最大值或最小值，从而将伺服控制限制在其最大值或最小值。
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公开(公告)号：US06426846B1
公开(公告)日：2002-07-30
申请号：US09365898
申请日：1999-08-03
IPC分类号： G11B5584
摘要： Servo track positioning information is asynchronously digitally sampled from adjoining servo tracks having different servo patterns, and varies between a maximum envelope and a minimum envelope of positioning information. An envelope follower receives the digital samples, detecting and providing a maximum envelope output measuring the amplitude of a burst envelope of the maximum digital samples, and detecting and providing a minimum envelope output measuring the amplitude of a burst envelope of the minimum digital samples. A “DROPOUT” threshold detector detects the received digital samples failing to meet a “DROPOUT” threshold related to the maximum burst envelope. An “ACQUIRE” detector responds to the “DROPOUT” threshold detection, detecting the minimum envelope for the envelope detector, which provides the minimum envelope output. The “DROPOUT” detection distinguishes the minimum envelope from the maximum envelope and allows measurement of the minimum envelope. A ratio of the measured maximum envelope amplitude and measured minimum envelope amplitude represents the lateral position of the servo head.
摘要翻译： 伺服轨道定位信息从具有不同伺服模式的相邻伺服轨迹异步地采样，并且在定位信息的最大包络和最小包络之间变化。 信封跟随器接收数字样本，检测并提供测量最大数字样本的脉冲包络的幅度的最大包络输出，以及检测并提供测量最小数字样本的脉冲包络的幅度的最小包络输出。 “DROPOUT”阈值检测器检测接收到的数字样本未能满足与最大突发包络相关的“DROPOUT”阈值。 “ACQUIRE”检测器响应“DROPOUT”阈值检测，检测包络检测器的最小包络，提供最小包络输出。 “DROPOUT”检测将最小包络与最大包络进行区分，并允许测量最小包络。 测量的最大包络幅度和测量的最小包络幅度的比率表示伺服头的横向位置。
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公开(公告)号：US06246535B1
公开(公告)日：2001-06-12
申请号：US09191766
申请日：1998-11-13
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： An optical tracking system is presented which aligns a recording head with a magnetic tape. The system relies on an optically detectable servo track on the back of the tape. The servo track is formed by repeatedly engraving, at spaced intervals, three colinear marks perpendicular to the length of the tape. Laser light reflects off the marks, and passes through a ball lens that directs the reflected light on to separate light detectors, one for each mark. By recording characteristics of the reflected light, the detectors transmit information to the system that permits the recording head to be properly aligned with the tape.
摘要翻译： 提出了一种光学跟踪系统，其将记录头与磁带对准。 该系统依赖于磁带背面的可光学检测的伺服轨道。 通过以间隔的间隔重复地雕刻垂直于带的长度的三个共线标记来形成伺服轨道。 激光从标记反射，并通过球形透镜，将反射光引导到分离的光检测器，每个标记一个。 通过记录反射光的特性，检测器将信息传送到允许记录头与磁带正确对准的系统。
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公开(公告)号：US06181506B2
公开(公告)日：2001-01-30
申请号：US08504251
申请日：1995-07-19
IPC分类号： G11B5584
CPC分类号： G11B15/4676 , G11B5/588 , G11B21/085 , G11B21/106
摘要： A novel tracking control device and method is disclosed. In the tracking control device and method, digital information is reproduced from a recording medium by a reproducing head, an error contained in the reproduced digital information is detected, and the relative position between the recording medium and the reproducing head is controlled by using the detection result. In addition, an arrangement capable of realizing a high tracking capability with respect to the non-linearity of a track is also disclosed. The arrangement forms a plurality of tracking error signals indicative of positional deviations between the reproducing head and a plurality of divided areas into which each track formed on the recording medium is divided, and selectively uses the plurality of tracking error signals.
摘要翻译： 公开了一种新颖的跟踪控制装置和方法。 在跟踪控制装置和方法中，通过再现头从记录介质再现数字信息，检测再现的数字信息中包含的错误，并且通过使用检测来控制记录介质和再现头之间的相对位置 结果。 此外，还公开了能够实现关于轨道的非线性的高跟踪能力的装置。 该排列形成多个跟踪误差信号，该信号指示再现头与被分割在记录介质上的每个轨道划分成多个划分区域的位置偏差，并选择性地使用多个跟踪误差信号。
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8.发明授权公开(公告)号：US06813112B2
公开(公告)日：2004-11-02
申请号：US09947974
申请日：2001-09-06
申请人： Alex Chliwnyj , James Mitchell Karp
发明人： Alex Chliwnyj , James Mitchell Karp
IPC分类号： G11B5584
CPC分类号： G11B15/02 , G11B5/584 , G11B15/672 , G11B23/107
摘要： The invention provides a method, apparatus and software for detecting mechanical faults in tape drives. The invention is especially suited to detecting collisions against a read/write head in a tape drive that occurs during tape threading operation. According to embodiments of the invention the read/write head is located at a predetermined position with a predetermined effective holding force, and an independent position sensor that senses the position of the read/write head is used to detect collisions against the read/write head. According to embodiment of the invention the relative frequency with which mechanical faults are detected over the course of multiple tape threading operations is evaluated to determine if there is a mechanical fault in a particular tape drive.
摘要翻译： 本发明提供一种用于检测磁带驱动器中的机械故障的方法，装置和软件。 本发明特别适于检测在磁带穿线操作期间发生的磁带驱动器中的读/写磁头的碰撞。 根据本发明的实施例，读/写头位于具有预定有效保持力的预定位置，并且用于检测读/写头的位置的独立位置传感器用于检测与读/写头的碰撞 。 根据本发明的实施例，评估在多个带穿线操作过程中检测到机械故障的相对频率，以确定特定磁带驱动器中是否存在机械故障。
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公开(公告)号：US06775092B2
公开(公告)日：2004-08-10
申请号：US10011928
申请日：2001-12-07
IPC分类号： G11B5584
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。
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公开(公告)号：US06754033B1
公开(公告)日：2004-06-22
申请号：US09641134
申请日：2000-08-16
IPC分类号： G11B5584
CPC分类号： G11B15/602 , G11B15/605
摘要： A tape movement constraint is provided for a tape drive system which moves a tape longitudinally along a tape path across a tape head, the tape having longitudinal tracks. The tape head has a track following servo system for moving the head laterally for following lateral movement of the tracks, where the tape is subject to lateral transient movement. A tape roller bearing closely adjacent the tape head is rotatable about a central axis parallel to the cylindrical peripheral surface, allowing the tape freedom of movement in the longitudinal direction. The tape roller bearing has a frictional cylindrical peripheral surface for contacting and engaging the surface of the tape and constraining movement of the tape in the lateral direction, thereby reducing the rate of the lateral transient movement of the tape to allow the track following servo system to follow the reduced rate lateral transient movement of the longitudinal tracks. Any potential air bearing that could form between the surface of the tape and the surface of the roller bearing is collapsed to insure that the roller bearing frictionally contacts and engages the surface of the tape.
摘要翻译： 为磁带驱动系统提供磁带移动约束，磁带驱动系统使磁带沿磁带路径纵向移动穿过磁带头，磁带具有纵向磁道。 带头具有跟踪伺服系统的轨道，用于横向移动头部以便跟踪横向运动的轨道，其中带受到横向瞬时移动。 靠近磁带头的带辊轴承可绕平行于圆柱形周边表面的中心轴线旋转，允许磁带在纵向上的自由度。 带辊轴承具有用于接触和接合带的表面的摩擦圆柱形外周表面，并且在横向方向上限制带的移动，从而降低带的侧向瞬时运动的速率，以允许跟随伺服系统的跟踪 跟随纵向轨迹的横向瞬时运动减小。 可能形成在带的表面和滚子轴承表面之间的任何潜在的空气轴承被折叠以确保滚子轴承摩擦地接触和接合带的表面。
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