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1. 发明授权

US07342748B2 System with matrix array of write heads and matrix array of magnetoresistive (MR) read heads 有权
标题翻译：具有写磁头矩阵阵列和磁阻（MR）读头的矩阵阵列的系统
公开(公告)号：US07342748B2
公开(公告)日：2008-03-11
申请号：US11013279
申请日：2004-12-14
申请人： Yung Yip , James S. Anderson , Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad
发明人： Yung Yip , James S. Anderson , Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad
IPC分类号： G11B5/48 , G11B21/16 , G11B5/56 , G11B21/24 , G11B5/33 , G11B5/127
CPC分类号： G11B5/00826 , G11B5/29 , G11B5/3958 , G11B5/4976 , G11B5/584
摘要： The invention provides a system comprising a non-linear array of magnetoresistive (MR) heads arranged in a two-dimensional matrix for reading information stored on magnetic media. The non-linear array of MR heads may comprise a planar array formed by a plurality of linear arrays of MR heads stacked to define a plurality of layers. Each of the linear arrays may share at least one shield element with another linear array of the non-linear array. In general, each layer is offset by one written track pitch and the number of layers of the invention is equal to the number of written track pitches in a channel pitch. The invention can also be used in a system for reading and writing information to magnetic media at improved track pitches relative to conventional read/write systems.
摘要翻译：本发明提供一种系统，其包括以二维矩阵排列的用于读取存储在磁性介质上的信息的磁阻（MR）磁头的非线性阵列。 MR头的非线性阵列可以包括由堆叠以限定多个层的MR头的多个线性阵列形成的平面阵列。每个线性阵列可以与非线性阵列的另一线性阵列共享至少一个屏蔽元件。通常，每个层被一个写入的轨道间距偏移，本发明的层数等于通道间距中写入的轨道间距的数量。本发明也可用于相对于常规读/写系统以改进的磁道间距读取和写入磁介质的系统。

2. 发明授权

US07095583B2 Dual mode servo pattern 失效
公开(公告)号：US07095583B2
公开(公告)日：2006-08-22
申请号：US10859376
申请日：2004-06-02
申请人： Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad , Yung Yip
发明人： Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad , Yung Yip
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/59633
摘要： A servo pattern is described that facilitates high resolution and wide dynamic range to accurately pinpoint servo track centerlines on a magnetic tape. The servo pattern provides both absolute positioning information over an entire servo band and absolute positioning information relative to the centerline of each servo track included in the servo band. Therefore, the servo pattern includes implicit servo track identification in a single servo band, eliminating the need for conventional track identification marks. In other words, the servo pattern, itself, can distinguish one servo track from another servo track in the single servo band as well as provide highly accurate positioning information relative to each of the servo track centerlines.

3. 发明授权

US07595950B2 Robust data storage techniques for two-sided data storage tape 有权
标题翻译：用于双面数据存储磁带的强大的数据存储技术
公开(公告)号：US07595950B2
公开(公告)日：2009-09-29
申请号：US11391574
申请日：2006-03-27
申请人： Larold L. Olson , Brian D. Findlay , C. Thomas Jennings , Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad
发明人： Larold L. Olson , Brian D. Findlay , C. Thomas Jennings , Douglas W. Johnson , Denis J. Langlois , Richard W. Molstad
IPC分类号： G11B5/09
CPC分类号： G11B5/00813 , G11B5/86 , G11B20/1201 , G11B20/1833 , G11B2220/232 , G11B2220/90
摘要： In an embodiment, a data storage tape includes a first side including recorded data and a second side including recorded error correcting code data for the recorded data on the first side. In another embodiment, a data storage tape comprises a first side including recorded data and a second side including a copy of the recorded data. Embodiments of the invention may distribute related data across both sides of a data storage tape and as a result may reduce the probability that a location-dependent error in the data storage tape will result in irretrievable data loss. Embodiments of the invention may be particularly useful for systems that can simultaneously retrieve or record data on both sides of a dual-sided data storage tape.
摘要翻译：在一个实施例中，数据存储带包括包括记录数据的第一侧和包括第一侧上记录数据的记录纠错码数据的第二侧。在另一个实施例中，数据存储带包括包括记录数据的第一侧和包括记录数据的副本的第二侧。本发明的实施例可以在数据存储磁带的两侧分布相关数据，并且因此可能降低数据存储磁带中与位置相关的错误将导致不可恢复的数据丢失的可能性。本发明的实施例对于能够同时在双面数据存储带的两侧检索或记录数据的系统可能特别有用。

4. 发明授权

US06999269B2 Two-sided data storage tape with servo information on both sides of the tape 有权
标题翻译：双面数据存储带，带磁带两侧的伺服信息
公开(公告)号：US06999269B2
公开(公告)日：2006-02-14
申请号：US10664140
申请日：2003-09-17
申请人： Douglas W. Johnson , Richard W. Molstad , Yung Yip
发明人： Douglas W. Johnson , Richard W. Molstad , Yung Yip
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： In general, the invention relates to a data storage tape including servo information on both sides of the tape. Techniques for writing servo information to both sides of the data storage tape are also described. For example, a mechanical arrangement of two servo write heads positioned with respect to the data storage tape can enable two-sided servo recording. In addition, a single servo write head may be used to write servo information to both sides of the data storage tape with the aid of a flux conductor. In that case, the magnetic field of the servo write head passes through the data storage tape to record servo information on both sides of the tape.
摘要翻译：一般来说，本发明涉及一种包括磁带两侧的伺服信息的数据存储带。还描述了将伺服信息写入数据存储磁带的两侧的技术。例如，相对于数据存储带定位的两个伺服写入头的机械布置可以实现双面伺服记录。此外，单个伺服写入头可以用于借助于磁通导体将伺服信息写入数据存储磁带的两侧。在这种情况下，伺服写入磁头的磁场通过数据存储磁带，在磁带的两面记录伺服信息。

5. 发明授权

US07031097B1 Systems and methods for using noise measurement tracks with servopositioning signals 失效
标题翻译：使用具有伺服定位信号的噪声测量轨迹的系统和方法
公开(公告)号：US07031097B1
公开(公告)日：2006-04-18
申请号：US10775884
申请日：2004-02-10
申请人： Richard W. Molstad , Douglas W. Johnson , Yung Yip
发明人： Richard W. Molstad , Douglas W. Johnson , Yung Yip
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Servopositioning data is written onto a linear recording medium such that a position error signal (PES) is intentionally created. The signal substantially resembles a conventional time based servo pattern, but is insensitive to transverse position. In a preferred embodiment, the signal at a zero-azimuth, i.e., an angle sufficiently small in value such that there is no significant PES signal associated with the transverse motion.
摘要翻译：伺服定位数据被写入线性记录介质，从而有意创建位置误差信号（PES）。信号基本上类似于传统的基于时间的伺服模式，但对横向位置不敏感。在优选实施例中，在零方位角处的信号，即具有足够小的值的角度使得不存在与横向运动相关联的显着PES信号。

6. 发明申请

US20080198500A1 Interleaved servo pattern 有权
标题翻译：交错伺服模式
公开(公告)号：US20080198500A1
公开(公告)日：2008-08-21
申请号：US11708762
申请日：2007-02-20
申请人： Mark P. Weber , Richard E. Jewett , Douglas W. Johnson , Richard W. Molstad , Alan R. Olson
发明人： Mark P. Weber , Richard E. Jewett , Douglas W. Johnson , Richard W. Molstad , Alan R. Olson
IPC分类号： G11B5/596
CPC分类号： G11B5/584
摘要： In general, the invention is directed to servo techniques that utilize servo patterns to facilitate head positioning relative to the data tracks. For example, the servo techniques may include a first series of servo patterns configured to allow calculation of a position error signal that substantially mitigates error resulting from a variation in velocity of the data storage tape during detection of the at least one of the servo patterns in the first series. The servo techniques may also include a second series of servo patterns interleaved within the first series of servo patterns in order to encode data. The encoded data may include linear position information. Embodiments may allow a data storage tape meeting a currently accepted data storage tape specification, e.g., an LTO Ultrium specification, to record data in a higher density than currently implemented with the specification.
摘要翻译：通常，本发明涉及利用伺服模式以便于相对于数据轨道进行头部定位的伺服技术。例如，伺服技术可以包括第一系列伺服模式，所述第一系列伺服模式被配置为允许计算位置误差信号，所述位置误差信号基本上减轻在检测到所述伺服模式中的至少一个伺服模式期间数据存储带的速度变化导致的误差第一个系列。伺服技术还可以包括在第一系列伺服模式中交错的第二系列伺服模式，以便对数据进行编码。编码数据可以包括线性位置信息。实施例可以允许满足当前接受的数据存储磁带规范（例如LTO Ultrium规范）的数据存储磁带以比当前在说明书中实现的密度更高的密度记录数据。

7. 发明授权

US07173794B2 Accessing both sides of data storage tape 失效
标题翻译：访问数据存储磁带的两面
公开(公告)号：US07173794B2
公开(公告)日：2007-02-06
申请号：US10664235
申请日：2003-09-17
申请人： Richard W. Molstad , Douglas W. Johnson , Robert W. Tapani
发明人： Richard W. Molstad , Douglas W. Johnson , Robert W. Tapani
IPC分类号： G11B5/54 , G11B5/55 , G11B21/08 , G11B21/22
CPC分类号： G11B5/5513 , G11B5/00813 , G11B5/5504
摘要： The invention provides a tape drive comprising a head mounted on a turntable. The turntable rotates to allow the head to access first and second sides of a data storage tape. Techniques for accessing the first and second sides may include rotating the turntable to position the head in first and second positions. In addition, the techniques may further include raising and lowering the turntable relative to the data storage tape in order to facilitate access to both sides of the data storage tape without requiring the data storage tape to be unspooled and re-spooled.
摘要翻译：本发明提供了一种磁带驱动器，其包括安装在转台上的磁头。转盘旋转以允许头部访问数据存储带的第一和第二侧。用于接近第一和第二侧面的技术可以包括旋转转台以将头部定位在第一和第二位置。此外，这些技术可以进一步包括相对于数据存储磁带提升和降低转盘，以便于访问数据存储磁带的两侧，而不需要使数据存储磁带未被插入和重新卷绕。

8. 发明授权

US07079343B2 Time-based sectored servo data format 失效
标题翻译：基于时间的扇区伺服数据格式
公开(公告)号：US07079343B2
公开(公告)日：2006-07-18
申请号：US10894326
申请日：2004-07-19
申请人： Richard W. Molstad , Douglas W. Johnson , Durkee B. Richards
发明人： Richard W. Molstad , Douglas W. Johnson , Durkee B. Richards
IPC分类号： G11B5/09 , G11B5/584 , G11B5/55
CPC分类号： G11B5/584 , G11B5/09 , G11B5/59655
摘要： The invention combines the benefits of sectored servo data with the benefits of time-based servo data. Recording media such as magnetic tape, magnetic disks, optical tape and optical disks can store servo data in a time-based sectored servo format.
摘要翻译：本发明将分段伺服数据的优点与基于时间的伺服数据的优点相结合。诸如磁带，磁盘，光带和光盘之类的记录介质可以以基于时间的扇区伺服格式存储伺服数据。

9. 发明授权

US07889454B2 Distributed servo patterns for data storage media 失效
标题翻译：用于数据存储介质的分布式伺服模式
公开(公告)号：US07889454B2
公开(公告)日：2011-02-15
申请号：US12291703
申请日：2008-11-13
申请人： Douglas W. Johnson , James S. Anderson , David A. Gobran , Denis J. Langlois
发明人： Douglas W. Johnson , James S. Anderson , David A. Gobran , Denis J. Langlois
IPC分类号： G11B5/584 , G11B5/09
CPC分类号： G11B5/584
摘要： The invention is directed to a data storage medium that includes a plurality of servo bands distributed across the data storage medium and a plurality of data tracks positioned between each of the plurality of distributed servo bands. The data storage medium comprises a servo band pitch of less than 200 micrometers. The large number of servo bands distributed across the data storage medium with a relatively small servo band pitch reduces the influence of media dimensional instability. In this way, the invention may substantially increase data read head positioning accuracy, especially in the case of narrow track widths. A read head array arranged in a two-dimensional matrix that includes a first servo read head, a second servo read head, and a plurality of data read heads positioned between the first and second servo read heads may be applied to a data storage medium as described herein.
摘要翻译：本发明涉及一种数据存储介质，其包括分布在数据存储介质上的多个伺服带和位于多个分布式伺服带中的每一个之间的多个数据磁道。数据存储介质包括小于200微米的伺服带间距。分布在具有相对小的伺服频带节距的数据存储介质上的大量伺服频带减少了介质尺寸不稳定性的影响。以这种方式，本发明可以显着增加数据读取头定位精度，特别是在窄轨道宽度的情况下。布置在包括第一伺服读取头，第二伺服读取头和位于第一和第二伺服读取头之间的多个数据读取头的二维矩阵中的读取头阵列可以作为在此描述。

10. 发明申请

US20080024905A1 Concurrent servo and data track writing 有权
公开(公告)号：US20080024905A1
公开(公告)日：2008-01-31
申请号：US11497185
申请日：2006-07-31
申请人： Douglas W. Johnson , Denis J. Langlois
发明人： Douglas W. Johnson , Denis J. Langlois
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： The invention is directed to techniques for storing information on a linear data storage medium, such as magnetic tape. According to the invention, a write head array concurrently writes a plurality of data tracks and at least one servo track onto the magnetic tape. In this way, the servo track is integrated between the data tracks. The servo track may, for instance, be located in the middle of a data band, and may span a distance corresponding to two data tracks. By concurrently writing the servo track with the data tracks, track misregistration (TMR) can be reduced or eliminated during the write operation.

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