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。

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。

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.

公开(公告)号：US20120314322A1

公开(公告)日：2012-12-13

申请号：US13159297

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/584 ,  G11B5/78

CPC分类号： G11B5/584 ,  G11B5/00821

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US20120314320A1

公开(公告)日：2012-12-13

申请号：US13159287

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/78 ,  G11B21/10

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US08797674B2

公开(公告)日：2014-08-05

申请号：US13159277

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/584

CPC分类号： G11B5/78 ,  G11B5/00813 ,  G11B5/584

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US20120314319A1

公开(公告)日：2012-12-13

申请号：US13159277

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B17/34 ,  G11B5/78

CPC分类号： G11B5/78 ,  G11B5/00813 ,  G11B5/584

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US08817415B2

公开(公告)日：2014-08-26

申请号：US13159287

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US20120314318A1

公开(公告)日：2012-12-13

申请号：US13159257

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/78 ,  G11B17/34

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/70 ,  G11B5/78

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁取向的剩磁磁化，例如基本垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。

公开(公告)号：US08804276B2

公开(公告)日：2014-08-12

申请号：US13159257

申请日：2011-06-13

申请人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

发明人： Larold L. Olson ,  Douglas W. Johnson ,  Michael P. Sharrock

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/70 ,  G11B5/78

摘要： Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.

摘要翻译： 描述了用于擦除和写入具有大于50％的垂直矩形度和小于50％的纵向矩形度的磁存储带的磁存储带和技术。 通常，磁带可以以任何方向上的剩余磁化或磁方向偏置。 一个或两个头系统可以使用各种磁场图案来产生期望的剩磁。 伺服标记可以具有与伺服轨道上的剩余偏置相反的磁方向的剩磁磁化，例如基本上垂直于磁带。 在一些示例中，写头可以交替磁场的方向以连续地将伺服图案偏置和写入磁带。 此外，可以在磁带中产生对称的伺服标记，其中写头的间隙宽度大约等于伺服标记的长度。