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：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。

公开(公告)号：US06321963B1

公开(公告)日：2001-11-27

申请号：US09017325

申请日：1998-02-02

申请人： Dale T. Gracyalny ,  David Carpenter ,  Kamala Grasso ,  Douglas W. Johnson ,  Peter D. Johnson ,  John E. Longan ,  John R. Moody ,  Hugh L. Smith ,  Ronald J. Vish

发明人： Dale T. Gracyalny ,  David Carpenter ,  Kamala Grasso ,  Douglas W. Johnson ,  Peter D. Johnson ,  John E. Longan ,  John R. Moody ,  Hugh L. Smith ,  Ronald J. Vish

IPC分类号： B26F302

CPC分类号： A47K10/3656 ,  A47K10/3643 ,  Y10T83/04 ,  Y10T83/896 ,  Y10T225/12 ,  Y10T225/18 ,  Y10T225/207 ,  Y10T225/211 ,  Y10T225/232 ,  Y10T225/238 ,  Y10T225/246 ,  Y10T225/252 ,  Y10T225/254 ,  Y10T225/27 ,  Y10T225/29 ,  Y10T225/321 ,  Y10T225/393

摘要： A dispensing apparatus and method are disclosed for dispensing sheet material from at least one roll of the sheet material. Dispensing is transferred from a stub roll to a reserve roll automatically in response to sensing a predetermined quantity of the stub roll. An isolating element is provided to lift the reserve roll out of contact with dispensing rollers during dispensing of sheet material from the stub roll, and a nipping element is provided to nip sheet material of the reserve roll when dispensing is transferred from the stub roll to the reserve roll. A cam controls movement of both the isolating element and the nipping element. Structure is also provided for sensing the diameter of the reserve roll of sheet material and providing an indication when the reserve roll is a predetermined diameter. The dispenser is quiet and capacity efficient.

摘要翻译： 公开了用于从片材的至少一卷分配片材的分配装置和方法。 响应于感测到预定量的短线辊，分配被自动地从短棒转移到储备辊。 提供隔离元件以在从短棒分配片材时提升储备辊与分配辊不接触，并且提供夹持元件以在将分配从短棒转移到 预备卷。 凸轮控制隔离元件和夹紧元件的移动。 还提供了用于感测片材的预制卷的直径并且当保留卷是预定直径时提供指示的结构。 分配器安静，容量高效。

公开(公告)号：US5552946A

公开(公告)日：1996-09-03

申请号：US316696

申请日：1994-09-30

申请人： Bryan W. Bicknese ,  Jeffrey F. Boigenzahn ,  Randy J. Bornhorst ,  Jerome T. Coffey ,  Todd P. Fracek ,  Douglas W. Johnson ,  Richard E. Lagergren ,  James M. Rigotti ,  Marvin A. Schlimmer

发明人： Bryan W. Bicknese ,  Jeffrey F. Boigenzahn ,  Randy J. Bornhorst ,  Jerome T. Coffey ,  Todd P. Fracek ,  Douglas W. Johnson ,  Richard E. Lagergren ,  James M. Rigotti ,  Marvin A. Schlimmer

IPC分类号： G11B33/08 ,  G11B33/12

CPC分类号： G11B33/124 ,  G11B33/08

摘要： A resilient and compliant shock rail is provided on the sides of the bottom cover for a PCMCIA standard Direct Access Storage Device. The shock rails, being of a resilient and easily deformable material, lengthen the impact time and attenuates the shock forces exerted on the DASD, thereby bringing the deceleration forces to acceptable levels. The shock rail may be further provided with low friction surfaces by bonding thin metal plates to the top and bottom surfaces of the shock rails to ease insertion and withdrawal of the PCMCIA DASD. The shock rail is provided with reinforcing members to insure that the keying scheme required for proper insertion is effective.

摘要翻译： 用于PCMCIA标准直接存取存储设备的底盖侧面设有弹性和兼容的冲击导轨。 由弹性容易变形的材料制成的冲击轨延长了冲击时间并减弱了施加在DASD上的冲击力，从而使减速力达到可接受的水平。 冲击轨道还可以通过将薄金属板粘结到冲击轨道的顶面和底面而进一步设置低摩擦表面，以便PCMCIA DASD的插入和取出。 冲击导轨配有加固件，以确保正确插入所需的键控方案是有效的。

公开(公告)号：US5297755A

公开(公告)日：1994-03-29

申请号：US902243

申请日：1992-06-22

申请人： Steven L. Felde ,  Paul Y. Hu ,  Guy F. Hudson ,  Douglas W. Johnson ,  Kenneth J. Lusk ,  Guillermo S. Robles ,  Robert R. Sidebotham

发明人： Steven L. Felde ,  Paul Y. Hu ,  Guy F. Hudson ,  Douglas W. Johnson ,  Kenneth J. Lusk ,  Guillermo S. Robles ,  Robert R. Sidebotham

IPC分类号： G11B15/60 ,  G11B15/64 ,  G11B23/087 ,  G11B23/113 ,  B65H20/14

CPC分类号： G11B23/087 ,  G11B23/08757

摘要： A tape cartridge having a high performance tape path therein. The tape cartridge includes one or more gas bearing tape guides and/or one or more recesses in an edge of a gas/tape bearing surface. The gas bearing assemblies include a plenum having a metal foil gas bearing surface bonded thereto using a die-cut adhesive sheet. The compliant members are each inserted into a recess adjacent the edge of the bearing surface to permit edge guiding while providing lateral support for the tape immediately before and after the recesses in the direction of tape movement.

摘要翻译： 其中具有高性能磁带路径的磁带盒。 带盒包括一个或多个气体支承带引导件和/或气体/带承载表面的边缘中的一个或多个凹部。 气体轴承组件包括具有金属箔气体轴承表面的压力室，该表面使用模切粘合片粘合到其上。 柔性构件各自插入邻近支承表面的凹部中的凹部，以允许边缘引导，同时在带移动的方向上在凹部之前和之后为带提供横向支撑。

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：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：US07495859B2

公开(公告)日：2009-02-24

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： G11B5/584

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。

公开(公告)号：US07204446B2

公开(公告)日：2007-04-17

申请号：US10914032

申请日：2004-08-05

申请人： Douglas W. Johnson ,  James S. Anderson ,  Richard W. Molstad ,  Robert W. Tapani

发明人： Douglas W. Johnson ,  James S. Anderson ,  Richard W. Molstad ,  Robert W. Tapani

IPC分类号： G03B23/02

CPC分类号： G11B15/605

摘要： The invention is directed to arrangements of tapered data storage tape guides which can improve the guiding of data storage tape. Tapered data storage tape guides having specific sizes relative to the data storage tape are also disclosed. The tapered data storage tape guides and arrangements of tapered guides can improve the ability to properly guide the data storage tape, e.g., during media fabrication, servo recording or readout, data recording or data readout. In one embodiment, a data storage tape guiding system may include a first tapered guide and a second tapered guide. The taper in the first guide can be opposite the taper in the second guide such that the data storage tape is forced against an upper flange of the first guide and forced against a lower flange of the second guide, or vice versa.

摘要翻译： 本发明涉及锥形数据存储带引导件的布置，其可以改进数据存储带的引导。 还公开了相对于数据存储带具有特定尺寸的锥形数据存储磁带引导件。 锥形数据存储带引导件和锥形引导件的布置可以提高例如在介质制造，伺服记录或读出，数据记录或数据读出期间适当引导数据存储带的能力。 在一个实施例中，数据存储带引导系统可以包括第一锥形引导件和第二锥形引导件。 第一引导件中的锥度可以与第二引导件中的锥度相反，使得数据存储带被迫抵抗第一引导件的上凸缘并且被迫抵靠第二引导件的下凸缘，反之亦然。