公开(公告)号：US5486961A

公开(公告)日：1996-01-23

申请号：US298490

申请日：1994-08-30

申请人： Zine-Eddine Boutaghou ,  Randy J. Bornhorst ,  Douglas W. Johnson

发明人： Zine-Eddine Boutaghou ,  Randy J. Bornhorst ,  Douglas W. Johnson

IPC分类号： G11B17/025 ,  G11B25/04 ,  G11B17/02

CPC分类号： G11B17/025 ,  G11B25/043

摘要： A clamp for securing one or more data storage disks to a hub is formed as a slightly frusto-conical shaped annulus of resilient material with inwardly and upwardly extending lobes that are displaced radially outward during installation about a hub. Clamping force is derived from the compression of the lobes which are captured by the hub and the twisting of the annulus from the frusto-conical configuration to a substantially radial orientation. The clamp is formed of a material that is softer than the disk to cause the clamp to be compliant and conform to the disk irregularities and thereby avoid compromising disk flatness. The clamp component material composition is also modified to achieve a coefficient of linear expansion that is identical to the disk. The outer periphery of the clamp presents an interrupted flange that permits a tool to engage the clamp, perform the assembly about the hub and be disengaged using automated equipment.

公开(公告)号：US5222779A

公开(公告)日：1993-06-29

申请号：US887855

申请日：1992-05-26

申请人： Douglas W. Johnson

发明人： Douglas W. Johnson

IPC分类号： A47C1/14

CPC分类号： A47C17/66 ,  A47C1/143 ,  A47C17/82 ,  Y10S297/90

摘要： At times a person may wish to lie on a chaise lounge in a prone position. The chaise lounge has a head support section that includes a head rest. The head rest has a T-shaped or triangular opening for accommodating the person's face. The head support section also has an area of reduced width to accommodate the person's arms. The person can thus hold and read a book or magazine located below the chaise lounge.

摘要翻译： 有时一个人可能希望躺在躺卧的躺椅上。 躺椅具有头部支撑部分，包括头枕。 头枕有一个T形或三角形的开口，用于容纳人的脸。 头部支撑部分还具有宽度减小的区域以适应人的手臂。 因此，该人可以持有并阅读位于躺椅下方的书或杂志。

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。

公开(公告)号：US08767342B2

公开(公告)日：2014-07-01

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

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： 描述了磁存储带和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：US07436622B2

公开(公告)日：2008-10-14

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.

摘要翻译： 本发明涉及用于存储诸如磁带的线性数据存储介质上的信息的技术。 根据本发明，写头阵列同时将多个数据磁道和至少一个伺服磁道写入到磁带上。 以这种方式，伺服轨迹集成在数据轨道之间。 例如，伺服轨道可以位于数据带的中间，并且可以跨越对应于两个数据轨道的距离。 通过与数据磁道同时写入伺服磁道，可以在写入操作期间减少或消除磁迹重合失调（TMR）。

公开(公告)号：US07139151B2

公开(公告)日：2006-11-21

申请号：US10378333

申请日：2003-03-03

申请人： Douglas W. Johnson ,  Yung Yip

发明人： Douglas W. Johnson ,  Yung Yip

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： Time-based servopositioning systems, methods, formats, and data recording media used in association with the same, employing bands of signals that differ from each other in the polarity of the servo signal, or the orientation of the servo signal, or the pattern width of the servo signal.

摘要翻译： 与其相关联地使用的基于时间的伺服定位系统，方法，格式和数据记录介质，采用在伺服信号的极性或者伺服信号的方向彼此不同的信号频带或图形宽度 的伺服信号。

公开(公告)号：US07054097B1

公开(公告)日：2006-05-30

申请号：US11083771

申请日：2005-03-18

申请人： Yung Yip ,  Douglas W. Johnson

发明人： Yung Yip ,  Douglas W. Johnson

IPC分类号： G11B5/584 ,  G11B5/09 ,  G11B17/00

CPC分类号： G11B5/09 ,  G11B5/584 ,  G11B15/60

摘要： The invention provides a read-while-write recording system for a linear data storage medium, such as magnetic tape or other data storage medium in which data is stored on parallel data tracks that extend along a length of the medium. The invention makes use of separate sliders for the read and write elements, and separate actuators to control the positioning of the sliders. Each of the sliders may also include servo elements to read servo marks. In order to limit the effect of movement of the first slider on the positioning of the second slider, a tape guide is implemented between the different sliders.

摘要翻译： 本发明提供了一种用于线性数据存储介质的读写同时记录系统，例如磁带或其他数据存储介质，其中数据存储在沿着介质长度延伸的并行数据轨道上。 本发明利用用于读取和写入元件的单独的滑块，以及单独的致动器来控制滑块的定位。 每个滑块还可以包括用于读取伺服标记的伺服元件。 为了限制第一滑动件的移动对第二滑块的定位的影响，在不同的滑动件之间实现带引导件。

公开(公告)号：US06918553B2

公开(公告)日：2005-07-19

申请号：US10358732

申请日：2003-02-05

申请人： Christopher J. Zwettler ,  Douglas W. Johnson

发明人： Christopher J. Zwettler ,  Douglas W. Johnson

IPC分类号： G11B15/43 ,  B65H59/38

CPC分类号： G11B15/43

摘要： In general, the invention is directed to techniques for reducing deformation of tape in data tape cartridges during storage to promote dimensional stability and increased tape longevity. The techniques involve controlling the winding tension applied to a tape during a final winding pass prior to unloading a data tape cartridge containing the tape from a drive. Excessive winding tensions can produce strain and compression on a tape pack, causing the tape to deform over time. Applications of reduced winding tension during the final pass provide reduced tape pack tension during periods in which the data tape cartridge is not used.

摘要翻译： 通常，本发明涉及用于在存储期间减小数据带盒中的带的变形以促进尺寸稳定性和增加带长度的技术。 这些技术涉及在从驱动器卸载包含带的数据带盒之前，控制在最终卷绕期间施加到带的卷绕张力。 过大的卷绕张力会在胶带上产生应变和压缩，导致胶带随时间变形。 在最后通过期间减小卷绕张力的应用在不使用数据带盒的时段期间提供减小的卷带张力。

公开(公告)号：US06536624B2

公开(公告)日：2003-03-25

申请号：US10118425

申请日：2002-04-09

申请人： Douglas W. Johnson ,  Dale T. Gracyalny ,  Thomas N. Kershaw ,  John R. Moody

发明人： Douglas W. Johnson ,  Dale T. Gracyalny ,  Thomas N. Kershaw ,  John R. Moody

IPC分类号： A47K1024

CPC分类号： A47K10/16 ,  A47K10/38 ,  Y10T225/12 ,  Y10T225/16 ,  Y10T428/15 ,  Y10T428/24314

摘要： Dispensable sheet material includes opposite side edges spaced apart from one another to define the overall width of the sheet material. Zones of weakness are spaced along the sheet material. Adjacent zones of weakness are spaced apart by a distance of from about 50% to about 200% of the overall width of the sheet material to divide the sheet material into a plurality of sheet material segments. Each of the zones of weakness comprises a plurality of perforations and frangible sheet material portions. Each of the frangible sheet material portions has a width of from about 0.3 mm to about 1.8 mm. The total width of the frangible sheet portions in each zone of weakness is from about 10% to about 30% of the overall width of the sheet material. The sheet material has an elasticity in the dispensing direction of from about 4% to about 20%. The sheet material has a dry tensile strength in the dispensing direction of from about 4,000 grams per 3 inches of width to about 12,000 grams per 3 inches of width. The sheet material has a wet tensile strength in the weakest direction, typically, a direction orthogonal to the dispensing direction, of at least about 900 grams per 3 inches of width. In addition, the sheet material has a tensile ratio of less than about 2.0. A dispensing system includes a dispenser defining an interior for containing the sheet material and an outlet for allowing sheet material to be dispensed from the interior of the housing.

公开(公告)号：US06270030B1

公开(公告)日：2001-08-07

申请号：US09407817

申请日：1999-09-28

申请人： Michael W. Johnson ,  Douglas W. Johnson ,  Charles L. Dennis, II

发明人： Michael W. Johnson ,  Douglas W. Johnson ,  Charles L. Dennis, II

IPC分类号： G03B2302

CPC分类号： G11B23/047 ,  G11B23/08757 ,  G11B23/107

摘要： A tape cartridge and cartridge drive system for controlling the compatibility of first and second tape cartridges having the same form factor in first and second tape drives. The system permits backward compatibility of the first tape cartridge in the second tape drive, while prohibiting the second tape cartridge from being used in the first tape drive. The second tape cartridge includes a tab projecting distally from a recess. The tab is positioned to contact the door actuator surface on the first tape drive so as to prevent insertion of the second tape cartridge into the first tape drive. The tab defines a cross-sectional area perpendicular to the insertion direction smaller than a gap in the door actuator assembly of the second tape drive to permit the second tape cartridge to be inserted into the second tape drive, whereby the second tape cartridge is compatible only with the second tape drive.

摘要翻译： 一种用于在第一和第二磁带驱动器中控制具有相同形状因数的第一和第二磁带盒的兼容性的磁带盒和盒驱动系统。 该系统允许第二磁带驱动器中的第一磁带盒向后兼容，同时禁止第二磁带盒在第一磁带驱动器中使用。 第二带盒包括从凹部向远侧突出的突出部。 突片被定位成接触第一磁带驱动器上的门致动器表面，以防止第二带盒插入到第一磁带驱动器中。 突片限定垂直于插入方向的横截面积小于第二带驱动器的门致动器组件中的间隙，以允许第二带盒插入第二带驱动器，由此第二带盒仅兼容 与第二个磁带驱动器。