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    Azimuthal transition layout for two-sided data storage tape
    2.
    发明授权
    Azimuthal transition layout for two-sided data storage tape 有权
    双面数据存储磁带的方位转换布局

    公开(公告)号：US06940672B2

    公开(公告)日：2005-09-06

    申请号：US10744998

    申请日：2003-12-23

    申请人： Daniel P. Stubbs ,  Yung Yip

    发明人： Daniel P. Stubbs ,  Yung Yip

    IPC分类号： G11B5/008 ,  G11B5/584 ,  G11B5/718 ,  G11B5/02

    CPC分类号： G11B5/00813 ,  G11B5/584 ,  G11B5/718

    摘要： In general, the invention provides two-sided magnetic data storage tape comprising azimuthal magnetic transition layouts that can substantially reduce demagnetization of recorded magnetic transitions on the surfaces of the tape. The invention specifically balances the goal of simplified media manufacture with the goal of reducing or avoiding media degradation when the tape is spooled. The two-sided magnetic data storage tape defines a substantially similar easy axis of magnetic anisotropy on a first and a second side of the tape, which can simplify media manufacture. Recorded magnetic transitions on the opposing sides of the tape define azimuths that are substantially different, which can help avoid media degradation when the tape is spooled.

    摘要翻译： 通常，本发明提供了包括方位磁性过渡布局的双面磁数据存储带，其可以显着地减少磁带表面上记录的磁转变的退磁。 本发明特别地平衡了简化介质制造的目的，目的在减少或避免磁带卷绕时的介质劣化。 双面磁数据存储带限定了磁带的第一和第二侧上的磁各向异性的基本相似的容易轴，这可以简化介质制造。 在磁带的相对侧上记录的磁转变定义了基本不同的方位角，这有助于避免磁带卷绕时介质的劣化。

    Recordable optical data storage disc
    3.
    发明申请
    Recordable optical data storage disc 审中-公开
    可记录光学数据存储盘

    公开(公告)号：US20080229349A1

    公开(公告)日：2008-09-18

    申请号：US11725131

    申请日：2007-03-15

    申请人： Richard R. Ollmann ,  Stanley C. Busman ,  Roger C. Culhane ,  Mark R. Drutowski ,  Terry L. Morkved ,  Daniel P. Stubbs

    发明人： Richard R. Ollmann ,  Stanley C. Busman ,  Roger C. Culhane ,  Mark R. Drutowski ,  Terry L. Morkved ,  Daniel P. Stubbs

    IPC分类号： G11B7/24

    CPC分类号： G11B7/266 ,  G11B7/24079

    摘要： A recordable data storage disc comprises a substrate having a spirally or concentrically shaped groove pattern. A groove depth of the groove pattern is greater than 90 nanometers, and a track pitch provided by the groove pattern is less than 500 nanometers. The data storage disc further comprises a write-once recording layer formed on the groove pattern, and a reflector layer formed on the recording layer opposite the substrate. The groove depth of greater than 90 nanometers allows a thicker coating of dye to be used for the recording layer compared to other recordable data storage discs with a groove pattern with a groove depth of 90 nanometers or less. The thicker coating of dye allows a lower write power, better modulation when reading a data signal from the disc. The groove depth of greater than 90 nanometers may also allow for more precise push-pull tracking.

    摘要翻译： 可记录数据存储盘包括具有螺旋或同心形状的凹槽图案的基板。 凹槽图案的凹槽深度大于90纳米，并且由凹槽图案提供的轨道间距小于500纳米。 数据存储盘还包括形成在凹槽图案上的一次写入记录层和形成在与衬底相对的记录层上的反射层。 与具有槽深度为90纳米或更小的凹槽图案的其他可记录数据存储盘相比，槽深度大于90纳米允许用于记录层的较厚涂层涂层。 较厚的染料涂层允许较低的写入功率，当从盘读取数据信号时更好的调制。 凹槽深度大于90纳米也可以允许更精确的推挽跟踪。

    Computing environment having secure storage device
    6.
    发明授权
    Computing environment having secure storage device 有权
    具有安全存储设备的计算环境

    公开(公告)号：US06968459B1

    公开(公告)日：2005-11-22

    申请号：US09464347

    申请日：1999-12-15

    申请人： Jeffrey A. Morgan ,  C. Thomas Jennings ,  Larold L. Olson ,  Luiz S. Pires ,  Daniel P. Stubbs

    发明人： Jeffrey A. Morgan ,  C. Thomas Jennings ,  Larold L. Olson ,  Luiz S. Pires ,  Daniel P. Stubbs

    IPC分类号： G06F12/14 ,  G06F12/16 ,  G06F21/00 ,  H04L9/00 ,  H04L9/08

    CPC分类号： G06F12/1408 ,  G06F21/31 ,  G06F21/32 ,  G06F21/34 ,  G06F21/50 ,  G06F2221/2105 ,  G06F2221/2113 ,  G06F2221/2149 ,  G06F2221/2153 ,  H04L9/0866

    摘要： A secure computing environment in which a computer automatically operates in a full-access data storage mode when it detects the presence of a secure removable storage device. In full-access mode all data written to removable storage device is encrypted with a cryptographic key and the user is given access to sensitive if authorized. Otherwise, the computer operates in a restricted-access mode in which the user is unable to write to the removable storage device and is unable to access sensitive data. The invention detects security information on the data storage device and generates a cryptographic key from the security information. The security information can be a function of the unique format characteristics of the underlying storage medium, a unique identifier retrieved from an electronic circuit embedded within the removable storage device or a serial number etched on the storage device during manufacturing. In addition, drive-specific information and even user-specific information can also be used to generate the cryptographic key, thereby creating a highly secure computing environment. When the computer operates in a full-access mode, all data written to the storage device is encrypted and the user is able access to sensitive data within the organization. When security information is not present on the removable storage device the computer automatically operates in a restricted-access mode in which the user does not have access to sensitive data and data cannot be written to the removable storage device.

    摘要翻译： 一种安全计算环境，其中当计算机检测到存在安全的可移动存储设备时，计算机以全访问数据存储模式自动操作。 在完全访问模式下，写入可移动存储设备的所有数据都使用加密密钥进行加密，如果授权用户可以访问敏感的访问权限。 否则，计算机以限制访问模式操作，其中用户不能写入可移动存储设备并且不能访问敏感数据。 本发明检测数据存储装置的安全信息，并根据安全信息生成密码密钥。 安全信息可以是底层存储介质的唯一格式特征的函数，从嵌入在可移除存储设备内的电子电路检索的唯一标识符或在制造期间蚀刻在存储设备上的序列号。 此外，还可以使用驱动器特定信息甚至用户特定的信息来生成加密密钥，从而创建高度安全的计算环境。 当计算机以完全访问模式运行时，写入存储设备的所有数据都被加密，用户可以访问组织内的敏感数据。 当可移动存储设备上不存在安全信息时，计算机在限制访问模式下自动操作，其中用户不能访问敏感数据，并且数据不能写入可移动存储设备。

    Multibeam laser servowriting of magnetic data storage media
    7.
    发明授权
    Multibeam laser servowriting of magnetic data storage media 失效
    多光束激光伺服磁数据存储介质

    公开(公告)号：US06365061B1

    公开(公告)日：2002-04-02

    申请号：US09251774

    申请日：1999-02-17

    申请人： Lewis S. Damer ,  Stephen W. Farnsworth ,  Robert S. Jackson ,  Mark P. Lubratt ,  Robert C. Martin ,  David M. Perry ,  John J. Simbal ,  Daniel P. Stubbs

    发明人： Lewis S. Damer ,  Stephen W. Farnsworth ,  Robert S. Jackson ,  Mark P. Lubratt ,  Robert C. Martin ,  David M. Perry ,  John J. Simbal ,  Daniel P. Stubbs

    IPC分类号： B44C122

    CPC分类号： G11B5/59633

    摘要： Methods and systems for laser etching of optical servo patterns on magnetic data storage media using two or more beams of laser energy produced from a single source of laser energy to produce a servo pattern on the magnetic data storage media. By using two or more etching beams, the time required to produce a servo pattern on the magnetic data storage media can be significantly reduced. Alternatively, each servo track in the servo pattern can be written more than once. The servo patterns thus formed can be read optically or they may be read magnetically using magnetic overwriting (if the servo pattern is formed in a magnetic coating on the media). In either case, the servo patterns are either permanently formed in the media when read optically, or they can be recreated after bulk erasing if they are provided using magnetic overwriting. In yet another alternative, the servo patterns may be read both magnetically and optically, with the magnetic and optical reading occurring simultaneously or sequentially.

    摘要翻译： 用于使用由单个激光能量源产生的两个或更多个激光能量的激光蚀刻磁性数据存储介质上的光学伺服图案的方法和系统，以在磁性数据存储介质上产生伺服图案。 通过使用两个或更多个蚀刻光束，可以显着地减少在磁数据存储介质上产生伺服图案所需的时间。 或者，伺服模式中的每个伺服轨迹可以被写入不止一次。 这样形成的伺服模式可以被光学读取，或者可以使用磁覆写（如果伺服图案形成在介质上的磁性涂层中）磁读取。 在任一种情况下，当光学读取时，伺服模式永久地形成在介质中，或者如果使用磁性覆盖提供它们，则可以在批量擦除之后重新创建伺服图案。 在另一替代方案中，伺服图案可以以磁性和光学方式读取，磁和光读取同时或顺序地发生。

    Magnetic recording medium having a carbon rich coating
    8.
    发明授权
    Magnetic recording medium having a carbon rich coating 失效
    具有富碳涂层的磁记录介质

    公开(公告)号：US5232791A

    公开(公告)日：1993-08-03

    申请号：US811986

    申请日：1991-12-23

    申请人： Gunter A. Kohler ,  Richard W. Duerst ,  Daniel P. Stubbs

    发明人： Gunter A. Kohler ,  Richard W. Duerst ,  Daniel P. Stubbs

    IPC分类号： C23C16/26 ,  C23C16/513 ,  G11B5/72 ,  G11B5/725 ,  G11B5/84

    CPC分类号： G11B5/72 ,  C23C16/26 ,  C23C16/513 ,  G11B5/725 ,  G11B5/8408 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265

    摘要： The present invention provides a magnetic recording medium that includes a polymeric flexible substrate and a magnetic layer coating thereon, with a binderless carbon rich layer adhered to the magnetic layer.The present invention also provides a process for the plasma deposition of the carbon rich coating onto a magnetic medium comprising the steps of:a. providing a magnetic medium in a vacuum chamber;b. generating carbon rich plasma in the vacuum chamber by injecting a plasma gas suitable to provide a carbon rich coating into an elongated hollow cathode; and providing a sufficient voltage to create and maintain plasma; and maintaining a vacuum in the vacuum chamber sufficient for the plasma; andc. exposing the magnetic medium to the plasma while the magnetic medium is influenced by a radio frequency bias electrode to accelerate the plasma towards the magnetic medium and deposit the carbon rich coating on the magnetic medium.

    摘要翻译： 本发明提供一种磁记录介质，其包括聚合物柔性基底和其上的磁性层涂层，其中无粘结剂碳富集层粘附到磁性层。 本发明还提供了一种用于将富碳涂层等离子体沉积到磁性介质上的方法，包括以下步骤：a。 在真空室中提供磁介质; b。 通过将适合于将富碳涂层提供到细长空心阴极中的等离子体气体在真空室中产生富碳等离子体; 并提供足够的电压来产生和维持等离子体; 并且在真空室中保持足够的等离子体的真空; 和c。 将磁介质暴露于等离子体，同时磁介质受到射频偏置电极的影响，以将等离子体加速到磁介质，并将富碳涂层沉积在磁介质上。

    Time-based optical servo system and method
    9.
    发明授权
    Time-based optical servo system and method 失效
    基于时间的光伺服系统及方法

    公开(公告)号：US06574066B1

    公开(公告)日：2003-06-03

    申请号：US09506470

    申请日：2000-02-17

    申请人： Daniel P. Stubbs ,  Robert S. Jackson

    发明人： Daniel P. Stubbs ,  Robert S. Jackson

    IPC分类号： G11B1304

    CPC分类号： G11B5/59655

    摘要： A time-based optical servo system includes at least one optical indicator mark located on at least one servo track of a data storage medium. Alternatively, a pattern of optical indicators is repeatedly recorded in the at least one servo track. A servo read head assembly coupled to a transducing head assembly includes two elongate and non-parallel detection devices having a known relative geometry. The detection devices are adapted to detect the optical indicator marks and determine the time period required for each optical indicator mark to pass between the detection devices. This time period is used to calculate the location of the transducing head assembly relative to the storage medium in a translating direction and produce a position error signal (PES) based thereon.

    摘要翻译： 基于时间的光学伺服系统包括位于数据存储介质的至少一个伺服轨道上的至少一个光学指示标记。 或者，光学指示器的图案被重复记录在至少一个伺服轨道中。 耦合到换能头组件的伺服读头组件包括具有已知相对几何形状的两个细长和非平行检测装置。 检测装置适于检测光学指示标记并确定每个光学指示标记在检测装置之间通过所需的时间段。 该时间段用于在平移方向上计算换能头组件相对于存储介质的位置，并基于此产生位置误差信号（PES）。

    Optical servo system for use with magnetic data storage tape having magnetic reference indicators
    10.
    发明授权
    Optical servo system for use with magnetic data storage tape having magnetic reference indicators 失效
    用于具有磁参考指示器的磁数据存储带的光伺服系统

    公开(公告)号：US06493174B1

    公开(公告)日：2002-12-10

    申请号：US09506174

    申请日：2000-02-17

    申请人： Daniel P. Stubbs

    发明人： Daniel P. Stubbs

    IPC分类号： G11B5584

    CPC分类号： G11B5/584

    摘要： Optical servo systems and magnetic data storage tape for use with magnetic data storage drives. The servo system utilizes a head mechanism that includes an optical head and a magnetic head. The optical head is adapted to detect a series of optical indicator marks located on a servo track on the tape. The magnetic head is adapted to detect one or a series of magnetic reference indicator marks located on a corresponding data track. The magnetic reference indicator marks are, in one embodiment, spaced periodically along the length of the tape. The magnetic reference indicator marks allow recalibration of the optical servo system by permitting the determination of any dimensional offset between the optical head and the magnetic head attributable to manufacturing tolerances or environmental factors. In one embodiment, a separate temperature sensor may be used to determine thermal changes in and around the head mechanism. Based on the temperature change measured, a special calibration algorithm may be invoked to recalibrate the distance between the optical head and the magnetic head.

    摘要翻译： 用于磁数据存储驱动器的光学伺服系统和磁性数据存储磁带。 伺服系统利用包括光头和磁头的头机构。 光头适于检测位于磁带上的伺服磁道上的一系列光学指示标记。 磁头适于检测位于相应的数据轨道上的一个或一系列磁性参考指示标记。 在一个实施例中，磁参考指示标记沿带的长度周期性地间隔开。 磁参考指示标记允许通过允许根据制造公差或环境因素来确定光学头和磁头之间的任何尺寸偏移来重新校准光学伺服系统。 在一个实施例中，可以使用单独的温度传感器来确定头部机构内部和周围的热变化。 基于测量的温度变化，可以调用特殊的校准算法来重新校准光头和磁头之间的距离。