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    • 5. 发明申请
    • Dual mode servo pattern
    • 双模伺服模式
    • US20060126207A1
    • 2006-06-15
    • US10859376
    • 2004-06-02
    • Douglas JohnsonDenis LangloisRichard MolstadYung Yip
    • Douglas JohnsonDenis LangloisRichard MolstadYung Yip
    • G11B5/09G11B5/584
    • G11B5/584G11B5/59633
    • 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.
    • 描述了一种有助于高分辨率和宽动态范围的伺服模式,以精确地精确定位磁带上的伺服轨道中心线。 伺服模式提供整个伺服带上的绝对定位信息和相对于包括在伺服带中的每个伺服轨道的中心线的绝对定位信息。 因此,伺服模式包括在单个伺服频带中的隐式伺服磁道识别,消除了对常规磁道识别标记的需要。 换句话说,伺服模式本身可以区分单个伺服频带中的一个伺服磁道与另一个伺服磁道,并且相对于每个伺服磁道中心线提供高精度的定位信息。
    • 6. 发明申请
    • Magnetic head device and linear tape drive
    • 磁头设备和线性磁带机
    • US20050185344A1
    • 2005-08-25
    • US11041900
    • 2005-01-24
    • Yoshihiko ItoHirohisa KogaTakashi AbeJames AndersonDenis Langlois
    • Yoshihiko ItoHirohisa KogaTakashi AbeJames AndersonDenis Langlois
    • G11B5/584G11B5/008G11B5/29G11B5/56
    • G11B5/584G11B5/0083
    • In general, the invention provides a magnetic head device and linear tape drive that widen the high frequency side of the servo range. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic elements arranged for recording or playback of multiple tracks and a fine positioning structure that uses a bimodal construction that may widen the high frequency side of the servo range by increasing the resonant frequency of the magnetic head chip including the tracking structure and lowering the Q value of the resonance point. In addition, the invention includes a damping structure suitable for the fine positioning structure that improves high speed response by widening the range in which the magnetic head device can be used for a servo. The magnetic head device may use a linear tape drive method.
    • 通常,本发明提供一种加宽伺服范围的高频侧的磁头装置和线性磁带驱动器。 特别地,本发明提供一种磁头装置,其包括磁头芯片,该磁头芯片具有多个用于记录或重放多个磁道的磁性元件,以及精细的定位结构,其使用双峰结构,该结构可以通过增加伺服范围的高频侧 包括跟踪结构的磁头芯片的谐振频率,并降低谐振点的Q值。 此外,本发明还包括一种适于精细定位结构的阻尼结构,其通过扩大磁头装置可用于伺服的范围来改善高速响应。 磁头装置可以使用线性磁带驱动方法。
    • 8. 发明申请
    • Mixed frequency amplitude-based servo pattern
    • 混合频率幅度伺服模式
    • US20070002487A1
    • 2007-01-04
    • US11171958
    • 2005-06-29
    • Denis LangloisDouglas Johnson
    • Denis LangloisDouglas Johnson
    • G11B5/584
    • G11B5/584
    • The invention is directed to a servo frame that includes servo windows written with different frequencies to provide redundant positioning information. The servo frame includes a set of first servo windows recorded at a first frequency and a set of second servo windows recorded at a second frequency arranged in a checkerboard-like pattern. The different frequencies of the servo windows allow the servo frame to achieve improved positioning information redundancy. A servo track may include a plurality of the servo frames described herein to accurately position data read/write heads adjacent corresponding data tracks. The redundancy built into each of the servo frames substantially minimizes errors in the positioning information.
    • 本发明涉及一种包括以不同频率写入的伺服窗口以提供冗余定位信息的伺服帧。 伺服帧包括以第一频率记录的一组第一伺服窗口和以棋盘状图案布置的以第二频率记录的一组第二伺服窗口。 伺服窗口的不同频率允许伺服框架实现改进的定位信息冗余。 伺服轨道可以包括本文描述的多个伺服帧,以将数据读/写头精确地定位在相邻的数据轨道附近。 内置在每个伺服帧中的冗余基本上使定位信息中的错误最小化。
    • 9. 发明申请
    • Magnetic head device and linear tape drive
    • 磁头设备和线性磁带机
    • US20050201017A1
    • 2005-09-15
    • US11041511
    • 2005-01-24
    • Hirohisa KogaTakashi AbeYoshihiko ItoJames AndersonDenis Langlois
    • Hirohisa KogaTakashi AbeYoshihiko ItoJames AndersonDenis Langlois
    • G11B5/584G11B5/187G11B5/265G11B5/29G11B5/56
    • G11B5/584G11B5/00826G11B5/5504
    • In general, the invention provides a magnetic head device and linear tape drive that increase the resonant frequency and the range of a servo system. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic head elements that is a structural part of the fine positioning system which allows the magnetic head elements follow the data tracks on the linear magnetic tape. Consequently, weight is reduced thereby increasing the resonant frequency and servo bandwidth. In another embodiment, the invention provides a magnetic head comprising bimodal actuators that are formed into an S shape and displaced by applying voltage where the polarization direction is opposite from one end to the other. In particular, the head chip may remain stable and may be driven dynamically thereby allowing the mechanical resonance of the bimodal actuator (including the head chip) to increase to 1 kHz or higher.
    • 通常,本发明提供了增加伺服系统的谐振频率和范围的磁头装置和线性带驱动器。 特别地,本发明提供了一种磁头装置,其包括具有多个磁头元件的磁头芯片,磁头元件是精确定位系统的结构部分,其允许磁头元件跟随线性磁带上的数据轨道。 因此,减轻重量,从而增加谐振频率和伺服带宽。 在另一个实施例中,本发明提供了一种磁头,其包括形成S形的双模致动器,并通过施加偏振方向从一端到另一端的电压来移位。 特别地,头部芯片可以保持稳定并且可以动态地驱动,从而允许双模致动器(包括头部芯片)的机械共振增加到1kHz或更高。