Dual density recording for direction-dependent linear media
    31.
    发明授权
    Dual density recording for direction-dependent linear media 失效
    用于方向依赖线性介质的双重密度记录

    公开(公告)号:US07046466B1

    公开(公告)日:2006-05-16

    申请号:US11015831

    申请日:2004-12-16

    CPC分类号: G11B5/00878 G11B5/584

    摘要: The invention provides a linear data storage medium, such as magnetic tape, in which data tracks that extend in one direction are recorded at a different density than data tracks recorded in the opposite direction. Various techniques are also described to facilitate such dual density recording. The invention is particularly advantageous for direction-dependent linear data storage media, by allowing similar error rates to be achieved in both directions on the media.

    摘要翻译: 本发明提供了一种诸如磁带的线性数据存储介质,其中以与沿相反方向记录的数据轨道不同的密度记录在一个方向上延伸的数据轨道。 还描述了各种技术以促进这种双重密度记录。 通过允许在介质上在两个方向上实现类似的错误率,本发明对于方向相关的线性数据存储介质特别有利。

    Time-based servo for magnetic storage media
    32.
    发明授权
    Time-based servo for magnetic storage media 有权
    用于磁存储介质的基于时间的伺服

    公开(公告)号:US06842305B2

    公开(公告)日:2005-01-11

    申请号:US10369908

    申请日:2003-02-17

    CPC分类号: G11B5/5926 G11B5/584

    摘要: A servo track configuration includes at least one servo track having a width. A servo pattern is repeatedly recorded in the at least one servo track. Repeatedly recording the servo pattern includes repeating the simultaneous recording of first and second reference pattern lines and a track pattern line in the at least one servo track. Each of the first and second reference pattern lines has an identical predetermined geometry and extends across the width of the at least one servo track. Further, the track pattern line has a predetermined geometry that is different than the predetermined geometry of the first and second reference pattern lines and extends across the width of the at least one servo track.

    摘要翻译: 伺服轨道配置包括具有宽度的至少一个伺服轨道。 伺服图案被重复记录在至少一个伺服轨道中。 重复地记录伺服模式包括在至少一个伺服轨道中重复同时记录第一和第二参考图案线和轨迹图案线。 第一和第二参考图案线中的每一个具有相同的预定几何形状并且延伸跨越至少一个伺服轨道的宽度。 此外,轨道图案线具有与第一和第二参考图案线的预定几何形状不同的预定几何形状,并且跨越至少一个伺服轨道的宽度延伸。

    Linear positioning encoding in amplitude-based servopositioning systems
    34.
    发明授权
    Linear positioning encoding in amplitude-based servopositioning systems 失效
    基于幅度的伺服定位系统中的线性定位编码

    公开(公告)号:US06735039B1

    公开(公告)日:2004-05-11

    申请号:US10112984

    申请日:2002-03-29

    IPC分类号: G11B5584

    CPC分类号: G11B5/584

    摘要: Systems and methods for encoding linear position information in amplitude-based servopositioning systems, suitable for linear data recording on a medium such as magnetic tape, through use of amplitude or frequency modulation of the signal forming the servopositioning pattern on the medium.

    摘要翻译: 用于在基于幅度的伺服定位系统中编码线性位置信息的系统和方法,适用于在诸如磁带的介质上的线性数据记录,通过使用在介质上形成伺服定位图案的信号的振幅或频率调制。