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    • 6. 发明申请
    • TRI-STATE SERVOWRITER DRIVER WITH SLOW RETURN TO ZERO
    • TRI-STATE SERVOWRITER驱动程序缓慢返回到零
    • US20070268616A1
    • 2007-11-22
    • US11830869
    • 2007-07-31
    • James EatonGlynda Eaton
    • James EatonGlynda Eaton
    • G11B21/02
    • G11B5/584
    • A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having positive and negative current outputs, respectively, for performing a write sequence and a rest state, having no current output for avoiding overwriting of the magnetic pattern between write sequences. The driver is further adapted to gradually change the magnetic head state from a rest state to a write state before beginning a write sequence and to gradually change the magnetic head state back to a rest state upon completing a write sequence. Thus, strong uniform signal pulses are produced upon playback of the magnetic pattern.
    • 一种用于在磁存储介质上写入基于时序的磁性伺服带图案的方法和装置。 该装置包括磁头和三态驱动器。 驱动器适于控制三个磁头状态,包括分别具有正和负电流输出的两个写入状态,用于执行写入序列和休止状态,其中没有电流输出用于避免在写入序列之间重写磁性模式。 驱动器还适于在开始写入序列之前逐渐将磁头状态从静止状态改变到写入状态,并且在完成写入序列时逐渐地将磁头状态改变回休止状态。 因此,在重放磁图案时产生强均匀的信号脉冲。