Track mis-registration measurement for a disc drive
    1.
    发明授权
    Track mis-registration measurement for a disc drive 失效
    跟踪磁盘驱动器的错误注册测量

    公开(公告)号:US06771441B2

    公开(公告)日:2004-08-03

    申请号:US10029518

    申请日:2001-12-21

    IPC分类号: G11B2736

    CPC分类号: G11B5/59633 G11B27/36

    摘要: An apparatus and method of predicting functional capability of a data storage device having a plurality of information tracks, comprising performing a DC erase on three adjacent information tracks, writing a predetermined bit pattern on a middle track of the three adjacent information tracks, providing a first signal from the bit pattern to a variable gain amplifier to generate a first value of the variable gain amplifier, performing DC erases on the information tracks adjacent the middle track, reading the bit pattern from the middle track to provide a second signal to the variable gain amplifier to generate a second value of the variable gain amplifier, and operating on the first and second values of the variable gain amplifier to provide a track mis-registration value for use with a predetermined threshold value to determine the functional capability of the data storage device.

    摘要翻译: 一种预测具有多个信息轨道的数据存储装置的功能能力的装置和方法,包括在三个相邻信息轨道上执行DC擦除,在三个相邻信息轨道的中间轨道上写入预定位图案,提供第一 从位模式到可变增益放大器的信号,以产生可变增益放大器的第一值,在与中间轨道相邻的信息轨道上执行直流擦除,从中间轨道读取位模式以向可变增益提供第二信号 放大器以产生可变增益放大器的第二值,并且对可变增益放大器的第一和第二值进行操作以提供跟预定阈值一起使用的轨道误配值,以确定数据存储装置的功能能力 。