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    • 7. 发明申请
    • Methods and systems for automatically characterizing non-linearities of a read-back signal of a recording system
    • 用于自动表征记录系统的回读信号的非线性的方法和系统
    • US20070041115A1
    • 2007-02-22
    • US11495007
    • 2006-07-27
    • Yuan Lee
    • Yuan Lee
    • G11B27/36
    • G11B27/36G11B5/4555G11B20/1816G11B20/22
    • A method for automatically characterizing non-linearities of a perpendicular read-back signal of a recording system is disclosed. The method includes using dibit extraction to obtain a read-back signal having a main pulse and a plurality of echoes where the read-back signal exhibits a baseline shift. An area under the first echo is integrated to obtain a first area where the integrating subtracts any baseline shift area within the first echo and where the first echo is associated with a first non-linearity. The method integrates an area of the read-back signal under the main pulse to obtain a second area where the integrating subtracts any baseline shift area within the main pulse. A first parameter is computed that characterizes the first non-linearity based on the first area and the second area. The method may be applied to characterize several non-linearities.
    • 公开了一种用于自动表征记录系统的垂直回读信号的非线性的方法。 该方法包括使用双向提取来获得具有主脉冲和多个回波的回读信号,其中回读信号呈现基线偏移。 集成第一回波下的区域以获得第一区域,其中积分减去第一回波内的任何基线偏移区域,并且其中第一回波与第一非线性相关联。 该方法在主脉冲下积分回读信号的区域,以获得第二区域,其中积分减去主脉冲内的任何基线偏移区域。 计算基于第一区域和第二区域来表征第一非线性的第一参数。 该方法可以应用于表征几个非线性。