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    • 7. 发明授权
    • Method and apparatus for providing equalization for the reading of marks
on optical data storage media
    • 用于提供光学数据存储介质上的标记读取的均衡的方法和装置
    • US5818806A
    • 1998-10-06
    • US852242
    • 1997-05-06
    • Terrence L. WongSteven R. Spielman
    • Terrence L. WongSteven R. Spielman
    • G11B7/005G11B20/10G11B27/10G11B27/36G11B7/00
    • G11B7/0052G11B20/10009G11B27/10G11B27/36
    • A system and method are disclosed for compensating for intersymbol interference on an optical disc. The method includes measuring an intersymbol linear transfer function. The intersymbol linear transfer function substantially describes a linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc. The intersymbol linear transfer function is convolved with a write signal to produce a linearly transformed portion of the optically detected read signal. An inverse linear transfer function of the intersymbol linear transfer function is determined. The inverse linear transfer function has the property of canceling the effect of convolving the intersymbol linear transfer function with the write signal. The optically detected read signal is convolved with the inverse linear transfer function. Thus, the linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc is canceled by the convolution of the optically detected read signal with the inverse linear transfer function.
    • 公开了用于补偿光盘上的符号间干扰的系统和方法。 该方法包括测量符号间线性传递函数。 符号间线性传递函数基本上描述了符号间干扰对来自光盘的光学检测的读取信号的影响的线性部分。 符号间线性传递函数与写入信号进行卷积,以产生光学检测的读取信号的线性变换部分。 确定符号间线性传递函数的反向线性传递函数。 逆线性传递函数具有消除带符号线性传递函数与写入信号的卷积效应的性质。 光学检测的读取信号与逆向线性传递函数进行卷积。 因此,通过光学检测的读取信号与逆向线性传递函数的卷积来消除符号间干扰对来自光盘的光学检测的读取信号的影响的线性部分。