Apparatus and method for full period compensation in an optical disk reader
    11.
    发明授权
    Apparatus and method for full period compensation in an optical disk reader 失效
    光盘阅读器全周期补偿的装置和方法

    公开(公告)号:US06169717A

    公开(公告)日:2001-01-02

    申请号:US09119087

    申请日:1998-07-20

    IPC分类号: G11B700

    CPC分类号: G11B20/10009 G11B20/18

    摘要: An optical disk reading apparatus and method compensate for errors in the full period of an EFM signal. An RF amplifier converts an optical signal reflected from an optical disk into an analog electrical signal. A signal converter converts the analog signal into a digital signal which is modulated to provide an EFM signal. A full period compensating portion compensates for full period errors in the EFM signal and outputs the error compensated EFM signal. An error correcting portion corrects the errors of the compensated EFM signal using an error correction code. Image quality is improved by removing the full period errors.

    摘要翻译: 一种光盘读取装置和方法补偿EFM信号的整个周期中的错误。 RF放大器将从光盘反射的光信号转换为模拟电信号。 信号转换器将模拟信号转换成被调制以提供EFM信号的数字信号。 全周期补偿部分补偿EFM信号中的全周期误差,并输出误差补偿的EFM信号。 误差校正部分使用纠错码校正补偿的EFM信号的误差。 通过删除全部周期错误来改善图像质量。