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    Method and apparatus for recording and reproducing information on and from recording disc
    1.
    发明授权
    Method and apparatus for recording and reproducing information on and from recording disc 失效
    用于在记录盘上记录和再现信息的方法和装置

    公开(公告)号：US06618335B2

    公开(公告)日：2003-09-09

    申请号：US08933825

    申请日：1997-09-19

    申请人： Yoshiaki Tanaka ,  Isao Oowaki

    发明人： Yoshiaki Tanaka ,  Isao Oowaki

    IPC分类号： G11B700

    CPC分类号： G11B20/00768 ,  G11B20/00086 ,  G11B20/00173 ,  G11B20/00181 ,  G11B20/00268 ,  G11B20/00297 ,  G11B20/00557 ,  G11B20/00753 ,  G11B20/00876 ,  G11B20/1217 ,  G11B2020/1278

    摘要： A recording disc has a lead-in area and a data area. A scrambled version of a SID code word is read out from the lead-in area of the disc. The SID code word represents a producer of the disc. The readout scrambled version is de-scrambled to recover the SID code word. The recovered SID code word is collated with reference SID code words to decide whether or not the disc is legitimate. Main information is read out from the data area of the disc when it is decided that the disc is legitimate. Readout of the main information from the data area of the disc is inhibited when it is decided that the disc is not legitimate.

    摘要翻译： 记录盘具有导入区和数据区。 从盘的导入区读出SID码字的加扰版本。 SID代码字表示光盘的制作者。 读出的加扰版本被解密以恢复SID码字。 将恢复的SID码字与参考SID码字进行比较，以确定光盘是否合法。 当确定光盘是合法的时，从光盘的数据区读出主要信息。 当确定光盘不合法时，从盘的数据区读出主要信息被禁止。

    Method and apparatus for recording and reproducing information on and from recording disc
    2.
    发明授权
    Method and apparatus for recording and reproducing information on and from recording disc 有权
    用于在记录盘上记录和再现信息的方法和装置

    公开(公告)号：US07408859B2

    公开(公告)日：2008-08-05

    申请号：US10637596

    申请日：2003-08-11

    申请人： Yoshiaki Tanaka ,  Isao Oowaki

    发明人： Yoshiaki Tanaka ,  Isao Oowaki

    IPC分类号： G11B7/00 ,  H04N7/167

    CPC分类号： G11B20/00768 ,  G11B20/00086 ,  G11B20/00173 ,  G11B20/00181 ,  G11B20/00268 ,  G11B20/00297 ,  G11B20/00557 ,  G11B20/00753 ,  G11B20/00876 ,  G11B20/1217 ,  G11B2020/1278

    摘要： A recording disc has a lead-in area and a data area. A scrambled version of a SID code word is read out from the lead-in area of the disc. The SID code word represents a producer of the disc. The readout scrambled version is de-scrambled to recover the SID code word. The recovered SID code word is collated with reference SID code words to decide whether or not the disc is legitimate. Main information is read out from the data area of the disc when it is decided that the disc is legitimate. Readout of the main information from the data area of the disc is inhibited when it is decided that the disc is not legitimate.

    摘要翻译： 记录盘具有导入区和数据区。 从盘的导入区读出SID码字的加扰版本。 SID代码字表示光盘的制作者。 读出的加扰版本被解密以恢复SID码字。 将恢复的SID码字与参考SID码字进行比较，以确定光盘是否合法。 当确定光盘是合法的时，从光盘的数据区读出主要信息。 当确定光盘不合法时，从盘的数据区读出主要信息被禁止。