Signal transmision method
    6.
    发明授权
    Signal transmision method 有权
    信号传输方法

    公开(公告)号:US06546490B2

    公开(公告)日:2003-04-08

    申请号:US09396398

    申请日:1999-09-15

    IPC分类号: G06F1130

    摘要: A signal transmission method applicable to prevention of modification or alteration of the playback mode information, such as copying management information or charging information. The playback mode information form a terminal 15P is data-converted for ciphering by a playback mode information appendage circuit 14 in a header appendage circuit 13 responsive to the key information from a terminal 15K and the resulting information comprised of the data and the playback mode information is outputted. The reproducing side effects data conversion on the ciphered playback mode information for deciphering, by a playback mode information detection circuit 26 in a header separation circuit 25, using the key information from a terminal 27K, for taking out the original playback mode information at a terminal 27P.

    摘要翻译: 一种适用于防止重放模式信息的修改或改变的信号传输方法,例如复制管理信息或计费信息。 形成终端15P的重放模式信息被数据转换,用于响应于来自终端15K的密钥信息的头标附加电路13中的重放模式信息附加电路14进行加密,并且由数据和回放模式信息组成的结果信息 被输出。 再现侧在加密的重放模式信息上进行数据转换,用于通过标题分离电路25中的重放模式信息检测电路26使用来自终端27K的密钥信息进行解密,用于在终端处取出原始重放模式信息 27P。