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    • 1. 发明申请
    • COPY PROTECTION FOR TRANSMISSION OF INFORMATION
    • 传输信息的复制保护
    • WO2004075185A1
    • 2004-09-02
    • PCT/GB2004/000643
    • 2004-02-19
    • MACROVISION EUROPE LIMITEDHEYLEN, Richard, A., A.JACKSON, Mark, DominicNEWMAN, Peter, Alfred
    • HEYLEN, Richard, A., A.JACKSON, Mark, DominicNEWMAN, Peter, Alfred
    • G11B20/00
    • G11B20/00579G11B20/00086G11B20/00927G11B2020/1457
    • It is proposed to copy protect data files for transmission by incorporating DSV data patterns, that is, data patterns which are difficult to encode without causing DSV problems, in the data files. The data in five audio streams and two video streams is placed, by way of encoders (10) and a multiplexer (12) into a stream of blocks of encoded data in the MPEG file format (14). In this format, blocks of video data V are arranged alternately with blocks of audio data A and padding stream blocks P. DSV data patterns (16) are incorporated into the MPEG file (14) by way of an encoder (18) to produce the copy protected data file (15). The DSV data patterns (16) are incorporated into locations within the MPEG file which have no data content such as padding stream blocks P and/or into unused audio data blocks A. The DSV data patterns incorporated within the data blocks fed either to a monitor or to a reproduction system will not interfere with the reproduction such that unfettered access is provided to the transmitted information. However, a CD or DVD writer will generally be caused to write a disc which, when read, will result in a reader returning corrupted data or information signalling a read error. Thus, the data in the MPEG file (14) has been copy protected.
    • 提出通过在数据文件中并入DSV数据模式,即难以编码而不引起DSV问题的数据模式来复制保护数据文件以进行传输。 将五个音频流和两个视频流中的数据通过编码器(10)和多路复用器(12)放入MPEG文件格式(14)中的编码数据块的流中。 在该格式中,视频数据块V与音频数据A和填充流块P的块交替布置.DSV数据模式(16)通过编码器(18)被并入到MPEG文件(14)中,以产生 复制受保护的数据文件(15)。 DSV数据模式(16)被并入MPEG文件内的没有诸如填充流块P和/或未使用的音频数据块A之类的数据内容的位置。并入数据块内的DSV数据模式被馈送到监视器 或再现系统不会干扰再现,从而向发送的信息提供不受约束的访问。 然而,一般来说,CD或DVD刻录机将写入一个光盘,当读取时,读取器将导致读取器返回损坏的数据或信息发送读取错误。 因此,MPEG文件(14)中的数据已被复制保护。