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    DATA PROCESSOR AND DATA RECORDED MEDIUM
    1.
    发明公开
    DATA PROCESSOR AND DATA RECORDED MEDIUM 有权
    数据处理器和数据存储设备

    公开(公告)号：EP1047067A4

    公开(公告)日：2002-01-09

    申请号：EP99970204

    申请日：1999-10-08

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： YAMAMOTO MASAYA ,  NONOMURA TOMOYUKI ,  MINAMI MASATAKA ,  KOZUKA MASAYUKI

    IPC分类号： G11B20/00 ,  G11B20/12 ,  G11B20/10 ,  G09C5/00 ,  H04N1/32 ,  H04N1/387

    CPC分类号： G11B20/00884 ,  G11B20/00086 ,  G11B20/1217

    摘要： A data processor, comprises an acquiring unit (111) for receiving a network signal Sn from a network (N) and acquiring delivered audio data Dau in which information such as copyright information is embedded, and a control unit (115) for acquiring information representing the electronic watermark method used when the information such as copyright information is embedded. The embedded information is extracted by using an appropriate electronic watermark method according to the acquired electronic watermark information, and thereby the delivered audio data Dau in which the embedded information is embedded by using a predetermined electronic watermark method is recorded on a recording medium. As a result, delivered audio data Dau which is supplied through a network (N) and in which information is embedded even by using any electronic watermark method can be properly reproduced according to the embedded information such as copyright information by a reproducing device, which is a household appliance.

    DATA RECORDING/REPRODUCING DEVICE
    4.
    发明公开
    DATA RECORDING/REPRODUCING DEVICE 有权
    数据记录与再现单元

    公开(公告)号：EP1047066A4

    公开(公告)日：2000-12-20

    申请号：EP99970203

    申请日：1999-10-08

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： NONOMURA TOMOYUKI ,  INOUE MITSUHIRO ,  MINAMI MASATAKA ,  KOZUKA MASAYUKI

    IPC分类号： G11B20/00 ,  G11B20/10 ,  G06F12/14 ,  G10L11/00 ,  H03M7/00

    CPC分类号： G11B20/00884 ,  G11B20/00007 ,  G11B20/00086 ,  G11B20/10527

    摘要： A data recording/reproducing device has a stream attribute judging means (101) for judging whether or not an audio data stream supplied from outside is compressed one, as shown in the figure. A compression identification flag Fco having a value corresponding to the judgment result is added to the audio data stream, and the resultant stream is recorded in a stream recording section (100b). Therefore, after a compressed audio data stream supplied from outside is read out of the stream recording section, an electronic watermark can be inserted in the data stream. Hence, the time taken to write a compressed audio data stream in the stream recording section is short, and degradation of the quality of sound of the analog audio data generated by reproducing the data stream is prevented.