发明名称 |
DATA RECORDING/REPRODUCING DEVICE |
摘要 |
<p>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 steram, 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.</p> |
申请公布号 |
EP1047066(A1) |
申请公布日期 |
2000.10.25 |
申请号 |
EP19990970203 |
申请日期 |
1999.10.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NONOMURA, TOMOYUKI;INOUE, MITSUHIRO;MINAMI, MASATAKA;KOZUKA, MASAYUKI |
分类号 |
G11B20/00;G11B20/10;(IPC1-7):G11B20/10;G06F12/14;H03M7/00;G10L11/00 |
主分类号 |
G11B20/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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