发明名称 |
WATERMARKING OF AUDIO AND AUDIO-VISUAL SIGNALS |
摘要 |
<p>Security (and trackability if security is breached) of limited issue audio and audio visual recordings, e.g. review copies, is enhanced by putting a different audio watermark on to each of the limited issue items, such as CDs or DVDs. The watermark is applied in a two stage process. Apparatus for effecting this automatically is disclosed.</p> |
申请公布号 |
WO2005043529(A1) |
申请公布日期 |
2005.05.12 |
申请号 |
WO2004GB04477 |
申请日期 |
2004.10.22 |
申请人 |
SONIC ARTS LIMITED;LANDENBERG, AVI |
发明人 |
LANDENBERG, AVI |
分类号 |
G10L19/018;G11B20/00;(IPC1-7):G11B20/00;G10L19/00 |
主分类号 |
G10L19/018 |
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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