| 发明名称 |
Digital data watermarking |
| 摘要 |
<p>Digital watermarking of data, including image, video and audio data, is performed by repeatedly inserting the watermark into subregions or subimages of the data. Similarly, the watermark is repeatedly extracted from the subregions of the data. <IMAGE></p> |
| 申请公布号 |
EP0840513(A2) |
申请公布日期 |
1998.05.06 |
| 申请号 |
EP19970119231 |
申请日期 |
1997.11.04 |
| 申请人 |
NEC CORPORATION |
发明人 |
COX, INGEMAR J.;MILLER, MATTHEW L.;TANAKA, KAZUYOSHI;WAKASU, YUTAKA |
| 分类号 |
H04N7/08;G06T1/00;G09C5/00;H04N1/32;H04N1/387;H04N7/081;H04N21/2389;H04N21/8358;(IPC1-7):H04N7/24 |
主分类号 |
H04N7/08 |
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