发明名称 |
Generating, detecting, recording, and reproducing a watermarked moving image |
摘要 |
<p>The present invention relates to a apparatus for inserting watermark information into a moving image. The watermark information indicative of the ownership of the copyright of the moving image is inserted by a watermark-information insertion unit (2) into the frames of the moving image at irregular intervals, the frames being selected by a frame-insertion unit (1) so that the watermark information is visually unperceivable in the moving image. In addition, the insertion positions of the watermark information in the frames may be determined on the basis of random number values. Besides, restrictive information for the copying of the moving image is inserted together with the watermark information. When the moving image has been brought to a standstill into a static image, the watermark information can be visually perceived with ease, so that illegality such as piracy can be readily exposed. Thus, the present invention can provide a simple and inexpensive scheme for the copyright protection of the moving image. <IMAGE></p> |
申请公布号 |
EP0899688(A2) |
申请公布日期 |
1999.03.03 |
申请号 |
EP19980302407 |
申请日期 |
1998.03.30 |
申请人 |
FUJITSU LIMITED |
发明人 |
ITOH, HIROYASU;AKIYAMA, RYOTA;NAKAGAWA, TORU |
分类号 |
G06F12/14;G06F21/24;G06T1/00;G11B20/00;H04N1/387;H04N5/85;H04N5/91;H04N5/913;H04N7/08;H04N7/081;H04N9/804;(IPC1-7):G06T11/00 |
主分类号 |
G06F12/14 |
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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