发明名称 |
Method and apparatus for embedding and reproducing watermark into and from contents data |
摘要 |
An apparatus for embedding a watermark into contents data includes a pattern generating device for generating bits representing a predetermined bit pattern corresponding to a watermark. A specified-bit detecting device operates for detecting bits in original picture data as specified bits into which a watermark can be embedded. A calculating device operates for calculating a desired bit pattern represented by the specified bits in response to the predetermined bit pattern and a specified bit pattern. The desired bit pattern can be converted into the specified bit pattern by given logical operation with the predetermined bit pattern. A mixing device operates for changing the specified bits to represent the desired bit pattern to convert the original picture data into watermark-embedded picture data.
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申请公布号 |
US7174030(B2) |
申请公布日期 |
2007.02.06 |
申请号 |
US20010029672 |
申请日期 |
2001.12.31 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
SUGAHARA TAKAYUKI;NISHITANI MASAYOSHI |
分类号 |
G06K9/00;G06T1/00;H04N1/32 |
主分类号 |
G06K9/00 |
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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