发明名称 |
Record carrier with watermark |
摘要 |
A record carrier includes a pattern of substantially parallel tracks for storing data in the form of marks, in which the data is encoded by a channel code. A watermark is provided by controlling the parameter of the channel code so as to introduce a predetermined run length distribution in the marks on the record carrier. Brightness differences are caused by introducing this run length distribution.
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申请公布号 |
US7801327(B2) |
申请公布日期 |
2010.09.21 |
申请号 |
US20070838997 |
申请日期 |
2007.08.15 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
YNTEMA GERTJAN;WERNER ANTONIUS JACOBUS JOHANNES;KRAMER ENGELBERTUS PETRUS GERARDUS MARIA |
分类号 |
G06K9/00;H04N5/91;G06K9/36;G11B3/70;G11B20/00;G11B20/10;G11B20/12;G11B20/14;H04N5/92 |
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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