发明名称 |
DIGITAL DATA ENCODE SYSTEM |
摘要 |
A digital data encode system for inserting water mark data into digital data signals having a series of field data by use of a water mark data inserting device, said digital data encode system comprising a field judging unit dividing the digital data signals by a predetermined reference, a water mark data selection output unit for selecting proper one of a plurality of different water mark data prepared correspondingly to the division according to the judgement result of the field judging unit, and a water mark data inserting device for inserting the water mark data supplied from the water mark data selection output unit into the digital data signals.
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申请公布号 |
CA2230183(C) |
申请公布日期 |
2001.10.30 |
申请号 |
CA19982230183 |
申请日期 |
1998.02.23 |
申请人 |
NEC CORPORATION |
发明人 |
SATOH, SHINOBU;WAKASU, YUTAKA |
分类号 |
G11B23/00;G11B23/28;H04L9/32;H04N1/23;H04N5/76;H04N5/91;(IPC1-7):H04L9/32 |
主分类号 |
G11B23/00 |
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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