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发明名称
ELECTRONIC WATERMARK SYSTEM, ELECTRONIC WATERMARK INSERTING DEVICE AND ELECTRONIC IMAGE DEMODULATOR
摘要
申请公布号
JPH11317859(A)
申请公布日期
1999.11.16
申请号
JP19980123690
申请日期
1998.05.06
申请人
NEC CORP
发明人
WATANABE JUNYA
分类号
B41J29/00;G06T1/00;G09C5/00;H04N1/387;H04N1/40;(IPC1-7):H04N1/387
主分类号
B41J29/00
代理机构
代理人
主权项
地址
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