DATA HIDING METHOD AND DATA EXTRACTING METHOD,申请号EP19970902686-传众专利搜索

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发明名称	DATA HIDING METHOD AND DATA EXTRACTING METHOD
摘要
申请公布号	EP0852441(A4)	申请公布日期	2003.01.15
申请号	EP19970902686	申请日期	1997.02.13
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	SHIMIZU, SHUICHI;MORIMOTO, NORISHIGE;KOBAYASHI, MEI
分类号	G06T1/00;G09C5/00;H04N1/32;H04N1/44;(IPC1-7):H04N1/387	主分类号	G06T1/00
代理机构		代理人
主权项
地址

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