Inventor
OKAYASU SATOE
JP3 patents
Patents
3 patentsUS6968455B2Nov 22, 2005
Method of referring to digital watermark information embedded in a mark image
HITACHI LTD28 citations88
US7269852B2Sep 11, 2007
Authenticity output method and its apparatus, and processing program
HITACHI LTD22 citations86
US7010569B2Mar 7, 2006
Method of information display and communication system using the method
HITACHI LTD19 citations77