发明授权
- 专利标题： Digital watermarks and trading cards
- 专利标题（中）： 数字水印和交易卡
-
申请号： US09630243申请日： 2000-07-31
-
公开(公告)号： US06735324B1公开(公告)日： 2004-05-11
- 发明人: Tyler J. McKinley , Marc D. Miller , J. Scott Carr , William Y. Conwell
- 申请人： Tyler J. McKinley , Marc D. Miller , J. Scott Carr , William Y. Conwell
- 主分类号： H04K100
- IPC分类号： H04K100
摘要：
Digital watermarks can be employed in conjunction with trading cards (e.g., baseball cards, fantasy game cards, etc.) to serve a variety of purposes. Among these are facilitating on-line collecting and game-play. Digital watermarks may also be used in distinguishing genuine cards from counterfeits.
信息查询
