发明授权
US06990584B1 Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information
失效
用于限制数字信息复制的方法和装置，以及用于记录数字信息的装置
- 专利标题： Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information
- 专利标题（中）： 用于限制数字信息复制的方法和装置，以及用于记录数字信息的装置
-
申请号： US09453719申请日： 1999-12-03
-
公开(公告)号： US06990584B1公开(公告)日： 2006-01-24
- 发明人: Hiroshi Yoshiura , Hiroyuki Kimura , Akira Ogino , Yoshiaki Moriyama , Kazumi Sugaya
- 申请人： Hiroshi Yoshiura , Hiroyuki Kimura , Akira Ogino , Yoshiaki Moriyama , Kazumi Sugaya
- 申请人地址： JP Tokyo-To JP Tokyo-To JP Tokyo-To
- 专利权人： Pioneer Corporation,Hitachi, LTD,Sony Corporation
- 当前专利权人： Pioneer Corporation,Hitachi, LTD,Sony Corporation
- 当前专利权人地址： JP Tokyo-To JP Tokyo-To JP Tokyo-To
- 代理机构： Nixon & Vanderhye, PC
- 优先权： JP10-344075 19981203
- 主分类号： H04L9/00
- IPC分类号： H04L9/00 ; G06F11/30 ; H04N7/167
摘要：
An apparatus for restricting a copy of digital information is provided with a detecting device for detecting a first watermark, which is buried in the digital information and comprises a first signal generated on the basis of a first rule. A burying device buries a second watermark, which comprises a second signal generated on the basis of a second rule and having a structure different from that of the first signal, into the digital information if the first watermark is detected by the detecting device. A recording apparatus is provided with: an inputting device for inputting the digital information; the above mentioned copy restricting apparatus; and a recording device for recording the digital information in which the second watermark is buried by the burying device.
信息查询
