The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2006
Filed:
Dec. 03, 1999
Hiroshi Yoshiura, Kawasaki, JP;
Hiroyuki Kimura, Yokohama, JP;
Akira Ogino, Tokyo-to, JP;
Yoshiaki Moriyama, Tsurugashima, JP;
Kazumi Sugaya, Tsurugashima, JP;
Hiroshi Yoshiura, Kawasaki, JP;
Hiroyuki Kimura, Yokohama, JP;
Akira Ogino, Tokyo-to, JP;
Yoshiaki Moriyama, Tsurugashima, JP;
Kazumi Sugaya, Tsurugashima, JP;
Abstract
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.