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:
Apr. 12, 2011
Filed:
Feb. 12, 2003
Hideyuki Hirano, Kawasaki, JP;
Hideyuki Hirano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Data application method enabling evaluations to be properly received while content is being protected, enabling content users to use only what they want to use in the amount they want to use it, and enabling advertising providers in certainty to have users use ads. The method includes: a step of converting first data for permitting use based on predetermined conditions, into encrypted first data by means of a predetermined encryption key; a step of generating watermarked second data in which the encryption key is embedded, as an invisible electronic watermark, into second data for permitting use unconditionally; and a step of compositing and distributing the encrypted first data and the watermarked second data.