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:
Jun. 22, 2010
Filed:
Jul. 26, 2007
Masao Nonaka, Osaka, JP;
Yuichi Futa, Osaka, JP;
Toshihisa Nakano, Osaka, JP;
Kaoru Yokota, Hyogo, JP;
Motoji Ohmori, Osaka, JP;
Masaya Miyazaki, Osaka, JP;
Masaya Yamamoto, Osaka, JP;
Kaoru Murase, Nara, JP;
Senichi Onoda, Osaka, JP;
Masao Nonaka, Osaka, JP;
Yuichi Futa, Osaka, JP;
Toshihisa Nakano, Osaka, JP;
Kaoru Yokota, Hyogo, JP;
Motoji Ohmori, Osaka, JP;
Masaya Miyazaki, Osaka, JP;
Masaya Yamamoto, Osaka, JP;
Kaoru Murase, Nara, JP;
Senichi Onoda, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An executing device conducts playback of contents. The executing device is equipped with a highly efficient processor and reduces the processing load involved in verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the executing device is capable of improving the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed.