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:
Mar. 05, 2013
Filed:
Jun. 28, 2005
Makoto Ochi, Osaka, JP;
Hirokazu SO, Osaka, JP;
Shinji Inoue, Osaka, JP;
Kazuya Fujimura, Nara, JP;
Takuji Maeda, Osaka, JP;
Masato Suto, Osaka, JP;
Yukiko Inoue, Osaka, JP;
Makoto Ochi, Osaka, JP;
Hirokazu So, Osaka, JP;
Shinji Inoue, Osaka, JP;
Kazuya Fujimura, Nara, JP;
Takuji Maeda, Osaka, JP;
Masato Suto, Osaka, JP;
Yukiko Inoue, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A recording medium () for storing content that can be read and written by a host device stores a content key (a key that is used for encrypting content) () encrypted in a first format, and a content key () that is encrypted in a second format for content that is the same as the content related to the content key () encrypted in the first format. The first format is, for example, a format used for distributed content, and the second format is a format used with local content.