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. 13, 2010
Filed:
Jun. 27, 2002
Shunji Harada, Osaka, JP;
Masaya Miyazaki, Ikeda, JP;
Shinichi Matsui, Kobe, JP;
Shinji Inoue, Neyagawa, JP;
Natsume Matsuzaki, Mino, JP;
Naohiko Noguchi, Yokohama, JP;
Shunji Harada, Osaka, JP;
Masaya Miyazaki, Ikeda, JP;
Shinichi Matsui, Kobe, JP;
Shinji Inoue, Neyagawa, JP;
Natsume Matsuzaki, Mino, JP;
Naohiko Noguchi, Yokohama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A system includes of a main device and a recording medium device. The main device includes a reception unit that receives a digital work from an external distribution server, an internal storage area for storing the digital work, a playback unit that plays back the digital work, and a unique information storage area for storing information that is unique to the main device. The main device also includes an encryption unit that encrypts the digital work using the unique information, a decryption unit that decrypts, using the unique information, the encrypted digital work having been read from the recording medium device, a write unit that writes the encrypted digital work into the recording medium device which is portable, and a read unit that reads the encrypted digital work from the recording medium device.