Invention Grant
- Patent Title: Digital work protection system, record/playback device, recording medium device, and model change device
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Application No.: US10180456Application Date: 2002-06-27
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Publication No.: US07698571B2Publication Date: 2010-04-13
- Inventor: Shunji Harada , Masaya Miyazaki , Shinichi Matsui , Shinji Inoue , Natsume Matsuzaki , Naohiko Noguchi
- Applicant: Shunji Harada , Masaya Miyazaki , Shinichi Matsui , Shinji Inoue , Natsume Matsuzaki , Naohiko Noguchi
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2001-208532 20010709
- Main IPC: G06F12/14
- IPC: G06F12/14 ; G06F17/30 ; H04N7/16 ; G06F11/30 ; G06F7/04

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.
Public/Granted literature
- US20030007640A1 Digital work protection system, record/playback device, recording medium device, and model change device Public/Granted day:2003-01-09
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