Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2006-03-28
2006-03-28
Trammell, James P (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S001100, C705S056000, C084S607000, C706S023000
Reexamination Certificate
active
07020636
ABSTRACT:
A storage-medium rental system includes a portable storage medium to be rented to the user, a portable semiconductor memory owned by the user, a rental-shop apparatus owned by the rental agent, and a reproduction apparatus owned by the user. The storage medium prestores encrypted content which is generated by encrypting digital work by using a content encryption key. The semiconductor memory has an area for securely storing a content decryption key. The rental-shop apparatus stores a content decryption key for decrypting the encrypted content. The rental-shop apparatus writes the content decryption key to the semiconductor memory. The reproduction apparatus securely reads the content decryption key from the semiconductor memory, reads the encrypted content from the storage medium, decrypts the encrypted content by using the content decryption key, and reproduces the decrypted content.
REFERENCES:
patent: 5629980 (1997-05-01), Stefik et al.
patent: 5809145 (1998-09-01), Slik et al.
patent: 5857020 (1999-01-01), Peterson, Jr.
patent: 6131090 (2000-10-01), Basso et al.
patent: 6236971 (2001-05-01), Stefik et al.
patent: 6240401 (2001-05-01), Oren et al.
patent: 6334118 (2001-12-01), Benson
patent: 6463539 (2002-10-01), Mochizuki
patent: 6470085 (2002-10-01), Uranaka et al.
patent: 6515212 (2003-02-01), Taira et al.
patent: 6708879 (2004-03-01), Hunt
patent: 6789192 (2004-09-01), Hirota et al.
patent: 2002/0026445 (2002-02-01), Chica et al.
patent: WO 95/16238 (1995-06-01), None
A License Management Model to Support B2C and C2C music sharing, S.H. Kwok and S.M. Lui.
Minami Masataka
Ohmori Motoji
Yamamoto Masaya
Matsushita Electric - Industrial Co., Ltd.
Trammell James P
Wenderoth , Lind & Ponack, L.L.P.
Winter John M.
LandOfFree
Storage-medium rental system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Storage-medium rental system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage-medium rental system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3579301