Data processing: financial – business practice – management – or co – Business processing using cryptography
Reexamination Certificate
2011-04-26
2011-04-26
Elisca, Pierre E (Department: 3718)
Data processing: financial, business practice, management, or co
Business processing using cryptography
C705S051000, C705S057000, C713S193000
Reexamination Certificate
active
07933837
ABSTRACT:
A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.
REFERENCES:
patent: 2002/0013772 (2002-01-01), Peinado
patent: 2002/0053090 (2002-05-01), Okayama et al.
patent: 2002/0184515 (2002-12-01), Oho et al.
patent: 2003/0097340 (2003-05-01), Okamoto et al.
patent: 2004/0172533 (2004-09-01), DeMello et al.
patent: 2005/0027871 (2005-02-01), Bradley et al.
patent: 2005/0050345 (2005-03-01), Dowdy et al.
patent: 2005/0240587 (2005-10-01), Asami et al.
patent: 2006/0080539 (2006-04-01), Asami et al.
patent: 2006/0117191 (2006-06-01), Fukushima
patent: 1 128 598 (2001-08-01), None
patent: 2002-311965 (2002-10-01), None
patent: 2002-341876 (2002-11-01), None
patent: 2003-115017 (2003-04-01), None
patent: 2004-264895 (2004-09-01), None
patent: 2004-362011 (2004-12-01), None
patent: 2006-524972 (2006-11-01), None
patent: 2007-526526 (2007-09-01), None
patent: 2004097609 (2004-11-01), None
European Office Action issued on Sep. 18, 2009, for corresponding European Patent Application 06006594.3-1245.
Japanese Office Action issued on Jan. 5, 2010 for corresponding Japanese patent application 2005-104314.
Japanese Office Action issued on Sep. 7, 2010 for corresponding Japanese Appln. No. 2005104314.
Adachi Seiichi
Kawamoto Yoji
Nagao Yutaka
Nakamura Atsushi
Elisca Pierre E
K&L Gates LLP
Sony Corporation
LandOfFree
Content information providing system, content information... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Content information providing system, content information..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Content information providing system, content information... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2695894