Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2006-11-07
2006-11-07
Sheikh, Ayaz (Department: 2131)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C705S057000, C705S058000, C705S059000, C380S201000, C380S202000
Reexamination Certificate
active
07134026
ABSTRACT:
In a cellular phone, a controller stores content data received from a distribution server into a memory. When the content data is to be transmitted to a memory card, a random number key generator generates a license key, and an encryption processing unit encrypts the content data using the license key. The controller transmits encrypted content data to a memory card via a memory card interface. Then, the controller deletes the content data stored in the memory. As a result, distribution of content data that must be deleted when transferring to another apparatus can be facilitated while protecting the copyright.
REFERENCES:
patent: 5715403 (1998-02-01), Stefik
patent: 5758068 (1998-05-01), Brandt et al.
patent: 5915021 (1999-06-01), Herlin et al.
patent: 6085323 (2000-07-01), Shimizu et al.
patent: 6185683 (2001-02-01), Ginter et al.
patent: 6223288 (2001-04-01), Byrne
patent: 6367019 (2002-04-01), Ansell et al.
patent: 6772133 (2004-08-01), Kambayashi et al.
patent: 2002/0010681 (2002-01-01), Hillegass et al.
patent: 2002/0049679 (2002-04-01), Russell et al.
patent: 2002/0065780 (2002-05-01), Barritz et al.
patent: 2002/0091644 (2002-07-01), Wong et al.
patent: 1 209 657 (2002-05-01), None
patent: 1 221 690 (2002-07-01), None
patent: WO 01/13358 (2001-02-01), None
patent: WO 01/16932 (2001-03-01), None
Hioki Toshiaki
Hori Yoshihiro
Horiuchi Keiji
Yoshikawa Takatoshi
Chen Shin-Hon
Sanyo Electric Co,. Ltd.
Sheikh Ayaz
Westerman, Hattori, Daniels & Adrian , LLP.
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