Semiconductor memory card that records contents for trial...

Details Semiconductor memory card that records contents for trial... Semiconductor memory card that records contents for trial...

2005-05-31

2005-05-31

Elisca, Pierre Eddy (Department: 3621)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C705S064000, C705S067000, C705S050000

Reexamination Certificate

active

06901385

ABSTRACT:
A semiconductor memory card which allows consumers to access and purchase content while protecting the copyright of the content. The memory card has a unique media ID assigned thereto and includes a secure data area and a non-secure data area. The secure are is accessible by an apparatus whose authenticity is verified, and the non-secure area is accessible by the apparatus regardless of such verification. The secure area stores a first encrypted content which is generated by encrypting a first content key by using the media ID, and the non-secure data area stores trial data and purchase data which can be decrypted. The trial data includes a first content which is encrypted by using the first content key, and the purchase data includes a second content which is encrypted by using a second content key. The purchase data can be decrypted when fee processing is performed.

REFERENCES:
patent: 5615269 (1997-03-01), Micali
patent: 6606707 (2003-08-01), Hirota et al.
patent: 6687683 (2004-02-01), Harada et al.
patent: 02000338996 (2000-12-01), None
IBM Technical Bulletin; Data Transfer Facility Interface for Semiconductor Memory testing; Feb. 1998; vol. 30; Issue No. 9.*
Citizen Watch Co Ltd., IC Card, Information Process, Section P, section No. 668, vol. 12, No. 53, p. 93, Feb. 18, 1988.

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