The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Nov. 29, 2000
Yoshihiro Hori, Gifu, JP;
Toshiaki Hioki, Ogaki, JP;
Miwa Kanamori, Ogaki, JP;
Seigou Kotani, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Tadaaki Tonegawa, Kodaira, JP;
Takeaki Anazawa, Tokyo, JP;
Yoshihiro Hori, Gifu, JP;
Toshiaki Hioki, Ogaki, JP;
Miwa Kanamori, Ogaki, JP;
Seigou Kotani, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Tadaaki Tonegawa, Kodaira, JP;
Takeaki Anazawa, Tokyo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A memory card () decodes data delivered to a data bus (BS) and extracts a session key (Ks) sent from a server from the data. Based on the session key (Ks), an encrypting section () encrypts a public encryption key (KPm ()) of the memory card () and delivers it to a server through the data bus (BS). The memory card () receives data including a license key (Kc) and a license (ID) encrypted with the public encryption key (KPm ()) different with memory card to memory card, decrypts the data, encrypted it again with uniquely given secret key (K()), and stores it in a memory ().