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:
Oct. 06, 2009
Filed:
Mar. 28, 2001
Yoshihiro Hori, Gifu, JP;
Hiroshi Takemura, Aichi, JP;
Takatoshi Yoshikawa, Ogaki, JP;
Toshiaki Hioki, Ogaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Shigeki Furuta, Kawasaki, JP;
Masataka Takahashi, Ishikawa, JP;
Takeaki Anazawa, Tokyo, JP;
Tadaaki Tonegawa, Kodaira, JP;
Yoshihiro Hori, Gifu, JP;
Hiroshi Takemura, Aichi, JP;
Takatoshi Yoshikawa, Ogaki, JP;
Toshiaki Hioki, Ogaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Shigeki Furuta, Kawasaki, JP;
Masataka Takahashi, Ishikawa, JP;
Takeaki Anazawa, Tokyo, JP;
Tadaaki Tonegawa, Kodaira, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Fujitsu Limited, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A memory card () includes a memory () to store encrypted content data, a license hold unit () to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (), each storing a plurality of authentication data that are authenticated respectively by a plurality of public authentication keys KPma, KPmb common to the distribution system, and a switch (SW) to selectively provide the data from the plurality of authentication data hold units outside of said recording apparatus according to a request external to the memory card ().