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:
Nov. 01, 2011
Filed:
Nov. 16, 2000
Masayuki Hatanaka, Kawasaki, JP;
Jun Kamada, Kawasaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Seigou Kotani, Kawasaki, JP;
Takeaki Anazawa, Tokyo, JP;
Tadaaki Tonegawa, Kodaira, JP;
Junji Nakata, Kodaira, JP;
Toshiaki Hioki, Ogaki, JP;
Miwa Kanamori, Ogaki, JP;
Yoshihiro Hori, Gifu, JP;
Masayuki Hatanaka, Kawasaki, JP;
Jun Kamada, Kawasaki, JP;
Takahisa Hatakeyama, Kawasaki, JP;
Takayuki Hasebe, Kawasaki, JP;
Seigou Kotani, Kawasaki, JP;
Takeaki Anazawa, Tokyo, JP;
Tadaaki Tonegawa, Kodaira, JP;
Junji Nakata, Kodaira, JP;
Toshiaki Hioki, Ogaki, JP;
Miwa Kanamori, Ogaki, JP;
Yoshihiro Hori, Gifu, JP;
Fujitsu Limited, Kawasaki, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
Encrypted music data and additional information necessary for accessing a server () are copied from a CD-ROM () onto a memory card (). The memory card () receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music data and control information data (AC) for limiting the number of accesses to the memory card from the server ().