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. 11, 2008
Filed:
Dec. 18, 2003
Tohru Nakahara, Osaka, JP;
Takuji Hiramoto, Moriguchi, JP;
Kouji Miura, Matsubara, JP;
Masaya Yamamoto, Hirakata, JP;
Mitsuhiro Inoue, Osaka, JP;
Tohru Nakahara, Osaka, JP;
Takuji Hiramoto, Moriguchi, JP;
Kouji Miura, Matsubara, JP;
Masaya Yamamoto, Hirakata, JP;
Mitsuhiro Inoue, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A group management server in a group information management system includes: a group member terminal list storage unit for storing a group member terminal list; and a secure communication unit for establishing a secure communication channel with a plurality of terminal apparatuses and communicating with each of the terminal apparatuses via the communication channel. Each terminal apparatus includes a tamper-resistant module. The tamper-resistant module includes: a group information storage unit for storing group information securely; a deletion unit for securely executing deletion, which is processing that affects the group member terminal list, of the group information stored in the group information storage unit; and a secure communication unit for establishing a secure communication channel with the secure communication unit and transmitting a complete deletion notification message via the communication channel.