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. 27, 2009
Filed:
Feb. 22, 2002
Akira Honjo, Tokyo, JP;
Takeshi Ootsuka, Kanagawa, JP;
Akira Honjo, Tokyo, JP;
Takeshi Ootsuka, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a communication method for enabling communication between a card and a management server that manages the card and for writing information transmitted from the management server to the card, a server state flag and a card state flag are created to indicate the processing state of the management server and the processing state of the card, respectively. The server state flag and the card state flag are occasionally updated during communication between the card and the management server. On the basis of the card state flag, it is determined whether or not the writing by the management server to the card is completed normally. When the writing is not completed normally, the card is rewritten the next time communication is established between the card and the management server, the rewriting being defined in accordance with the card state flag and the server state flag.