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:
Apr. 19, 2011
Filed:
Feb. 16, 2007
Hiroyuki Yamada, Tokyo, JP;
Norihiko Fujita, Tokyo, JP;
Hisanori Arai, Tokyo, JP;
Koji Ito, Tokyo, JP;
Kazuki Yamada, Tokyo, JP;
Hiroyuki Yamada, Tokyo, JP;
Norihiko Fujita, Tokyo, JP;
Hisanori Arai, Tokyo, JP;
Koji Ito, Tokyo, JP;
Kazuki Yamada, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An object of the present invention is to, in settlement by electronic money, reduce burden on an electronic money server and enhance convenience for users. The function of generating transaction numbers is transferred from the electronic money server to affiliated store servers, so that the transaction numbers are generated by the affiliated store servers. The transaction numbers are each associated with transaction information calculated in accordance with a calculation rule confidential to third parties, such that the electronic money server can detect the presence of alteration of the transaction information based on the transaction number. Furthermore, at the time of generating a transaction number, a seed, which is time-limited secret information confidential to third parties, is inputted to the calculation rule along with the transaction information and used for calculating the transaction number, whereby it is possible to further enhance the level of security.