Patent ID: 7014106
Filing Date: 2006-03-21
Classification: G06Q,G07B,G07G

Abstract:
1. An electronic payment system that makes electronic money payment relating to a dealing, comprising: a payment terminal operable to store a first balance of electronic money for said electronic money payment relating to said dealing; a demanding terminal operable to communicate with said payment terminal to demand said payment; and a payment apparatus operable to communicate with said demanding terminal and to store a second balance of electronic money to correspond to an identification number of said payment terminal for validating said payment, wherein said demanding terminal receives from said payment terminal said first balance stored in said payment terminal and transmits said first balance to said payment apparatus, and said payment apparatus detects unfair use of said electronic money by checking said first balance stored in said payment terminal, which was received from said demanding terminal, with said second balance stored in said payment apparatus, wherein the payment apparatus comprises a memory unit operable to store a check balance of said electronic money to correspond to an identification number of said payment terminal, a communication unit operable to receive, from said demanding terminal, a payment amount of said electronic money to be paid by said payment terminal, and a processor operable to update said check balance of said electronic money stored in said memory unit based on said payment amount received from said demanding terminal and said memory unit stores an update time in relation to said electronic money at which said check balance of said electronic money was last updated based on a previous payment amount, and in a case where said communication unit received said payment amount from said demanding terminal, said processor does not update said check balance of said electronic money when a predetermined time has not passed after said update time based on said previous payment amount.