Electronic value system
First Claim
Patent Images
1. An electronic value system having a plurality of communication terminals, each of which comprises:
- a memory for storing an electronic value, a communication means which performs transmission and reception of said electronic value to outside nodes, thereby acting as an electronic purse of a user;
an electronic bank account holding means provided in a server on a network for accumulating electronic values in each electronic bank account assigned to each user;
a transfer means for transferring said electronic value to a memory of said electronic communication terminals from said electronic bank account holding means via said network;
a transaction log notification means for transmitting a transaction log showing details of a transaction performed by said communication terminal using said electronic value; and
a purse balance information management means for memorizing balance information of said electronic value stored in a memory of said communication terminal provided in said network, receiving a transaction log transmitted from said transaction log notification means, and updating balance information of said electronic value related to said transaction log.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic value amount of an electronic bank account and an electronic value amount stored in user identification module UIM in mobile station MS are each stored in an electronic bank server EBS, and updated by the server when either amount changes as a result of transaction.
61 Citations
33 Claims
-
1. An electronic value system having a plurality of communication terminals, each of which comprises:
-
a memory for storing an electronic value, a communication means which performs transmission and reception of said electronic value to outside nodes, thereby acting as an electronic purse of a user;
an electronic bank account holding means provided in a server on a network for accumulating electronic values in each electronic bank account assigned to each user;
a transfer means for transferring said electronic value to a memory of said electronic communication terminals from said electronic bank account holding means via said network;
a transaction log notification means for transmitting a transaction log showing details of a transaction performed by said communication terminal using said electronic value; and
a purse balance information management means for memorizing balance information of said electronic value stored in a memory of said communication terminal provided in said network, receiving a transaction log transmitted from said transaction log notification means, and updating balance information of said electronic value related to said transaction log. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An electronic value system for performing transmission and reception of an electronic value which is electronic money information between a first communication terminal and a second communication terminal, said first communication terminal comprising:
-
a memory for storing said electronic value, identification information of said issuer who issued said electronic value, and a digital signature provided by said issuer to said identification information; and
a transmission means for transmitting said identification information of the issuer and a digital signature with said stored electronic value to said second communication terminal, said second communication terminal comprising;
a receiving means for receiving identification information of said issuer and a digital signature; and
a confirmation means for confirming validity of said first communication terminal by verifying said received digital signature, and by confirming that said electronic value transmitted from said first communication terminal is issued by said issuer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31)
-
-
19. A communication terminal comprising:
-
a memory for storing an electronic value which is electronic money information and its own identification information therefor;
a communication means for performing transmission and reception of said electronic value between outside nodes;
an identification information exchange means for transmitting its own identification information stored in said memory to said outside nodes, and to obtain identification information of said outside nodes from said outside nodes; and
a log accumulation means, as a transaction log, for accumulating said electronic value amount whose transmission and reception are performed between said outside nodes, said identification information, and identification information of said outside nodes.
-
-
27. A communication terminal comprising:
-
a memory for storing an electronic value which is electronic money information;
identification information of an issuer of the electronic value, and a digital signature provided by the issuer to the identification information a communication means for performing transmission and reception of said electronic value between outside nodes;
an attachment means for attaching to electronic value, identification information of said issuer and said digital signature to be transmitted to said outside nodes by said communication means; and
a confirmation means for confirming authenticity of said electronic value by verifying identification information of said issuer to be attached to electronic value received from said outside nodes by said communication means, and said digital signature.
-
-
32. A server comprising:
-
a means of transfer for transferring via said network, an electronic bank account holding means for accumulating said electronic value into electronic bank account assigned to users, a memory for storing said electronic value, and an electronic value accumulated by said electronic bank account holding means to a communication terminal comprising a communication means for performing transmission and reception of said electronic value between said outside nodes;
a purse balance information management means for memorizing balance information of said electronic value stored in a memory of said communication terminal;
a log obtaining means for obtaining a transaction log showing details of a transaction by using said electronic value in said communication terminal via said network from said communication terminal; and
a purse balance information update means for updating balance information of said electronic value memorized by said purse balance information memory means on a basis of said obtained transaction log. - View Dependent Claims (33)
-
Specification