Value transfer system
First Claim
Patent Images
1. A value transfer system comprising:
- a computer;
a plurality of electronic purses;
exchange devices associated with the electronic purses through which the purses communicate with each other to transfer value in transactions which are off-line from the computer; and
,microprocessors respectively contained in the electronic purses or associated exchange devices, said microprocessors being programmed to effect transactions between a pair of purses including a sending purse which sends value and a receiving purse which receives value, wherein each transaction includes at least the microprocessor implemented processes of (a) the receiving purse or an exchange device associated with the receiving purse sending a requested value message denoting a request to receive value, (b) the sending purse or the exchange device associated with the sending purse creating a value message responsive to the requested value message sent by the receiving purse or the exchange device associated with the receiving purse, (c) the sending purse or the exchange device associated with the sending purse creating and storing a commitment message which signifies commitment of the value requested by the request value message sent by the receiving purse or the exchange device associated with the receiving purse, (d) the sending purse or the exchange device associated with the sending purse sending the commitment message to the receiving purse or the exchange device associated with the receiving purse, (e) the sending purse or the exchange device associated with the sending purse sending the value message to the receiving purse or the exchange device associated with the receiving purse, and (f) the receiving purse or the exchange device associated with the receiving purse receiving and processing the value message.
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Abstract
A plurality of electronic purses communicate with each other to transfer values in transactions off-line from a main computer. A transfer message protocol of a transaction between electronic purses includes a commitment message to constitute a proof of posting. This allows interruption of a transaction before the value message itself is set. Escrow type payments and batch processing are facilitated.
315 Citations
26 Claims
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1. A value transfer system comprising:
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a computer; a plurality of electronic purses; exchange devices associated with the electronic purses through which the purses communicate with each other to transfer value in transactions which are off-line from the computer; and
,microprocessors respectively contained in the electronic purses or associated exchange devices, said microprocessors being programmed to effect transactions between a pair of purses including a sending purse which sends value and a receiving purse which receives value, wherein each transaction includes at least the microprocessor implemented processes of (a) the receiving purse or an exchange device associated with the receiving purse sending a requested value message denoting a request to receive value, (b) the sending purse or the exchange device associated with the sending purse creating a value message responsive to the requested value message sent by the receiving purse or the exchange device associated with the receiving purse, (c) the sending purse or the exchange device associated with the sending purse creating and storing a commitment message which signifies commitment of the value requested by the request value message sent by the receiving purse or the exchange device associated with the receiving purse, (d) the sending purse or the exchange device associated with the sending purse sending the commitment message to the receiving purse or the exchange device associated with the receiving purse, (e) the sending purse or the exchange device associated with the sending purse sending the value message to the receiving purse or the exchange device associated with the receiving purse, and (f) the receiving purse or the exchange device associated with the receiving purse receiving and processing the value message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification