# US 5,905,976 A · System of secured payment by the transfer of electronic money through an interbank network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,905,976 A - Document ID: US5905976A - Status: Granted - Kind: A - Application number: 08/684,309 - Filed: 1996-07-17 - Granted: 1999-05-18 - Earliest claimed: 1995-07-19 - Assignees: France Telecom; La Poste; Sintef Delab - Inventors: Stig Frode Mjolsnes; Rolf Michelsen; Marie-Josephe Revillet; Aymeric De Solages - Web page: https://patentgrep.com/patent/US5905976A ## CPC - G06Q 20/0425: {the cheque being electronic only} - G06Q 20/04: Payment circuits - G06Q 20/10: specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems - G06Q 20/3678: {e-cash details, e.g. blinded, divisible or detecting double spending} - G07F 7/1016: {Devices or methods for securing the PIN and other transaction-data, e.g. by encryption (arrangements for secret communication, see H04L9/00)} - H04L 9/3257: {using blind signatures} - H04L 2209/56: Financial cryptography, e.g. electronic payment or e-cash - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G07F: COIN-FREED OR LIKE APPARATUS (coin sorting G07D3/00; coin testing G07D5/00; {handling coins or paper currencies apart from payment activated apparatus G07D; payment architectures, schemes or protocols G06Q20/00}) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A system of payment by the transfer of electronic money and especially of electronic cheques with blind signatures comprises an interbank compensation unit, an interbank network, and a verification unit. The interbank compensation unit permits the transfer of electronic money between multiple bank units in payment of amounts owed therebetween arising from the electronic cheques. The interbank network links the interbank compensation unit to the multiple bank units, and enables the transfer of electronic cheques from a payment terminal to the interbank compensation unit. The verification unit is linked to the interbank compensation unit, and is capable of verifying the authenticity and the non-reutilization of electronic cheques which have already travelled through the interbank network after a first payment. ## Claims ### Claim 1 A system of payment by the transfer of electronic money and especially of electronic cheques with blind signature, the system comprising: an interbank compensation unit, said interbank compensation unit permitting the transfer of electronic money between multiple bank units in payment of amounts owed therebetween arising from said electronic cheques; an interbank network, said interbank network linking said interbank compensation unit to said multiple bank units, and said interbank network enabling the transfer of electronic cheques from a payment terminal to said interbank compensation unit; and a verification unit, said verification unit being capable of verifying the authenticity and the non-reutilization of electronic cheques which have already travelled through said interbank network after a first payment, said verification unit being linked to said interbank compensation unit. ### Claim 2 (depends on 1) A system of payment according to claim 1, wherein said verification unit includes processing means for carrying out operations of authentication and operations to compare electronic signatures of cheques received with already recorded signatures. ### Claim 3 (depends on 2) A system of payment according to claim 2, wherein said processing means furthermore make it possible to carry out a search for an identity of a signer of electronic cheques that have been used several times. ### Claim 4 (depends on 1) A system of payment according to claim 1, wherein said verification unit comprises means for storing the electronic cheques transferred by said interbank network during a collection operation. ### Claim 5 (depends on 1) A system of payment according to claim 1, wherein, said verification unit comprises means for storing a black list in which non-authenticated or reutilized electronic cheques are recorded. ### Claim 6 (depends on 1) A system of payment according to claim 1, wherein said interbank compensation unit has an entity enabling a routing of information elements received from a collecting bank, and a compensation entity. ### Claim 7 (depends on 6) A system of payment according to claim 6, wherein said compensation entity includes processing means and storage means enabling determining and recording of debit operations of each issuing bank and credit operations of each collecting bank. ### Claim 8 (depends on 6) A system of payment according to claim 6, wherein said collecting bank includes processing and storage means for carrying out a test of consistency of the information elements collected and, on the basis of these information elements, storing the electronic cheques accepted after this test. ### Claim 9 (depends on 8) A system of payment according to claim 8, wherein said collecting bank furthermore comprises a processing and storage entity enabling recording of all the electronic cheques that are processed by said verification unit and found to be valid as well as an updating of accounts for each tradesman who is a customer of this bank. ### Claim 10 A method of payment by the transfer of electronic cheques, the method comprising: receiving payment at a payment terminal, said payment being made in the form of one of said electronic cheques; performing a first test to verify the authenticity of said electronic cheque at said payment terminal; transferring said electronic cheque from said payment terminal to a collecting bank unit; transferring said electronic cheque from said collecting bank unit to an interbank compensation unit by way of an interbank network, said interbank compensation unit permitting the transfer of electronic money between multiple bank units in payment of amounts owed therebetween arising from said electronic cheques, and said interbank network linking said interbank compensation unit to said multiple bank units; and performing a second test to verify the authenticity and the non-reutilization of said electronic cheque at a verification unit (1) after the first test to verify the authenticity of said electronic cheque has been performed at said payment terminal, and (2) after said electronic cheque has been transferred from said collecting bank unit to said interbank compensation unit by way of said interbank network. ### Claim 11 (depends on 10) A method according to claim 10, further comprising the step of carrying out operations of authentication and operations to compare electronic signatures of cheques received with already recorded signatures. ### Claim 12 (depends on 11) A method according to claim 11, further comprising the step of carrying out a search for an identity of a signer of electronic cheques that have been used several times. ### Claim 13 (depends on 10) A method according to claim 10, further comprising the step of storing the electronic cheques transferred by said interbank network during a collection operation. ### Claim 14 (depends on 10) A method according to claim 10, further comprising the step of storing a black list in which non-authenticated or reutilized electronic cheques are recorded. ### Claim 15 (depends on 10) A method according to claim 10, further comprising the step of routing information elements received from a collecting bank, said routing step being performed by said interbank compensation unit. ### Claim 16 (depends on 15) A method according to claim 15, further comprising the steps of determining and recording of debit operations of each issuing bank and credit operations of each collecting bank. ### Claim 17 (depends on 15) A method according to claim 15, further comprising the step of carrying out a test of consistency of the information elements collected and, on the basis of these information elements, storing the electronic cheques accepted after this test. ### Claim 18 (depends on 17) A method according to claim 17, further comprising the step of recording of all the electronic cheques that are processed by said verification unit and found to be valid and updating of accounts for each tradesman who is a customer of this bank. ### Claim 19 A system of payment by the transfer of electronic cheques, the system comprising: (A) a payment terminal, said payment terminal being capable of receiving a payment in the form of an electronic cheque and of performing a first test to verify the authenticity of said electronic cheque; (B) multiple bank units, including (1) an issuing bank unit, and (2) a collecting bank unit, said collecting bank unit being coupled to said payment terminal and receiving said electronic cheque from said payment terminal; (C) an interbank compensation unit, said interbank compensation unit permitting the transfer of electronic money between said multiple bank units in payment of amounts owed therebetween arising from said electronic cheques; (D) an interbank network, said interbank network linking said interbank compensation unit to said multiple bank units, and said interbank network enabling the transfer of electronic cheques from said collecting bank unit to said interbank compensation unit; and (E) a verification unit, said verification unit being capable of performing a second test to verify the authenticity and the non-reutilization of electronic cheques which have already travelled through said interbank network after a first payment and which have already been authenticated at said payment terminal, said verification unit being linked to said interbank compensation unit.