Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1996-08-27
1999-06-22
Hajec, Donald
Registers
Systems controlled by data bearing records
Credit or identification card systems
235378, G06K 500
Patent
active
059144718
ABSTRACT:
A method for recording usage data of a card-operated device, such as a public telephone set or a vending machine. In particular, usage data, such as totalized charges, is stored in a storage unit associated with the device. At the onset of a transaction, e.g., a telephone call, an initial balance, representing a existing pre-paid credit, is read from memory in the card and transferred to the device. Based upon usage of the device, during the course of the transaction and/or at its completion, the device instructs the card, at least once, to reduce its balance by, e.g., a fixed amount to yield a current balance, which is, in turn, then stored back into the card. The card then sends the current balance back to the device. Device usage for this transaction is subsequently determined, within the device, as a difference between the initial and current balances, and is added to (totalized) usage data stored therein. The security of the data transfers may be cryptographically enhanced. Preferably, the current balance is transmitted from the card to the device unit during a verification procedure through which the authenticity of the card is checked.
REFERENCES:
patent: 3869700 (1975-03-01), Cook et al.
patent: 4529870 (1985-07-01), Chaum
patent: 4746786 (1988-05-01), Heberle et al.
patent: 4780602 (1988-10-01), Kawana et al.
patent: 4864109 (1989-09-01), Minematsu et al.
patent: 4900903 (1990-02-01), Wright et al.
patent: 4930129 (1990-05-01), Takahira
patent: 5012076 (1991-04-01), Yoshida
patent: 5051564 (1991-09-01), Schmidt
patent: 5120939 (1992-06-01), Claus et al.
patent: 5264689 (1993-11-01), Maes et al.
patent: 5266782 (1993-11-01), Alanara et al.
patent: 5359182 (1994-10-01), Schilling
patent: 5428684 (1995-06-01), Akiyama et al.
patent: 5479637 (1995-12-01), Lisimaque et al.
patent: 5495098 (1996-02-01), Pailles et al.
patent: 5644118 (1997-07-01), Hayashida
Hajec Donald
Koninklijke PTT Nederland N.V.
Michaelson Peter L.
Pokotylo John C.
Tremblay Mark
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