IC card with secure mass storage memory

Details IC card with secure mass storage memory IC card with secure mass storage memory

1988-04-07

1990-10-02

Levy, Stuart S.

Registers

Systems controlled by data bearing records

Credit or identification card systems

369 14, 235380, 235492, 235487, G06K 701, G06K 1908, G06K 19073

Patent

active

049609823

ABSTRACT:
An information recording system utilizing an IC card having an onboard microprocessor, an onboard semiconductor memory which can be accessed from outside the card only by way of the microprocessor, and an onboard mass storage device also accessible from outside the card but directly rather than through the microprocessor. The mass storage device can be a mass storage magnetic recording media or preferably an optical storage device, and provides a relatively inexpensive information storage media for large amounts of data. The semiconductor memory stores information which is necessary to properly access the information in the mass storage memory, and outputs that information to an associated interface unit only by way of the microprocessor. Thus, address or encryption information which is stored in the semiconductor memory is secure because of access being limited by the onboard microprocessor, and securing that information makes more secure the information stored in the mass storage device.

REFERENCES:
patent: 4284716 (1981-08-01), Drexler et al.
patent: 4338644 (1982-07-01), Staar
patent: 4672182 (1987-06-01), Hirokawa
patent: 4672600 (1987-06-01), Balston et al.
patent: 4677604 (1987-06-01), Selby et al.
patent: 4723181 (1988-02-01), Hickok
patent: 4746788 (1988-05-01), Kawana
Nikkei Electronics, No. 401, pp. 107-115 (Aug. 11, 1986).

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