IC card and method for writing information therein

Details IC card and method for writing information therein IC card and method for writing information therein

1992-08-10

1993-04-06

Pitts, Harold

Registers

Records

Conductive

235380, 235487, G06K 1906

Patent

active

052006000

ABSTRACT:
An IC card storing therein information transmitted from an external terminal unit includes a processor, an interface, a first memory for storing a system program, a second memory for storing an application program, and a third memory for storing processed data. The second memory includes a latch circuit for temporarily latching data of a plurality of bytes transmitted to the IC card from the external terminal unit, and an electrically erasable and programmable memory for storing data of a predetermined number of bytes when the data is transferred to the latch circuit.

REFERENCES:
patent: 4001550 (1977-01-01), Schatz
patent: 4211919 (1980-07-01), Ugon
patent: 4575621 (1986-03-01), Dreifus
patent: 4837134 (1989-06-01), Bouldin et al.
patent: 4845717 (1989-07-01), Lijing
patent: 4868376 (1989-09-01), Lessin et al.
patent: 4874935 (1989-10-01), Younger
"The Technology of Smartcards and their Applications" by Daniel Artusi, 8079 Electro, 86 and Mini/Micro Northeast 11 (1986) Conference Record, Los Angeles, Calif., USA.

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