IC card having two output buffers

Details IC card having two output buffers IC card having two output buffers

1987-09-24

1989-07-04

Atkinson, Charles E.

Excavating

235437, 371 16, G06F 1100

Patent

active

048457175

ABSTRACT:
According to a portable electronic apparatus processing system of this invention, an IC card has two output buffers. When the IC card cannot normally receive an instruction sent from an IC card reader/writer, the IC card sets a message indicating this in the first output buffer. On the other hand, when the IC card can normally receive the instruction from the IC card reader/writer, the IC card executes corresponding processing and sets the processed result in the second output buffer. As a result, the normally processed result is not broken upon setting an error message.

REFERENCES:
patent: 4523297 (1985-06-01), Ugon et al.
patent: 4719338 (1988-01-01), Avery et al.
patent: 4736094 (1988-04-01), Yoshida

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