IC card processing system capable of determing send timing betwe

Details IC card processing system capable of determing send timing betwe IC card processing system capable of determing send timing betwe

1991-09-17

1995-05-09

Harrell, Robert B.

Package making

535380, 364DIG1, 364DIG2, 364231, 3642311, 364269, 3642715, 3649256, 364932, 3649321, 364950, G06K 500

Patent

active

054148359

ABSTRACT:
According to a portable electronic apparatus processing system of this invention, an IC card sends, to an IC card reader/writer, first timer data included in an answer to reset signal and defining a time after it sends the answer to reset signal to the IC card reader/writer until an instruction is received from the IC card reader/writer. The IC card receives a first instruction from the IC card reader/writer and executes corresponding processing. The IC card also sends second timer data included in the answer to reset signal and defining a time after the processed result is sent to the card reader/writer until the next instruction is received from the card reader/writer. The card reader/writer sets the first timer data in a timer, and sets the second timer data in a memory. The card reader/writer sends the first instruction to the IC card in response to a time out signal from the timer. When the card reader/writer receives the processed result from the IC card, it reads out the second timer data from the memory, and sets the readout data in the timer. Then, the reader/writer sends the next instruction to the IC card in response to the time out signal from the timer.

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Nikkei Electronics; Dec. 2, 1995; p. 281.
English OPatent Abstract of Japan "Data Transmission System," vol. 10, No. 75 (Nov. 5, 1985).

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