Non-contact IC card and method of using the same

Details Non-contact IC card and method of using the same Non-contact IC card and method of using the same

1991-09-19

1993-06-15

Pitts, Harold

Registers

Records

Conductive

235380, G06K 710

Patent

active

052201589

ABSTRACT:
A non-contact IC card includes an antenna by which data is sent and received without contact, first and second demodulators that demodulate signals received by the antenna, interrupt device interrupts a current flow for operating the first demodulator, a control device selects one of the first and second demodulators via the interrupt device when the second demodulator is selected, data processing device processes data demodulated by the demodulator selected by the control device, a modulator modulates signals from the data processing device and outputs them to the antenna, and a battery supplies power to the respective devices.

REFERENCES:
patent: 4827111 (1989-05-01), Kondo
patent: 4916662 (1990-04-01), Mizuta
patent: 5055661 (1991-10-01), Guchi
patent: 5068521 (1991-11-01), Yamaguchi
patent: 5105074 (1992-04-01), Nara

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