Registers – Records – Conductive
Patent
1992-07-23
1994-07-05
Hajec, Dnoald
Registers
Records
Conductive
235493, 235380, G06K 1906
Patent
active
053269659
ABSTRACT:
A non-contact type IC card includes a power-supply receiving device for receiving power through electromagnetic coupling with a terminal unit; a signal transmitting/receiving device for exchanging signals with a terminal unit; a signal processing device, connected to the power-supply receiving device and the signal transmitting/receiving device, for processing signals; and a resetting device, connected to the signal processing device, for resetting the signal processing device when there is no signal exchange. A method of initializing a non-contact type IC card which receives power through electromagnetic coupling with a terminal unit and which exchanges signals with the terminal unit includes measuring elapsed time from a signal exchange between an IC card and the terminal unit and resetting the IC card if no signal exchange occurs after the elapsed time exceeds a predetermined value.
REFERENCES:
patent: 4791285 (1988-12-01), Ohki
patent: 4837556 (1989-06-01), Matsushita et al.
patent: 4960983 (1990-10-01), Inoue
patent: 5113184 (1992-05-01), Katayama
patent: 5157247 (1992-10-01), Takahira
patent: 5182442 (1993-01-01), Takahira
patent: 5198647 (1993-03-01), Mizuta
patent: 5202838 (1993-04-01), Inoue
patent: 5212373 (1993-05-01), Fujioka et al.
patent: 5220158 (1993-06-01), Takahira et al.
Hajec Dnoald
Mitsubishi Denki & Kabushiki Kaisha
Young Adrian
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