Chip card

Details Chip card Chip card

1990-10-19

1993-04-27

Pitts, Harold

Registers

Records

Conductive

235380, 235487, G06K 1906

Patent

active

052064956

ABSTRACT:
A chip card capable of selectively transmitting data via contacts or transmission coils. The card includes a switching element device, preferably a multiplexer, coupled between a semiconductor device and contacts in a contact field and transmission coils. A voltage transmitted via the coils can be operative to automatically set the multiplexer for transmission via the coils.

REFERENCES:
patent: 4506148 (1985-03-01), Berthold
patent: 4746787 (1988-05-01), Suto et al.
patent: 4791285 (1988-12-01), Ohki
patent: 4818853 (1989-04-01), Ohta et al.
patent: 4853526 (1989-08-01), Effing
patent: 4894522 (1990-01-01), Elliot
patent: 4960983 (1990-10-01), Inoue

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