Noncontact IC device

Details Noncontact IC device Noncontact IC device

1998-09-03

2000-06-13

Le, Thien M.

Registers

Records

Conductive

235441, G06K 706, G06K 1906

Patent

active

060738561

ABSTRACT:
A noncontact IC card is provided with an antenna coil, an IC chip and a short-circuiting circuit formed on a base card. The noncontact IC card is kept inoperative unless the short-circuiting circuit is opened and the noncontact IC card is rendered operative when the short-circuiting circuit is opened. The short-circuiting circuit is formed to extend across a main part and a removable identification part included in the base card. The short-circuiting circuit can be opened by removing the identification part from the base card.

REFERENCES:
patent: 4451903 (1984-05-01), Jordan
patent: 4692601 (1987-09-01), Nakano
patent: 5168151 (1992-12-01), Nara
patent: 5821525 (1998-10-01), Takebayashi
patent: 5889273 (1999-03-01), Goto

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