Information card

Details Information card Information card

1982-03-01

1984-05-08

Pellinen, A. D.

Registers

Records

Conductive

235487, 235441, 357 84, G06K 1906

Patent

active

044477163

ABSTRACT:
Disclosed herein is an information card, which includes a metallic casing and at least one semiconductor chip seated in the metallic casing. A conductor strip, which extends from each of contacts of the semiconductor chip, is disposed in such a way that it can be brought into contact with a signal input/output terminal of a separate signal input/output unit. An elastic magnetic member is provided in a cavity of the metallic casing at a location corresponding to each conductor strip. The elastic magnetic member is fixed at one end thereof on the metallic casing. The free end of the elastic magnetic member is kept in contact with its corresponding conductor strip while the information card is unused. However, the elastic magnetic member is attracted by a magnet in the signal input/output unit to cause its free end to separate from its corresponding conductor strip when the information card is used. Thus, when the information card is not in use, all the conductor strips are connected together through the metallic casing and thus maintained at the same potential, thereby protecting the semiconductor chip from electrostatic breakdown.

REFERENCES:
patent: 3541480 (1968-09-01), Tenenholtz
patent: 3941928 (1976-03-01), Gaind
patent: 4107555 (1978-08-01), Haas et al.
patent: 4361756 (1982-11-01), Parmentier

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