Non-contact IC card with monitor for source power

Details Non-contact IC card with monitor for source power Non-contact IC card with monitor for source power

1998-02-25

2000-06-06

Hajec, Donald

Registers

Records

Particular code pattern

235492, 235488, 365229, 365228, 34082534, 34082531, G06K 1906

Patent

active

060708042

ABSTRACT:
A non-contact type IC card includes a rectifier circuit for supplying a source voltage to respective circuits of an IC card based on the strength of radio waves received from a host computer. A reference voltage generating circuit generates a reference voltage. A comparison circuit compares the source voltage with the reference voltage. A control circuit prohibits the writing of data if the source voltage becomes less than the reference voltage.

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patent: 5801372 (1998-09-01), Yamaguchi
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