Device for testing smart card and method of testing the smart card
First Claim
1. A test device for testing a contact type, a contactless type or a contact/contactless hybrid type smart card, the device comprising:
- a logic tester which generates a test pattern to test a smart card, and which compares a received response pattern from the smart card with a predetermined response pattern to determine a status of the smart card;
a contactless interface unit that modulates the test pattern onto a carrier signal to transmit the modulated signal to the smart card, demodulates a sub-carrier signal received fom the smart card to restore the response pattern, and provides the logic tester with the response pattern, when the logic tester operates in a contactless test mode; and
a contact interface unit which transmits the test pattern received from the logic tester to the smart card over a wired connection, and which provides the logic tester with the response pattern, when the logic tester operates in a contact test mode,wherein the contactless interface unit comprises;
a logic interface that receives a clock signal, a peak-to-peak voltage signal, a modulation index, and logic data from the logic tester;
an antenna;
a transmitting unit that generates the carrier signal using the clock signal and the peak-to-peak voltage signal, and modulates the logic data based on the modulation index to transmit the modulated logic data via the antenna; and
a receiving unit that demodulates the sub-carrier signal received from the antenna, and restores the response pattern to provide the logic interface with the restored response pattern.
1 Assignment
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Accused Products
Abstract
Devices and methods are provided for testing various types of smart cards including contact, contactless, and hybrid type (contact/contactless) smart cards. A test device includes a logic tester, a contactless interface unit, and a contact interface unit. The logic tester generates a test pattern that is transmitted to a smart card to test the smart card and compares a received response pattern with a response pattern to test a status of the smart card. The contactless interface unit enables a contactless test mode of operation and the contact interface unit enables a contact test mode of operation.
17 Citations
10 Claims
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1. A test device for testing a contact type, a contactless type or a contact/contactless hybrid type smart card, the device comprising:
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a logic tester which generates a test pattern to test a smart card, and which compares a received response pattern from the smart card with a predetermined response pattern to determine a status of the smart card; a contactless interface unit that modulates the test pattern onto a carrier signal to transmit the modulated signal to the smart card, demodulates a sub-carrier signal received fom the smart card to restore the response pattern, and provides the logic tester with the response pattern, when the logic tester operates in a contactless test mode; and a contact interface unit which transmits the test pattern received from the logic tester to the smart card over a wired connection, and which provides the logic tester with the response pattern, when the logic tester operates in a contact test mode, wherein the contactless interface unit comprises; a logic interface that receives a clock signal, a peak-to-peak voltage signal, a modulation index, and logic data from the logic tester; an antenna; a transmitting unit that generates the carrier signal using the clock signal and the peak-to-peak voltage signal, and modulates the logic data based on the modulation index to transmit the modulated logic data via the antenna; and a receiving unit that demodulates the sub-carrier signal received from the antenna, and restores the response pattern to provide the logic interface with the restored response pattern. - View Dependent Claims (2, 3, 4)
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5. A test device for testing a smart card, comprising:
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a logic test circuit which generates a test pattern for testing a smart card, and which processes a response pattern received from the smart card in response to the test pattern to determine a status of the smart card; a contactless interface unit comprising a transmitter and a receiver for wirelessly transmitting a test pattern and a response pattern between the logic test circuit and the smart card, when the logic test circuit operates in a contactless test mode; and a contact interface unit for transmitting a test pattern and a response pattern between the logic test circuit and the smart card over a wired connection, when the logic test circuit operates in a contact test mode, wherein the logic test circuit comprises; a processor; a pattern generator that generates the test pattern in response to a first control signal generated by the processor; and a pattern comparator that compares the response pattern with a predetermined response pattern to test the status of the smart card; a first switch that couples the output of the pattern generator to the contactless interface unit or the contact interface unit under control of the processor; and a second switch that couples the input of the pattern comparator to the contactless interface unit or the contact interface unit under control of the processor. - View Dependent Claims (6, 7, 8, 9)
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10. A method of testing a smart card, the method comprising:
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generating a test pattern; selecting a contact test mode or a contactless test mode; when a contactless test mode is selected, generating a modulation index, generating a clock signal;
generating a VPP (peak-to-peak voltage) signal;
generating a carrier signal based on the VPP signal and clock signal modulating the carrier signal with logic data of the test pattern based on the modulation index to generate a modulated signal;
transmitting the modulated signal to a smart card;
demodulating a sub-carrier signal received from the smart card to restore a response pattern; and
comparing the response pattern and a predetermined response pattern; and
displaying a contactless test mode result based on results of comparing the response pattern and the predetermined response pattern; andwhen a contact test mode is selected, transmitting the test pattern to a smart card via a physical contact terminal;
comparing a response pattern received from the smart card with a predetermined response pattern; and
displaying a contact test mode result based on results of comparing the response pattern and the predetermined response pattern.
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Specification