Elan Microelectronics Corporation

Hsiao-Hua Tsai

I-Hau Yeh

Ta-Huang Liu

Ming-Ho Wang

A smart card has a light-emitting element, a fingerprint sensor and a microcontroller. An operation of the smart card has a plurality of indication periods to indicate operation statuses of the smart card by the light-emitting element. The control method of the smart card includes generating a light source control signal, controlling a current supplied to the light-emitting element by the microcontroller according to the light source control signal, and decreasing the current supplied to the light-emitting element or stop the current supplied to the light-emitting element during at least one power-saying period in a first indication period of the plurality of indication periods.

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Zhubei, Taiwan

Hsiao-Hua Tsai