DATA CARD WITH USB FUNCTION
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United States of America Patent
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Issued Date -
Jan 26, 2012
app pub date -
Sep 24, 2010
filing date -
Jul 20, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A data card includes a main chip, a switch, and an input/output interface. The input/output interface receives a voltage signal and a control signal, and transmits the voltage signal and the control signal to the switch. When the control signal is a first control signal, the switch switches on, and the voltage signal is transmitted to the main chip via the switch, causing the main chip to enable a universal serial bus (USB) function of the data card. When the control signal is a second signal, the switch switches off, and no voltage signal is supplied to the main chip, causing the main chip to disable the USB function.
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