Method and apparatus for controlling device in electronic equipment
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United States of America Patent
Stats
-
Oct 21, 2014
Grant Date -
Nov 15, 2012
app pub date -
May 2, 2012
filing date -
May 13, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for controlling a device in electronic equipment having a plurality of devices are provided. The apparatus includes a power supply for supplying power, a slave device including a driving circuit operated according to the supplied power for transmitting and receiving data to and from another device, a switching circuit for connecting the driving circuit to a ground terminal when the switching circuit is turned-on and for opening the driving circuit from the ground terminal when the switching circuit is turned-off, and a host device for transmitting a control signal for turning-on the switching circuit when driving the slave device and for turning-off the switching circuit when not driving the slave device. When the device is not driven, the switching circuit may open a driving circuit from a ground terminal, thereby cutting-off leakage of an electric current through the device.
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