Patent ID: 8866533
Filing Date: 2014-10-21
Classification: H03K

Abstract:
1. An apparatus for controlling a device in electronic equipment including a plurality of devices, the apparatus comprising: a power supply configured to supply power; a slave device comprising a driving circuit configured to drive the power supplied from the power supply to the slave device; a switching circuit configured to connect the driving circuit to a ground terminal when the switching circuit is turned-on and to disconnect the driving circuit from the ground terminal when the switching circuit is turned-off; a host device configured to transmit a control signal for turning-on the switching circuit when driving the power to the slave device and to turn-off the switching circuit when not driving the power to the slave device, and a slave supply unit connected with the slave device configured to supply a sub power to the slave device according to the control signal, wherein the control signal turns-on the slave supply unit to supply the sub bower or turns-off the slave suly unit to not suly the sub power.