Wireless charging device and method for controlling the same
First Claim
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1. A wireless charging device, comprising:
- a sensor unit configured to sense an input from an external device and generating a wake-up signal;
a control unit, in response to receiving the wake-up signal, configured to exit from a sleep mode to enter an active mode, and configured to generate an activation signal;
a detection unit configured to receive the activation signal from the control unit to detect a mobile terminal; and
a power supply unit, in response to the detection unit detecting the mobile terminal, configured to wirelessly supply power to the mobile terminal,wherein the detection unit comprises a detection coil configured to detect the mobile terminal, the detection unit is configured to apply a reference current to the detection coil to thereby detect a change in impedance, and the detection unit is configured to apply a current having a level higher than that of the reference current to the detection coil in response to no change in impedance being detected.
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Abstract
A wireless charging device may include: a sensor unit sensing an input from an external device and generating a wake-up signal; a control unit, upon receiving the wake-up signal, exiting from a sleep mode to enter an active mode, and generating an activation signal; a detection unit receiving the activation signal from the control unit to detect a mobile terminal; and a power supply unit, in the case that the detection unit detects the mobile terminal, supplying power to the mobile terminal wirelessly.
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Citations
13 Claims
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1. A wireless charging device, comprising:
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a sensor unit configured to sense an input from an external device and generating a wake-up signal; a control unit, in response to receiving the wake-up signal, configured to exit from a sleep mode to enter an active mode, and configured to generate an activation signal; a detection unit configured to receive the activation signal from the control unit to detect a mobile terminal; and a power supply unit, in response to the detection unit detecting the mobile terminal, configured to wirelessly supply power to the mobile terminal, wherein the detection unit comprises a detection coil configured to detect the mobile terminal, the detection unit is configured to apply a reference current to the detection coil to thereby detect a change in impedance, and the detection unit is configured to apply a current having a level higher than that of the reference current to the detection coil in response to no change in impedance being detected. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling a wireless charging device, comprising:
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sensing, by a sensor unit, an input from an external device to generate a wake-up signal; in response to receiving the wake-up signal, by a control unit, exiting from a sleep mode to enter an active mode, and generating an activation signal; receiving, by a detection unit, the activation signal and detecting a mobile terminal; and wirelessly supplying power to the mobile terminal in response to the mobile terminal being detected, wherein the detecting of the mobile terminal comprises; applying a reference current to a detection coil to detect a change in impedance; and applying a current having a level higher than that of the reference current to the detection coil in response to no change in impedance being detected, to detect a change in impedance. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification