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US 9,521,485 B2Granted
Voltage supply circuit included in terminal equipment
AssigneeWisol Co., Ltd.
InventorAhn Kook Lee
Life of this patent
Estimating the term…
Abstract
A voltage supply circuit included in an audio signal processing device includes a control unit for controlling a signal output from a terminal equipment; a power supply unit for outputting voltage to an earphone device according to a control signal of the control unit; and a variable circuit unit connected to the power supply unit to convert the voltage output from the power supply unit and transmit the converted voltage to the earphone device.
Claims10
A voltage supply circuit included in a terminal equipment, the voltage supply circuit comprising:
- a control unit for controlling a signal output from the terminal equipment;
- a power supply unit for outputting voltage to an earphone device according to a control signal of the control unit;
- and
- a variable circuit unit connected to the power supply unit to convert the voltage output from the power supply unit and transmit the converted voltage to the earphone device,
- wherein the variable circuit unit comprises:
- a first resistor connected to the power supply unit to adjust magnitude of the voltage output from the power supply unit;
- a second resistor connected to the power supply unit to adjust the magnitude of the voltage output from the power supply unit;
- a third resistor for adjusting the magnitude of the voltage output from the power supply unit according to switching of a first switch;
- a first capacitor for adjusting any one of a speed of increasing and a speed of decreasing the magnitude of the voltage output from the power supply unit;
- a second capacitor for maintaining the voltage output from the power supply unit to a predetermined value;
- and
- the first switch arranged between the power supply unit and the second capacitor and switched according to a control of the control unit.
9 more elements
A terminal equipment supporting an audio device, the terminal equipment comprising:
- an interface unit for connecting a four-pole earphone device;
- an audio processing unit for providing an audio signal to the four-pole earphone device through the interface unit;
- a control unit for controlling a signal output from the terminal equipment to the earphone device;
- a power supply unit for outputting voltage to the earphone device according to a control signal of the control unit;
- and
- a variable circuit unit connected to the power supply unit to convert the voltage output from the power supply unit and transmit the converted voltage to the earphone device,
- wherein the variable circuit unit includes:
- a first resistor connected to the power supply unit to adjust magnitude of the voltage output from the power supply unit;
- a second resistor connected to the power supply unit to adjust the magnitude of the voltage output from the power supply unit;
- a third resistor for adjusting the magnitude of the voltage output from the power supply unit according to switching of a first switch;
- a first capacitor for adjusting any one of a speed of increasing and a speed of decreasing the magnitude of the voltage output from the power supply unit;
- a second capacitor for maintaining the voltage output from the power supply unit to a predetermined value;
- and
- the first switch arranged between the power supply unit and the second capacitor and switched according to a control of the control unit.
11 more elements
Dependencies are inferred from the claim text.