TOUCH SCREEN DEVICE
First Claim
1. A touch screen device, comprising:
- a circuit board including a power control unit;
a power input port located on the circuit board;
a main battery electronically connected to the power input port; and
a stylus including a backup battery electronically connected to the power input port;
wherein the power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device;
according to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device.
1 Assignment
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Accused Products
Abstract
A touch screen device includes a circuit board, a power input port located on the circuit board, a main battery electronically connected to the power input port, and a stylus. A backup battery electronically connected to the power input port is located in the stylus. A power control unit is located on the circuit board. The power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device. According to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device.
10 Citations
14 Claims
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1. A touch screen device, comprising:
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a circuit board including a power control unit; a power input port located on the circuit board; a main battery electronically connected to the power input port; and a stylus including a backup battery electronically connected to the power input port; wherein the power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device;
according to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch screen device, comprising:
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a circuit board; a power input port located on the circuit board; a main battery electronically connected to the power input port; and a stylus; wherein the stylus is a backup battery electronically connected to the power input port;
a power control unit is located on the circuit board, the power control unit detects the voltage value of the main battery, and compares the voltage value of the main battery with a predetermined voltage of the touch screen device;
according to the comparative result, the power control unit switches between the main battery and the backup battery to provide power supply to the touch screen device. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification