Image display apparatus having function of charging external device and charging method thereof
First Claim
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1. An image display apparatus having a function of charging an external device comprising:
- a universal serial bus (USB) interface which is operable to be connected to an externaldevice through a power supply line and a data transmission line;
a main controller which, if the external device is connected to the USB interface, activates one of the power supply line and the data transmission line according to a type of the external device; and
a USB controller which determines the type of the external device according to whether information is received from the external device,wherein the information corresponds to device information of the external device, and wherein, if information is received from the external device, the main controller activates the data transmission line, and if the information is not received, the main controller activates the power supply line.
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Abstract
An image display apparatus having a function of charging an external device and a charging method thereof are provide. The image display apparatus includes a universal serial bus (USB) interface which is connected to an external device through a power supply line and a data transmission line, and a main controller which, if the external device is connected, activates one of the power supply line and the data transmission line according to a type of the external device. Accordingly, the image display apparatus controls a USB terminal to selectively perform a charging operation or a data transmission operation.
9 Citations
13 Claims
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1. An image display apparatus having a function of charging an external device comprising:
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a universal serial bus (USB) interface which is operable to be connected to an external device through a power supply line and a data transmission line; a main controller which, if the external device is connected to the USB interface, activates one of the power supply line and the data transmission line according to a type of the external device; and a USB controller which determines the type of the external device according to whether information is received from the external device, wherein the information corresponds to device information of the external device, and wherein, if information is received from the external device, the main controller activates the data transmission line, and if the information is not received, the main controller activates the power supply line. - View Dependent Claims (2, 3, 4, 5, 6, 13)
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7. A method for charging an external device, of an image display apparatus which is operable to be connected to the external device through a universal serial bus (USB) interface, the method comprising:
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if the external device is connected to the image display apparatus, determining a mode according to a type of the external device; if the determined mode is a charging mode, activating a power supply line to charge the external device, and if the determined mode is a data transmission mode, activating a data transmission line; and detecting a connection of the external device at the USB interface, and wherein the determined mode is the data transmission mode if information is received from the external device, and the determined mode is the charging mode if the information is not received. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification