Abstract: A method of operating a first electronic device, the method including receiving an identifier of a second electronic device from the second electronic device via a communication link formed by a first communication carrier; checking whether the second electronic device is pre-registered based on the received identifier of the second electronic device; transmitting, when the second electronic device is not pre-registered according to a result of the checking, a first handover request message including alternative carriers to the second electronic device, wherein the alternative carriers are supported by the first electronic device and are listed by priority in the first handover request message; receiving a handover selection message including a second communication carrier, wherein the second communication carrier is supported by the second electronic device and is selected among the alternative carriers; forming a communication link with the second electronic device through the second communication carrier;

Abstract: A display device installed on a steering wheel of a vehicle. The display device includes a display configured to display a GUI (Graphic User Interface) having an indicator indicating a rotation of the steering wheel; a sensing unit configured to sense whether or not the steering wheel is rotated; and a controller configured to rotate the displayed GUI in an opposite direction of a rotation direction of the steering wheel, when the steering wheel is rotated, and change a gauge of the indicator according to an amount of the rotation of the steering wheel.

Abstract: A method of operating a first electronic device, the method including receiving an identifier of a second electronic device from the second electronic device via a communication link formed by a first communication carrier; checking whether the second electronic device is pre-registered based on the received identifier of the second electronic device; transmitting, when the second electronic device is not pre-registered according to a result of the checking, a first handover request message including alternative carriers to the second electronic device, wherein the alternative carriers are supported by the first electronic device and are listed by priority in the first handover request message; receiving a handover selection message including a second communication carrier, wherein the second communication carrier is supported by the second electronic device and is selected among the alternative carriers; forming a communication link with the second electronic device through the second communication carrier;

Abstract: The present invention concerns an first electronic device and a method of operating the first electronic device, which comprises receiving an identifier of a second electronic device from the second electronic device via a communication link formed by a first communication carrier; determining whether the second electronic device is a pre-registered based on the received identifier of the second electronic device; and when the second electronic device is not pre-registered according to a result of the determination, displaying a user interface for selecting a second communication carrier that is to be formed with the second electronic device.

Abstract: A display device installed on a steering wheel of a vehicle. The display device includes a display configured to display a GUI (Graphic User Interface) having an indicator indicating a rotation of the steering wheel; a sensing unit configured to sense whether or not the steering wheel is rotated; and a controller configured to rotate the displayed GUI in an opposite direction of a rotation direction of the steering wheel, when the steering wheel is rotated, and change a gauge of the indicator according to an amount of the rotation of the steering wheel.

Abstract: The present invention concerns an first electronic device and a method of operating the first electronic device, which comprises receiving an identifier of a second electronic device from the second electronic device via a communication link formed by a first communication carrier; determining whether the second electronic device is a pre-registered based on the received identifier of the second electronic device; and when the second electronic device is not pre-registered according to a result of the determination, displaying a user interface for selecting a second communication carrier that is to be formed with the second electronic device.