Patent ID: 8225008
Filing Date: 2012-07-17
Classification: H04N

Abstract:
1. An image display device comprising: an interface unit which is connected to a first external device; a determining unit which determines whether a second external device having a control ownership of the first external device exists; a control unit which registers, in the first external device, the control ownership of the first external device by storing an identifier of the image display device in the first external device, if it is determined that the second external device having the control ownership of the first external device does not exist; a user interface unit which receives an input of a selection command; and a device list generation unit which generates a device list of a plurality of external devices connected through the interface unit if the selection command is inputted, wherein if it is determined that the second external device having the control ownership of the first external device exists, the control unit transmits a request message requesting a change of registration of the control ownership of the first external device to the second external device, wherein if one of the plurality of external devices in the device list is selected, the control unit transmits a request message, to the selected external device, inquiring whether the control ownership exists in the selected external device.