A video display device performing wireless communication with a plurality of external devices, the video display device comprising: a display unit; a tuner configured to receive advertisement data including a plurality of content items of different categories, wherein the advertisement data is received as a broadcast signal; a sensing unit configured to sense a current state of the display device; a wireless communication unit configured to receive state information of an external device, wherein the state information of the external device comprises information related to driving the external device and information regarding the external device itself, a memory configured to store the state information of the external device, and a controller configured to: when new state information is received from the external device, control the memory to delete the previously stored state information and store the new state information in the memory; analyze a storage date on which the state information was stored in the memory or analyze a date on which the state information was generated; compare the plurality of content items with the state information of the external device to determine a relevant category of the content items, wherein if a difference between a current date and the analyzed date is within or equal to a preset reference period, the controller is further configured to: search for content items that match both, the category and the current state of the display device; control the display unit to output advertisement data including a searched content item of the relevant category required for driving the external device, and else, the controller is configured to control the display unit to output the information regarding the external device itself. a display unit; a tuner configured to receive advertisement data including a plurality of content items of different categories, wherein the advertisement data is received as a broadcast signal; a sensing unit configured to sense a current state of the display device; a wireless communication unit configured to receive state information of an external device, wherein the state information of the external device comprises information related to driving the external device and information regarding the external device itself, a memory configured to store the state information of the external device, and a controller configured to: when new state information is received from the external device, control the memory to delete the previously stored state information and store the new state information in the memory; analyze a storage date on which the state information was stored in the memory or analyze a date on which the state information was generated; compare the plurality of content items with the state information of the external when new state information is received from the external device, control the memory to delete the previously stored state information and store the new state information in the memory; analyze a storage date on which the state information was stored in the memory or analyze a date on which the state information was generated; compare the plurality of content items with the state information of the external device to determine a relevant category of the content items, wherein if a difference between a current date and the analyzed date is within or equal to a preset reference period, the controller is further configured to: search for content items that match both, the category and the current state of the display device; control the display unit to output advertisement data including a searched content item of the relevant category required for driving the external device, and search for content items that match both, the category and the current state of the display device; control the display unit to output advertisement data including a searched content item of the relevant category required for driving the external device, and else, the controller is configured to control the display unit to output the information regarding the external device itself.