Abstract: An artificial intelligence device may receive first voice data corresponding to first voice uttered by a user from a first peripheral device, acquire a first intention corresponding to the first voice data, transmit a first search result corresponding to the first intention to the first peripheral device, receive second voice data corresponding to second voice uttered by the user from a second peripheral device, acquire a second intention corresponding to the received second voice data, and transmit a search result corresponding to the second intention to the second peripheral device depending on whether the second intention is an interactive intention associated with the first intention.

Abstract: A display device for controlling a home appliance by using voice recognition according to an embodiment of the present invention includes: a wireless communication unit configured to wirelessly communicate with the home appliance; and a control unit configured to receive a voice command, to obtain intention of the received voice command, to determine whether the obtained intention is a custom operation request for controlling a function specialized for the home appliance, to convert the voice command into a custom operation command for performing the specialized function when the intention is the custom operation request, and to transmit the converted custom operation command to the home appliance through the wireless communication unit.

Abstract: An artificial intelligence device may receive first voice data corresponding to first voice uttered by a user from a first peripheral device, acquire a first intention corresponding to the first voice data, transmit a first search result corresponding to the first intention to the first peripheral device, receive second voice data corresponding to second voice uttered by the user from a second peripheral device, acquire a second intention corresponding to the received second voice data, and transmit a search result corresponding to the second intention to the second peripheral device depending on whether the second intention is an interactive intention associated with the first intention.