Abstract: An operating method of a massage chair comprising: driving the massage chair according to a massage mode; acquiring a user state; when he user state has a sleep mode, changing the massage mode to the sleep mode and driving the massage chair according to the changed sleep mode, and controlling an object related to the sleep mode to be adjusted; and driving the massage chair according to an optimal sleep mode by learning an artificial neural network (ANN) so as to acquire the optimal sleep mode corresponding to sleep habit pattern data in the sleep mode.

Abstract: An operating method of a massage chair comprising: driving the massage chair according to a massage mode; acquiring a user state; when he user state has a sleep mode, changing the massage mode to the sleep mode and driving the massage chair according to the changed sleep mode, and controlling an object related to the sleep mode to be adjusted; and driving the massage chair according to an optimal sleep mode by learning an artificial neural network (ANN) so as to acquire the optimal sleep mode corresponding to sleep habit pattern data in the sleep mode.

Abstract: Disclosed is an air conditioner. The air conditioner includes an outdoor unit. The air conditioner further includes an indoor unit located in a building and configured to distribute cool air to a space within the building. The air conditioner further includes an antenna unit configured to sense (i) movement of human bodies within the space or (ii) presence of human bodies located in the space and determine a number of human bodies based on the sensed presence, where the antenna unit includes a housing and a plurality of antenna arrays located on an outer surface of the housing.

Abstract: Provided is an electric product. The electric product includes a main body including at least one food storage unit, at least one camera disposed in the at least one food storage unit to photograph an incoming or outgoing food, and a control unit to determine whether the food is stocked or released on the basis of an image photographed by the at least one camera.

Abstract: Disclosed is an air conditioner. The air conditioner includes an outdoor unit. The air conditioner further includes an indoor unit located in a building and configured to distribute cool air to a space within the building. The air conditioner further includes an antenna unit configured to sense (i) movement of human bodies within the space or (ii) presence of human bodies located in the space and determine a number of human bodies based on the sensed presence, where the antenna unit includes a housing and a plurality of antenna arrays located on an outer surface of the housing.