Abstract: An upgradable electronic device is disclosed. The electronic device includes: a first communication unit receiving data for upgrade from outside the electronic device; and a main controller receiving the data from the first communication unit to retransmit the data or to perform a predetermined function using the data, wherein the first communication unit divides the data into multiple data segments and transmits n (n being a natural number greater than or equal to 2) data segments to the main controller before the first communication unit receives a receipt acknowledgment signal from the main controller.

Abstract: An air conditioner and a method of controlling the same are disclosed herein. The method of controlling the air conditioner includes receiving an electric power rate information, and distributing an internal air from a first indoor room to a second indoor room to reduce a temperature difference between a plurality of indoor rooms. During periods of peak power rates, costs associated with operating the air conditioner may be reduced by limiting operation of the indoor and outdoor units, while adjusting the temperatures of the indoor rooms by distributing air among the plurality of the indoor rooms.

Abstract: An air conditioner and a method of controlling the same are disclosed herein. The method of controlling the air conditioner includes receiving an electric power rate information, and distributing an internal air from a first indoor room to a second indoor room to reduce a temperature difference between a plurality of indoor rooms. During periods of peak power rates, costs associated with operating the air conditioner may be reduced by limiting operation of the indoor and outdoor units, while adjusting the temperatures of the indoor rooms by distributing air among the plurality of the indoor rooms.