Patent ID: 9217578
Filing Date: 2015-12-22
Classification: F24F,H04B

Abstract:
1. An air conditioner comprising: at least one indoor unit; and a wired controller connected to the at least one indoor unit through two lines to receive power from the at least one indoor unit and to perform data communication with the at least one indoor unit, wherein each of the at least one indoor unit and the wired controller comprises a communication unit to modulate a first frequency communication signal into a second frequency communication signal and transmit the second frequency communication signal when performing data communication and to demodulate a received second frequency communication signal into a first frequency communication signal, and wherein the communication unit of the wired controller demodulates the received second frequency communication signal into the first frequency communication signal using a voltage difference between second frequency communication signals received through the two lines, and wherein second frequencies of the second frequency communication signals each are higher than first frequencies of the first frequency communication signals.