Abstract:
A mobile terminal includes a communication unit, a display, and a controller for performing a control operation to display a screen related to an electronic device, performing a control operation to request for diagnostic data based on an input for a diagnosis mode provided with the screen related to the electronic device, to display a screen of the diagnostic data, and performing a control operation to request for detailed diagnostic data based on an input for a detailed diagnosis mode, and to display a screen of detailed diagnostic data. Thus, the diagnostic data or detailed diagnostic data about the electronic device may be easily displayed.
Abstract:
Disclosed is an air conditioner system which comprises a plurality of units comprising at least one outdoor unit and a plurality of indoor units, wherein the plurality of units comprises a wireless communication module configured to perform wireless communication using a Sub-GHz frequency band between the plurality of units, wherein the wireless communication module includes: an encoder configured to encode a predetermined signal; a modulator configured to modulate the encoded signal according to Orthogonal Frequency Division Multiplexing (OFDM) using multiple subcarriers; at least one antenna having an antenna pattern formed in a Printed Circuit Board (PCB), and configured to output a signal based on the modulated signal; a demodulator configured to demodulate a signal, received from the at least one antenna, according to the OFDM; and a decoder configured to decode the demodulated. Accordingly, a high-quality wireless communication environment may be implemented.
Abstract:
Disclosed is a control method of an air conditioner system including: when a preset reception rate degradation error occurs in one or more indoor unit, transmitting a channel switch request signal to an outdoor unit belonging to the particular group; performing a channel scan by each of the outdoor unit and the plurality of indoor units; transmitting, by the plurality of indoor units, channel scan results to the outdoor unit; determining, by the outdoor unit, a channel for use of the particular group based on a result of a channel scan performed by the outdoor unit and the channel scan results received from the plurality of indoor units; and outputting, by the outdoor unit, information on the determined channel to the plurality of indoor units. Accordingly, it is possible to change to a good communication channel according to change in a communication environment.
Abstract:
Disclosed is a control method of an air conditioner system including: receiving, by one of an outdoor unit and a plurality of indoor units, a command; transmitting, by the outdoor unit belonging to the particular group, a channel scan start command to the plurality of indoor units belonging to the particular group; performing a channel scan by each of the outdoor unit and the plurality of indoor units; transmitting, by the plurality of indoor units, channel scan results to the outdoor unit; determining, by the outdoor unit, a channel for use of the particular group based on a result of a channel scan performed by the outdoor unit and the channel scan results received from the plurality of indoor units; and outputting, by the outdoor unit, information on the determined channel to the plurality of indoor units. According to the control method, an optimal wireless communication channel may be set.
Abstract:
An air conditioner includes an outdoor unit; an indoor unit; and a central controller connected to the indoor unit through a communication line. The indoor unit performs periodic communication for transmitting a plurality of periodic packets to at least one of the outdoor unit and the central controller at predetermined periods, and changes and transmits the plurality of periodic packets so as to decrease load of the periodic communication.