公开(公告)号：US11156379B2

公开(公告)日：2021-10-26

申请号：US16233480

申请日：2018-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Hakrae Lee ,  Hanbae Jeon ,  Jinho Kim ,  Sunyoung Park ,  Chulmin Park ,  Seontae Yoon ,  Kyungdo Lee ,  Kwonhyung Lee

IPC: F24F1/20 ,  F24F11/58 ,  F24F11/54 ,  H04L12/28 ,  F24F11/74 ,  F24F11/84

Abstract: Disclosed is an air conditioner system comprising at least one outdoor unit and a plurality of indoor units. The plurality of units may be grouped into one or more groups. A wireless communication module may be provided at each of the plurality of units and configured to perform wireless communication using a Sub-GHz frequency band. The wireless communication module may include 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 on a Printed Circuit Board (PCB), and configured to output a signal based on the modulated signal, a demodulator configured to demodulate a signal received at the at least one antenna, according to the OFDM, and a decoder configured to decode the demodulated signal. Accordingly, a high-quality wireless communication environment may be implemented.

公开(公告)号：US10269238B2

公开(公告)日：2019-04-23

申请号：US15626316

申请日：2017-06-19

Applicant: LG ELECTRONICS INC.

Inventor： Hakrae Lee ,  Yugu Kim ,  Unsik Park ,  Donggi Eom ,  Hanbae Jeon

IPC: H04L12/707 ,  H04L12/26 ,  H04L12/835 ,  G08C19/00 ,  G08C19/34 ,  F24F11/54 ,  F24F11/88 ,  H04L1/00 ,  H04L12/815 ,  F24F11/30 ,  F24F11/62 ,  F24F1/0003 ,  F24F11/61 ,  F24F11/63 ,  F24F11/64

Abstract: An air conditioner and a communication method for an air conditioner are provided. The air conditioner may include an outdoor unit; an indoor unit; and a central controller connected to the indoor unit through a communication line. The indoor unit may perform periodic communication for transmitting a plurality of periodic packets to at least one of the outdoor unit or the central controller at predetermined periods, and change and transmit the plurality of periodic packets so as to decrease a load on the communication line.