Lg Electronics Inc.

Pusan National University

Korea Institute of Science and Technology

Chulmin Park

Jinho Kim

Sunyoung Park

Sangwoo Lee

Kwonhyung Lee

Seontae Yoon

Hakrae Lee

Donggi Eom

Kyongdo Lee

Sukchan Kim

Keri Kim

Juntae Kim

Hanbae Jeon

Kyungdo Lee

Geunwoong Ryu

Endoscope apparatus includes: a tube unit coupled to a rotary shaft to which a rotational force is transmitted so as to be rotatable, the tube unit being formed to extend in one direction; steering unit having one end installed at one end of the tube unit to rotate with respect to the tube unit so that a direction thereof facing forward is adjusted, the steering unit rotating together with the tube unit by the rotational force transmitted from the tube unit; an end effector installed inside the steering unit to rotate together with the steering unit due to the rotation of the steering unit, the end effector being disposed to face forward; and shaft-fixing tube body installed at the end effector, wherein the direction of the steering unit facing forward and relative rotation of the steering unit with respect to the end effector are adjustable.

Endoscope robot

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.

Air conditioner system

Disclosed is an air conditioner and a control method thereof, the air conditioner where a plurality of units is connected wirelessly to receive and transmit data with each other, and the control method in which an address is set in a wireless communication method using an initially set basic channel, a group is set in response to a response signal, and communication is performed with an indoor unit belonging into the same group through a new channel. Accordingly, the plurality of units in the air conditioner is able to receive and transmit data with each other wirelessly, and a group is set with respect to multiple units so that the multiple units are able to communicate with each other directly. Additionally, because a group is able to be easily set with respected to units connected via a pipe by setting a channel, it is possible to reduce a time for setting wireless communication and make the communication setting accurate. The present disclosure allows units to communicate using a different channel according to which group each unit belongs to, thereby preventing intervention between groups and malfunction of units.

Air conditioner and control method thereof

A method for controlling an air conditioner system may include receiving, by one of an outdoor unit and a plurality of indoor units in a group, a command; transmitting, by the outdoor unit, a channel scan command to the plurality of indoor units; 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 to be used among a plurality of pre-set channels of a particular group based on a result of the 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 channel to the plurality of indoor units. According to this method, an optimal wireless communication channel may be set.

Method for controlling air conditioner system

A method for controlling an air conditioner system may include 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 a 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 to be used by 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 channel to the plurality of indoor units. Accordingly, the communication channel may be changed to an optimal communication channel according to a change a communication environment.

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Seoul, South Korea

Chulmin Park