Abstract: An air compressor according to an aspect of the present invention comprises: a housing; a rotating shaft which is disposed in the housing; a compression unit which is connected to the rotating shaft to compress and discharge inlet air; a motor unit which drives the rotating shaft; a control board which controls the motor unit; and a filter unit which filters out noise from external power and supplies the external power to the control board, wherein the housing includes a first cooling flow channel for cooling the motor unit and a second cooling flow channel for cooling the filter unit, and the first cooling flow channel communicates with the second cooling flow channel.

Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.

Abstract: Provided is a method of preparing L-homoserine, the method including contacting an L-homoserine derivative with a solid acid catalyst.

Abstract: A remote controller for controlling an external device by using voice recognition. The remote controller includes a microphone, at least one sensor, a communication interface, and a processor for controlling the microphone, the at least one sensor, and the communication interface. The controller identifies a user utterance intention based on utterance intention information of the remote controller and utterance intention information of the external device. The controller controls whether to supply power to the microphone according to a result of an identification of the user utterance intention, and controls the communication interface to transmit an electrical signal corresponding to a voice of user received through the microphone to a display device.

Abstract: Provided is a method of preparing L-homoserine, the method including contacting an L-homoserine derivative with a solid acid catalyst.

Abstract: An electronic apparatus and a power controlling method thereof are provided. The electronic apparatus may include a wireless communicator that communicates with a remote controller, a wired communicator that connects with an external input device and a processor that controls the wireless communicator to transmit a control signal to the remote controller for turning off power of the connected external input device in response to receiving a signal from the remote controller for turning off power of the electronic apparatus.

Abstract: A remote control apparatus is disclosed. The remote control apparatus comprises: a microphone; a communication unit; a storage unit for storing pattern information of a non-audible sound for identification of the locality of an external electronic device; and a processor for broadcasting, through the communication unit, information acquired on the basis of an ambient sound received through the microphone, and when a non-audible sound based on broadcasted information output from an electronic device is received through the microphone, comparing a pattern of the received non-audible sound with pattern information stored in the storage unit, and transmitting a pairing request signal to the electronic device on the basis of a comparison result.

Abstract: A display apparatus includes: a display; a bezel extended along at least a partial edge of the display and configured to cover the edge of the display; at least one signal transceiver configured to transmit a detection signal to the bezel and receive a reflection signal of the transmitted detection signal; and a controller configured to determine a touch position of a user on the bezel based on time taken from a point of time where the at least one signal transceiver transmits the detection signal to a point of time where the at least one signal transceiver receives the reflection signal.

Abstract: An input device which includes a sensor, a microphone, a communicator, and a processor configured to, based on an operation of a user being identified based on a value sensed through the sensor, transmit utterance intention sensing information to an electronic device, based on a command to initiate a speech recognition and feedback information being received from the electronic device according to the utterance intention sensing information transmitted to the electronic device, activate the microphone and provide a feedback according to the feedback information, and transmit a voice signal received via the microphone to the electronic device.

Abstract: Provided is a method of recovering phosphoric acid from a fermentation broth or a waste liquid thereof and reusing the recovered phosphoric acid in fermentation.

Abstract: A remote controller is provided. The remote controller includes an input interface; a communicator; a storage; and a processor configured to: transmit, to the display apparatus via the communicator, a signal indicating control instructions based on a user input received through the input interface, receive, from the display apparatus via the communicator, information related to a first control code for controlling a first source device of the at least one source device based on the control instructions, identify the first control code from a first control code set stored in the storage based on the information related to the first control code, and control the communicator to transmit a first control signal indicating the first control code to the first source device.

Abstract: A control method of an optical connector and a display apparatus is provided. More particularly, a control method of an optical connector and a display apparatus for changing output of audio according to combination of an optical cable and the optical connector may be provided. Some of the example embodiments provide a control method of an optical connector and a display apparatus which may output audio through one of an internal speaker and an external apparatus connected via an optical cable according to combination of an optical cable and an optical connector.

Abstract: A remote control apparatus is disclosed. The remote control apparatus comprises: a microphone; a communication unit; a storage unit for storing pattern information of a non-audible sound for identification of the locality of an external electronic device; and a processor for broadcasting, through the communication unit, information acquired on the basis of an ambient sound received through the microphone, and when a non-audible sound based on broadcasted information output from an electronic device is received through the microphone, comparing a pattern of the received non-audible sound with pattern information stored in the storage unit, and transmitting a pairing request signal to the electronic device on the basis of a comparison result.

Abstract: A remote controller is provided. The remote controller includes a transmitter; a microphone configured to receive an audio signal output from an audio output apparatus; a communicator comprising communication circuitry configured to perform communication with a display apparatus connected to the audio output apparatus and to transmit the audio signal received through the microphone to the display apparatus; and a processor configured to control the transmitter to transmit to the audio output apparatus a signal for controlling a power of the audio output apparatus based on information indicating whether there is a test tone in an audio signal received by the microphone and received from the display apparatus.

Abstract: Disclosed is an electronic device including a communication circuit, a memory, a microphone, and a processor electrically connected to the communication circuit, the microphone, and the memory. The processor may be configured to receive a user utterance including a specified word through the microphone, to calculate a first confidence level of the received user utterance, to receive a second confidence level of the user utterance calculated by an external electronic device, from the external electronic device through the communication circuit, to compare the first confidence level and the second confidence level, and to perform an operation corresponding to the user utterance when the first confidence level is higher than the second confidence level. Other various embodiments as understood from the specification are also possible.

Abstract: A remote controller includes a communicator and a processor configured to control the communicator to transmit an identification information request signal to a plurality of electronic apparatuses paired with the remote controller. Based on a signal that includes identification information being received from two or more of the plurality of electronic apparatuses in response to the identification information request signal, the processor controls the communicator to identify a direction of the remote controller based on a direction from which each of the signals is received. The processor causes communication to be performed via an exclusive communication channel between the remote controller and one of the plurality of electronic apparatuses based on the identified direction.

Abstract: An electronic apparatus and a power controlling method thereof are provided. The electronic apparatus may include a wireless communicator that communicates with a remote controller, a wired communicator that connects with an external input device and a processor that controls the wireless communicator to transmit a control signal to the remote controller for turning off power of the connected external input device in response to receiving a signal from the remote controller for turning off power of the electronic apparatus.

Abstract: A display apparatus and a method. The display apparatus may include a display, an interface configured to be connected with an output terminal of a source device, a main processor configured to control an operation of the display apparatus and a sub-processor configured to identify whether the output terminal of the source device is connected with the interface. The main processor may identify whether the source device is turned on if the display apparatus is in a first state, and the sub-processor may identify whether the source device is turned on if the display apparatus is in a second state. The main processor may control the display to display a UI based on one or more of whether the interface is connected to the output terminal of the source device and whether the source device is turned on.

Abstract: A remote control apparatus is provided.

Abstract: A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and first and second external electrodes disposed on an external surface of the ceramic body, wherein the dielectric layer contains a barium titanate-based powder particle having a core-shell structure including a core and a shell around the core, the shell having a structure in which titanium is partially substituted with an element having the same oxidation number as that of the titanium in the barium titanate-based powder particle and having an ionic radius different from that of the titanium in the barium titanate-based powder particle, and the shell covers at least 30% of a surface of the core.