Abstract: Provided are a system and method for a video call. The system for a video call includes one or more terminals configured to transmit images obtained by capturing video call users, and a video call control server configured to generate a combined image by combining the images transmitted by the one or more terminals, and transmit the combined image to the terminals. Here, the respective images are rotated according to information on postures sensed by the terminals and combined into the combined image.

Abstract: A standby electric power cutoff apparatus for an electronic product is disclosed.

Abstract: The present invention relates to an apparatus for blocking standby power of computer peripheral devices, comprising: a synchronization signal sensing control unit which senses the existence of horizontal and vertical synchronization signals provided to a monitor from a computer body, and outputs a switching control signal according to the sensed result; and a power switching unit which is provided with external power and situated on a power supply path for supplying power to the computer peripheral devices, and has a structure adapted for conducting or blocking the corresponding path according to the switching control signal.

Abstract: A motor has a stator and a rotor rotating at the center of the stator, and the rotor includes a concave groove formed with a predetermined depth along the circumference of the rotor, and a plurality of blades formed at the concave groove to protrude therein and having a height not greater than the depth of the concave groove, wherein a flow channel is formed between the stator and the rotor along the length direction of the rotor so that air flows therein, and wherein when the rotor rotates, the plurality of blades guides an air flow to the flow channel so that the rotor is cooled.

Abstract: A cage for a rolling bearing is coupled to a rolling bearing including an inner ring, an outer ring and a plurality of rolling elements rolling between the inner ring and the outer ring to keep intervals of the plurality of rolling elements, wherein the plurality of rolling elements include bodies coupled along a circumference thereof at predetermined intervals, wherein each of the bodies includes a first piece and a second piece which are attachable to each other and detachable from each other. A first coupler and a second coupler configured to be capable of being coupled to each other are respectively formed at the first piece and the second piece, and the first piece and the second piece are primarily coupled by means of a coupling force of the first coupler and the second coupler.

Abstract: An airfoil-magnetic hybrid bearing, which is a combination of a magnetic bearing and airfoil bearing includes a housing, an airfoil bearing, a magnetic bearing, coils, and a coupling segment. The housing is around a rotating shaft of a rotation device. The airfoil bearing is positioned between the housing and the rotating shaft to form dynamic pressure to levitate the rotating shaft during rotation of the rotating shaft. The magnetic bearing includes cores positioned radially between inner surface of the housing and outer surface of the airfoil bearing. The cores are projected to the center of the rotating shaft. The coils wound to the cores to levitate the rotating shaft using a magnetic attractive force generated by a current application thereto. The coupling segment is configured to couple the airfoil bearing to the magnetic bearing directly.

Abstract: Disclosed is a micro gas turbine having a compact structure. The micro gas turbine includes a turbine wheel, a tie shaft connected, at one end thereof, to the turbine wheel, a compressor wheel spaced from the turbine wheel and mounted to the tie shaft, a thrust rotor spaced from the compressor wheel and fixed to an end of the tie shaft, a thrust collar provided on a portion of an outer surface of the thrust rotor, and a sub journal bearing provided between the thrust collar and the compressor wheel.

Abstract: Provided are an apparatus for a multi-party video call, a server for controlling a multi-party video call, and a method of displaying a multi-party image. The apparatus for a multi-party video call includes a receiver module configured to receive a composite image of multi-party video call participants from a server, an image separating module configured to separate images of the respective multi-party video call participants from the composite image received by the receiver module, and a display module configured to arrange the separated images according to a predetermined layout and display the separated images on a screen.

Abstract: The present disclosure provides an apparatus for producing fuel for a fuel cell car which includes: a main reaction chamber including an aluminum coil and configured to produce gas; a sub-chamber including a sodium aqueous solution, the sub-chamber in fluid communication with the main reaction chamber to communicate the produced gas; a circulation pump configured to supply a sodium hydroxide aqueous solution in the sub-chamber to the main reaction chamber when producing the fuel, and further configured to return the sodium hydroxide aqueous solution in the main reaction chamber to the sub-chamber when stopping production of the fuel; and a separator configured to separate hydrogen gas from the produced gas, and supply the hydrogen gas to a fuel cell.

Abstract: A device for controlling the polarity of a microphone of a portable terminal includes: a microphone that includes a current control element that is connected between a first polarity terminal and a second polarity terminal; first and second connection terminals that are connected to the first polarity terminal and the second polarity terminal of the microphone; a control unit that detects the level of at least one of the first and second connection terminals and determines whether the polarity of the microphone has been normally connected; a codec that is connected to a first polarity terminal and a second polarity terminal and codes audio signals; and a polarity adjusting unit that is connected between the first and second connection terminals and the first and second polarity terminals of the codec, and switches the outputs of the first and second connection terminals under the control of the control unit in the case of an abnormal connection, so as to be connected to the codec to align polarity.

Abstract: Provided is an apparatus and method for reducing power consumption of an electronic product. The apparatus and method reduces unnecessary power consumption by cutting off power for driving a load if a predetermined control condition is satisfied in an electronic product operating for a long time. In the electronic product operating for a long time, power for driving the load is cut off to prevent waste of the power if the predetermined control condition is satisfied, and the load is driven only when the predetermined control condition is not satisfied, thereby efficiently reducing the power consumption of the electronic product.

Abstract: Provided is an apparatus and method for reducing power consumption of an electronic product. The apparatus and method reduces unnecessary power consumption by cutting off power for driving a load if a predetermined control condition is satisfied in an electronic product operating for a long time. In the electronic product operating for a long time, power for driving the load is cut off to prevent waste of the power if the predetermined control condition is satisfied, and the load is driven only when the predetermined control condition is not satisfied, thereby efficiently reducing the power consumption of the electronic product.

Abstract: A system for cutting off standby power of the present invention comprises: a plurality of electronic products that are controlled devices; and a main system commonly controlling the same, wherein each of the plurality of electronic products is equipped with a standby power cut-off unit, which is controlled by the main system to open or cut off the power supply path of the power input of a corresponding electronic product, thereby cutting off standby power, and wherein the main system is equipped with a device selection and actuation unit which controls the action of the standby power cut-off unit of each of the electronic products to supply or cut off power to each of the plurality of electronic products.

Abstract: A standby power shutoff device is provided that includes a switch generating power when turning on and generating an “on” signal using the power, a switching unit generating an “on/off” signal for a product, a power supply unit providing power for function units of the product by receiving an external input power, a power switching unit driven in response to a driving signal to cut off or connect a power supply path for the input power provided to the power supply unit, a control unit generating a control signal for powering off the product in response to an “off” signal from the switching unit, and a driving unit receiving power from the “on” signal from the switching unit, driving the power switching unit to connect the power supply path, and driving the power switching unit to cut off the power supply path in response to a “power off” control signal.

Abstract: A power supply device having a standby power cutoff structure, according to the present invention, comprises: a power supply unit which has a plug connected to a socket in order to be supplied with external power, converts the external power appropriately for a power supply target device, and generates self-operating power; a connector unit which includes a power supply terminal connected to a connection terminal of the power supply target device, and a power supply terminal connected to a connection terminal of the power supply target device to supply power to the power supply target device, and opens or blocks a power supply path between the external power and the power supply unit in response to a switching driving signal received from the power supply unit; and a cable for connecting the power supply unit and the connector unit, wherein the power supply unit checks the state of power supplied through a switching unit to output the switching driving signal to the switching unit such that the switching unit

Abstract: The present invention relates to an apparatus for blocking standby power of computer peripheral devices, comprising: a synchronization signal sensing control unit which senses the existence of horizontal and vertical synchronization signals provided to a monitor from a computer body, and outputs a switching control signal according to the sensed result; and a power switching unit which is provided with external power and situated on a power supply path for supplying power to the computer peripheral devices, and has a structure adapted for conducting or blocking the corresponding path according to the switching control signal.

Abstract: An outlet or multi-outlet power strip device for interrupting standby power is provided that includes at least one standby power shut-off unit, which is provided correspondingly to at least one receptacle outlet and either supplies or shuts off power to an electronic product connected to the at least one receptacle outlet depending on the status of the electronic product; an outlet power supply, which receives power from the at least one standby power shut-off unit, and converts and supplies the input power to the outlet; a mode selector, to which a selected mode on whether the outlet should be operated in independent mode or cooperative mode is input; and a controller, which sets a standby current of the electronic product, detects the power status of the electronic product by using the set standby current, and controls the at least one standby power shut-off unit according to the detected power status.

Abstract: Provided are a mobile system for automatically recommending contents, a content recommendation system, and a content recommendation method. The mobile system may include a communication unit to receive playlist information of another user based on at least one of a current position and a position set by a user, and a content recommendation unit to recommend at least one content based on the received playlist information.

Abstract: Disclosed is a system and a method of providing a VOD (Video On Demand; below referred to as ‘VOD’) preview channel through channel zapping in a real-time broadcast service. To do this, the present invention includes a VOD preview channel for a VOD service between real-time broadcast channels, and allows a user to view a VOD screen as well as a real-time channel through channel zapping. As a VOD screen, a playing screen for playing a pre-downloaded VOD preview content for the corresponding VOD preview channel is displayed, and the corresponding VOD can be watched through such functions as an initial viewing and a continuous viewing if a viewing on the screen is wanted.

Abstract: Provided are a standby power cut-off device for automatically cutting off standby power according to power-on/off of an electronic product and a control method for the standby power cut-off device. By providing an electronic product to which the standby power cut-off device and the control method therefor are applied, the present invention can efficiently cut off standby power by using an existing general outlet without a need to use an outlet having a separate function added thereto. Moreover, the present invention automatically cuts off the standby power according to power-off of the electronic product without unplugging the electronic product, thereby maximizing user's convenience.