Abstract: A display device includes a scan driver to supply scan signals to first and second scan lines, a data driver to supply a data signal to data lines, a sensor connected to sensing lines, and pixels including a light-emitting element, a driving transistor to control an amount of current supplied to the light-emitting element in response to a voltage of a first node, a switching transistor between a j-th data line and the first node, and including a gate electrode coupled to an i-th first scan line, and a sensing transistor coupled between a second node, which is between the light-emitting element and the driving transistor, and a k-th sensing line, and including a gate electrode coupled to an i-th second scan line, and wherein the sensor is to sense deterioration information of the light-emitting element in a state in which the switching and sensing transistors are turned on.

Abstract: An apparatus for non-invasively estimating bio-information and a method of determining whether a bio-signal is normal by the apparatus for estimating bio-information are provided. The apparatus for estimating bio-information according to an embodiment of the disclosure includes: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from an object; and a processor configured to extract a plurality of pairs of local maximum points and local minimum points from a second derivative signal of the PPG signal, to select at least one reference pair from among the extracted plurality of pairs, and to determine whether the PPG signal is normal based on the selected at least one reference pair.

Abstract: Provided is a gate driving circuit comprising an N-th stage and an N+1-th stage. The N-th stage outputs an N-th scan gate signal based on an N-th scan clock signal, a voltage of a QN node, and a voltage of a QBN node and to output an N-th carry signal based on an N-th carry clock signal, the voltage of the QN node, and the voltage of the QBN node. The N+1-th stage outputs an N+1-th scan gate signal based on an N+1-th scan clock signal, a voltage of a QN+1 node, and the voltage of the QBN node and an N+1-th carry signal based on an N+1-th carry clock signal, the voltage of the QN+1 node, and the voltage of the QBN node. The N-th stage and the N+1-th stage share an inverting circuit. The inverting circuit controls the QBN node based on a third signal. N is a positive integer.

Abstract: The disclosure an air conditioning system and a method of controlling the same. During the heating operation of the A2W indoor unit, the A2A valve that connects the outdoor unit to the A2A indoor unit is closed to prevent the inflow of the refrigerant into the A2A indoor unit, so it is possible to prevent performance degradation by improving performance loss due to refrigerant bypass to a stationary A2A indoor unit. In addition, in order to improve the performance due to deterioration of heating performance, the system itself can cope with a control algorithm without any additional hardware configuration, thereby minimizing the installation cost.

Abstract: The disclosure an air conditioning system and a method of controlling the same. During the heating operation of the A2W indoor unit, the A2A valve that connects the outdoor unit to the A2A indoor unit is closed to prevent the inflow of the refrigerant into the A2A indoor unit, so it is possible to prevent performance degradation by improving performance loss due to refrigerant bypass to a stationary A2A indoor unit. In addition, in order to improve the performance due to deterioration of heating performance, the system itself can cope with a control algorithm without any additional hardware configuration, thereby minimizing the installation cost.

Abstract: An outdoor unit for an air conditioner is provided, which includes a case, a plurality of path portions separated from each other in the case and having a same discharge port, electronic units arranged on the plurality of path portions, and an air circulator arranged on the discharge port of the plurality of path portions to compulsorily circulate air in the case to an outside of the case through the plurality of path portions of the case.

Abstract: An outdoor unit for an air conditioner is provided, which includes a case, a plurality of path portions separated from each other in the case and having a same discharge port, electronic units arranged on the plurality of path portions, and an air circulator arranged on the discharge port of the plurality of path portions to compulsorily circulate air in the case to an outside of the case through the plurality of path portions of the case.

Abstract: A speaker design technology acquires a coaxial effect of an output sound by placing a high-frequency speaker for outputting a high-pitched sound apart from a low-frequency speaker for outputting a low-pitched sound by a predetermined distance and mechanically arranging output points of the high-frequency speaker and the low-frequency speaker in alignment with each other. The speaker design technology lets vibration of a low-frequency speaker to avoid interference by the high-frequency speaker and also lets the high-frequency speaker to avoid interference by the vibration of the low-frequency speaker by arranging the high-frequency speaker in front of a dust cap necessarily installed in the center of the low-frequency speaker. Since the high-frequency speaker and the low-frequency speaker are spaced apart from each other so as to independently operate, any interface is not required for enabling the high-frequency and the low-frequency speakers to interwork with each other.

Abstract: A speaker design technology acquires a coaxial effect of an output sound by placing a high-frequency speaker for outputting a high-pitched sound apart from a low-frequency speaker for outputting a low-pitched sound by a predetermined distance and mechanically arranging output points of the high-frequency speaker and the low-frequency speaker in alignment with each other. The speaker design technology lets vibration of a low-frequency speaker to avoid interference by the high-frequency speaker and also lets the high-frequency speaker to avoid interference by the vibration of the low-frequency speaker by arranging the high-frequency speaker in front of a dust cap necessarily installed in the center of the low-frequency speaker. Since the high-frequency speaker and the low-frequency speaker are spaced apart from each other so as to independently operate, any interface is not required for enabling the high-frequency and the low-frequency speakers to interwork with each other.

Abstract: The present invention relates to a digital contents generation and restoration technology. More particularly, the present invention relates to a method for generating and restoring digital contents, which prints numerical values constituting a digital contents file or a data image composed of various colors of dots mapped with data values of a digital contents file on a printable medium and restores the original contents file using the image including the numerical values printed on the printable medium or the various colors of dots.

Abstract: A harbor lighting control apparatus is provided, which includes a plurality of slaves to perform on control or off control, and dimming control with respect to a light emitting diode (LED) array light source mounted to a lighthouse when an on control signal or off control signal, and a dimming control signal are received, and to transmit a result of the control as acknowledge signals, and a master to transmit the on control signal or off control signal and the dimming control signal to all of the plurality of slaves by a broadcast scheme, to transmit the on control signal or off control signal and the dimming control signal to an individual slave by a unicast scheme, and to recognize operational states of the plurality of slaves by receiving the acknowledge signals from the plurality of slaves. Accordingly, stable and reliably control of the harbor lighting is enabled.

Abstract: Disclosed herein is an electronic shelf label system. The electronic shelf label system includes a plurality of electronic tags that are installed on a product display stand and confirms the residual amount of a battery to turn-on a battery warning light when the residual amount is smaller than a reference voltage and transmits replacement request signals to inform the replacement time of the battery; and a wired/wireless communication converter that relays information between the electronic tags and a server and transmits the replacement request signals received from the electronic tags to be relayed thereby to the server. The electronic shelf label system of the present invention can intuitively and easily confirm the timing when the battery of the electronic is replaced, thereby making it possible to improve the efficiency in the working of replacing the battery.

Abstract: A heat pump that uses solar heat as an evaporation heat source of a refrigerant. The heat pump includes a solar heat collector, a compressor to compress a refrigerant, a first heat exchanger to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, a second heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and heat collected by the solar heat collector, a third heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and external air, and a first flow channel switching valve to allow the refrigerant having passed through the first heat exchanger to selectively flow to the second heat exchanger or the third heat exchanger therethrough.

Abstract: An audio producing apparatus and an audio playing apparatus for an object-based audio service, and an audio producing method and an audio playing method using the same are provided. The producing apparatus and the audio playing apparatus supplies the object-based audio service, using audio object signals corresponding to a number of audio channels processable by the audio playing apparatus.

Abstract: A harbor lighting control apparatus is provided, which includes a plurality of slaves to perform on control or off control, and dimming control with respect to a light emitting diode (LED) array light source mounted to a lighthouse when an on control signal or off control signal, and a dimming control signal are received, and to transmit a result of the control as acknowledge signals, and a master to transmit the on control signal or off control signal and the dimming control signal to all of the plurality of slaves by a broadcast scheme, to transmit the on control signal or off control signal and the dimming control signal to an individual slave by a unicast scheme, and to recognize operational states of the plurality of slaves by receiving the acknowledge signals from the plurality of slaves. Accordingly, stable and reliably control of the harbor lighting is enabled.

Abstract: There are provided a communications system and a method for more efficiently communicating display information in transmitting large-capacity data, such as graphics data, between communication nodes, and an electronic shelf label system using the same. The communications system communicating display information includes a first communications device transmitting display information and a second communications device having a display unit displaying the display information.

Abstract: A multi-channel audio signal transmitting apparatus of the present invention includes an encoding unit configured to encode a predetermined audio signal and a controller configured to transmit the encoded audio signal to a predetermined device based on an HDAI (high definition audio interface) protocol.

Abstract: Disclosed herein are an electronic tag, an ESL system, a method for setting time information of the ESL system, and a method for operating the ESL system. The electronic tag includes: a communication interface unit transmitting and receiving data; a display unit displaying the information of the product; a power supply unit supplying power; a control unit controlling the communication interface unit, the display unit, and the power supply unit and processing data; and a memory unit storing data required to process data in the control unit, and the control unit possesses time information appropriated in real time.

Abstract: There is provided an electronic shelf label including an image display unit displaying a first image; a sensor unit detecting image switching signals; and a processor unit determining whether the image switching signals detected by the sensor unit are valid and switching the first image displayed on the image display unit to a second image when the image switching signals are valid, and a communication unit receiving a plurality of image data displayed on the image display unit. The processor unit determines that the image switching signals are valid when a detection duration time of the image switching signals is longer than a predetermined first threshold time. By this configuration, the electronic shelf label can switch a plurality of images and reduce the influence of disturbance to thereby prevent unnecessary image switching. Further, the electronic shelf label can provide product-related information for a manager or the like as well as for a purchaser.

Abstract: Disclosed herein is an electronic shelf label system. The electronic shelf label system includes a wired/wireless converter wirelessly transmitting product information according to request of a server, at least one rail installed on a product display stand and including a plurality of electrical wirings, at least one first electronic tag installed in the rail and performing wireless communication with the wired/wireless converter, and a plurality of second electronic tags each installed in the rail and performing wired communication with the first electronic tag through the electronic wirings. The electronic shelf label system uses the hybrid communication in which wire and wireless are mixed, thereby making it possible to provide the smooth communication environment by removing a shadow area of communication while dispersing communication traffic.