Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.

Abstract: A display device includes a display panel, a scan driver, and a timing controller. The display panel includes pixels connected to scan lines and initialization lines. The scan driver includes first stages configured to supply enable scan signals to the scan lines during an active period of one frame, and second stages configured to supply enable initialization signals to the initialization lines during the active period and a blank period of the one frame. The timing controller is configured to supply scan clock signals and initialization clock signals to the scan driver. When the enable initialization signals are supplied in an overlapping manner to two of the initialization lines during the active period of a current frame, the enable scan signals having different widths are supplied to respective areas of the display panel.

Abstract: A method of removing a metal substance in a petrochemical product including: supplying a petrochemical product stream to an incoming tank through a supply pipe, circulating the petrochemical product stream through an incoming tank circulation pipe, and removing a metal substance included in the petrochemical product stream using a magnetic filter; transporting the petrochemical product stream to an outgoing tank through an incoming tank discharge pipe which is branched from the incoming tank circulation pipe and connected to an outgoing tank; circulating the petrochemical product stream through an outgoing tank circulation pipe provided in the outgoing tank and removing the metal substance included in the petrochemical product stream using a magnetic filter; and transporting the petrochemical product stream to a branch pipe branched from the outgoing tank circulation pipe to remove the metal substance using an ion exchange resin filter.

Abstract: A method of detecting atrial fibrillation includes receiving a photoplethysmogram (PPG) signal from a first sensor of a wearable device, detecting a heart rate from the PPG signal based on a window power spectrum analysis of the PPG signal, and detecting atrial fibrillation based on the heart rate.

Abstract: Provided are an apparatus and a method for measuring a three dimensional shape with improved accuracy. The apparatus includes a stage, at least one lighting unit, a plurality of image pickup units and a control unit. The stage supports an object to be measured. The lighting unit includes a light source and a grid, and radiates grid-patterned light to the object to be measured. The image pickup units capture, in different directions, grid images reflected from the object to be measured. The control unit calculates a three dimensional shape of the object from the grid images captured by the image pickup units. The present invention has advantages in capturing grid images through a main image pickup portion and sub-image pickup portions, enabling the measurement of the three dimensional shape of the object in a rapid and accurate manner.

Abstract: A gate driver includes M active stages configured to generate first through M-th carry signals and first through M-th gate signals based on clock signals, where M is an integer greater than or equal to 4, and K back dummy stages configured to generate (M+1)-th through (M+K)-th carry signals based on the clock signals, where K is an integer greater than or equal to 3. An N-th active stage of the M active stages discharges a control node of the N-th active stage based on an (N+3)-th carry signal, where N is an integer greater than or equal to 1, and is less than or equal to M. At least one back dummy stage of the K back dummy stages discharges a control node of the at least one back dummy stage based on a corresponding clock signal of the clock signals.

Abstract: A display device includes a display panel that includes a plurality of pixels, a data driver configured to provide a data voltage to the plurality of pixels, a scan driver configured to provide a first scan signal and a second scan signal to the plurality of pixels, and a controller configured to control the data driver and the scan driver. The display panel is driven at a driving frequency that is variable within a driving frequency range. The scan driver provides the first scan signal to the plurality of pixels at the driving frequency, and provides the second scan signal to the plurality of pixels at a second driving frequency that is equal to or higher than the driving frequency.

Abstract: A display device includes a data driver providing a data voltage to each of multiple pixels, a scan driver providing first and second scan signals to each of the pixels, and a controller to control the data driver and the scan driver. The scan driver performs a first active scan operation that sequentially provides the first and second scan signals to the pixels in an active period of a first frame period, and initiates a dummy scan operation that sequentially provides the second scan signal to the pixels in a blank period of the first frame period. When a second frame period starts before the dummy scan operation for the pixel in a last row, the data driver changes a level of the data voltage in an overlap period in which the dummy scan operation and a second active scan operation in the second frame period are simultaneously performed.

Abstract: A scan driving circuit including scan stage circuits that each output a first carry signal and a scan signal, and sense stage circuits that each output a second carry signal and a sense signal. Each of the scan stage circuits receives the first carry signal from at least one preceding or subsequent scan stage circuit. Each of the sense stage circuits receives the second carry signal from at least one preceding or subsequent sense stage circuit. Each of the plurality of sense stage circuits receives the first carry signal from one of the at least one preceding or subsequent scan stage circuit.

Abstract: Provided herein may be a display device including: a display panel first scan lines, second scan lines, and pixels electrically connected to the first and second scan lines; a first scan driving circuit including a plurality of first shift registers each of which is configured to output a first scan signal to a corresponding first scan line and is configured to be reset by a first reset signal; a second scan driving circuit including a plurality of second shift registers each of which is configured to output a second scan signal to a corresponding second scan line and is configured to be reset by a second reset signal; and a timing controller configured to respectively output the first reset signal and the second reset signal through different signal lines. The display device may be improved in visibility so that images can be displayed at various refresh rates.

Abstract: A display device includes: a pixel connected to each of a first scan line, a second scan line, and a data line; a scan driver supplying a first scan signal to the first scan line and a second scan signal to the second scan line; a controller dividing one frame period into an active period and a blank period and generating a count signal in which a time duration of the blank period is counted and a power control signal; a data driver supplying a data signal to the data line; and a power supply controlling a source driving voltage supplied to the data driver according to a duration of the blank period based on the power control signal. When the count signal reaches a reference value, the controller supplies a start signal for output of the first scan signal to the scan driver.

Abstract: The present invention relates to novel benzylideneacetone derivatives or uses thereof, more specifically, the present invention relates to a pharmaceutical composition for preventing or treating, or food composition for ameliorating a cancer or a bone disease comprising a compound defined by Formula 1 or pharmaceutically acceptable salt thereof as an active ingredient.

Abstract: A display device includes: a pixel connected to each of a first scan line, a second scan line, and a data line; a scan driver supplying a first scan signal to the first scan line and a second scan signal to the second scan line; a controller dividing one frame period into an active period and a blank period and generating a count signal in which a time duration of the blank period is counted and a power control signal; a data driver supplying a data signal to the data line; and a power supply controlling a source driving voltage supplied to the data driver according to a duration of the blank period based on the power control signal. When the count signal reaches a reference value, the controller supplies a start signal for output of the first scan signal to the scan driver.

Abstract: A display device includes: a pixel connected to each of a first scan line, a second scan line, and a data line; a scan driver supplying a first scan signal to the first scan line and a second scan signal to the second scan line; a controller dividing one frame period into an active period and a blank period and generating a count signal in which a time duration of the blank period is counted and a power control signal; a data driver supplying a data signal to the data line; and a power supply controlling a source driving voltage supplied to the data driver according to a duration of the blank period based on the power control signal. When the count signal reaches a reference value, the controller supplies a start signal for output of the first scan signal to the scan driver.

Abstract: A display device includes: a pixel connected to each of a first scan line, a second scan line, and a data line; a scan driver supplying a first scan signal to the first scan line and a second scan signal to the second scan line; a controller dividing one frame period into an active period and a blank period and generating a count signal in which a time duration of the blank period is counted and a power control signal; a data driver supplying a data signal to the data line; and a power supply controlling a source driving voltage supplied to the data driver according to a duration of the blank period based on the power control signal. When the count signal reaches a reference value, the controller supplies a start signal for output of the first scan signal to the scan driver.

Abstract: A display device includes a display panel that includes a plurality of pixels, a data driver configured to provide a data voltage to the plurality of pixels, a scan driver configured to provide a first scan signal and a second scan signal to the plurality of pixels, and a controller configured to control the data driver and the scan driver. The display panel is driven at a driving frequency that is variable within a driving frequency range. The scan driver provides the first scan signal to the plurality of pixels at the driving frequency, and provides the second scan signal to the plurality of pixels at a second driving frequency that is equal to or higher than the driving frequency.

Abstract: In a method of operating a display device supporting a variable frame mode, frame data are received during a constant active period of a frame period including the active period and a variable blank period, the received frame data are written to a frame memory in the active period, the received frame data are outputted to a data driver in the active period to display an image based on the received frame data, a time of the variable blank period is counted, and, when the time of the variable blank period reaches a predetermined threshold blank time, the frame data stored in the frame memory are outputted to the data driver in the variable blank period to display an image based on the frame data stored in the frame memory.

Abstract: A display device includes a driving controller controlling a data driving circuit and providing a clock signal and a driving voltage in response to an image signal and a control signal received from an external source. The driving controller restores a data enable signal having a display period and a blank period in one frame on the basis of the control signal and sets a voltage level of the driving voltage applied to the gate driving circuit in accordance with a duration of the blank period. During a sequence of frames having a changing frame rate, the driving voltage for each respective frame may be set based on the duration of each respective blank period.

Abstract: The present invention relates to novel benzylideneacetone derivatives or uses thereof, more specifically, the present invention relates to a pharmaceutical composition for preventing or treating, or food composition for ameliorating a cancer or a bone disease comprising a compound defined by Formula 1 or pharmaceutically acceptable salt thereof as an active ingredient. Since compounds according to the present invention exhibit strong inhibitory activity on proliferation and differentiation of osteoclast, and activity on proliferation and differentiation of osteoblast, it can be usefully used to develop safe and effective anti-cancer agents, and therapeutic agents for preventing and treating or foods for ameliorating bone diseases including osteoporosis, and the like.

Abstract: A display panel driving apparatus includes a data driving part, a data driving part and an off voltage controlling part. The data driving part is configured to output a data signal to a data line of a display panel. The gate driving part is configured to output a gate signal to a gate line of the display panel. The off voltage controlling part is configured to receive a first off voltage and a second off voltage applied to the gate driving part to generate the gate signal, measure a leakage current of the gate driving part, and control the first off voltage based on the leakage current. Thus, display quality of a display apparatus including the gate driving part may be improved.