Abstract: Provided is a display device including a display panel, an optical sensor, a timing controller, a scan driver, a data driver, and an image controller. The timing controller controls an image refresh rate of the display panel based on a refresh rate control signal. Thus, the display device provides improved visibility.

Abstract: The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.

Abstract: A method of reinforcement learning of a neural network device for generating a verification vector for verifying a circuit design comprising a circuit block includes inputting a test vector to the circuit block, generating one or more rewards based on a coverage corresponding to the test vector, the coverage being determined based on a state transition of the circuit block based on the test vector, and applying the one or more rewards to a reinforcement learning.

Abstract: The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.

Abstract: A lubricant pump device includes a lubricant cartridge having a tank in which a lubricant is accommodated, and a pump body which is coupled to the lubricant cartridge and receives the lubricant from the lubricant cartridge, wherein the pump body includes a suction path into which the lubricant accommodated in the tank is introduced, a discharge path through which the lubricant introduced from the suction path is supplied to a lubricant path, a temporary storage path disposed between the suction path and the discharge path, a pressure detector provided at one side of the discharge path and configured to measure an internal pressure of the discharge path, and a lubricant supply controller including a cylinder communicating with the temporary storage path and a piston accommodated in the cylinder and moved forward and backward in a longitudinal direction of the cylinder.

Abstract: A method of guiding a menu, including storing route information generated based on hierarchical relationships of menus according to a tree structure, and displaying menu items using an on screen display and displaying a location and a function of a menu a user would like to find through a simulated menu using route information.

Abstract: An automatic brightness adjusting method and apparatus for image signal processor (ISP) is provided. The image processing apparatus may include a histogram generating unit, a cumulative distribution function calculator, and a histogram equalization (HE) unit. The histogram generating unit may generate a histogram of brightness values of pixels in an input image. The cumulative distribution function calculator may generate a cumulative distribution function and an inverse cumulative distribution function, based on the generated histogram. The HE unit may generate a conversion function based on the cumulative distribution function and the inverse cumulative distribution function, and may apply HE to the input image based on the conversion function so as to generate an output image.

Abstract: Provided are a touch screen and a method for compensating sensing capacitance variations and offset variations thereof. The touch screen includes: a touch panel where a plurality of driving lines and a plurality of sensing lines intersect and are wired; a driving unit for activating the driving lines sequentially; an input unit for measuring a sensing capacitance formed in a sensing line corresponding to an activated driving line; a multiplexer for serializing and outputting the measured sensing capacitance; an analog-to-digital converter for sampling the sensing capacitance outputted from the multiplexer by reflecting an initial sensing capacitance as an offset and performing analog-to-digital conversion for the sampling result; and a host processor for determining a touch event in response to the analog-to-digital conversion result.

Abstract: Provided is a time-domain voltage comparator including a voltage-time converter. The voltage-time converter includes a conversion unit and an output unit. The conversion unit includes a first MOS transistor which shifts a voltage level of the first detection node according to an external first voltage signal, and a second MOS transistor which shifts a voltage level of the second detection node according to an external second voltage signal. The output unit generates first and second output signals in response to voltages of the first and second detection nodes. The output unit determines a shifted time of the first output signal according to a voltage level of the first detection node and determines a shifted time of the second output signal according to a voltage level of the second detection node.

Abstract: A capacitor is provided. The capacitor includes first and second electrode layers facing each other, a first conductive pattern disposed between the first and second electrode layers, the first conductive pattern forming a closed loop in plan view, a second conductive pattern disposed within an inner space surrounded by the closed loop of the first conductive pattern, the second conductive pattern being spaced from the first conductive pattern, and a first contact plug passing through the second conductive pattern to contact the first and second electrode layers.

Abstract: An automatic brightness adjusting method and apparatus for image signal processor (ISP) is provided. The image processing apparatus may include a histogram generating unit, a cumulative distribution function calculator, and a histogram equalization (HE) unit. The histogram generating unit may generate a histogram of brightness values of pixels in an input image. The cumulative distribution function calculator may generate a cumulative distribution function and an inverse cumulative distribution function, based on the generated histogram. The HE unit may generate a conversion function based on the cumulative distribution function and the inverse cumulative distribution function, and may apply HE to the input image based on the conversion function so as to generate an output image.

Abstract: Provided is a time-domain voltage comparator including a voltage-time converter. The voltage-time converter includes a conversion unit and an output unit. The conversion unit includes a first MOS transistor which shifts a voltage level of the first detection node according to an external first voltage signal, and a second MOS transistor which shifts a voltage level of the second detection node according to an external second voltage signal. The output unit generates first and second output signals in response to voltages of the first and second detection nodes. The output unit determines a shifted time of the first output signal according to a voltage level of the first detection node and determines a shifted time of the second output signal according to a voltage level of the second detection node.

Abstract: The invention relates to a displaying apparatus having a display unit on which an image corresponding to an image signal inputted is displayed, comprising: an image signal processing unit processing the image signal so that the image is displayed on the display unit; and a control unit controlling the image signal processing unit to output a predetermined image on a blank area where the image is not displayed when the blank area is displayed for a predetermined time and to change the predetermined image. Accordingly, an aspect of the present invention to provide a displaying apparatus capable of preventing an image sticking phenomenon by sensing a blank area, outputting a predetermined pattern on the blank area and changing the predetermined pattern periodically when the blank area is continued for a predetermined period of time.

Abstract: A method of guiding a menu, including storing route information generated based on hierarchical relationships of menus according to a tree structure, and displaying menu items using an on screen display and displaying a location and a function of a menu a user would like to find through a simulated menu using route information.

Abstract: A charge pumping circuit is provided to regulate the amount of charge to be pumped according to a driving voltage to reduce the loss of power and increase charge pumping efficiency. The charge pumping circuit includes: a driving voltage sensing unit sensing a driving voltage to generate one or more sensing signals for determining the amount of charge to be pumped; a multi-level clock generation unit generating a pair of clock signals each having an amplitude corresponding to a signal value of each of the one or more sensing signals; and a charge pumping unit charging the pair of clock signals to generate a charged voltage, adding the charged voltage to the driving voltage, and outputting the same.

Abstract: A method of guiding a menu, including storing route information generated based on hierarchical relationships of menus according to a tree structure, and displaying menu items using an on screen display and displaying a location and a function of a menu a user would like to find through a simulated menu using route information.

Abstract: Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage.

Abstract: Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage.

Abstract: An embodiment for low power-consumption RC oscillator is disclosed. A voltage transforming unit transforms a power supply voltage to an internal voltage. A current mirroring unit is coupled to the voltage transforming unit and receives the internal voltage to provide constant two current outputs with different phases. A current charging/discharging unit includes first and second nodes to receive the two constant current outputs of the current mirroring unit, wherein first and second capacitors are coupled to the first and second nodes, respectively. The first and second capacitors are charged by the two constant current outputs. A voltage sensing and outputting unit is coupled to the first and second nodes, senses voltage levels of the first and second nodes and outputs clock signals when one of the sensed voltage levels is greater than a logic threshold. A pulse generating unit generates pulse signals in response to the clock signals.

Abstract: Provided are a touch screen and a method for compensating sensing capacitance variations and offset variations thereof. The touch screen includes: a touch panel where a plurality of driving lines and a plurality of sensing lines intersect and are wired; a driving unit for activating the driving lines sequentially; an input unit for measuring a sensing capacitance formed in a sensing line corresponding to an activated driving line; a multiplexer for serializing and outputting the measured sensing capacitance; an analog-to-digital converter for sampling the sensing capacitance outputted from the multiplexer by reflecting an initial sensing capacitance as an offset and performing analog-to-digital conversion for the sampling result; and a host processor for determining a touch event in response to the analog-to-digital conversion result.