Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.

Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.

Abstract: Disclosed herein are a device and method for sensing a moving ball configured to analyze continuously acquired images of the moving ball and to calculate information about the spin of the moving ball based on the analysis result. It is possible to calculate the spin of the moving ball without providing a specific marker on the ball. In the case in which a logo or a brand mark is present on the ball, or in which dimples or cracks, which are feature portions in an image, are also present on the ball, it is possible to easily, rapidly, and accurately calculate the spin of the moving ball using the same.

Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.

Abstract: A display device according to the present disclosure comprises a substrate including a display area and a non-display area, pixel circuits each including at least one n-type transistor and at least one p-type transistor and arranged in the display area, and a gate driving circuit included in the non-display area and outputting a first scan signal for applying a data voltage to driving transistors of the pixel circuits for an initialization time and a second scan signal that represents a same logic voltage as the first scan signal for the initialization time and represents a logic voltage reverse to the first scan signal for a sampling time. A first scan signal generator and a second scan signal generator are integrated using nodes Q/QB of a logic circuit to reduce a bezel size.

Abstract: A suspension arm includes a ball stud including a spherical ball; a bearing in which the spherical ball is accommodated; a housing having an inner peripheral portion and an outer peripheral portion; an arm body coupled to the outer peripheral portion of the housing; and an insert molding part which is injected to a lower portion of the bearing and the outer peripheral portion of the housing to be coupled to the bearing, the housing, and the arm body. The housing includes a matching portion having a matching surface formed to protrude in a radially outward direction from an upper portion of the outer peripheral portion and to be brought into contact with a mold. By forming the matching portion, it is possible to reduce the volume of the housing and to reduce the weight of the suspension arm while providing the matching surface with the mold.

Abstract: A suspension arm includes a ball stud including a spherical ball; a bearing in which the ball is accommodated; a housing having an inner peripheral portion, an outer peripheral portion, and a lower end portion that connects a lower end of the inner peripheral portion and a lower end of the outer peripheral portion, and configured to accommodate the ball and the bearing in a state in which the ball and the bearing are spaced apart from the inner peripheral portion; an arm body coupled to a portion of the outer peripheral portion of the housing; and an insert molding part formed on an outer peripheral portion of the bearing, the inner peripheral portion of the housing, and the lower end portion of the housing to couple the bearing with the housing. A convex-concave portion is formed on the inner peripheral portion of the housing along a circumferential direction.

Abstract: Disclosed are a ball-pitching control method of a pitching machine in a baseball practice system that is capable of automatically compensating for inclination of the pitching machine, which may occur depending on the installation environment of the pitching machine, based on the result of sensing performed by a sensing device for sensing a pitched ball or a hit ball without using a separate sensor or measurement device and that is capable of automatically self-correcting the displacement of the pitching machine from the original position thereof or the corrected position thereof over time due to external impact applied to the pitching machine or a manager's inaccurate correction of the pitching machine by analyzing the results periodically sensed by a sensing device and the cumulative results of set ball pitching information of the pitching machine, and a baseball practice system using the same.

Abstract: Disclosed are a ball-pitching control method of a pitching machine in a baseball practice system that is capable of sensing a pitched ball or a hit ball using a sensing device without using a separate sensor or measurement device and correcting the settings of the pitching machine based on the result of sensing such that the pitching machine pitches a ball at an accurate speed, and that is capable of analyzing the results periodically sensed by a sensing device and the cumulative results of set ball pitching information of the pitching machine such that the pitching machine automatically performs self-correction, thereby solving a problem in which the set speed of the ball is not accurately realized due to deterioration of the pitching machine over time or due to a change in the weight or the state of the ball, and a baseball practice system using the same.

Abstract: Disclosed are a screen baseball system, in which a pitching machine installed behind a screen pitches a ball toward a batting area through a pitching hole formed in the screen and a user hits the ball in the batting area, configured such that the case in which a virtual pitcher in an image projected on the screen is a left-handed pitcher and the case in which the virtual pitcher is a right-handed pitcher are realized when a ball is pitched through a single pitching hole, whereby the user who hits the ball in the batting area is capable of experiencing the pitch from the left-handed pitcher and the pitch from the right-handed pitcher, and a method of realizing a left-handed pitcher and a right-handed pitcher using the same.

Abstract: An internal voltage generation circuit includes a counting operation control signal generation circuit and a drive control signal generation circuit. The counting operation control signal generation circuit compares a test internal voltage with a test reference voltage to generate a counting operation control signal in a test mode. The drive control signal generation circuit generates a drive adjustment signal whose logic level combination is adjusted according to the counting operation control signal in the test mode. In addition, the drive control signal generation circuit compares the test internal voltage with the test reference voltage in the test mode to generate a drive control signal for driving the test internal voltage.

Abstract: A screen baseball system includes: a screen portion arranged in front of a batter's box and having a pitching hole allowing a pitched ball to pass therethrough; a ball pitching device arranged behind the screen portion to pitch a ball toward the batter's box through the pitching hole; and a hole opening/closing device configured to operate to close the pitching hole when the ball pitching device does not pitch the ball and to open the pitching hole when the ball pitching device pitches the ball.

Abstract: An internal voltage generation circuit includes a counting operation control signal generation circuit and a drive control signal generation circuit. The counting operation control signal generation circuit compares a test internal voltage with a test reference voltage to generate a counting operation control signal in a test mode. The drive control signal generation circuit generates a drive adjustment signal whose logic level combination is adjusted according to the counting operation control signal in the test mode. In addition, the drive control signal generation circuit compares the test internal voltage with the test reference voltage in the test mode to generate a drive control signal for driving the test internal voltage.

Abstract: Disclosed are an image-sensing-based sensing device and sensing method that are capable of acquiring an image of the motion of a pitched ball or a hit ball and analyzing the acquired image in order to calculate an accurate and rapid motion model of the ball, which shows how the ball moves, in a baseball practice apparatus that allows a user to perform a baseball practice or to play a baseball game, whereby it is possible to very accurately and rapidly calculate various kinds of information necessary for conducting the baseball practice or the baseball game, such as motion parameters of the pitched ball or the hit ball, a baseball practice apparatus using the sensing device and the sensing method, and a method of controlling the baseball practice apparatus.

Abstract: Disclosed are an image-processing-type sensing device and sensing method that are capable of acquiring an image of the motion of a pitched ball or a hit ball and analyzing the acquired image in order to calculate an accurate and rapid motion model of the ball, which shows how the ball moves, in a baseball practice apparatus that allows a user to perform a baseball practice or to play a baseball game, whereby it is possible to very accurately and rapidly calculate various kinds of information necessary for conducting the baseball practice or the baseball game, such as motion parameters of the pitched ball or the hit ball, a baseball practice apparatus using the sensing device and the sensing method, and a method of controlling the baseball practice apparatus.

Abstract: A baseball practice apparatus includes: a ball pitching device configured to pitch a ball toward a batting area where a user bats; a detection sensor configure to sense whether the user is located in the batting area; and a control device configured to analyze sensing information of the detection sensor to determine whether the user has prepared for batting in the batting area and cause the ball pitching device to operate according to a preset process when it is determined that the user has prepared for batting.

Abstract: Disclosed are a ball-pitching control method of a pitching machine in a baseball practice system that is capable of automatically compensating for inclination of the pitching machine, which may occur depending on the installation environment of the pitching machine, based on the result of sensing performed by a sensing device for sensing a pitched ball or a hit ball without using a separate sensor or measurement device and that is capable of automatically self-correcting the displacement of the pitching machine from the original position thereof or the corrected position thereof over time due to external impact applied to the pitching machine or a manager's inaccurate correction of the pitching machine by analyzing the results periodically sensed by a sensing device and the cumulative results of set ball pitching information of the pitching machine, and a baseball practice system using the same.

Abstract: Disclosed are a ball-pitching control method of a pitching machine in a baseball practice system that is capable of sensing a pitched ball or a hit ball using a sensing device without using a separate sensor or measurement device and correcting the settings of the pitching machine based on the result of sensing such that the pitching machine pitches a ball at an accurate speed, and that is capable of analyzing the results periodically sensed by a sensing device and the cumulative results of set ball pitching information of the pitching machine such that the pitching machine automatically performs self-correction, thereby solving a problem in which the set speed of the ball is not accurately realized due to deterioration of the pitching machine over time or due to a change in the weight or the state of the ball, and a baseball practice system using the same.

Abstract: An internal voltage generation circuit includes a counting operation control signal generation circuit and a drive control signal generation circuit. The counting operation control signal generation circuit compares a test internal voltage with a test reference voltage to generate a counting operation control signal in a test mode. The drive control signal generation circuit generates a drive adjustment signal whose logic level combination is adjusted according to the counting operation control signal in the test mode. In addition, the drive control signal generation circuit compares the test internal voltage with the test reference voltage in the test mode to generate a drive control signal for driving the test internal voltage.

Abstract: Disclosed are a screen baseball system, in which a pitching machine installed behind a screen pitches a ball toward a batting area through a pitching hole formed in the screen and a user hits the ball in the batting area, configured such that the case in which a virtual pitcher in an image projected on the screen is a left-handed pitcher and the case in which the virtual pitcher is a right-handed pitcher are realized when a ball is pitched through a single pitching hole, whereby the user who hits the ball in the batting area is capable of experiencing the pitch from the left-handed pitcher and the pitch from the right-handed pitcher, and a method of realizing a left-handed pitcher and a right-handed pitcher using the same.