Abstract: A golf ball according to the present invention comprises: a core having a diameter of 37-39 mm and a first density; a mantle which surrounds the core, includes amorphous alloy powder, and has a thickness of 0.8-1.2 mm and a second density; and a cover which surrounds the mantle and has a thickness of 1-1.4 mm and a third density.

Abstract: A display device having a touch sensor of the present disclosure includes a display panel including a plurality of touch electrodes, a touch sensing circuit configured to apply a touch driving signal to the touch electrodes and amplify charges flowing from the touch electrodes based on an amplifier reset signal so as to generate an amplifier output voltage, and an amplifier output control circuit configured to adjust at least one of a toggle timing of the amplifier reset signal and a voltage amplitude of the touch driving signal so as to differentially control a level of the amplifier output voltage depending on positions of the touch electrodes.

Abstract: Disclosed is a golf club and a method of manufacturing the same, whereby an Fe-based amorphous alloy layer is coated on a surface of a base part of a clubface provided on a side of a clubhead to maintain an amorphous structure after coating, thus ensuring that a repulsive force, durability, surface hardness, and the like of the clubface are improved. The golf club includes: a clubhead; and a shaft connected to the clubhead, wherein the clubhead includes a clubface provided on a side thereof, and the clubface includes: a base part; and a coating layer provided on a surface of the base part and including an Fe-based amorphous alloy.

Abstract: A voltage converter includes a conversion unit, a self driver and an output unit. The conversion unit includes at least one inductor and provides a boosting power based on an input voltage and a first driving signal. The self driver includes at least one inductor that forms a magnetic coupling with the at least one inductor of the conversion unit. The self driver generates a second driving signal that is synchronized with the first driving signal through the magnetic coupling. The output unit generates an output voltage based on the boosting power and the second driving signal. Switching loss and conduction loss may be reduced by replacing an output diode with an output transistor and voltage spike and electromagnetic interference may be reduced through zero voltage switching. The driving signal of the output transistor may be controlled efficiently by adjusting the inductance of the driving inductor.

Abstract: A backlight unit may include a wall and a plurality of light sources. The wall may have a side in a cross-sectional view of the backlight unit. The side may have a curved shape in the cross-sectional view of the backlight unit. The plurality light sources may include a first light source and a second light source. The second light source may be positioned farther away from a center portion of the wall than the first light source in the cross-sectional view of the backlight unit. A minimum distance between the second light source and the side may be greater than a minimum distance between the first light source and the side in the cross-sectional view of the backlight unit.

Abstract: A backlight unit may include a wall and a plurality of light sources. The wall may have a side in a cross-sectional view of the backlight unit. The side may have a curved shape in the cross-sectional view of the backlight unit. The plurality light sources may include a first light source and a second light source. The second light source may be positioned farther away from a center portion of the wall than the first light source in the cross-sectional view of the backlight unit. A minimum distance between the second light source and the side may be greater than a minimum distance between the first light source and the side in the cross-sectional view of the backlight unit.

Abstract: A voltage converter includes a conversion unit, a self driver and an output unit. The conversion unit includes at least one inductor and provides a boosting power based on an input voltage and a first driving signal. The self driver includes at least one inductor that forms a magnetic coupling with the at least one inductor of the conversion unit. The self driver generates a second driving signal that is synchronized with the first driving signal through the magnetic coupling. The output unit generates an output voltage based on the boosting power and the second driving signal. Switching loss and conduction loss may be reduced by replacing an output diode with an output transistor and voltage spike and electromagnetic interference may be reduced through zero voltage switching. The driving signal of the output transistor may be controlled efficiently by adjusting the inductance of the driving inductor.

Abstract: An apparatus and method for compressing and restoring a Short Message Service (SMS) are provided. The apparatus includes an input unit through characters are input by a user; a display unit displays the characters input by a user; a control unit which compares the characters input by the user with a stored sentence table of recommended sentences to determine whether there is at least one recommended sentence in the sentence table that corresponds to the input characters, and if it is determined that there is the at least one recommended sentence that corresponds to the input characters, controls the display unit to display the at least one recommended sentence; a converting unit which converts a recommended sentence selected by the user from among the at least one recommended sentence into a compression code; and a transmission unit which transmits an SMS message that includes the recommended sentence converted into the compression code.

Abstract: A light emitting diode (LED) driver is provided that includes a light emitting diode, a converter connected to the light emitting diode, wherein the converter receives an input voltage and converts the input voltage to a basic voltage for driving the light emitting diode, a current regulator connected to the light emitting diode, a first operational amplifier connected to the current regulator, an analog dimming voltage generating unit including a second operational amplifier, a first resistor, a second resistor, and a third resistor, wherein a first terminal of the first resistor, a first terminal of the second resistor, and a first terminal of the third resistor are connected to a non-inversion terminal of the second operational amplifier, and connected to the first operational amplifier, and a pulse-width-modulation dimming pulse generating unit connected to a second terminal of the third resistor.

Abstract: A light emitting diode (LED) driver is provided that includes a light emitting diode, a converter connected to the light emitting diode, wherein the converter receives an input voltage and converts the input voltage to a basic voltage for driving the light emitting diode, a current regulator connected to the light emitting diode, a first operational amplifier connected to the current regulator, an analog dimming voltage generating unit including a second operational amplifier, a first resistor, a second resistor, and a third resistor, wherein a first terminal of the first resistor, a first terminal of the second resistor, and a first terminal of the third resistor are connected to a non-inversion terminal of the second operational amplifier, and connected to the first operational amplifier, and a pulse-width-modulation dimming pulse generating unit connected to a second terminal of the third resistor.

Abstract: An apparatus and method for compressing and restoring a Short Message Service (SMS) are provided. The apparatus includes an input unit through characters are input by a user; a display unit displays the characters input by a user; a control unit which compares the characters input by the user with a stored sentence table of recommended sentences to determine whether there is at least one recommended sentence in the sentence table that corresponds to the input characters, and if it is determined that there is the at least one recommended sentence that corresponds to the input characters, controls the display unit to display the at least one recommended sentence; a converting unit which converts a recommended sentence selected by the user from among the at least one recommended sentence into a compression code; and a transmission unit which transmits an SMS message that includes the recommended sentence converted into the compression code.

Abstract: The present invention relates to a color cathode ray tube and more specifically to a color cathode ray tube in which electron beam landing errors caused by terrestrial magnetism are corrected such that color purity is improved. The color cathode ray tube in accordance with the present invention comprises a panel having a phosphor screen formed on an inner surface thereof; a funnel joined to the panel; an electron gun generating electron beams; a frame mounted to the panel; a shadow mask mounted to the frame; and an inner shield mounted to the frame, wherein ISH/OAH is in a range of 1.8 to 3.0 wherein OAH is a height of the panel and ISH is a height of the inner shield.

Abstract: The present invention relates to a color cathode ray tube and more specifically to a color cathode ray tube in which electron beam landing errors caused by terrestrial magnetism are corrected such that color purity is improved.

Abstract: A CRT comprising a front panel coated with a fluorescent layer on the inner surface thereof, a shadow mask, a mask frame separating the shadow mask at a distance from the front panel, a funnel extending outwardly from the front panel forming an envelope surrounded by the front panel and the funnel, and an inner shield inside such an envelope to shield against earth and other external magnetic fields. The mask frame and the inner shield are welded together at their ends.

Abstract: A color cathode ray tube for permitting electron beams emitted from an electron gun to pass through apertures of a shadow mask and collide onto phosphors coated on the inner surface of a panel to thereby reproduce image information includes a magnetic shielding body which, for decreasing an influence of a terrestrial magnetic field, is formed of a rectangularly-shaped magnetic material and has one ends supported by the shadow mask to be symmetrical along the horizontal and vertical axes of the tube, and a plurality of notches formed into the magnetic shielding body are classified by the horizontal and vertical axes to be distributed asymmetrical with respect to the horizontal or vertical axes within four quadrants partitioned by the horizontal and vertical axes. Thus, the quantity of the landing variation in a specific portion having the greater quantity of the landing variation is reduced during the change of an outer magnetic field or the direction shift of the cathode ray tube.