Abstract: In a sound system that uses over-the-air (OTA), a blockchain platform server is configured to support performance of a virtual sound transaction in a virtual environment. An OTA server is configured to manage a virtual sound transmitted from the blockchain platform server. A vehicle communication control device is configured to perform wireless communication with the OTA server. The vehicle communication control device is configured to download the virtual sound from the OTA server, determine whether the virtual sound is similar to a predetermined specific sound, perform an OTA state test of the virtual sound when the virtual sound is not similar to the predetermined specific sound, and control a sound processing device to play the virtual sound when the virtual sound passes the OTA state test.

Abstract: A method for manufacturing a vehicle wheel includes: a casting process of manufacturing the wheel in a one-piece body having a forming end and a temporary flange protruding at inner and outer sides of the wheel, respectively, wherein the one-piece body further includes a resonance chamber forming groove; a primary shape machining process of forming a stepped part at an outer circumferential side of the resonance chamber forming groove; a flow forming process of bending the forming end to be seated on the stepped part; a friction stir welding process of integrally bonding a portion where the forming end and the stepped part are in close contact with each other; a fine machining process of removing the temporary flange; and a sound-absorbing hole machining process of forming a sound-absorbing hole for communicating between the resonance chamber and an interior space of a tire in the forming end.

Abstract: A multilayer ceramic electronic component includes a ceramic body comprising dielectric layers and first and second internal electrodes laminatedly disposed in a third direction with respective dielectric layers interposed therebetween, and first electrode and second external electrodes disposed on both surfaces of the ceramic body in the first direction and electrically connected to the first and second internal electrodes. When an absolute value of a horizontal angle in the second direction of the first internal electrode with respect to the first surface of the ceramic body is referred to a first angle of the internal electrode, a total sum of the first angles is less than 10°.

Abstract: A multilayer capacitor includes a capacitor body having an active region, upper and lower cover regions, and width margins on opposing sides of the active region. The width margin includes a first region on an internal side thereof adjacent the first and second internal electrodes and a second region on an external side between the first region and a respective external surface of the capacitor body, and he upper and lower cover regions each include a third region on an internal side thereof adjacent the internal electrodes and a fourth region on an external side between the third region and a respective external surface of the capacitor body. The active region, the second region, and the fourth region have a same dielectric constant A, and the first and third regions have a same dielectric constant B, and A and B are different from each other and satisfy 0.5?B/A.

Abstract: A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes having different sizes to each other, and having first and second surfaces of the first and second internal electrodes, opposing each other in a stacking direction, third and fourth surfaces connected to the first and second surfaces and opposing each other, and fifth and sixth surfaces connected to the first and second surfaces and connected to the third and fourth surfaces, and opposing each other; and first and second external electrodes.

Abstract: The present invention relates to electrode slurry coating apparatus and method, the present invention ultimately allowing the process efficiency to be increased and rate of errors to be reduced when double-layer structured active material layers are formed by temporally adjusting the height of first and second discharge outlets through which active material is discharged.

Abstract: Provided is a duct docking device for a ventilation seat of a vehicle. The duct docking device enables air to be easily blown to a seatback and a seat cushion with a passenger in a seat using only one blower by enabling a seatback duct mounted at the seatback and a seat cushion duct mounted at the seat cushion to be hermetically docked through a connector duct, etc. at an unfolded position of the seatback in which a passenger can sit, and by enabling the seatback duct mounted at the seatback and the seat cushion duct mounted at the seat cushion to be separated from each other at a folded position of the seatback in consideration of that there is no passenger in the seat.

Abstract: A video display apparatus including a display unit and a horizontal deflector to deflect a beam scanned onto the display unit based on a video signal including horizontal synchronization information. The video display apparatus may further include a signal generator to generate a pulse signal having a predetermined duty ratio based on the horizontal synchronization information of the video signal, a driver to transform a predetermined power source voltage into a driving current to drive the horizontal deflector in correspondence to the pulse signal and to output the driving current to the horizontal deflector, a memory to store duty ratio information of the pulse signal corresponding to the driving current for the horizontal deflector, and a controller to control the signal generator to generate the pulse signal having the duty ratio corresponding to the duty ratio information stored in the memory.

Abstract: A raster center control circuit for a CRT-type display device that automatically determines a correct horizontal center position of a raster, regardless of a horizontal sync frequency input from a video card. The raster center control circuit includes a horizontal deflection circuit, electrically connected to a horizontal deflection yoke, to supply the horizontal deflection yoke with a parabolic wave signal used to determine a horizontal center position of the raster. A memory device stores predetermined values for raster control according to horizontal sync signal frequencies. A microprocessor determines a frequency of a horizontal sync signal and generates a raster control signal by converting one of the predetermined values stored in the memory device into a raster control signal according to the predetermined frequency.

Abstract: An image adjusting circuit of a display monitor includes a microcomputer for storing an image adjusting data, converting it to a d-c level, and generating a PWM pulse; and an integrating circuit, receptive to the PWM pulse according to the image adjusting data generated from the microcomputer, for integrating the PWM pulse according to the period of a vertical retrace pulse, and applying an image adjusting pulse to a horizontal size regulating terminal, thereby compensates for the pin/barrel-shaped and trapezoid distortions on the display monitor by integrating the PWM pulse generated from the microcomputer to generate a waveform through one integrating circuit, and by adjusting the image by regulating the PWM pulse.

Abstract: A circuit fixedly limits the horizontal image size of a screen of a CRT display. The circuit for limiting the horizontal image size of the screen detects a voltage indicative of the horizontal image size of the screen with power provided to a horizontal output unit by a field effect transistor in a horizontal output power supply unit. A current mirror circuit coupled to the field effect transistors outputs current which flows into the drain of a field effect transistor when the field effect transistor is turned on. The outputted current is transformed into voltage and the voltage is fed back to the PWM control circuit to limit the horizontal image size of the screen.

Abstract: A display device having a switching mode power supply which operates in boosting mode, said switching mode power supply includes a pulse width modulation circuit for outputting a switching control signal; an initial driver for providing a predetermined current for driving pulse width modulation circuit initially; a switching device for switching according to the signal from said pulse width modulation circuit; a switching transformer for transporting a voltage to second winding coil according to the status of said switching device; a feedback portion for dividing the voltage output from said switching transformer, and for feeding back divided voltage to said pulse width modulation circuit; an output portion for providing a high voltage induced by said switching transformer; and an over voltage stabilizing circuit, located between said feedback portion and said output portion, for compensating for the change of output voltage at an initial driving and at a load change.

Abstract: A power supply with a power factor correction circuit for use in a display monitor controls a switching power circuit in response to a voltage induced at a secondary winding of a transformer provided in the power factor correction circuit. Further, upon receiving a power saving control signal generated from a microcomputer provided in the display monitor, the power supply operates in the stand-by mode, (i.e., the power saving mode), in which only the power saving mode power supply circuit operates to supply operational power to the microcomputer.