Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: Disclosed is a motor driving apparatus including: a motor; an inverter including a switching element for driving the motor; a controller for controlling the switching element; a resolver including an excitation winding and a detection winding; and a resolver chip applying an excitation signal to the excitation winding by inputting a periodic signal from the controller, and receiving a feedback signal from the detection winding, wherein the resolver chip determines the number of rotations of the motor based on a change in a pulse width of a detection signal resulting from a comparison between a voltage of the feedback signal and a preset voltage, and output a signal to the inverter for setting an inertial driving control mode according to the number of rotations of the motor in a failure state of the controller.

Abstract: A semiconductor device includes an on-die resistor circuit comprising an on-die resistor, a calibration circuit configured to perform a calibration operation on the on-die resistor, and a calibration control circuit configured to control the calibration operation of the calibration circuit. The calibration circuit includes a current generating circuit configured to supply a calibration current to the on-die resistor and a comparing circuit configured to compare the magnitude of a first input signal that is generated by the calibration current and the on-die resistor with a magnitude of a second input signal that is generated by the calibration current and an external resistor.

Abstract: A semiconductor device includes an on-die resistor circuit comprising an on-die resistor, a calibration circuit configured to perform a calibration operation on the on-die resistor, and a calibration control circuit configured to control the calibration operation of the calibration circuit. The calibration circuit includes a current generating circuit configured to supply a calibration current to the on-die resistor and a comparing circuit configured to compare the magnitude of a first input signal that is generated by the calibration current and the on-die resistor with a magnitude of a second input signal that is generated by the calibration current and an external resistor.

Abstract: An optical inspection apparatus includes a stage that supports a target substrate, the target substrate including a plurality of light emitting elements, a jig that applies an electrical signal to the target substrate, the jig including a regulation resistor, a microscope that generates magnified image data of the target substrate, a camera that captures the magnified image data to generate a color image of the target substrate, and an optical measurement unit that captures the magnified image data of the target substrate to generate a spectrum image and measure optical characteristics of the target substrate.

Abstract: The light emitting sheet excellent in light guiding performance according to an embodiment of the present disclosure may include: a base film; and a light guide pattern portion in which a pattern set on a surface of the base film is repeatedly formed, wherein the light guide pattern portion has a hexagonal shape.

Abstract: A cylindrical secondary battery and a manufacturing method of a secondary battery are provided. A manufacturing method of a cylindrical secondary battery includes: winding an electrode assembly to expose a first electrode uncoated portion and a second electrode uncoated portion to opposite ends in a longitudinal direction; bending at least some portions of the first electrode uncoated portion and the second electrode uncoated portion of the electrode assembly in a direction by pressing the first electrode uncoated portion and the second electrode uncoated portion; welding electrode collector plates to ends of the bent first and second electrode uncoated portions; and inserting and sealing the electrode assembly into a cylindrical case.

Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.

Abstract: A system and method of providing an advertisement through a streaming video is proposed. In the system of providing the advertisement through the streaming video, when advertisers registers advertisements on a streaming server, a streamer may select any one of the registered advertisements, and when the streamer activates an advertisement function, a real-time broadcast video of the streamer may be converted into an advertisement video of the advertisement selected by the streamer. A streamer selects any one of the advertisements registered by the advertisers, and provides advertising content to viewers by including an advertising content provision object, such as an advertising product information link, in a streaming video transmitted by the streamer. In an embodiment, the advertiser may perform advertiser and advertisement registration in an advertisement server, and may limit conditions, such as streamer's broadcast content to be advertised, the number of followers, and the number of viewers.

Abstract: A system and method of sponsoring streaming funding is proposed. The system of sponsoring the streaming funding includes a streamer terminal configured to activate a funding function, generate streaming content, and transmit the streaming content to a streaming server; a sponsor terminal configured to transmit a funding amount for sponsoring a streamer to a sponsorship server; and the sponsorship server configured to display, on a streamer's broadcast screen, a sponsorship widget including at least one of a funding target amount, a target time period, and a funding sponsorship amount, when the funding function is activated by the streamer terminal, update the funding sponsorship amount on the sponsorship widget whenever a sponsorship event occurs, and provide the funding sponsorship amount to the streamer when the funding sponsorship amount reaches the funding target amount within the target time period.

Abstract: A system and method of sponsoring a streamer through drawing a picture is proposed. The system and method may set and provide an amount of ink available to a sponsor according to a sponsorship amount and output a picture directly drawn by the sponsor using the ink and a picture drawing process on a broadcast streaming screen for a predetermined period of time, so as to sponsor the streamer. In addition, in the embodiment, a picture quest sponsorship service in which a quest function and a picture sponsorship function are combined is provided.

Abstract: Provided is a sponsorship server including: a transceiver; at least one processor; and at least one memory operably connected to the at least one processor, and storing instructions for enabling the at least one processor to perform operations.

Abstract: Disclosed is a test system for a dynamic positioning controller system of a ship, the dynamic positioning controller system generating a control signal containing final destination information of the ship based on a simulated sensor signal, the test system including: an actuator simulator receiving the control signal containing the final destination information of the ship and continuously generating a modeled control signal containing thrust information; a ship simulator receiving the modeled control signal and performing ship motion analysis; a sensor simulator measuring the simulated sensor signal at the ship simulator; and a data collection unit storing a test condition, wherein when the test system repeatedly performs simulation based on the test condition, the data collection unit stores test results and analyzes the stored test results to automatically generate a report, whereby the test system derives highly reliable test results based on the modeled control signal and the simulated sensor signal.

Abstract: The present invention provides a composition comprising a mud rich in various active ingredients such as natural minerals, wherein the composition has a sufficiently low viscosity so as to stably provide a sheet-type mud pack, and a mud pack comprising the same. The mud pack comprising the composition is excellent in sebum control ability and pore shrinking ability, and is very effective for improving skin smoothness.

Abstract: The composition according to one embodiment of the present invention includes red pepper extract; and at least one extract selected from the group consisting of cabbage extract, broccoli extract, radish extract, and cauliflower extract, and can give thermal sensation, treat damaged hair, and improve hair condition. Furthermore, it is possible to care hair easily in house by using the hair pack to which the composition is applied.

Abstract: The present invention relates to silica/zwitterionic polymer composite nanoparticles, a preparation method therefor, and a hydrogel moisturizing patch containing the same. The silica/zwitterionic polymer composite nanoparticles of the present invention reduces the evaporation velocity of water by displaying a strong binding force to water and exhibits water retention and skin barrier function reinforcement effects, and thus can be used as an artificial moisturizing factor for preparing a hydrogel moisturizing patch or various cosmetic formulations pursuing similar skin effects thereto.

Abstract: The present invention provides an apparatus for implementing a universal remote controller and method thereof, by which a multitude of electronic products can be controlled by one remote controller. In a system including an electronic product module storing each remote controller control information of at least one or more products to output the stored remote controller control information according to an external request signal and a remote controller module receiving remote controller control information from the electronic product module and controlling a specific product selected by a user using the received remote controller control information, the present invention receives the remote controller control information from the electronic product module to display a key arrangement plan of the product to be controlled by a user's selection based on the received control information and then outputs key information by selecting a key of the displayed key arrangement plan.

Abstract: An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. High resolution in detection of the reflected signal is provided by a time-frequency cross correlation function. The high-accuracy localization of faults in a wire/cable can be achieved by measurement of time delay offset obtained from the frequency offset of the reflected signal. The apparatus enables one to execute an automated diagnostic procedure of a wire/cable under test by control of peripheral devices.

Abstract: An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. High resolution in detection of the reflected signal is provided by a time-frequency cross correlation function. The high-accuracy localization of faults in a wire/cable can be achieved by measurement of time delay offset obtained from the frequency offset of the reflected signal. The apparatus enables one to execute an automated diagnostic procedure of a wire/cable under test by control of peripheral devices.

Abstract: An apparatus and method for performing a picture-in-picture (PIP) in a display device is disclosed. The apparatus includes a first video processor converting a first video signal into data representing a displayable main picture, a second video processor converting a second video signal into data representing a displayable sub-picture, and a microcomputer controlling the first video processor and the second video processor, so that at least one of the main picture data and the sub-picture data is partially outputted in accordance with a shape of the sub-picture.