Abstract: A universal power supply apparatus may include a power converting unit converting input power into a plurality of voltages having preset levels, a path providing unit providing transfer paths for the plurality of voltages having preset levels from the power converting unit and having a common capacitor connected to an output terminal of the transfer paths, a voltage selecting circuit unit selecting at least one output of the transfer paths corresponding to each of the plurality of voltages having preset levels, and a voltage controlling unit controlling a voltage of output power according to the selection of the voltage selecting circuit unit.

Abstract: The present invention relates, in general, to a digital capture device for learning which captures (or photographs) images of both/either side of an open book in real time and transmits the captured images of the book to an output unit that enlarges or reduces the captured images (characters, pictures, etc.) of the book and displays them, thus allowing a learner to view the images, or that recognizes the characters of the images and outputs the recognized characters in the from of audio speech, thus allowing the learner to listen to the audio speech. More particularly, the present invention relates to a digital capture device for learning which is configured to exactly capture the images of the book without distorting the images.

Abstract: A power supply system may include a target device and an adapter. The target device may include an adapter connection switch that receives adapter recognition information to form a connection with the adapter, a voltage detection unit that receives an output voltage from an adapter, and a voltage-change-requesting unit that outputs a voltage to request a voltage change based on information on the output voltage from the adapter. The adapter may include a device information recognition unit that receives the voltage to request a voltage change, and an output-voltage-changing unit that changes the output voltage based on the voltage to request a voltage change.

Abstract: Disclosed herein is an electric generating system using a solar cell which converts a voltage generated in the solar cell into an Alternating Current (AC) voltage, and applies the converted voltage to a power system. The electric generating system includes; a Direct Current (DC)/DC converter that converts the voltage generated in the solar cell into a DC voltage, and has a synchronous rectifier including a synchronous switch; and a controller that detects one of a phase and a voltage of the power system, and selectively connects the synchronous switch of the synchronous rectifier in accordance with one of the phase and voltage of the power system. Here, the electric generating system reduces a conduction loss, and increases overall efficiency of the electric generation system.

Abstract: There is provided a multilevel inverter capable of easily perform balancing of voltages by way of controlling switching of voltage dividing based on an offset between voltages divided by capacitors of a voltage dividing circuit. The multilevel inverter includes: a voltage dividing unit including a plurality of capacitors for dividing an input direct current (DC) voltage; an inverter unit switching the divided DC voltages to output a predetermined alternating current (AC) voltage; and a control unit providing a control signal for controlling switching of the inverter unit based on an offset between the voltages divided by the plurality of capacitors.

Abstract: An image display apparatus for receiving and processing a broadcast signal and a method for operating the same are disclosed. The method includes receiving a notification through a network interface or a tuner, generating a promotion card object including the notification by processing the received notification by a card object generator, and displaying the promotion card object on a display.

Abstract: The present invention provides a switching device and a method for preventing malfunction of the same. The switching device includes: a controller for outputting a plurality of digital control signals; a protecting unit connected to the controller for protecting all signals when the plurality of digital control signals outputted from the controller are simultaneously received at a state of ON; a gate driver connected to the protecting unit for generating a switch control signal by converting the control signal passed through the protecting unit; and a plurality of switches connected to the gate driver for individually performing ON•OFF operations according to each of the switching control signals.

Abstract: The present invention relates, in general, to a digital capture device for learning which captures (or photographs) images of both/either side of an open book in real time and transmits the captured images of the book to an output unit that enlarges or reduces the captured images (characters, pictures, etc.) of the book and displays them, thus allowing a learner to view the images, or that recognizes the characters of the images and outputs the recognized characters in the from of audio speech, thus allowing the learner to listen to the audio speech. More particularly, the present invention relates to a digital capture device for learning which is configured to exactly capture the images of the book without distorting the images.

Abstract: Disclosed herein is an electric generating system using a solar cell which converts a voltage generated in the solar cell into an Alternating Current (AC) voltage, and applies the converted voltage to a power system. The electric generating system includes; a Direct Current (DC)/DC converter that converts the voltage generated in the solar cell into a DC voltage, and has a synchronous rectifier including a synchronous switch; and a controller that detects one of a phase and a voltage of the power system, and selectively connects the synchronous switch of the synchronous rectifier in accordance with one of the phase and voltage of the power system. Here, the electric generating system reduces a conduction loss, and increases overall efficiency of the electric generation system.

Abstract: A multi-layer polymer film for printing and copying of the present invention comprising a two-layer polymer base film composed of layer A and layer B laminated on one side of the layer A, the layer B containing a filler in an amount of 50 to 3000 ppm and the layer A containing no filler or a filler in an amount of at least 1000 ppm and less than the B layer; an image receiving layer coated on the exposed surface of the layer A; and an antistatic layer coated on the exposed surface of the layer B, wherein the layer A having the image receiving coating layer and the layer B having the antistatic coating layer have average degrees of surface roughness (Ra) ranging from 10 to 60 nm and 50 to 150 nm, respectively, exhibits improved properties in terms of runnability, printing, optical (haze), antistatic, friction coefficient and anti-blocking properties, which can be advantageously used as an OHP film.

Abstract: The present invention provides a switching device and a method for preventing malfunction of the same. The switching device includes: a controller for outputting a plurality of digital control signals; a protecting unit connected to the controller for protecting all signals when the plurality of digital control signals outputted from the controller are simultaneously received at a state of ON; a gate driver connected to the protecting unit for generating a switch control signal by converting the control signal passed through the protecting unit; and a plurality of switches connected to the gate driver for individually performing ON•OFF operations according to each of the switching control signals.

Abstract: Disclosed herein is a liquid composition for promoting plant growth containing titanium dioxide nanoparticles. The liquid composition contains, as an active ingredient, an aqueous solution prepared by adjusting the pH of colloidal titanium dioxide, a plant growth promoting component, to 0.4-0.6, in order to prevent rapid precipitation of the colloidal titanium dioxide, and then diluting the colloidal titanium dioxide with water to a predetermined concentration. The colloidal titanium dioxide, an environmentally friendly substance harmless to plants and the human body, which is contained in the plant growth promoting composition, is prevented from rapidly precipitating when it is diluted for application to plants. The plant growth promoting composition is harmless to organisms, reduces environmental contamination caused by over-application of biochemical fertilizers and is inexpensive, leading to an increase in farmer's income.

Abstract: A multi-layer polymer film for printing and copying of the present invention comprising a two-layer polymer base film composed of layer A and layer B laminated on one side of the layer A, the layer B containing a filler in an amount of 50 to 3000 ppm and the layer A containing no filler or a filler in an amount of at least 1000 ppm and less than the B layer; an image receiving layer coated on the exposed surface of the layer A; and an antistatic layer coated on the exposed surface of the layer B, wherein the layer A having the image receiving coating layer and the layer B having the antistatic coating layer have average degrees of surface roughness (Ra) ranging from 10 to 60 nm and 50 to 150 nm, respectively, exhibits improved properties in terms of runnability, printing, optical (haze), antistatic, friction coefficient and anti-blocking properties, which can be advantageously used as an OHP film.

Abstract: Disclosed herein is a liquid composition for promoting plant growth containing titanium dioxide nanoparticles. The liquid composition contains, as an active ingredient, an aqueous solution prepared by adjusting the pH of colloidal titanium dioxide, a plant growth promoting component, to 0.4-0.6, in order to prevent rapid precipitation of the colloidal titanium dioxide, and then diluting the colloidal titanium dioxide with water to a predetermined concentration. The colloidal titanium dioxide, an environmentally friendly substance harmless to plants and the human body, which is contained in the plant growth promoting composition, is prevented from rapidly precipitating when it is diluted for application to plants. The plant growth promoting composition is harmless to organisms, reduces environmental contamination caused by over-application of biochemical fertilizers and is inexpensive, leading to an increase in farmer's income.

Abstract: The present invention relates to an apparatus for manufacturing compacted irons of the reduced materials containing fine reduce irons and an apparatus for manufacturing molten irons provided with the same. The apparatus for manufacturing compacted irons according to the present invention includes a couple of rollers for compacting reduced materials containing fine reduced irons and manufacturing compacted irons, a guide chute for guiding compacted irons which are discharged from the couple of rollers; and crushers for crushing compacted irons which are guided into the guide chute. A guiding surface of the guide chute, which guides the compacted irons, includes a straight slanted surface and a curved slanted surface.

Abstract: The present invention relates to an apparatus for manufacturing compacted irons of the reduced materials containing fine reduce irons and an apparatus for manufacturing molten irons provided with the same. The apparatus for manufacturing compacted irons according to the present invention includes a couple of rollers for compacting reduced materials containing fine reduced irons and manufacturing compacted irons, a guide chute for guiding compacted irons which are discharged from the couple of rollers; and crushers for crushing compacted irons which are guided into the guide chute. A guiding surface of the guide chute, which guides the compacted irons, includes a straight slanted surface and a curved slanted surface.

Abstract: The present invention relates to a liquid composition for promoting plant growth, which contains titanium dioxide nanoparticles. The composition contains, as a main component, an aqueous solution containing titanium dioxide colloids. The titanium dioxide nanoparticles have such a particle size that they can be readily absorbed to plants. A pH of the aqueous solution is adjusted in order to prevent rapid precipitation of the titanium dioxide nanoparticles in the aqueous solution, before the aqueous solution is diluted with water such that titanium dioxide has a desired concentration. Also, the composition contains adjuvants necessary for plant growth and a surfactant for dispersion. The composition allows crop yield to be increased by increasing the photosynthetic efficiency of plants, and permits increasing the bactericidal activity of plants against plant pathogens.

Abstract: An air conditioner enables a user to input a desired monthly power cost for all electrical appliances, including the air conditioner. A microcomputer is able to calculate the accumulated power cost of operating the air conditioner for the month, as well as an expected power cost for operating all of the appliances. If the desired power cost for the month is below the expected power cost, the air conditioner is automatically operated in a power saving mode.

Abstract: An apparatus for controlling the discharge flow in an air conditioner, and a method therefor. The discharged air flow rate is adjusted in many ways, and at the same time, the air flow rate is increased or decreased in accordance with the air discharge direction so as to form a helical wind, thereby maintaining the room temperature at a constant level. An operation manipulating means inputs key signals to make the discharged air form a helical flow. A control means controls the blow direction of the blow direction vanes and the flow rate of the indoor fan to make the discharged air form a helical blow in accordance with the key signals. A blow direction adjusting means adjusts the blow direction of the discharged air by shifting the blow direction angle of the blow direction vanes under the control of the control means. A flow rate adjusting means adjusts the flow rate of the discharged air by varying the flow rate of the indoor fan under the control of the control means.