摘要:
Disclosed herein is a vibration actuator. The vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil. The vibration actuator comprises an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case. The elastic wire is connected between the case and the mass member for elastically supporting mass member. The present invention minimizes change of natural frequency due to manufacturing tolerance of raw materials to improve vibration characteristics of the vibration actuator, simplifies and reduces a manufacturing process to improve productivity of the vibration actuator, and improves durability to increase the service life of the vibration actuator.
摘要:
Disclosed herein is a PhotoDiode Integrated Circuit (PDIC) having multiple gain states. The PDIC includes a current-voltage conversion unit, an input amplification stage circuit, a reference resistance unit, a feedback resistance unit, and a switching unit. The current-voltage conversion unit converts a current signal into a voltage signal. The input amplification stage circuit is connected to the current-voltage conversion unit to receive and amplify the voltage signal. The reference resistance unit is connected to the second input terminal of the input amplification stage circuit. The output amplification stage circuit is connected to the output terminal of the input amplification stage circuit. The feedback resistance unit is connected in parallel between the second input terminal and the output terminal of the output amplification stage circuit, and is configured to have a plurality of resistance elements. The switching unit selectively connects the plurality of resistance elements.
摘要:
Disclosed herein is an coating composition for electromagnetic wave shielding, which can effectively solve the problems of electromagnetic interference (EMI) and radio frequency interference (RFI) caused by electromagnetic waves generated from the internal elements of various electronic devices. The composition contains a silver-coated copper particles having fine particle size, so that it can greatly improve the durability of an electroconductive film prepared therefrom. The coating composition comprises a polyurethane binder, a metal particles, a solvent and a rheology control agent, in which the metal particles is either a silver-coated copper particles having an average particle size of 2-20 μm or a mixture of the silver-coated particles and a silver particles having an average particle size of 2-10 μm, and the polyurethane binder is a mixture of at least two kinds of polyurethanes.
摘要:
The present invention relates to an anti-frost evaporator pipe of a drawer type refrigerator for preventing frost from being formed on a ceiling portion of a storage chamber of the refrigerator. It is an object of the present invention to provide an anti-frost evaporator pipe of a drawer type refrigerator, wherein by preventing frost from being formed on a ceiling surface of an inner case through a structural improvement in the evaporator pipe installed to the inner case, excessive cooling and spoilage of foods and food damage due to the conversion of frost into water can be prevented and a drawer container can be more smoothly opened or closed, and wherein more precise operating conditions can be set and temperature variation in the storage chamber cannot be produced by using a sensor installed to more accurately detect a status of the storage chamber. To achieve the aforementioned object of the present invention, there is provided an anti-frost evaporator pipe of a drawer type refrigerator including an inner case in which a storage chamber for accommodating a storage drawer container is defined and the storage drawer container is kept at a low temperature by means of the evaporator pipe for refrigerant circulation wrapped around the exterior of the inner case, the evaporator pipe comprising curved pipe portions positioned at both side surfaces of the inner case, and a straight pipe portion positioned at a top surface of the inner case and connected with the curved pipe portions.
摘要:
Provided are a system and method of facilitating broadband data transmission by easily and quickly processing a hand-off of a mobile terminal using a high-altitude aeronautical platform above base stations. The system includes a hand-off related information transmitting/receiving unit informed by one of a plurality of base stations in a mobile communications network of a hand-off probability of the mobile terminal positioned in a cell that the base station covers; a position determining unit informed by the hand-off related information transmitting/receiving unit of the hand-off probability and determining whether the mobile terminal is positioned in an overlapping area between the cell that the base station covers and a cell that another base station covers; and a multicasting unit multicasting Internet packet data in a backbone network to the base station and the another base station when the mobile terminal is in the overlapping area via the hand-off related information transmitting/receiving unit.
摘要:
Disclosed is a method for controlling a vaporizer in ion implantation equipment during indium implantation process. The method comprises the steps of: (a) injecting a solid indium trichloride in a vaporizer; (b) raising a vaporizer temperature up to a first temperature at which water is able to be vaporized; (c) conditioning the vaporizer temperature in a temperature range between the first temperature and a second temperature at which the solid indium trichloride is able to be hydrolyzed, until water contained in the solid indium chloride can be removed; and (d) raising the vaporizer temperature up to a third temperature at which the indium trichloride is able to be vaporized.
摘要:
Disclosed herein is a video decoding system of a mobile broadcasting receiver. The video decoding system of a mobile broadcasting receiver for decoding a compression-coded video signal includes: at least one buffer memory for performing video decoding; a plurality of coprocessors including a data processing unit partitioned into one or more hardware blocks, wherein the data processing unit performs actual video decoding via data input/output from/to the buffer memory; and a DMA (Direct Memory Access) coprocessor for performing a direct access operation to an external memory, wherein, the at least one buffer memory, the plurality of coprocessors and the DMA coprocessor take the form of hardware, and operations thereof are controlled via software in a processor.
摘要:
A refrigerator includes a body having a compartment therein and a door opening and closing the compartment; an electrical device movable with respect to the body along a first direction; a conductor electrically connecting the electrical device with the body; and a structure for accommodating a slack portion of the conductor generated when the electrical part moves along the first direction.
摘要:
An apparatus for protecting a mobile communication terminal having a built-in battery from an electric charging and method thereof are disclosed, by which the mobile communication terminal is protected against a problem generated from using a false battery. The present invention includes a power unit, an electric charging control unit controlling an electric charging of the power unit, a control unit deciding whether the built-in battery is a correct battery by recognizing a serial number of the built-in battery, the control unit outputting a control signal for controlling the electric charging of the power unit, and a switching circuit switching a supply of an electric charging power applied to the battery according to the control signal of the control unit.
摘要:
A method of manufacturing a semiconductor device includes defining a first voltage region, a second voltage region, and a third voltage region on a substrate. The first, second, and third voltage regions are configured to handle first, second, and third voltage levels, respectively, that are different from each other. A nitride layer overlying the first, second, and third voltage regions are formed. An oxide layer overlying the nitride layer is formed. The oxide layer is patterned to expose a portion of the nitride layer overlying the first voltage region. The exposed portion of the nitride layer is removed using a wet etch process. A first gate oxide layer overlying the first voltage region is formed. Portions of the oxide layer and the nitride layer overlying the second and third voltage regions are removed. Impurities are selectively implanted into the third voltage region while preventing the impurities from being provided in the second voltage region. A second gate oxide overlying the second voltage region and a third gate oxide overlying the third voltage region are formed simultaneously. The second gate oxide is thicker than the third gate oxide.