Abstract: The present invention relates to a wireless charger for a mobile communication terminal, which allows charging a plurality of batteries in a conveniently way without any terminal connection of the batteries to chargers for various mobile communication terminals such as a cellular phone and PDA and also allows intercepting electromagnetic waves while the charger is used, by means of Faraday's law. The wireless charger of the present invention includes a charger body having an electromagnetic wave intercepting means; a charging pad received in the charger body; and at least one battery that is to be charged by means of induced electromotive force generated by the charging pad, wherein the charger body includes a power supply means, a housing having a receiver for receiving the charging pad and connected to the power supply means, and a cover hinged to the housing.

Abstract: A system, method and apparatus for contact-less charging of battery operated devices is presented. There is a host charger with a power converter and resonant tank circuit and a portable device where the battery is located, with a battery charging control IC. The method obviates the need for a voltage controller in each of both the host and the portable stages, thus decreasing complexity and increasing efficiency. The charging of the battery in the portable device is controlled by a charging controller therein, which is in continual electric communication with the host, whose output power the control IC dynamically monitors and controls. Two embodiments for the charging circuitry in the portable device are presented. In one embodiment component count is minimized but battery charging is not optimized when the battery voltage is very low. In the other embodiment charging efficiency is maximized regardless of the output voltage of the battery, but additional components are utilized.

Abstract: An extrusion mold for molding a ceramic membrane having an one-end closed tube structure which is easily integrated and has a high gas separation efficiency, and a fabrication method of a ceramic membrane tube using the same, the extrusion mold comprised of an outer mold, an inner mold and an extrusion hole end cap, wherein the cap has a through hole at its center for controlling an extrusion molding density, and a passage is formed in each of the inner and outer molds for maintaining an inner pressure of an extruded tube to be the same as an outer pressure. The one-end closed ceramic membrane tube is fabricated by supplying a ceramic mixture into the extrusion mold in a state that the end of the extrusion hole of the extrusion mold is closed by the cap, removing the cap after filling the mixture in the end of the extrusion hole, and further supplying the mixture into the extrusion mold to obtain a tubular ceramic extrusion body with a particular length.

Abstract: Disclosed are a conductive membrane able to selectively separate carbon dioxide from a gas mixture containing carbon dioxide, a manufacturing method thereof, and a method of separating carbon dioxide using the membrane. The conductive membrane for carbon dioxide separation includes molten carbonate, acting as a carbonate-ion conductor, and oxide, acting as an electronic conductor, and has infinite selectivity for carbon dioxide at high temperatures of 500° C. or more.

Abstract: The present invention is related to a novel approach for quantitation of DNA based on the stoichiometric existence of phosphorus (P) in DNA.

Abstract: The present invention is related to a novel approach for quantitation of DNA based on the stoichiometric existence of phosphorus (P) in DNA.

Abstract: A method for forming a multi-level metal interconnection, comprising the step of forming a first metal interconnection over an underlying layer; forming an insulating layer having a selected thickness over the underlying layer including the first metal interconnection; etching the insulating layer to form a contact hole, thereby exposing the first metal interconnection; forming a metal plug in the contact hole to contact with the first metal interconnection; etching the insulating layer by a portion of the selected thickness; forming a pair of metal spacers in sidewalls of the metal plug over the insulating layer; and forming a second metal interconnection over the insulating layer to contact with the first metal interconnection through one of the metal spacers.

Abstract: A burst mode receiver using a multi-stage feedback reduces its pulse width distortion in output data and improves its sensitivity by exactly extracting a reference voltage used as a detection threshold based on a packet transmission for an optical multi-access network. The receiver comprises a differential preamplifier circuit for generating an output voltage after detecting a difference between a detected current input signal from photodetector and a reference input signal; current source for compensating an offset of the differential preamplifier circuit; multistage amplifier means for adjusting a voltage level of the reference signal to a half value of the output voltage of the differential preamplifier circuit; blocking transistor for responding to an output of the multistage amplifier means; capacitor for storing a peak amplitude of the detected current input signal; and buffer transistor for controlling a discharge rate of the capacitor.

Abstract: An apparatus for vertical squeeze casting, which alters conventional apparatuses for vertical squeeze casting using squeeze casting methods to manufacture highly-detailed cast products of high quality by locally pressing the molten metal injection filled into the metal mold cavity, by improving the molten metal supplying mechanism and cast product extraction method, so that local pressing of the cast product from all vertical and lateral directions is enabled, thereby enabling the production of cast products with many variations in thickness and complex structures.

Abstract: Disclosed herein is a washing machine which comprises a bubble generator operable to supply a predetermined amount of air bubbles into the washer tub in a batchwise manner at such a time interval as to allow said amount of air bubbles supplied in a preceding batch to be substantially collapsed before a next supply of said air bubbles commences.

Abstract: Disclosed herein is a washing machine which comprises a bubble generator operable to supply a predetermined amount of air bubbles into the washer tub in a batchwise manner at such a time interval as to allow said amount of air bubbles supplied in a preceding batch to be substantially collapsed before a next supply of said air bubbles commences.

Abstract: Disclosed herein is a washing machine which comprises a bubble generator operable to supply a predetermined amount of air bubbles into the washer tube in a batchwise manner at such a time interval as to allow said amount of air bubbles supplied in a preceding batch to be substantially collapsed before a next supply of said air bubbles commences.