Abstract: A system and method of supplying continuous chemical to a processing area for use in manufacturing a semiconductor device are provided. First and second storage vessels store chemical. A sensor checks and senses whether conduits respectively connected with the first and second storage vessels are empty. A 3-way valve selectively connects the conduits respectively connected with the first and second storage vessels, with a conduit connected to the processing area, so that chemical of the first and second storage vessels can be selectively supplied to the process area. A controller controls the 3-way valve in response to outputs of the first and second sensors. A pump is installed on a conduit for connecting the 3-way valve to the processing area and provides a flow pressure to the chemical.

Abstract: Audio data decoded in an MPEG system to be stored in a storage unit is supplied to an audio output via a filtering processing. For performing the filtering processing, presentation time interval of respective audio data is changed to conform to a user's designated playback speed, and the decoded audio data stored in the storage unit by being synchronized with the changed presentation time interval is written on an input queue in the set unit. A TSM algorithm is performed in the frame unit with respect to the audio data of the input queue to decrease the quantity of the audio data when the designated playback speed is faster than a normal playback speed or to increase it when the designated playback speed is slower than the normal playback speed, in accordance with a value of the designated playback speed. The TSM audio data is transferred to a middle queue.

Abstract: A monitor apparatus including a monitor main body to display a picture, and a base supporting the monitor main body, the monitor apparatus including: a link provided between the monitor main body and the base; a monitor hinge interposed between the monitor main body and the link and rotatably supporting the monitor main body to the base; a base hinge having a base bracket interposed between the base and the link and rotatably supporting the link to the base; a protruding portion formed in one of the base bracket and the link; and a rotation restricting portion provided in the other one of the base bracket and the link, elastically contacting the protruding portion, and preventing the link from rotation so as to keep the monitor main body rotated in a position parallel with the base. With this configuration, a link of a monitor is prevented from being rotated due to the weight thereof and the link when the monitor is in parallel with a base.

Abstract: A multi-direction image viewing system includes a triangular or rectangular image case, and plural projectors symmetrically installed to the inner sides of the image case in three or four directions. Projecting light paths cross each other so that the size of the image case is reduced to 1/6.7 to ? of the size of the conventional image case. By reducing the weight of the image case through size reduction, the multi-direction image viewing system can serve as a mobile multi-direction image viewing system coupled with a trailer and transported by a small sized vehicle such as a motorcycle, as a wide viewing angle multi-direction image system attached to a wall and coupled with the safety fence of the bus terminal or the subway station, and as an image viewing system mounted to a ceiling or wall.

Abstract: The device relates to a wall roll-up screen of which the upper and the lower are attached with the upper short rod and the lower short rod, respectively, wherein the screen is constituted to be rolled up when not in use and to be unrolled when used, by the lower short rod; and the left and the right end of the upper short rod are mounted with steel structure of groove shaped ringscapable of coupling magnets and the left and the right end of the lower short rod are mounted with magnets to allow them to be coupled with the groove shaped rings of the left end and the right end of the upper short rod, upon rolling up the screen by the lower short rod and, if necessary, separating the magnets from the groove shape rings, thereby to obtain good portability and mobility of the screen, to prevent the screen from being twisted from side to side upon fixing the screen, and to improve aesthetic value of product.

Abstract: Disclosed are a spherical reflective screen for displaying an image and a method for manufacturing the screen. The screen has a spherical surface with a radius of curvature of a circle drawn centering around a point, and a focal length of the screen is the same as a projection length of a projector so that the projector is located at a focal point of the screen, thus allowing the image formed by means of light projected from the projector to be straightly reflected on the screen but ambient light to be diffused to the outside. A frictional surface and diffusing lines are simultaneously formed on an aluminum foil by rubbing the double-layered aluminum foils together in one direction, therefore, viewing angle and resolution of the screen are improved two times or more.

Abstract: A heat exchanger is provided that is capable of performing heat exchange more efficiently by using slits. The heat exchanger includes a refrigerant pipe for allowing a refrigerant to flow therethrough, at least one fin disposed such that the refrigerant pipe penetrates through the at least one fin for performing heat exchange with air passing by the at least one fin, at least one slit formed by partially cutting out the at least one fin, and at least one slit fin extending from the at least one fin adjacent to one side edge of the at least one slit for inducing turbulent flow in air flowing along a flow channel spaced a predetermined distance from the at least one fin. The width of the at least one slit is greater than or equal to ? of the diameter of the refrigerant pipe. Turbulent flow is induced in air flowing through the heat exchanger by one side edge of the slit disposed downstream of the flow direction of air. Consequently, heat exchange efficiency of the heat exchanger is improved.

Abstract: A clothes dryer and a method for controlling its operation are disclosed, in which the clothes dryer includes a second motor being separately driven from a drum or a circulation fan to control a cooling fan for cooling a condenser. As for the second motor, a variable speed motor is used and amount of heating of a heater of the clothes dryer is variable. In the method for controlling an operation of a clothes dryer, the cooling fan is operated when a predetermined period of time passes after the cooling fan being stopped during an initial operation, or the cooling fan is operated at a regular speed when a temperature of air circulating reaches a predetermined degree after the cooling fan being operated at a low speed during the initial operation of the clothes dryer. Also, the speed of the cooling fan is varied according to amount of heating of the heater.

Abstract: Provided are an optical fiber that prevents optical amplification bands from overlapping each other while enabling optical signal amplification by a rare-earth element and optical signal amplification by a nonlinear Raman effect to simultaneously occur by performing a pumping operation using a single-wavelength light source, and a hybrid optical amplifier using the same. The optical fiber includes: a clad; and a core configured to have a refractive index larger than that of the clad, the core including a first element doped to receive pumped light having a predetermined wavelength and optically amplify the received signal light into a first band using a rare-earth element, and a second element doped to optically amplify the received signal light using nonlinear Raman optical amplification into a second band.

Abstract: Disclosed are a system and method for supplying chemical during a semiconductor device fabrication process. The system includes a tank to store the chemical, a dispensing unit to hold the chemical, a refill line connected between the tank and the dispensing unit to supply the chemical from the tank to the chemical liquid dispensing unit, and a dispensing line connected between the chemical dispensing unit and a semiconductor substrate to supply the chemical from the chemical dispensing unit to the semiconductor substrate.

Abstract: An external high/low voltage compatible semiconductor memory device includes an internal voltage pad, an internal voltage generation circuit, and an internal voltage control signal generation circuit. The internal voltage pad connects a low external voltage with an internal voltage, and the internal voltage generation circuit generates an internal voltage in response to an internal voltage control signal and a high external voltage. The internal voltage control signal generation circuit generates an internal voltage control signal according to an high or low external voltage. Thus, a database of the semiconductor memory device can be managed without classifying the database into databases for the high voltage and databases for the low voltage because of the internal voltage control signal. In addition, the internal voltage level is stable because charges provided to the internal voltage are regulated according to a voltage level of the external voltage.

Abstract: An apparatus for measuring contamination of a semiconductor substrate includes a chuck for loading a substrate, a position detection means for recognizing a front surface of the loaded substrate to obtain position data of a portion of the substrate to be measured, a first driving part for moving the chuck in accordance with the position data to measure a rear portion of the substrate, and a surface measurement means disposed under the chuck for selectively measuring metal contamination of the substrate at the rear portion of the substrate. In operation, the substrate is loaded onto a chuck, position data of a portion of the substrate to be measured is obtained by recognizing patterns formed on the substrate, the substrate is then moved in accordance with the position data to measure a rear portion of the substrate, and metal contamination is selectively measured at the rear portion of the substrate.

Abstract: A swing motor having an opening formed asymmetrically inside a stator. The swing motor is formed with an asymmetrical opening, in particular in a semicircular shape inside the stator. The opening is provided with a plurality of salient poles wound with coils. Electric current alternately flows through the coils so that a rotor, installed in the stator in a state of being spaced apart from the stator, can reciprocally move. Since the height of the stator is reduced by forming the opening asymmetrically in comparison with the case of forming the opening symmetrically, it is advantageous for minimizing the size of the product in which the swing motor is installed.

Abstract: The object of this invention is to provide a non-calcined clay composite used as building materials capable of promoting humans' health and being desirably used irrespective of location, which is improved in terms of strength without calcining clay. Because the non-calcined clay composite is produced without calcining clay, the process of producing it is simplified and its productivity is improved. The non-calcined clay composite includes 50 to 90 wt % clay, 2 to 30 wt % lime, 4 to 48 wt % blast furnace slag, 0.04 to 0.9 wt % alkaline chemical, and water as a balance, and has high compression strength due to an ionic coagulation reaction, a pozzolan reaction, and a latent hydraulic reaction.

Abstract: Disclose herein is a method for supplying CD insurance clauses, which provides the CD-stores insurance clause, in which a corresponding insurance clause and an insurance clause previously made are stored in a CD, provided to an insured party at the time of making a contract. The method includes the steps of storing insurance clauses provided by insurance companies on an insurance database of a clause provision web server; storing related insurance company, each of kinds of insurance of each insurance company, each of main insurances of each insurance company and each of composite insurances of each insurance company, and enabling each insurance company to provide the related insurance clauses to an insured party; ad an insured party accessing the clause provision web server and searching the insurance database to read his insurance clauses.

Abstract: The present invention discloses an SAW sensor device using a slit acoustic wave and a method thereof. The SAW sensor device using the slit acoustic wave includes a piezoelectric medium having a thin membrane at its one portion, a medium at the other portion, and a narrow slit which the slit acoustic wave passes through at its inside, an input IDT formed at the outer portion in the narrow slit of the piezoelectric medium, for transducing an electric input signal into the slit acoustic wave, and an output IDT formed at the outer portion opposite to the input IDT, for receiving the propagated slit acoustic wave and transducing the wave into an electric signal, whereby an external pressure transmitted to the device is sensed.

Abstract: A monitor having a rotable connection terminal. A monitor body to display an image is coupled to a supporting base with an adjustable link which permits the monitor body to be positioned at various angles relative to the base. The connection terminal is operatively to the monitor body and adapted to receive a second cable which provides an operational signal for the monitor body. The connection terminal is rotatably coupled to one of the base and the monitor body to permit the second cable to be connected to the connection terminal from various angles relative to the base, whereby the position of the second cable may be conveniently located for operation of the monitor according to a mounting orientation of the monitor base, contributing to an aesthetically pleasing appearance of the monitor.

Abstract: Disclosed is a single crystal substrate and a cutting method thereof. A single crystal substrate includes a langasite substrate with a SAW propagation surface; and input and output IDTs having electrodes on the surface for launching and/or detecting surface acoustic waves, wherein a direction of surface wave propagation is parallel to an X?-axis, and the substrate further has an Z?-axis perpendicular to the surface and a Y?-axis parallel to the surface and perpendicular to the X?-axis, the langasite substrate having a crystal orientation defined by modified axes X, Y and Z, the relative orientation of axes X?, Y?and Z? being defined by Euler angles ?, ? and 104 , in which ? is in a range of 80°???25°, ? is in a range of 15°???30°, and ? is in a range of 55°???85°.

Abstract: A split gate memory device and fabricating method thereof, wherein gate insulating and polysilicon layers are sequentially formed on a substrate. The polysilicon layer is patterned and a capping insulating layer is formed on portions thereof. A pair of self-aligned control gates having identical bottom widths are formed with a tunnel insulating layer interposed between the control gates and sidewalls of the polysilicon layer pattern and capping insulating layer. The tunnel insulating layer, patterned polysilicon layer and gate insulating layer are selectively etched to expose a portion of the substrate thereby forming a pair of floating gates. Ions are implanted into the exposed substrate and portions of the substrate adjoining the control gates to form a common source region and a drain region, respectively. The capping insulating layer on the floating gate protects an acute section of the tunnel insulating layer from attack during the etching and ion implantation.