Abstract: A method of calculating an inserting force using 3D modeling, the method being performed by a numerical analysis apparatus is provided. The method includes receiving 3D modeling of a first model and a second model and receiving a first movement direction of the first model to couple the first model to the second model and searching for a contact surface between the first model and the second model while simulating the movement of the first model along the first movement direction and calculating an inserting force required in the process of coupling the first model and the second model by using the contact surface.

Abstract: A method of calculating an inserting force using 3D modeling, the method being performed by a numerical analysis apparatus is provided. The method includes receiving 3D modeling of a first model and a second model and receiving a first movement direction of the first model to couple the first model to the second model and searching for a contact surface between the first model and the second model while simulating the movement of the first model along the first movement direction and calculating an inserting force required in the process of coupling the first model and the second model by using the contact surface.

Abstract: A lamination apparatus for laminating a flexible member and an adhesive layer of a flexible display device includes a compressor including a first surface with a first curvature radius, a push rod connected to the compressor, the push rod having a circumferential surface with a smaller second curvature radius than the first curvature radius of the compressor; and an actuator connected to the push rod, actuator moving the push rod to apply a force for lamination.

Abstract: A lamination apparatus for laminating a flexible member and an adhesive layer of a flexible display device includes a compressor including a first surface with a first curvature radius, a push rod connected to the compressor, the push rod having a circumferential surface with a smaller second curvature radius than the first curvature radius of the compressor; and an actuator connected to the push rod, actuator moving the push rod to apply a force for lamination.

Abstract: A rod-shaped FRP bar is manufactured with a fiber and a resin by using a nozzle 100 which includes an outer nozzle 11 having a penetration hole at its center and a plurality of middle nozzles 12 disposed at an inlet of the outer nozzle 11 so that one middle nozzle is located inside another middle nozzle with an interval. Fibers are supplied through a center hole of the middle nozzle located at an innermost location, through intervals between the middle nozzles and through intervals between the middle nozzles and the outer nozzle, thereby making a hybrid FRP bar 1 having a section in which the fibers configure a plurality of fiber distribution layers from the center of the FRP bar toward the outside.

Abstract: A rod-shaped FRP bar is manufactured with a fiber and a resin by using a nozzle 100 which includes an outer nozzle 11 having a penetration hole at its center and a plurality of middle nozzles 12 disposed at an inlet of the outer nozzle 11 so that one middle nozzle is located inside another middle nozzle with an interval. Fibers are supplied through a center hole of the middle nozzle located at an innermost location, through intervals between the middle nozzles and through intervals between the middle nozzles and the outer nozzle, thereby making a hybrid FRP bar 1 having a section in which the fibers configure a plurality of fiber distribution layers from the center of the FRP bar toward the outside.

Abstract: A circuit apparatus and a method for detecting an earphone in a portable terminal are provided. The apparatus includes an earjack, a first switch, a second switch, a comparator, and a main chip. The earjack outputs a signal informing whether an earphone is inserted, provides a signal input from a third pole of the inserted earphone to the first switch, and provides a signal input from a fourth pole to the second switch. The first switch outputs a signal provided from the earjack to one of a comparator and a ground depending on an input control signal. The second switch outputs a signal provided from the earjack to one of the comparator and the ground depending on the input control signal. The comparator compares a voltage of a signal provided from one of the first switch and the second switch with a reference voltage to output a signal representing a comparison result.

Abstract: A circuit apparatus and a method for detecting an earphone in a portable terminal are provided. The apparatus includes an earjack, a first switch, a second switch, a comparator, and a main chip. The earjack outputs a signal informing whether an earphone is inserted, provides a signal input from a third pole of the inserted earphone to the first switch, and provides a signal input from a fourth pole to the second switch. The first switch outputs a signal provided from the earjack to one of a comparator and a ground depending on an input control signal. The second switch outputs a signal provided from the earjack to one of the comparator and the ground depending on the input control signal. The comparator compares a voltage of a signal provided from one of the first switch and the second switch with a reference voltage to output a signal representing a comparison result.

Abstract: A method of reducing a number of computations in an equalization process includes performing a pre-equalization operation on selected first frames from a plurality of frames, and estimating pre-equalization values of second frames based on the pre-equalization values of selected first frames, the second frames being frames which are not selected from the plurality of frames.