Abstract: Disclosed is a motor driving apparatus including: a motor; an inverter including a switching element for driving the motor; a controller for controlling the switching element; a resolver including an excitation winding and a detection winding; and a resolver chip applying an excitation signal to the excitation winding by inputting a periodic signal from the controller, and receiving a feedback signal from the detection winding, wherein the resolver chip determines the number of rotations of the motor based on a change in a pulse width of a detection signal resulting from a comparison between a voltage of the feedback signal and a preset voltage, and output a signal to the inverter for setting an inertial driving control mode according to the number of rotations of the motor in a failure state of the controller.

Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.

Abstract: A cradle includes a cradle body having a push button and a pair of holding arms facing each other in a compressed state by first elastic members in the cradle body, receding from each other while the push button is being pressed, and advancing toward each other while applying pressure to the holding arms to hold a portable body mounted on the cradle body. A driver is disposed in the cradle body and in interaction with the pair of holding arms.

Abstract: Provided is a cradling apparatus for a portable communication device to allow the portable communication device to slide and be inclinedly cradled through pressurization. To this end, a cradling apparatus for a portable communication device includes a first housing, a second housing, and link portions provided between the first housing and the second housing to slide and inclinedly cradle the second housing. The apparatus further includes guide portions coupled to both sides of the first housing, guide members slidably coupled with the guide portions, hinge portions protruding from the guide members, the hinge portions being rotatably coupled with the second housing, and pressurizing portions provided on one ends of the hinge portions to pressurize the hinge portions and the guide members.

Abstract: A cradle is provided. The cradle includes a cradle body having a push button, a pair of holding arms facing each other in a compressed state by first elastic members in the cradle body, receding from each other while the push button is being pressed, and advancing toward each other while applying pressure to the holding arms to hold a portable body mounted on the cradle body, and a driver disposed in the cradle body and in interaction with the pair of holding arms.

Abstract: A portable terminal including a pair of housings and a hinge apparatus for coupling the housings in such a way that the housings pivot with respect to each other is provided. The hinge apparatus includes a hinge bracket fixed to a first housing of the pair of housings, a pivot member connected to a second housing of the pair of housings and pivotably coupled to the hinge bracket to pivot with respect to a hinge axis, a cam surface provided on the pivot member around the hinge axis, the cam surface comprising at least a pair of recess portions, and a cam member received to protrude and retreat in perpendicular to the hinge axis on the hinge bracket. When the pivot member pivots, the cam member slides and contacts the cam surface and is engaged with one of the recess portions on the cam surface.

Abstract: Provided is a cradling apparatus for a portable communication device to allow the portable communication device to slide and be inclinedly cradled through pressurization. To this end, a cradling apparatus for a portable communication device includes a first housing, a second housing, and link portions provided between the first housing and the second housing to slide and inclinedly cradle the second housing. The apparatus further includes guide portions coupled to both sides of the first housing, guide members slidably coupled with the guide portions, hinge portions protruding from the guide members, the hinge portions being rotatably coupled with the second housing, and pressurizing portions provided on one ends of the hinge portions to pressurize the hinge portions and the guide members.

Abstract: A swing hinge device of a portable terminal that can move in a straight line or a curved direction when a folder rotates is provided. The portable terminal includes a body housing, a display unit, a folder rotating about first and second hinge axes on the body housing, and a connection member rotatively connecting the folder with the body housing. The swing hinge device includes a base member coupled to the connection member; a rotation member coupled to the folder; first and second guide pins; a first guide member coupled to the first guide pin, for guiding the straight movement of the first guide pin when the rotation member rotates about the second hinge axis; and a second guide member, coupled to the second guide pin, for guiding the curved movement of the second guide pin when the rotation member rotates about the second hinge axis.

Abstract: A portable terminal including a pair of housings and a hinge apparatus for coupling the housings in such a way that the housings pivot with respect to each other are provided. The hinge apparatus includes a hinge bracket fixed to a first housing of the pair of housings, a pivot member connected to a second housing of the pair of housings and pivotably coupled to the hinge bracket to pivot with respect to a hinge axis, a cam surface provided on the pivot member around the hinge axis, the cam surface comprising at least a pair of recess portions, and a cam member received to protrude and retreat in perpendicular to the hinge axis on the hinge bracket. When the pivot member pivots, the cam member slides and contacts the cam surface and is engaged with one of the recess portions on the cam surface, such that at least the housings are folded to each other or are kept stationary in a position where the housings are inclined with respect to each other at a predetermined angle.

Abstract: An extendable sliding module is disclosed, including a main body, a plurality of plates disposed at an upper part thereof and movable in a longitudinal direction thereof, a guide groove formed in at least one of opposite side surfaces of the main body and extending in the longitudinal direction thereof, and a hinge having one side slidably housed in the guide groove and the other side attached to the plurality of plates, and being extendable and retractable by a sliding movement between a first retracted state in which the plurality of plates are disposed to contact each other in the longitudinal direction of the main body and a second extended state in which the plurality of plates are disposed at a predetermined separation from each other.

Abstract: A swing hinge device of a portable terminal that can move in a straight line or a curved direction when a folder rotates is provided. The portable terminal includes a body housing, a display unit, a folder rotating about first and second hinge axes on the body housing, and a connection member rotatively connecting the folder with the body housing. The swing hinge device includes a base member coupled to the connection member; a rotation member coupled to the folder; first and second guide pins; a first guide member coupled to the first guide pin, for guiding the straight movement of the first guide pin when the rotation member rotates about the second hinge axis; and a second guide member, coupled to the second guide pin, for guiding the curved movement of the second guide pin when the rotation member rotates about the second hinge axis.