Abstract: A service identifying and processing method using a wireless terminal message according to an exemplary embodiment of the present invention includes (a) receiving a wireless terminal message by a first entity which is a mobile device; and (b) expressing, by a first agent which is an information processing application program installed on the first entity, entity information of second entity based on the wireless terminal message and service confirmation information related to service provided by the second entity, through an application screen by the first agent.

Abstract: There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve having a shaft rotatably inserted therein; a hub provided on an upper end of the shaft and having a main wall part protruding downwarly in an axial direction; and a stopper provided at an inner side of the main wall part to limit floatation of the hub and form an oil interface between an inner surface thereof in an inner radial direction and an outer surface of the sleeve, wherein the stopper has a lower porosity in a portion filled with oil than that of other portions thereof.

Abstract: Disclosed herein are an electromagnetic module for a spindle motor including a shaft and a spindle motor having the same. The electromagnetic module includes: an armature including a core and a coil wound around the core; and a magnet facing the armature, wherein the magnet is provided with a protrusion part disposed over the core. The spindle motor includes: a rotor part including a shaft, a hub, and a magnet; a stator part including a sleeve rotatably supporting the shaft, a base having the sleeve coupled thereto, and an armature facing the magnet, fixedly coupled to the base, and including a core and a coil; and a fluid dynamic bearing part formed between the rotor part and the stator part by being filled with oil, wherein the magnet is provided with a protrusion part disposed over the core.

Abstract: There is provided a rotor assembly for a motor and a motor including the same, the rotor assembly including: a hub including a magnet electromagnetically interacting with a coil to generate rotational driving force; and a disk mounting part included in the hub and having a disk mounted thereon, wherein contact surfaces of the disk and a contact part that contacts the disk are formed of the same material, have the same roughness, and are coupled to each other.

Abstract: There is provided a base assembly for a motor, the base assembly including: a base for a motor; and a pulling plate coupled to the base to prevent excessive floating of a rotating member of the motor, wherein the pulling plate includes a space part formed by extracting a predetermined region of the pulling plate so as to reduce noise generated during rotation of the rotating member.

Abstract: Disclosed herein is a scanner motor. The scanner motor includes a rotating shaft which is axially supported and rotatable, and a bearing which has the shape of a hollow cylinder. The bearing includes a hydrodynamic bearing portion provided on the upper portion of the bearing to rotatably support the rotating shaft, and an oil impregnated sintered bearing portion provided on the lower portion of the bearing.

Abstract: Disclosed herein is a scanner motor. The motor includes a base plate supporting the scanner motor, with a circuit board mounted on the base plate. A rotating shaft supports the scanner motor vertically in such a way that the scanner motor is rotatable. A bearing is rotatably fitted over the rotating shaft. A bearing holder holds the bearing. A stator is mounted to an outer circumference of the bearing holder to generate electricity. A rotor case is rotatably fitted over the rotating shaft so as to mount a polygon mirror. Three semicircular protrusions protrude from an upper portion of the rotor case at regular intervals to stably support the polygon minor. A concave part is formed between the protrusions to absorb external stress.

Abstract: A scanner motor is disclosed. In accordance with an embodiment of the present invention, the scanner motor includes a shaft, a housing having an insertion-hole formed in a center thereof, in which the shaft is inserted into the insertion-hole, a polygonal mirror, which is mounted on an upper side of the housing and has a through-hole formed in a center thereof in such a way that the shaft penetrates through the polygonal mirror, and a compression spring, which is formed on an upper side of the polygonal mirror and includes a V-shaped curved part bent downwardly in such a way that the V-shaped curved part compresses an upper edge of an inner circumferential surface of the polygonal mirror both horizontally and vertically.

Abstract: Disclosed herein is a scanner motor, including: a rotor case fixed on a rotation shaft to be rotated; a polygon mirror mounted on a top of the rotor case; and a bonding part formed between the rotor case and the polygon mirror to fix the polygon mirror on the rotor case.

Abstract: Disclosed herein is a scanner motor. The scanner motor includes a rotating shaft which rotatably supports the motor. A housing surrounds an outer circumference of the rotating shaft, is made by impregnating resin into a porous sintered metal material, and has a groove therein.

Abstract: Disclosed herein is a scanner motor. The scanner motor includes a rotating shaft which is axially supported and rotatable, and a bearing which has the shape of a hollow cylinder. The bearing includes a hydrodynamic bearing portion provided on the upper portion of the bearing to rotatably support the rotating shaft, and an oil impregnated sintered bearing portion provided on the lower portion of the bearing.

Abstract: There is provided a bearing assembly including: a sleeve having a hole; a shaft rotatably disposed in the hole; a thrust plate in contact with the end of the shaft to reduce friction in rotation of the shaft; and a holder accommodating the sleeve and the thrust plate and having a contact surface in contact with the thrust plate.

Abstract: A scanner motor is disclosed. In accordance with an embodiment of the present invention, the scanner motor includes a shaft, a housing having an insertion-hole formed in a center thereof, in which the shaft is inserted into the insertion-hole, a polygonal mirror, which is mounted on an upper side of the housing and has a through-hole formed in a center thereof in such a way that the shaft penetrates through the polygonal mirror, and a compression spring, which is formed on an upper side of the polygonal mirror and includes a V-shaped curved part bent downwardly in such a way that the V-shaped curved part compresses an upper edge of an inner circumferential surface of the polygonal mirror both horizontally and vertically.

Abstract: Disclosed herein is a scanner motor. The motor includes a base plate supporting the scanner motor, with a circuit board mounted on the base plate. A rotating shaft supports the scanner motor vertically in such a way that the scanner motor is rotatable. A bearing is rotatably fitted over the rotating shaft. A bearing holder holds the bearing. A stator is mounted to an outer circumference of the bearing holder to generate electricity. A rotor case is rotatably fitted over the rotating shaft so as to mount a polygon mirror. Three semicircular protrusions protrude from an upper portion of the rotor case at regular intervals to stably support the polygon minor. A concave part is formed between the protrusions to absorb external stress.

Abstract: Disclosed herein is a scanner motor. The scanner motor includes a rotor case for mounting a magnetic disc or polygon mirror thereon. A rotating shaft is rotatable and axially supports the rotor case. A hollow cylindrical bearing rotatably supports the rotating shaft. A bearing holder is mounted to the outer circumference of the bearing to support it. A stator is mounted to the outer circumference of the bearing holder to form an electric field which rotates the rotor case. A housing shaft is fitted over the outer circumference of the rotating shaft, seated on the rotor case, and coupled at its outer circumference to the polygon mirror. A hole is formed in the housing shaft, absorbs stress occurring during welding, and reduces variation in levelness of the polygon mirror. A coupling part couples the edge of the hole with the polygon mirror.

Abstract: Disclosed herein is a deflection scanner for the laser projection system of a mobile terminal. The deflection scanner includes a rotating axis, a magnet, at least one pair of armatures, at least one detection sensor, and a circuit board. The rotating axis is configured to reciprocally rotate a reflecting mirror by a predetermined angle. The magnet is installed to be fastened to the rotating axis and is configured to form a predetermined magnetic field. The armatures are installed at the circumference of the magnet to be spaced apart from each other. The detection sensor configured to detect the rotational displacement of the rotating axis by detecting variation in a magnetic field of the magnet. The circuit board is installed such that the detection sensor and the armatures are electrically connected to each other, and is configured to electrically control the armatures using the output voltage of the detection sensor.

Abstract: An actuator is disclosed. The actuator, which includes a base; a shaft, of which one end is rotatably joined to the base; a case secured to the other end of the shaft; a magnet mounted on one side of the case; a coil secured to the base to face the magnet; a mirror joined to the case and positioned on a light path to reflect light; and a guide having a guide hole that is capable of controlling the rotation angle of the mirror, not only has a small volume to be applicable to a mobile terminal, but also allows easy control of the mirror.