Abstract: A piezoelectric ultrasonic motor includes: a drive piezoelectric material wherein a plurality of piezoelectric elements, which are polarized by opposite polarities along a circumferential direction around a rotation shaft, are alternately arranged, and a vibration-control piezoelectric material wherein a plurality of piezoelectric elements, which are arranged along a circumferential direction around the rotation shaft and polarized by opposite polarities, are arranged to correspond to the plurality of piezoelectric elements of the drive piezoelectric material, wherein AC power and another AC power having a phase difference with respect to the AC power are respectively applied to the piezoelectric material and the vibration-control piezoelectric material, in a vibration damping area of the drive piezoelectric material.

Abstract: An optical device includes a lens assembly that performs a forward/backward movement in an optical axis direction. The optical device also includes at least one first driving device that generates a first driving force that causes the lens assembly to perform the forward/backward movement in the optical axis direction. The optical device further includes at least one second driving device that generates a second driving force in a direction that is opposite to the moving direction of the lens assembly. The second driving force may be formed to be equal to or smaller than the first driving force so that the reciprocating amplitude of the lens assembly may be reduced when the lens assembly reciprocates before and after the focusing position. The optical device as described above may be variously implemented according to embodiments.

Abstract: A piezoelectric ultrasonic motor includes: a drive piezoelectric material wherein a plurality of piezoelectric elements, which are polarized by opposite polarities along a circumferential direction around a rotation shaft, are alternately arranged, and a vibration-control piezoelectric material wherein a plurality of piezoelectric elements, which are arranged along a circumferential direction around the rotation shaft and polarized by opposite polarities, are arranged to correspond to the plurality of piezoelectric elements of the drive piezoelectric material, wherein AC power and another AC power having a phase difference with respect to the AC power are respectively applied to the piezoelectric material and the vibration-control piezoelectric material, in a vibration damping area of the drive piezoelectric material.

Abstract: An optical device includes a lens assembly that performs a forward/backward movement in an optical axis direction. The optical device also includes at least one first driving device that generates a first driving force that causes the lens assembly to perform the forward/backward movement in the optical axis direction. The optical device further includes at least one second driving device that generates a second driving force in a direction that is opposite to the moving direction of the lens assembly. The second driving force may be formed to be equal to or smaller than the first driving force so that the reciprocating amplitude of the lens assembly may be reduced when the lens assembly reciprocates before and after the focusing position. The optical device as described above may be variously implemented according to embodiments.

Abstract: An apparatus for transferring an optical element, the apparatus including: a support portion for supporting the optical element; a guide portion for guiding the support portion to move in a rectilinear direction; a brake disposed between a first position that contacts the support portion and restricts a movement of the support portion, and a second position that is spaced apart from the support portion and allows the movement of the support portion to change a position thereof; and a driving portion for driving the brake.

Abstract: A vibrating actuator assembly includes a diaphragm, at least one vibrator at the diaphragm and that vibrates when an electric signal is applied thereto, a vibration shaft having one end connected to the diaphragm, a rotor on an outer side of the vibration shaft to contact an outer surface of the vibration shaft and that moves by vibration of the vibration shaft, and an elastic presser at another end of the vibration shaft and that elastically presses the rotor toward the diaphragm.

Abstract: A method and an apparatus for controlling output of a calendar in an electronic device are provided. The method includes displaying an electronic calendar, detecting a gesture on the displayed electronic calendar, updating the displayed electronic calendar to a calendar which has a difference by a predetermined period according to a period of the displayed electronic calendar when the detected gesture corresponds to a predetermined gesture, and displaying the updated calendar, wherein the predetermined period corresponds to a period which is longer than that of the displayed electronic calendar.

Abstract: A mobile terminal and digital broadcast receiving method thereof are disclosed, by which complicated procedures for digital broadcast reception in a mobile communication terminal can be simplified for user's convenience. The method according to an embodiment includes recognizing a number inputted via an input unit of the terminal in a standby mode, deciding whether a broadcast channel mapped by the inputted number exists in a memory, reading broadcast information for the broadcast channel mapped by the inputted number from digital multimedia service data and then displaying the broadcast information on a prescribed area of a display unit, and if a control signal for a digital broadcast reception is inputted while the broadcast information for the broadcast channel is displayed, entering a digital broadcast receiving mode of the broadcast channel.

Abstract: A method and an apparatus for copy-and-paste of a GUI object are provided. The method includes sensing a multi-touch gesture event and copying at least one GUI object. The multi-touch gesture event includes either a multi-tap and hold gesture event or a multi-tap gesture event. An electronic device for copy and paste of a GUI object comprises a touch screen, at least one or more processors, a memory, and at least one or more modules, each of the one or more modules being stored in the memory and being configured to be executed by the one or more processors, wherein the at least one or more modules is configured to sense a multi-touch gesture event on the touch screen and to copy at least one GUI object.

Abstract: Provided is a piezoelectric motor including: a stator which includes first and second faces, wherein a plurality of piezoelectric elements are arranged on the first face, and a plurality of protrusions are formed on the second face; a rotor which is rotated by motions of waves of the stator generated by the piezoelectric elements; and a driver device which applies driving voltages to the piezoelectric elements, wherein polarization directions of the plurality of piezoelectric elements are vertical to a rotary face of the rotor.

Abstract: A piezoelectric motor including a base member; a stator disposed on the base member and comprising at least one piezoelectric element; a rotor configured to rotate by a wave motion of the stator, the wave motion being generated by the piezoelectric element; a cover member attached to the base member; a bearing arranged between the cover member and the rotor; and an elastic member configured to press the rotor toward the stator.

Abstract: A power transmitting mechanism assembly including a supporting plate; a first roller, which is rotatably attached to the supporting plate; a first plate, which contacts a first end of the first roller and is arranged to be able to rotate with respect to the supporting plate; a power generating unit, which generates power for rotating the first plate when a signal is applied; a second plate, which is arranged to contact a second end of the first roller; and a friction changing unit, which is attached to at least one of the first roller, the first plate, and the second plate and changes friction of a portion of a contacting surface between the first roller and the first plate or friction of a portion of a contacting surface between the first roller and the second plate.

Abstract: A power transmitting mechanism assembly including a supporting plate; a first roller, which is rotatably attached to the supporting plate; a first plate, which contacts a first end of the first roller and is arranged to be able to rotate with respect to the supporting plate; a power generating unit, which generates power for rotating the first plate when a signal is applied; a second plate, which is arranged to contact a second end of the first roller; and a friction changing unit, which is attached to at least one of the first roller, the first plate, and the second plate and changes friction of a portion of a contacting surface between the first roller and the first plate or friction of a portion of a contacting surface between the first roller and the second plate.

Abstract: An optical path adjusting device includes a supporting plate having a hole through which light travels, a two-dimensional (2D) aperture disposed in the supporting plate so as to adjust an open area of the hole, and a three-dimensional (3D) aperture having a plurality of first blinds and a plurality of second blinds. The plurality of first blinds are disposed to correspond to a first area of the hole so as to move to open or close the first area, and the plurality of second blinds are disposed to correspond to a second area of the hole so as to move to open or close the second area.

Abstract: A piezoelectric motor includes a piezoelectric element; a stator comprising a first surface and a second surface, wherein the piezoelectric element is disposed on the first surface and a plurality of projections are formed on the second surface; a rotor comprising an operating portion that contacts the plurality of projections and that rotates via waves of the stator generated by the piezoelectric element, wherein a part of each of the plurality of projections that contacts the operating portion comprises a curved contact portion.

Abstract: An apparatus for transferring an optical element, the apparatus including: a support portion for supporting the optical element; a guide portion for guiding the support portion to move in a rectilinear direction; a brake disposed between a first position that contacts the support portion and restricts a movement of the support portion, and a second position that is spaced apart from the support portion and allows the movement of the support portion to change a position thereof; and a driving portion for driving the brake.

Abstract: An optical path adjusting device includes a supporting plate having a hole through which light travels, a two-dimensional (2D) aperture disposed in the supporting plate so as to adjust an open area of the hole, and a three-dimensional (3D) aperture having a plurality of first blinds and a plurality of second blinds. The plurality of first blinds are disposed to correspond to a first area of the hole so as to move to open or close the first area, and the plurality of second blinds are disposed to correspond to a second area of the hole so as to move to open or close the second area.

Abstract: A vibrating actuator assembly includes a diaphragm, at least one vibrator at the diaphragm and that vibrates when an electric signal is applied thereto, a vibration shaft having one end connected to the diaphragm, a rotor on an outer side of the vibration shaft to contact an outer surface of the vibration shaft and that moves by vibration of the vibration shaft, and an elastic presser at another end of the vibration shaft and that elastically presses the rotor toward the diaphragm.

Abstract: A piezoelectric motor including a base member; a stator disposed on the base member and comprising at least one piezoelectric element; a rotor configured to rotate by a wave motion of the stator, the wave motion being generated by the piezoelectric element; a cover member attached to the base member; a bearing arranged between the cover member and the rotor; and an elastic member configured to press the rotor toward the stator.

Abstract: A piezoelectric motor includes a piezoelectric element; a stator comprising a first surface and a second surface, wherein the piezoelectric element is disposed on the first surface and a plurality of projections are formed on the second surface; a rotor comprising an operating portion that contacts the plurality of projections and that rotates via waves of the stator generated by the piezoelectric element, wherein a part of each of the plurality of projections that contacts the operating portion comprises a curved contact portion.