Abstract: A linear motor and a camera module having the linear motor are provided. The linear motor includes: a piezoelectric substrate generating a vibration mode in a longitudinal direction on the basis of an applied voltage; first and second shafts coupled to both sides of the piezoelectric substrate with the piezoelectric substrate interposed therebetween; and a moving member coupled to at least one of the first and second shafts to be movable in the longitudinal direction of the first and second shafts and connected to a camera lens on one side. Accordingly, it is possible to remove a dead zone with a simple structure, to prevent an unnecessary increase in thickness, not to cause a stoppage at the time of moving a camera lens, to cause a small amount of tilt to enable a linear control, and to contribute to a decrease in thickness and a compactness of a mobile terminal.

Abstract: Disclosed are a fast handover system and a method thereof. The fast handover method can include: allowing a mobile node (MN) to transmit a handover information message to a previous mobile access gateway (PMAG); allowing the PMAG to transmit a fast proxy binding update (FPBU) message to a local mobility anchor (LMA) on the basis of the handover information message received from the MN; allowing the LMA to transmit a handover initiation (HI) message including MN-ID and proxy-care-of address (CoA) of the PMAG to a new MAG (NMAG); transmitting a position update message to the NMAG if the MN is attached to a target BS that is connected to the NMAG; and allowing the NMAG to deliver a buffered packet to the MN.

Abstract: Fast encoding method and system are provided which can transmit video data in real time using adaptive intra prediction in accordance with the H.264/AVC (Advanced Video Codec) standard so as to efficiently provide security-related images or multimedia images in various network environments with high quality. An intra prediction method of compressing and encoding an image includes the steps of: comparing an SAD value C calculated from macro block data of a present frame and a previous frame with a reference value K to determine a prediction method; and selectively performing on input macro block data a first method of determining a best mode and a block size by prediction in a plurality of prediction modes based on spatial directivity and generating prediction data and a second method of generating prediction data using the best mode and the block size used in the previous frame, depending on the determined prediction method.

Abstract: Disclosed is a method of manufacturing a continuous disk winding. A high-temperature superconducting wire is lapped using Kapton films to insulate the high-temperature superconducting wire. The high-temperature superconducting wire is wound on a bobbin by a predetermined number of turns to form a layer of windings. An annular disk having a slit formed therein is fitted onto the bobbin. The slit is formed along the circumference of the disk and to be inclined from the inner side of the disk towards the outer side thereof. The high-temperature superconducting wire is inserted into the slit of the disk to pass through the annular disk smoothly along the inclined slit and wound again by the predetermined number of turns to form a next layer of windings. The above steps of fitting an annular disk, and inserting and winding the high-temperature superconducting wire are repeated to form multiple layers of windings.