Abstract: The present invention relates to a process of preparing a highly pure tacrolimus, which comprising a pre-purification process carried out by means of crystallization, and particularly to a process of preparing a highly pure tacrolimus, which comprises a pre-purification process comprising the steps of (a) extracting mycelia cake collected by filtering a tacrolimus-containing oily compound with an organic solvent, (b) concentrating the extract under reduced pressure and (c) crystallizing the concentrate. In addition, a highly pure tacrolimus can be obtained by dissolving the pre-purified crystals in an organic solvent, passing through the solution in an adsorption resin and concentrating the eluate under reduced pressure, followed by crystallization. According to a process of the present invention, Tacrolimus as pure as appropriate for a pharmaceutical purpose can be prepared by a simple process and at a relatively low cost.

Abstract: A portable electronic device includes a case; a revolution body rotatable with respect to the case; an electric generator converting rotational kinetic energy of the revolution body into electrical energy; a gear assembly transferring rotational force of the revolution body to the electric generator, and including at least one gear; and a secondary cell storing the electrical energy generated by the electric generator.

Abstract: Provided is a hard handover method in a wireless communication system. The hard handover method includes checking a signal-to-noise ratio (SNR) of a signal received from each of at least one neighboring base station (BS) while in communication with a serving BS, and canceling interference if the SNR of the signal received from each of the at least one neighboring BSs satisfies a select condition; sending a handover request to the serving BS, if a difference between a SNR of the interference-canceled signal and a SNR of the interference signal reaches a handover request threshold; and upon receipt of a handover approval from the serving BS, releasing a communication channel to the serving BS, and connecting a call to a BS that provides an interference signal whose SNR has reached the threshold.

Abstract: An antenna structure of an information communication terminal, the antenna structure including: a frame having a three dimensional shape; an antenna pattern formed in the frame; and a circuit lumped element mounted on a surface of the antenna pattern. In the antenna structure, an antenna is directly provided on the frame such that a sufficient antenna characteristic can be ensured in a small space, thereby realizing a slim and miniaturized information communication terminal.

Abstract: A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range.

Abstract: A portable electronic device includes a case; a revolution body rotatable with respect to the case; an electric generator converting rotational kinetic energy of the revolution body into electrical energy; a gear assembly transferring rotational force of the revolution body to the electric generator, and including at least one gear; and a secondary cell storing the electrical energy generated by the electric generator.

Abstract: A camera lens assembly for a portable terminal. The camera lens assembly comprises a cylindrical housing having a receiving space extended in the longitudinal direction thereof, a camera holder inserted into or drawn out from the housing at one end of the housing, a bracket fixed to the end of the camera holder and linearly reciprocated in the housing, a guide plate linearly reciprocated on the bracket in the direction perpendicular to the longitudinal direction of the bracket and having a guide groove formed in the shape of a prescribed figure, a supporting cap attached to the other end of the housing and having a guide protrusion formed at the inner circumferential surface thereof and slidably moved along the guide groove for stopping the linear movement of the bracket at least once, and a spring supported by the supporting cap at one end thereof for applying an elastic force to the camera holder in the direction of drawing out the camera holder from the housing.

Abstract: A method for allocating resources in a wireless communication system using Frequency Division Multiple Access (FDMA). The method includes dividing entire frequency resources into sub-bands each having a number of sub-channels, setting at least one sub-channel in each of the sub-bands as a wide-band resource, and providing the sub-band and wide-band information to mobile stations; and determining one of the sub-band resource and the wide-band resource as an allocated resource according to channel condition with a particular mobile station when there is a need for communication with the mobile station.

Abstract: Provided is a hard handover method in a wireless communication system. The hard handover method includes checking a signal-to-noise ratio (SNR) of a signal received from each of at least one neighboring base station (BS) while in communication with a serving BS, and canceling interference if the SNR of the signal received from each of the at least one neighboring BSs satisfies a select condition; sending a handover request to the serving BS, if a difference between a SNR of the interference-canceled signal and a SNR of the interference signal reaches a handover request threshold; and upon receipt of a handover approval from the serving BS, releasing a communication channel to the serving BS, and connecting a call to a BS that provides an interference signal whose SNR has reached the threshold.

Abstract: A portable communication device includes a first housing extending in a first direction, a second housing extending in a second direction perpendicular to the first direction and formed at a bottom surface of the first housing so that a predetermined region of an outer circumferential surface of the second housing protrudes perpendicularly outward from the bottom surface of the first housing, and a camera lens module rotatably or linearly movably mounted in the second housing. The camera lens module is inserted into or drawn out from the second housing in the second direction. The camera lens module is repeatedly inserted into and drawn out from the second housing by pushing the camera lens module, and the camera lens module moves upward and downward when it is drawn out from the second housing.

Abstract: Disclosed herein is a portable communication device. The portable communication device includes a first housing extending in a first direction, a second housing extending in a second direction perpendicular to the first direction and formed at a bottom surface of the first housing so that a predetermined region of an outer circumferential surface of the second housing protrudes perpendicularly outward from the bottom surface of the first housing, and a camera lens module rotatably or linearly movably mounted in the second housing. The camera lens module is inserted into or drawn out from the second housing in the second direction. The camera lens module is repeatedly inserted into and drawn out from the second housing by pushing the camera lens module, and the camera lens module moves upward and downward when it is drawn out from the second housing.

Abstract: A camera lens assembly for a portable terminal. The camera lens assembly comprises a cylindrical housing having a receiving space extended in the longitudinal direction thereof, a camera holder inserted into or drawn out from the housing at one end of the housing, a bracket fixed to the end of the camera holder and linearly reciprocated in the housing, a guide plate linearly reciprocated on the bracket in the direction perpendicular to the longitudinal direction of the bracket and having a guide groove formed in the shape of a prescribed figure, a supporting cap attached to the other end of the housing and having a guide protrusion formed at the inner circumferential surface thereof and slidably moved along the guide groove for stopping the linear movement of the bracket at least once, and a spring supported by the supporting cap at one end thereof for applying an elastic force to the camera holder in the direction of drawing out the camera holder from the housing.