Abstract: A high-order harmonic wave generation apparatus using a diode-pumped solid state laser includes a pump head for generating a fundamental wave, Porro prisms disposed on the left and right sides of the pump head, nonlinear crystals for sequentially generating a second-order harmonic wave, a fourth-order harmonic wave, and a fifth-order harmonic wave from the fundamental wave, and a final emission unit for reflecting and transmitting any one of the second-order harmonic wave, the fourth-order harmonic wave, and the fifth-order harmonic wave and for emitting the harmonic wave without changing the optical path. Accordingly, the apparatus is insensitive to changes in the external environment through a resonator having a structure comprising Porro prisms, and enables the final emission unit to selectively output the fourth-order harmonic wave or the fifth-order harmonic wave.

Abstract: A high-order harmonic wave generation apparatus using a diode-pumped solid state laser includes a pump head for generating a fundamental wave, Porro prisms disposed on the left and right sides of the pump head, nonlinear crystals for sequentially generating a second-order harmonic wave, a fourth-order harmonic wave, and a fifth-order harmonic wave from the fundamental wave, and a final emission unit for reflecting and transmitting any one of the second-order harmonic wave, the fourth-order harmonic wave, and the fifth-order harmonic wave and for emitting the harmonic wave without changing the optical path. Accordingly, the apparatus is insensitive to changes in the external environment through a resonator having a structure comprising Porro prisms, and enables the final emission unit to selectively output the fourth-order harmonic wave or the fifth-order harmonic wave.

Abstract: An electronic device and a communication channel management method are provided. The electronic device includes a communication interface including a plurality of communication modules or configured to support a plurality of channel bands in one communication module, and a processor configured to establish a second communication channel based on another frequency band that an access point supports according to a specified condition if another frequency band connection of the same access point is available when establishing a first communication channel with the access point based on a specified frequency band.

Abstract: A method and device for hosting an application by an access node which provides network access to a terminal in a mobile communication system are provided. The method includes receiving a request packet for a service request from a user application of a mobile terminal, delivering the request packet to an application included in the access node, if a destination of the request packet corresponds to the application of the access node, providing a service to the user application of the mobile terminal through the application, and delivering the request packet to a corresponding public application on an external network, if the application corresponding to the destination of the request packet does not exist in the access node.

Abstract: A method for transmitting data in a core cache server of a communication system, according to one embodiment of the present invention, comprises the steps of: receiving, from a source base station, a core cache search signal; selecting a relay core cache unit according to the received core cache search signal; and transmitting content data to a target base station through the selected relay core cache unit. A cache server for transmitting and receiving data in a communication system, according to another embodiment of the present invention, comprises: one or more core cache units for storing content data; a receiving unit for receiving, from a source base station, a core cache search signal; a control unit for selecting a relay core cache unit among the one or more core cache units according to the received core cache search signal; and a transmission unit for transmitting the content data to a target base station through the selected relay core cache unit.

Abstract: An apparatus and a method to support visible and audible communications using various multimedia services are provided. A method to provide communications using a multimedia service in a server of a communication system is provided. The method includes receiving a voice call connection request for a second device from a first device. The method also includes providing the first device with visual multimedia information generated in advance, over a web network in relation to the second device. The method further includes connecting a voice call between the first device and the second device.

Abstract: Methods and apparatuses are provided for operating a server apparatus for providing a composite Automatic Response System (ARS) service through a mobile communication network. An ARS scenario and composite ARS related information are received from a first terminal. The composite ARS related information includes video ARS related information and voice ARS related information based on the ARS scenario. The ARS scenario and the composite ARS related information are stored. A call establishment request message directed to the first terminal, is received from the second terminal. The composite ARS related information is provided to the second terminal in response to the received call establishment request message. A call is established between the first terminal and the second terminal in response to an input for a call connection request, directed to the first terminal, received while the composite ARS related information is provided to the second terminal.

Abstract: Disclosed are a system and a method for transceiving data in an audio frequency band. The system includes a data input unit to input data for acoustic communication into an audio signal, a transmitting unit to transmit the audio signal including the data in the audio frequency band, and a receiving unit that receives the audio signal including the data and performs synchronization of the audio signal through a matched filtering using a matched filter in order to extract the data according to predetermined extraction processing. The data to be transmitted are added to an audio signal and the audio signal is transmitted in the audio frequency band, so that the data for the acoustic communication are effectively transmitted to the recipient in the audio frequency band.

Abstract: A system that provides a content delivery service to a user in a mobile communication system is provided. The system receives, from an enhanced Node B (eNB), cell-specific capacity information that is determined based on cell-specific load state information of the eNB, determines a transfer rate for traffic to be transmitted to a User Equipment (UE) in each cell, based on the received cell-specific capacity information, and transmits the traffic to be transmitted to the UE in each cell to the eNB at the determined transfer rate.

Abstract: Provided is a synchronization system and method for acoustic communication in audible frequency range, and an apparatus applied thereto. The synchronization system for acoustic communication in audible frequency range is configured to prevent deterioration of a synchronization performance and to reduce an amount of calculation by calculating a correlation based on a few samples as opposed to calculating a correlation for each sample when a receiver of the acoustic communication performs synchronization while the acoustic communication is performed in the audible frequency range through modification of an audio signal or adding of a predetermined signal to an audio signal.

Abstract: Provided is a data reception error reduction system and method in acoustic communication in audible frequency range, and an apparatus applied thereto. The data reception error reduction system in the acoustic communication in audible frequency range may be configured to reduce a data reception error in a receiver by taking into consideration that a sound signal is noisy and is significantly affected by a change in the ambient environment when the acoustic communication is performed in the audio frequency band through modification of an audio signal or adding of a predetermined signal to an audio signal. Accordingly, the data reception error may be reduced in the receiver even in an environment where a sound signal is noisy and is significantly affected by a change in the ambient environment, and reliability of data transmission may increase.

Abstract: A terminal, a method for operation of the terminal, and a method of interworking in a wireless communication system including an advanced network and a legacy network are provided. The method for operating the terminal includes monitoring a paging channel of the legacy network for a data paging message and a Circuit Switched (CS) paging message, when the terminal is in an idle state, receiving one of the CS paging message and data paging message, establishing a connection with the legacy network corresponding to the received one of the CS paging message and data paging message, wherein a CS voice connection is established with the legacy network if the CS paging message is received and a Packet Switched (PS) data connection is established with the legacy network if the data paging message is received, and performing a handover to the advanced network from the legacy network, if the PS data connection is established with the legacy network.

Abstract: Provided is a synchronization system and method for acoustic communication in audible frequency range, and an apparatus applied thereto. The synchronization system for acoustic communication in audible frequency range is configured to prevent deterioration of a synchronization performance and to reduce an amount of calculation by calculating a correlation based on a few samples as opposed to calculating a correlation for each sample when a receiver of the acoustic communication performs synchronization while the acoustic communication is performed in the audible frequency range through modification of an audio signal or adding of a predetermined signal to an audio signal.

Abstract: Provided is a data reception error reduction system and method in acoustic communication in audible frequency range, and an apparatus applied thereto. The data reception error reduction system in the acoustic communication in audible frequency range may be configured to reduce a data reception error in a receiver by taking into consideration that a sound signal is noisy and is significantly affected by a change in the ambient environment when the acoustic communication is performed in the audio frequency band through modification of an audio signal or adding of a predetermined signal to an audio signal. Accordingly, the data reception error may be reduced in the receiver even in an environment where a sound signal is noisy and is significantly affected by a change in the ambient environment, and reliability of data transmission may increase.

Abstract: Disclosed are a system and a method for transceiving data in an audio frequency band. The system includes a data input unit to input data for acoustic communication into an audio signal, a transmitting unit to transmit the audio signal including the data in the audio frequency band, and a receiving unit that receives the audio signal including the data and performs synchronization of the audio signal through a matched filtering using a matched filter in order to extract the data according to predetermined extraction processing. The data to be transmitted are added to an audio signal and the audio signal is transmitted in the audio frequency band, so that the data for the acoustic communication are effectively transmitted to the recipient in the audio frequency band.

Abstract: A terminal, a method for operation of the terminal, and a method of interworking in a wireless communication system including an advanced network and a legacy network are provided. The method for operating the terminal includes monitoring a paging channel of the legacy network for a data paging message and a Circuit Switched (CS) paging message, when the terminal is in an idle state, receiving one of the CS paging message and data paging message, establishing a connection with the legacy network corresponding to the received one of the CS paging message and data paging message, wherein a CS voice connection is established with the legacy network if the CS paging message is received and a Packet Switched (PS) data connection is established with the legacy network if the data paging message is received, and performing a handover to the advanced network from the legacy network, if the PS data connection is established with the legacy network.

Abstract: A terminal and an advanced Base Station (BS), and methods for their operation in a wireless communication system including an advanced network that provides a data service and a legacy network that provides a Circuit Switched (CS) voice service, are provided. The method for operating the terminal includes monitoring a paging channel of the advanced network for a data paging message and a paging channel of the legacy network for a CS paging message, when the terminal is in an idle state, receiving one of the CS paging message and data paging message, and establishing a connection with the one of the advanced network and the legacy network corresponding to the received one of the CS paging message and data paging message.

Abstract: Disclosed is a method for measuring a battery charge level of a portable terminal having a removable back-up battery. The method includes determining that the back-up battery is connected in parallel to an main battery of the portable terminal, disconnecting the main battery from the back-up battery for a period of time in a cycle, and checking voltage levels of the main battery and the back-up battery to measure a charge level of each battery while the batteries are disconnected.

Abstract: Disclosed herein is an apparatus for measuring adhesive and frictional properties of a polymer hemisphere relative to a contact plate provided in the apparatus. The apparatus comprise a body having a movable table installed to move along an X-axis and Y-axis and a vertical column positioned at a rear side of the movable table, a sample mount provided on the movable table and having a mirror to reflect surface images of a horizontal contact plate, a head assembly located at a front side of the column and having a polymer hemisphere used to press a surface of the contact plate to implement an adhesive force test, a camera device located at a front side of the mirror to capture the surface images of the contact plate during the adhesive force test, and a control device for analyzing various data inputted thereto during the adhesive force test.

Abstract: A method for sensing detachment of a external battery in a portable terminal including a connector with which the external battery is detachably assembled includes determining that the external battery is assembled with the connector when an output voltage is observed, connecting the connector and an internal battery of the portable terminal to supply power from the external battery to the internal battery, disconnecting the connector from the internal battery to check an output voltage of the connector, and determining that the external battery has been detached from the connector when an output voltage is not observed.