Abstract: A channel searching method may include setting a first channel in a broadcast signal, determining signal strength of the broadcast signal and generating an automatic gain control signal for the first channel, and when the signal strength satisfies a preset first requirement and the automatic gain control signal satisfies a preset second requirement, skipping demodulation of the first channel.

Abstract: A bridge device controlling system may include: a bridge device including an authentication code; and a wireless communications terminal generating authentication information depending on the authentication code provided by the bridge device and providing the generated authentication information to the bridge device. The bridge device may provide authentication authority to the wireless communications terminal in the case in which the authentication information provided by the wireless communications terminal coincides with preset reference information.

Abstract: An apparatus for searching broadcast channels may include a broadcast signal distributing unit distributing a broadcast signal, a first channel searching unit searching an analog broadcast channel in the distributed broadcast signal, a second channel searching unit searching a digital broadcast channel in the distributed broadcast signal, and a controlling unit receiving search results from the first channel searching unit and the second channel searching unit, generating effective channel information regarding the analog broadcast channel and the digital broadcast channel using the received search results, and controlling the second channel searching unit to skip a channel search in a frequency band in which the analog broadcast channel is present using the generated effective channel information regarding the analog broadcast channel when the search for the analog broadcast channel by the first channel searching unit is terminated first.

Abstract: Provided is a method of locating a damage source of a wind turbine blade for tracking a damage source location of a blade used in a wind power generator, and more particularly, a method of locating a damage source of a wind turbine blade and an apparatus thereof in a large composite material structure capable of accurately locating a damage source even in a large composite material structure by detecting defects using contour maps written based on elastic wave energy value. The method of locating a damage source of the wind turbine blade according to the present invention can accurately locate the damage source even in the large composite material structure using at least two materials unlike the related art and can use a smaller number of AE sensor than the related art.

Abstract: The present invention is effective in that automatically corrected temperature can be measured using one light source and one optical detector.

Abstract: Provided is an acoustic sensor for measuring a sound wave propagating through a gas such as air or a fluid such as water and an elastic wave propagating through a solid medium, and more particularly, an acoustic sensor with a piezo-arrangement film capable of detecting frequencies in a broad band or amplifying a signal at a specific frequency by comparting a waveguide into an upper waveguide and a lower waveguide by means of a compartment diaphragm and arranging piezoelectric sensors on the compartment diaphragm in several forms. The acoustic sensor can be utilized as a resonant acoustic sensor in which the piezoelectric sensors are arranged on the compartment diaphragm in the same form so that a signal at a specific frequency overlaps for high sensibility or a broadband acoustic sensor in which the piezoelectric sensors are arranged in a different form to detect frequencies in a broad band.

Abstract: Provided is an acoustic sensor for measuring a sound wave propagating through a gas such as air or a fluid such as water and an elastic wave propagating through a solid medium, and more particularly, an acoustic sensor with a piezo-arrangement film capable of detecting frequencies in a broad band or amplifying a signal at a specific frequency by comparting a waveguide into an upper waveguide and a lower waveguide by means of a compartment diaphragm and arranging piezoelectric sensors on the compartment diaphragm in several forms. The acoustic sensor can be utilized as a resonant acoustic sensor in which the piezoelectric sensors are arranged on the compartment diaphragm in the same form so that a signal at a specific frequency overlaps for high sensibility or a broadband acoustic sensor in which the piezoelectric sensors are arranged in a different form to detect frequencies in a broad band.

Abstract: A sensor for detecting surface defects of a metal tube solves a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. The sensor includes a plurality of coils wound at a predetermined inclined angle. The plurality of coils is inserted into the inside of a metal tube. Alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.

Abstract: Disclosed herein is a sensor for detecting surface defects of a metal tube, which can solve a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. For this purpose, the present provides a sensor for detecting surface defects of a metal tube, the sensor including a plurality of coils wound at a predetermined inclined angle, wherein the plurality of coils is inserted into the inside of a metal tube and an alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.

Abstract: Provided is a physical quantity measuring method using a Brillouin optical fiber sensor. An optical fiber is set on a structure and a pair of pulse lights having different pulse widths is selected. The pulse lights are sequentially transmitted through the optical fiber to obtain back scattering lights and Brillouin gain spectra. The Brillouin gain spectra are compared to each other to calculate a normalized spectrum and a Brillouin frequency is acquired based on the normalized spectrum. The Brillouin frequency is multiplied by a conversion factor of a corresponding physical quantity of the structure to obtain the physical quantity. Accordingly, a portion of the optical fiber from which a sensing signal can be acquired is shortened to improve spatial resolution.

Abstract: Disclosed are a mobile communication terminal provided with a hands-free function and a controlling method thereof comprising the steps of: setting a hands-free function of a mobile communication terminal; certifying whether an originating call command or a calling request message are received; searching information of a calling party inputted by a user's voice or an arbitrary originating party's information from a mounted telephone directory; and guiding the searched calling party's information by voice and then connecting a calling. According to this, the user can originate or receive a calling by using a voice recognition function and the hands-free function of the terminal without his hands' using even while driving.

Abstract: Disclosed are a mobile communication terminal provided with a hands-free function and a controlling method thereof comprising the steps of: setting a hands-free function of a mobile communication terminal; certifying whether an originating call command or a calling request message are received; searching information of a calling party inputted by a user's voice or an arbitrary originating party's information from a mounted telephone directory; and guiding the searched calling party's information by voice and then connecting a calling. According to this, the user can originate or receive a calling by using a voice recognition function and the hands-free function of the terminal without his hands' using even while driving.

Abstract: The present invention provides a cored tablet comprising a core layer containing clavulanate, and an outer layer containing amoxicillin and surrounding the core layer, and a method for preparing the same.

Abstract: Disclosed are a mobile communication terminal provided with a hands-free function and a controlling method thereof comprising the steps of: setting a hands-free function of a mobile communication terminal; certifying whether an originating call command or a calling request message are received; searching information of a calling party inputted by a user's voice or an arbitrary originating party's information from a mounted telephone directory; and guiding the searched calling party's information by voice and then connecting a calling. According to this, the user can originate or receive a calling by using a voice recognition function and the hands-free function of the terminal without his hands' using even while driving.

Abstract: Disclosed are a mobile communication terminal provided with a hands-free function and a controlling method thereof comprising the steps of: setting a hands-free function of a mobile communication terminal; certifying whether an originating call command or a calling request message are received; searching information of a calling party inputted by a user's voice or an arbitrary originating party's information from a mounted telephone directory; and guiding the searched calling party's information by voice and then connecting a calling. According to this, the user can originate or receive a calling by using a voice recognition function and the hands-free function of the terminal without his hands' using even while driving.