Abstract: A method of emitting wavelength-swept light includes controlling either one or both of magnitudes and on/off timings of currents to be applied to a first gain medium of a first optical generator and a second gain medium of a second optical generator to control an intensity and a wavelength region of each of first wavelength-swept light and second wavelength-swept light; generating the first wavelength-swept light having a first center wavelength based on the current applied to the first gain medium of the first optical generator; generating the second wavelength-swept light having a second center wavelength based on the current applied to the second gain medium of the second optical generator; and emitting output wavelength-swept light by coupling the first wavelength-swept light and the second wavelength-swept light.

Abstract: A light source system includes: a plurality of gain mediums configured to output a corresponding plurality of lights having different center wavelengths from each other; a first light source part configured to connect the plurality of gain mediums to each other in parallel and emit the plurality of lights; a wavelength-swept filter unit configured to sweep wavelengths of the plurality of lights output by the plurality of gain mediums and compensate for spectroscopic optical paths of the plurality of lights; a second light source part configured to connect the first light source part to the wavelength-swept filter unit in series and feed the wavelength-swept lights back to the plurality of gain mediums; a combiner configured to combine the wavelength-swept lights and output a combined wavelength-swept; and a controller configured to control an output magnitude and a wavelength region of the wavelength-swept lights.

Abstract: An electronic device and method that detects an event related to the user's skin and performs a function corresponding to the event by using information on the skin color type of the user, and further provides a control method thereof. The occurrence of an event is detected that is related to at least a part of a user's body. Information regarding a light is obtained a sensor module that is functionally connected with the electronic device according to the detection result. A function is performed that corresponds to the detected event by using information corresponding to the obtained information on a light from among type information stored in a memory.

Abstract: Provided is a frequency shifting optical swept light source system. The system includes a light source that emits light; an amplifier that amplifies the light output from the light source; an optical converter that shifts a frequency of the amplified light and compresses a spectrum of the amplified light; and a controller that controls a current signal applied to the light source such that a repetition rate of the light output from the light source is adjusted, so that an intensity of the amplified light is adjusted, to thereby adjust a position of the compressed spectrum with respect to a predetermined frequency band.

Abstract: A piston assembly for a shock absorber includes: a bypass passage formed along a vertical length direction of a piston rod in a small-diameter portion that is stepped in a lower portion of the piston rod reciprocating within a cylinder; a main piston connected to the small-diameter portion; an orifice assembly coupled to the small-diameter portion and disposed under the main piston to form an orifice passage, which communicates with the bypass passage; a housing coupled to the small-diameter portion and disposed under the orifice assembly, the housing having an opened upper side and forming a pressure chamber; and a sliding valve coupled to the orifice assembly and accommodated in the pressure chamber to generate a damping force by selectively opening and closing the orifice passage while reciprocating through a high-frequency section and a low-frequency section.

Abstract: A sound outputting apparatus and a method of controlling the same are provided. A method of controlling a sound outputting apparatus includes extracting a noise signal and a desired signal, estimating a direction of arrival (DoA) of the extracted desired signal, and outputting sound.

Abstract: Provided is a frequency shifting optical swept light source system. The system includes a light source that emits light; an amplifier that amplifies the light output from the light source; an optical converter that shifts a frequency of the amplified light and compresses a spectrum of the amplified light; and a controller that controls a current signal applied to the light source such that a repetition rate of the light output from the light source is adjusted, so that an intensity of the amplified light is adjusted, to thereby adjust a position of the compressed spectrum with respect to a predetermined frequency band.

Abstract: A method of displaying bio-information on a screen includes outputting basic bio-information of a plurality of bio-parameters indicating a condition of a patient on one display screen, determining an occurrence of an event related to the plurality of bio-parameters, converting the basic bio-information into detailed bio-information about one of the plurality of bio-parameters based on a result of the determining an occurrence of an event, and outputting the converted detailed bio-information on the one display screen.

Abstract: A piston assembly for a shock absorber includes: a bypass passage formed along a vertical length direction of a piston rod in a small-diameter portion that is stepped in a lower portion of the piston rod reciprocating within a cylinder; a main piston connected to the small-diameter portion; an orifice assembly coupled to the small-diameter portion and disposed under the main piston to form an orifice passage, which communicates with the bypass passage; a housing coupled to the small-diameter portion and disposed under the orifice assembly, the housing having an opened upper side and forming a pressure chamber; and a sliding valve coupled to the orifice assembly and accommodated in the pressure chamber to generate a damping force by selectively opening and closing the orifice passage while reciprocating through a high-frequency section and a low-frequency section.

Abstract: An apparatus and method for stabilizing an output of a laser is provided. An optical amplifier oscillates light having a first wavelength band. A filter filters the light having the first wavelength band to output light having a second wavelength band narrower than the first wavelength band. The light having the second wavelength band may correspond to an output of a laser. To stabilize the wavelength center of the output laser, at least a portion of the light having the second wavelength band may be transferred to a fiber Bragg Grating (FBG) through a coupler. By performing feedback of a difference between the signal output from the FBG and a laser modulation signal, an offset corresponding to a lead zirconate titanate (PZT) operating parameter of a Fabry-Perot filter may be controlled to automatically stabilize the wavelength center.

Abstract: A light source system includes: a plurality of gain mediums configured to output a corresponding plurality of lights having different center wavelengths from each other; a first light source part configured to connect the plurality of gain mediums to each other in parallel and emit the plurality of lights; a wavelength-swept filter unit configured to sweep wavelengths of the plurality of lights output by the plurality of gain mediums and compensate for spectroscopic optical paths of the plurality of lights; a second light source part configured to connect the first light source part to the wavelength-swept filter unit in series and feed the wavelength-swept lights back to the plurality of gain mediums; a combiner configured to combine the wavelength-swept lights and output a combined wavelength-swept; and a controller configured to control an output magnitude and a wavelength region of the wavelength-swept lights.

Abstract: A method of measuring skin moisture content, the method including: measuring a differential rate of a skin impedance of a predetermined skin area of a user for a predetermined period of time; and determining that the skin area is a moist area when the differential rate of skin impedance is greater than or equal to a predetermined value for a predetermined period of time, and determining that the skin area is a dry area when the differential rate of skin impedance is less than the predetermined value for the predetermined period of time.

Abstract: Disclosed herein is an impact sensitive damper damping vibration transferred from a road surface to a vehicle, and more particularly, to an impact sensitive damper in which handling stability may be achieved in a low speed operating section of the damper and improvement of ride comfort may be achieved in a high speed operating section thereof.

Abstract: A blood vessel pressing cuff includes a strap surrounding a body part, a first actuator disposed on the strap and including a first shape memory alloy which changes to a first shape memorized in advance, at a temperature equal to or higher than a first temperature, and a second actuator disposed on the strap and including a second shape memory alloy which changes to a second shape memorized in advance, at a temperature equal to or higher than a second temperature that is different from the first temperature. If the first shape memory alloy changes to the first shape, pressure applied to the body part surrounded by the strap is increased. Even when the first shape memory alloy changes to the first shape, if the second shape memory alloy changes to the second shape, the pressure applied to the body part surrounded by the strap is reduced.

Abstract: A method of emitting wavelength-swept light includes controlling either one or both of magnitudes and on/off timings of currents to be applied to a first gain medium of a first optical generator and a second gain medium of a second optical generator to control an intensity and a wavelength region of each of first wavelength-swept light and second wavelength-swept light; generating the first wavelength-swept light having a first center wavelength based on the current applied to the first gain medium of the first optical generator; generating the second wavelength-swept light having a second center wavelength based on the current applied to the second gain medium of the second optical generator; and emitting output wavelength-swept light by coupling the first wavelength-swept light and the second wavelength-swept light.

Abstract: An apparatus and method for stabilizing an output of a laser is provided. An optical amplifier oscillates light having a first wavelength band. A filter filters the light having the first wavelength band to output light having a second wavelength band narrower than the first wavelength band. The light having the second wavelength band may correspond to an output of a laser. To stabilize the wavelength center of the output laser, at least a portion of the light having the second wavelength band may be transferred to a fiber Bragg Grating (FBG) through a coupler. By performing feedback of a difference between the signal output from the FBG and a laser modulation signal, an offset corresponding to a lead zirconate titanate (PZT) operating parameter of a Fabry-Perot filter may be controlled to automatically stabilize the wavelength center.

Abstract: An apparatus to measure skin moisture content, the apparatus including: an electrode unit comprising a reference (R) electrode, a current (C) electrode, and a measuring (M) electrode; an operational amplifier having an inverting input terminal connect with the R electrode, and having an output terminal connect with the C electrode; a first switch connecting the R electrode and the C electrode, and releasing a connection between the R electrode and the C electrode when the electrode unit contacts with the skin of a user; and a microcontroller controlling the connection between the R electrode and the C electrode via the first switch is provided.

Abstract: A method and an apparatus for outputting body information of a user. The method of outputting the body information of a user comprises: designating coordinate points of the body information according to first, second, and third body information on a three-dimensional coordinate having the first, second, and third coordinates as coordinate axes; and outputting comparison information between the user body figure and the average body figure from the distance between the coordinate point of the body information of the average body figure designated on a three-dimensional coordinate in advance and the coordinate point of the body information of the user.

Abstract: An apparatus for providing skin care information, the apparatus including: an electrode unit supplying a voltage to a user's skin and detecting a current signal in the user's skin; a measurement control unit measuring the user's skin moisture content and sweat gland activity by using the detected current signal; a data calculation unit deriving skin moisture content information by using the skin moisture content and the sweat gland activity, and generating skin care information corresponding to the skin moisture content information; and an information provider providing the user with the generated skin care information is provided.

Abstract: An apparatus for measuring skin moisture content in a user's skin is provided. The apparatus may include a signal supplier to generate an out-of-phase signal from a voltage signal obtained from the user's skin and an in-phase signal from the voltage signal, a susceptance measurement unit to measure the susceptance of the voltage signal by synchronizing the voltage signal and the out-of-phase signal received from the signal supplier, a conductance measurement unit to measure the conductance of the voltage signal by synchronizing the voltage signal and the in-phase signal, and an output unit to output sweat gland activity information of the user based on the measured conductance and skin moisture content information of the user based on the measured susceptance.