Abstract: An apparatus for estimating a skin condition includes a data acquirer configured to acquire an optical absorption spectrum of a skin; and a processor configured to determine content of a component in the skin from the optical absorption spectrum and determine a skin condition based on the determined content of the component in the skin.

Abstract: A multi-link door hinge is proposed. The multi-link door hinge includes: a main body frame provided in a main body of an apparatus having a door; a door frame provided on the door; a body frame rotatably connected to one side portion of the main body frame; an inner link and an outer link rotatably connecting the door frame to the body frame; a leaf spring link rotatably connecting the main body frame to the outer link; an upper cam coupled to a portion connecting the body frame to the inner link in a co-rotatable manner, provided between first and second side portions of a sidewall of the inner link, and securely coupled to the body frame; an upper elastic member having a first side portion provided inside the inner link and a second side portion rollably coupled to the upper cam and elastically supporting the door frame.

Abstract: A multi-link hinge is proposed. The multi-link hinge is configured to facilitate closing and opening of a door, is capable of sufficiently securing a maximum opening angle of the door while decreasing a gap between the door and a main body, and is also capable of providing convenience to a user when the user opens and closes the door.

Abstract: A multi-link door hinge capable of facilitating the closing of a door and implementing the shock-absorbing performance of the door during the closing thereof. To this end, the multi-link door hinge includes: a main frame mounted to a main body of an object having a door; a door frame mounted to the door; a body frame rotatably connected to a first side of the main frame; an inner link and an outer link connecting the door frame to the body frame; a plate spring link allowing the outer link to be rotatably connected to the main frame; a locking piece rotatably mounted between side walls of the inner link; an elastic member; and a hook, a first side of which is fixed in the body frame and a second side of which is configured to be held in a second side of the locking piece.

Abstract: A home appliance in which an opening and closing operation of a door and a turning operation of a handle are connected through five joints, so that the turning operation of the handle can be performed smoothly, and a latch for fixing the door to a body moves to a position parallel to the door when the door is opened, so that a user is prevented from being interfered with the latch while opening the door and using a cavity of the home appliance.

Abstract: A spectrometer includes a chamber, a vacuum generator configured to suck in internal air of the chamber to pull skin of a subject into the chamber, a light source configured to emit light to the skin of the subject pulled into the chamber, a photodetector configured to receive light passing through the skin of the subject and acquire a spectrum of the light; and a skin contact adjuster configured to determine a contact state between the chamber and the skin by analyzing the spectrum of the light and thereby generate a determination result, and adjust the contact state between the chamber and the skin by applying a physical force to a periphery of the skin pulled into the chamber according to the determination result.

Abstract: Disclosed is a method for predicting an in vivo concentration of an analyte, including: estimating an in vivo intrinsic spectrum of the analyte; and predicting the in vivo concentration of the analyte by using a concentration predicting algorithm based on the estimated in vivo intrinsic spectrum and an in vivo spectrum obtained during a section in which the in vivo concentration of the analyte is not substantially changed.

Abstract: Disclosed is a method for predicting an in vivo concentration of an analyte, including: estimating an in vivo intrinsic spectrum of the analyte; and predicting the in vivo concentration of the analyte by using a concentration predicting algorithm based on the estimated in vivo intrinsic spectrum and an in vivo spectrum obtained during a section in which the in vivo concentration of the analyte is not substantially changed.

Abstract: A multi-link door hinge capable of facilitating the closing of a door and implementing the shock-absorbing performance of the door during the closing thereof. To this end, the multi-link door hinge includes: a main frame mounted to a main body of an object having a door; a door frame mounted to the door; a body frame rotatably connected to a first side of the main frame; an inner link and an outer link connecting the door frame to the body frame; a plate spring link allowing the outer link to be rotatably connected to the main frame; a locking piece rotatably mounted between side walls of the inner link; an elastic member; and a hook, a first side of which is fixed in the body frame and a second side of which is configured to be held in a second side of the locking piece.

Abstract: An apparatus for updating a bio-information estimation model according to an aspect of the invention includes: a data obtainer, which in response to a bio-information estimation model not being valid, is configured to obtain in vivo updating spectra measured during a predetermined period of time from a time when it is determined that the bio-information estimation model is not valid; and a processor configured to determine validity of the bio-information estimation model, and to update the bio-information estimation model using the obtained in vivo updating spectra and in vivo spectra used for generating the bio-information estimation model.

Abstract: An apparatus for determining a validity of a bio-information estimation model includes a data acquirer interface configured to acquire an in vivo spectrum of an object, and acquire bio-information and a concentration of a main component which are estimated based on the in vivo spectrum and a bio-information estimation model; and a processor configured to acquire a residual spectrum of the acquired in vivo spectrum based on the acquired in vivo spectrum, the acquired bio-information, and the acquired concentration of the main component, determine a similarity between the acquired residual spectrum and a reference residual spectrum, and determine the validity of the bio-information estimation model based on the determined similarity.

Abstract: An apparatus for estimating an analyte concentration includes a spectrum acquisition device configured to obtain a plurality of in vivo spectra for training which are measured during a first interval, and obtain an in vivo spectrum for analyte concentration estimation which is measured during a second interval, and a processor configured to generate a plurality of candidate concentration estimation models by varying a number of principal components based on the plurality of in vivo spectra for training, obtain a plurality of residual vectors corresponding to the plurality of in vivo spectra for training by using the plurality of candidate concentration estimation models, select a candidate concentration estimation model, from among the plurality of candidate concentration estimation models, based on the plurality of residual vectors, and estimate the analyte concentration by using the selected candidate concentration estimation model and the in vivo spectrum for analyte concentration estimation.

Abstract: An apparatus for estimating a concentration of an analyte may include a spectrum acquisition device configured to acquire a first in vivo spectrum of an object, and a processor configured to estimate the concentration of the analyte using the first in vivo spectrum and a concentration estimation model that is generated based on a second in vivo spectrum measured during a timeframe in which the concentration of the analyte in the object is substantially constant, and update the concentration estimation model based on the first in vivo spectrum and the estimated concentration of the analyte.

Abstract: An apparatus for estimating a skin condition includes a data acquirer configured to acquire an optical absorption spectrum of a skin; and a processor configured to determine content of a component in the skin from the optical absorption spectrum and determine a skin condition based on the determined content of the component in the skin.

Abstract: An apparatus for estimating a skin condition includes a data acquirer configured to acquire an optical absorption spectrum of a skin; and a processor configured to determine content of a component in the skin from the optical absorption spectrum and determine a skin condition based on the determined content of the component in the skin.

Abstract: A bio-signal detecting apparatus, and an apparatus and method for processing bio-information are provided. The bio-signal detecting apparatus includes: a plurality of detection modules, each detection module of the plurality of detection modules including a detector disposed at a center thereof and a plurality of light sources disposed at a circumference centered at the detector, wherein the plurality of detection modules include a first detection module and a second detection module that is disposed adjacent to the first direction module, a circumference of the first detection module intersects with a circumference of the second detection module, and one or more light sources of the plurality of light sources are disposed at intersection points where the circumference of the first detection module intersects with the circumference of the second detection module.

Abstract: A spectrum quality assessment apparatus includes a spectrum obtainer configured to obtain a skin spectrum; and a processor configured to assess a quality of the obtained skin spectrum based on at least one of a light intensity of the obtained skin spectrum, an absorbance with respect to a wavelength of the obtained skin spectrum, a spectrum reconstructed based on a skin composition spectrum, and a similarity between a reference skin spectrum and the obtained skin spectrum.

Abstract: A user authentication apparatus using a Raman spectrum is provided. The user authentication apparatus includes a Raman spectrum analyzer configured to analyze user characteristic information from a Raman spectrum of a user, and an authenticator configured to authenticate the user, based on the analysis.

Abstract: A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.

Abstract: The spectrometer includes a spectrometer body; a shield including a layer on an exterior of the spectrometer body to prevent light from entering and escaping through an area other than a contact surface between the spectrometer body and an object; an internal light source placed within the shield and configured to emit light to the object; a spectroscope mounted in the spectrometer body and configured to allow the light that passes therethrough to be casted into a spectrum; a detector configured to have one surface that is in full contact with the spectroscope and to detect external light entering from outside of the shield; and a processor configured to, in response to the detector detecting the external light, perform a certain processing.