Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Lg Chem, Ltd

Electronics and Telecommunications Research Institute

Korea Institute of Science and Technology

Yonsei University

Korea Atomic Energy Research Institute

Samsung Electro-Mechanics Co., Ltd.

Hyundai Motor Company

Seoul National University

Postech Academy-Industry Foundation

Industry-University Cooperation Foundation Hanyang University

University-Industry Cooperation Group of Kyung Hee University

Snu Rdb Foundation

Korea Telecommunication Authority

Young Soo Kim

Ui Kun Kwon

Chang Soon Park

Soon Ho Ahn

Young Jun Hong

Hyo Sun Hwang

Dae Geun Jang

Eung Sun Kim

Hyun Ho Choi

Youn Ho Kim

Byung Hoon Ko

Chang Mok Choi

Young Bok Son

Hongseok Lee

Dong Soo Kim

Jae Seung Lee

Kwang Soo Kim

Kyung Hun Jang

Si Moon Jeon

Dong Hyun Kim

Tae Wan Kim

Kyung Chul Woo

Han Soo Kim

Kyeong Hwan Kim

Sang Hun Bae

Sang Yun Park

Dong Jin Kim

Jang Won Lee

Cha Hun Ku

Joon Sung Bae

Sung-Min Kim

Minsu Kim

Hyunjin Kim

Hyun Jin Kim

Geeyoung Sung

Jong Ho Lee

Jung Min Kim

Yong-Seok Choi

Jungkwuen An

Chan Kim

Jeong Min Kim

Jae Min Kang

Jae Kyum Kim

Seung Keun Yoon

Jung Woo Lee

Joon Seong Kang

Yong Joo Kwon

Sung Soo Park

Byung Hee Hong

Tae Soo Kwon

Tae Il Kim

Yong Suk Jin

Dae Bong Yang

Deug Hee Lee

Yang Ho Kim

Hung Myong Cho

Soung Bong Choi

Tae In Hyon

Tae Rim Park

Byung Hwan Ahn

Sujit Jos

In Sun Lee

Seong Hae Jeong

Jong Wook Lee

Chul Jin Choi

Manoj Choudhary

Kiran Bynam

Joo Young Lee

In Geun Ahn

Hyun Gi Ahn

Chang Woo Son

Young In Kim

Hyun Sook Cho

Jeong Eun Hwang

Jinesh Parameshwaran Nair

Keung Koo Kim

Duk Hyun Ryu

In Haeng Cho

Phal Jin Lee

Jong-Young Hong

Jung Joo Yoo

Sooyong Choi

Dek Gin Yang

Koon Seok Lee

Yoon Soo Kim

Won Bin Hong

Kanghee Won

Jonghyun Lee

Shubhranshu Singh

Byung Chul Kim

Sung-Min Park

Yongok Kim

Byonggwon Song

Chunhui Zhu

Jae Wook Shim

Daesik Hong

Seok Won Lee

Byung-Ju Yi

Ji Yoon Kang

Young Ju Lee

An apparatus for estimating blood pressure may include a sensor configured to measure a bio-signal from an object; and a processor configured to: obtain a cardiac output (CO) feature based on the bio-signal; obtain a total peripheral resistance (TPR) feature by combining an amplitude of a propagation wave component and amplitudes of at least two reflection wave components of the bio-signal, in response to a variation of the CO feature at a blood pressure measurement time relative to a calibration time, being within a predetermined range; obtain the TPR feature by combining the amplitude of the propagation wave component and an amplitude of one reflection wave component of the at least two reflection wave components, in response to the variation of the CO feature not being within the predetermined range; and estimate blood pressure based on the CO feature and the TPR feature.

Apparatus and method for estimating blood pressure

An apparatus for non-invasively estimating bio-information and a method of determining whether a bio-signal is normal by the apparatus for estimating bio-information are provided. The apparatus for estimating bio-information according to an embodiment of the disclosure includes: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from an object; and a processor configured to extract a plurality of pairs of local maximum points and local minimum points from a second derivative signal of the PPG signal, to select at least one reference pair from among the extracted plurality of pairs, and to determine whether the PPG signal is normal based on the selected at least one reference pair.

Apparatus for estimating bio-information and method of detecting abnormal bio-signal

An apparatus for estimating blood pressure may include: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from a user; and a processor configured to: extract a cardiovascular feature from the PPG signal; calculate a first variation in the extracted cardiovascular feature compared to a reference cardiovascular feature measured at a reference time; determine a measurement posture of the PPG signal based on a time interval between two waveform components of the PPG signal; in response to the measurement posture corresponding to the reference posture, estimate the blood pressure based on the first variation; and in response to the measurement posture not corresponding to the reference posture, obtain a second variation by correcting the first variation; and estimate blood pressure based on the second variation.

An apparatus for estimating blood pressure may include: a memory storing one or more instructions; and a processor configured to execute the one or more instructions to: extract a cardiac output (CO) feature, a first candidate total peripheral resistance (TPR) feature, and a second candidate TPR feature from a bio-signal; determine one of the first candidate TPR feature and the second candidate TPR feature as a TPR feature based on a direction of change in the CO feature and a direction of change in the first candidate TPR feature between a blood pressure measurement time and a calibration time; and estimate the blood pressure based on the TPR feature and the CO feature.

Proposed is a blender in which multiple blades have different bending or twisting angles. The blender includes a container body in which food is received, a main body provided under the container body and configured to support the container body, a container lid mounted detachably to the upper surface of the container body and configured to open and close the upper surface of the container body, and a blade assembly which crushes food contained in the container body by blades. The blade assembly includes a main blade unit having multiple main blades, and an auxiliary blade unit having an auxiliary blade located between the multiple main blades, wherein the multiple main blades have bending or twisting angles different from each other. In such a blender, the cutting efficiency of food materials is improved and noise is decreased.

Blender

A method of determining regularity of a bio-signal is provided. The method of determining regularity of a bio-signal according may include acquiring a plurality of pulse waveforms of the bio-signal, acquiring a plurality of slope waveforms corresponding to the plurality of pulse waveforms, binarizing the plurality of slope waveforms, acquiring synchronization information of the plurality of pulse waveforms based on binarizing the plurality of pulse waveforms; acquiring a synchronization rate of a reference interval based on the synchronization information, and determining whether the bio-signal is regular or irregular based on the synchronization rate of the reference interval.

Method of determining regularity of bio-signal, apparatus and method for estimating bio-information

An adaptive bio-signal feature combining apparatus includes: a feature extractor configured to extract first feature values and second feature values from a bio-signal of an object; a stable interval determiner configured to determine at least one stable interval in the bio-signal; a statistical variable calculator configured to calculate a statistical variable value of a first feature and a statistical variable value of a second feature for each of the at least one stable interval based on the first and second feature values extracted from the at least one stable interval; and a feature combiner configured to calculate an integrated combining coefficient that is used to combine the first feature and the second feature, based on the statistical variable value of the first feature and the statistical variable value of the second feature.

Adaptive bio-signal feature combining apparatus and method

A method of obtaining a feature for blood pressure estimation is provided. The method includes extracting a reference feature from a bio-signal; obtaining a feature for blood pressure estimation by: obtaining, as the feature for blood pressure estimation, a first candidate feature based on the reference feature being less than a first threshold; obtaining, as the feature for blood pressure estimation, a second candidate feature based on the reference feature being greater than or equal to a second threshold that is greater than the first threshold; or obtaining, as the feature for blood pressure estimation, a combination of the first candidate feature and the second candidate feature based on the reference feature being less than the second threshold; and estimating a blood pressure by using the obtained feature.

Method of obtaining feature for blood pressure estimation, apparatus and method for estimating blood pressure

An apparatus for estimating blood pressure is provided. The apparatus for estimating blood pressure according to an example embodiment includes: a sensor configured to measure a photoplethysmogram (PPG) signal from an object; and a processor configured to detect a position of a dicrotic notch based on a local maximum point and a local minimum point of a second-order derivative signal of the PPG signal, to obtain a first value and a second value from a first section and a second section of the PPG signal divided based on the dicrotic notch of the PPG signal, to obtain a pulse pressure feature value based on the first value and the second value, and to estimate blood pressure based on a variation in the obtained pulse pressure feature value compared to a reference pulse pressure feature value.

The present specification provides a heating system including: a heating unit including a substrate and a heating layer provided on the substrate and including graphene; an electromagnetic wave irradiation unit configured to irradiate at least one region of the heating unit with electromagnetic waves; and a control unit configured to control an operation of the electromagnetic wave irradiation unit, wherein the heating layer emits heat by absorbing the electromagnetic waves.

Heating system and heating element

An apparatus for obtaining bio-information may include a pulse wave sensor including a light source and a detector. The light source is configured to emit multi-wavelength light to an object of interest and the detector is configured to detect light reflected from the object. In addition, the apparatus may include a processor configured to obtain a change in volume of a blood vessel based on one or more of quantity of detected multi-wavelength light and absorbance coefficients of respective wavelengths of the multi-wavelength light and obtain bio-information based on the measured change in volume of the blood vessel.

Apparatus and method for obtaining bio-information

A blender includes a container body in which food is accommodated, a main body to support the container body, and an air guide provided in the main body to guide discharging of air flowing through a motor assembly to below the main body.

A geometric phase optical element and a three-dimensional display apparatus including the same are provided. The geometric phase optical element includes: a liquid crystal layer; a first electrode on a surface of the liquid crystal layer; and a second electrode on another surface of the liquid crystal layer, wherein, when no voltage is applied to the first and second electrodes, the liquid crystal layer is configured such that a phase difference according to an arrangement of the liquid crystal is π and light transmitted through the liquid crystal layer is diffracted by a first deflection angle, and when a first voltage that causes the phase difference according to the arrangement of the liquid crystal to become π/2 is applied to the first and second electrodes, the liquid crystal layer is configured such that the light transmitted through the liquid crystal layer is diffracted by a second deflection angle.

Geometric phase optical element and three-dimensional display apparatus including the same

A three-dimensional holographic display device includes a light emitting diode (LED) array including a plurality of light sources controlled to sequentially output light according to a preset pattern, a lens configured to refract light incident from the LED array, a spatial light modulator (SLM) configured to modulate light incident from the lens, and a processor configured to generate a plurality of holographic signals each comprising depth information adjusted according to an arrangement location of each of the plurality of light sources, and for each of the plurality of light sources, control the SLM to modulate the light based on a holographic signal corresponding to the light source.

3D holographic display device and operating method of the same

A bio-signal measuring apparatus includes: a substrate; a pulse wave measurer provided at the substrate and configured to measure pulse waves of a subject; and a pressure measurer provided at the substrate and configured to measure a contact pressure between the subject and the pulse wave measurer.

Bio-signal measuring apparatus

Growing community of inventors

Seoul, South Korea

Young Soo Kim