Abstract: An apparatus for estimating blood pressure, includes a pulse wave sensor configured to measure a first pulse wave signal from a user, and a processor configured to differentiate or integrate the measured first pulse wave signal to obtain a reference signal, correct the measured first pulse wave signal, based on the obtained reference signal, to obtain a second pulse wave signal, and estimate the blood pressure, based on the obtained second pulse wave signal.

Abstract: An apparatus for estimating bio-information, includes a pulse wave sensor configured to measure a pulse wave signal from a user, and a processor configured to obtain two or more parameters among a maximum point, an average point, and an onset point, from a waveform of the measured pulse wave signal, and combine the obtained two or more parameters to generate a pulse wave analysis result.

Abstract: An apparatus for estimating blood pressure includes: a ballistocardiogram (BCG) sensor configured to measure a limb BCG signal from a user; and a processor configured to obtain blood pressure-related features from the measured limb BCG signal, according to sensing characteristics of the BCG sensor, and estimate a blood pressure of the user based on the obtained blood pressure-related features.

Abstract: An apparatus for estimating a blood pressure, includes a sensor configured to measure a bio-signal, and a processor configured to acquire a feature value from the bio-signal, and detect a blood pressure change sign, based on the feature value. The processor is further configured to acquire a scale factor, based on the blood pressure change sign, and estimate the blood pressure, based on the feature value and the scale factor.

Abstract: An apparatus for estimating blood pressure is provided. According to one embodiment, the apparatus for estimating blood pressure may include a sensor configured to measure a bio-signal from a subject, and a processor configured to acquire, form the bio-signal, a first feature value associated with cardiac output (CO) and a second feature value associated with total peripheral resistance (TPR), determine whether a current mechanism of blood pressure change of the subject is a post-exercise hypotension mechanism based on the first feature value and the second feature value, and estimate blood pressure according to determination of whether the current mechanism is the post-exercise hypotension mechanism.

Abstract: A blood pressure estimating apparatus is provided. The blood pressure estimating apparatus may include: a sensor configured to measure a bio-signal waveform; and a processor configured to obtain a first feature based on a first area under the bio-signal waveform in a first time interval, obtain a second feature based on a second area under the bio-signal waveform in a second time interval which is different from the first time interval, and estimate blood pressure based on the first feature and the second feature.

Abstract: A method and an apparatus for assessing cardiopulmonary fitness of a user are provided. A method of assessing cardiopulmonary fitness involves measuring a biosignal of a user performing an activity, measuring an exercise intensity of the activity, determining a parameter based on the biosignal and the exercise intensity, estimating a cardiopulmonary fitness index based on the parameter, and assessing the cardiopulmonary fitness of the user based on the cardiopulmonary fitness index.

Abstract: An apparatus for non-invasively estimating blood pressure is provided. According to one embodiment, the apparatus for estimating blood pressure may include a bio-signal sensor configured to measure a bio-signal from a user and a processor configured to extract a feature from the bio-signal at an extraction time, acquire an offset based on a relative change value of the feature extracted at the extraction time, relative to a reference value of the feature obtained a time of calibration, and estimate blood pressure based on the relative change value of the extracted feature and the acquired offset.

Abstract: An apparatus for non-invasively estimating blood pressure is provided. Thee apparatus for estimating blood pressure may include a bio-signal measurer configured to measure a bio-signal from a user and a processor configured to estimate blood pressure using the measured bio-signal. The processor may extract a first feature and a second feature from the bio-signal at an extraction time, estimate changes in the first feature and the second feature which have occurred during a time period from a calibration time at which the first feature and the second feature are calibrated to the extraction time at which the first feature and the second feature are extracted, and estimate a blood pressure based on the changes in the first feature and the second feature.

Abstract: An apparatus for estimating bio-information is disclosed. The bio-information estimating apparatus includes: a sensor configured to measure a bio-signal; and a processor configured to obtain one or more characteristic points, related to one or more pulse waveform components constituting the bio-signal, based on a differential signal of the bio-signal, and to estimate bio-information based on the obtained one or more characteristic points.

Abstract: An apparatus for calibration of a bio-information estimation model includes a sensor configured to obtain a bio-signal from an object in a reference interval; a feature extractor, implemented by at least one processor, configure to extract a reference feature value from the bio-signal; and a calibrator, implemented by the at least one processor, configured to determine whether a condition is satisfied based on at least one of the reference feature value and an offset value, and based on determining that the condition is satisfied, configured to calibrate the bio-information estimation model based on the reference feature value and the offset value.

Abstract: An apparatus for measuring blood pressure according to one aspect may include a limb ballistocardiogram (BCG) sensor configured to attach to a limb of a user and measure a limb BCG signal of the user, and a processor configured to extract blood pressure-related features from the measured limb BCG signal and estimate blood pressure of the user based on at least part of the extracted blood pressure-related features.

Abstract: A representative waveform providing apparatus and method, a blood pressure estimation apparatus, and a wearable device are provided. The representative waveform providing apparatus may include a signal obtainer configured to obtain a periodic signal and a processor configured to determine a representative waveform of the periodic signal by using a dynamic time warping algorithm.

Abstract: An apparatus for estimating bio-information may include: a bio-signal acquirer configured to acquire a bio-signal; and a processor configured to extract one or more first feature values from the bio-signal, determine a scale factor based on the first feature values, and to estimate bio-information based on the scale factor and the first feature values.

Abstract: A dietary habit management apparatus and method are provided. The dietary habit management apparatus includes a bio-signal acquirer configured to acquire a bio-signal of a user, and a processor configured to obtain a total peripheral resistance (TPR) reflected index, from the bio-signal that is acquired by the bio-signal acquirer, and determine whether the user has eaten food, based on the TPR reflected index.

Abstract: A method of providing an exercise program includes providing a coaching message to coach a training pace in an exercise program based on a heart rate of a user performing the exercise program, adjusting an exercise intensity of a current set of exercises of the exercise program based on the coaching message, and providing the exercise program based on the adjusted exercise intensity.

Abstract: A bio-information measuring apparatus bio-information measuring method are provided. The bio-information measuring apparatus includes: a pulse wave obtainer configured to obtain a pulse wave signal, and a processor configured to correct a feature of the obtained pulse wave signal based on a variation in an amplitude of the obtained pulse wave signal, and to measure bio-information based on the corrected feature.

Abstract: A bio-signal quality assessment apparatus may include: a bio-signal obtainer configured to obtain a bio-signal; and a processor configured to extract periodic signals from the obtained bio-signal, and determine a signal quality index based on at least one of similarity between the extracted periodic signals and signal variability of the obtained bio-signal.

Abstract: A blood pressure estimating apparatus includes a sensor configured to obtain a bio-signal of an object; and a processor configured to extract a first cardiovascular feature and a second cardiovascular feature based on the bio-signal, and estimate blood pressure based on a first changing tendency of the first cardiovascular feature from a first reference level and a second changing tendency of the second cardiovascular feature from a second reference level, the first changing tendency and the second changing tendency being independent from each other.

Abstract: A bio-information processing apparatus may include: a bio-signal measurer configured to measure a bio-signal; a bio-information receiver configured to receive first bio-information; and a processor configured to estimate second bio-information based on the bio-signal, and to correct the second bio-information based on measurement circumstances of the first bio-information and the second bio-information.