Abstract: A health care apparatus and method are provided. The apparatus includes: a motion sensing unit; a bio-electric potential sensing unit sensing an electric potential signal of the health examinee corresponding to the sensed result; and an analysis unit analyzing the sensed result. By recognizing a current motion of the examinee and sensing an electric potential signal corresponding to the recognized current motion from the examinee, a more reliable health index of the examinee can be calculated. Even when information on the current motion of the health examinee is not given, the current motion can be recognized by the apparatus and method. Furthermore, since the health examinee is notified of the calculated health index in real time, the health examinee can be informed immediately if the physical condition is in an emergency state. As a result, the examinee can respond quickly to the emergency situation.

Abstract: A circuit and method for compensating for an electrode motion artifact in which the electrode motion artifact is generated because impedance between a subject and a measuring electrode changes during measurement of the subject's biosignal, and the electrode motion artifact can be differentially measured and an electrocardiogram signal can be compensated by introducing a predetermined voltage or an electric current to the subject. A circuit and method for compensating electrode motion artifact, which can differentially measure the difference information between impedance components by introducing a predetermined voltage or electric current to a subject, in association with the electrode motion artifact. In this instance, the impedance component is a component of electrode motion artifact and the electrode motion artifact is generated when measuring a biosignal.

Abstract: A circuit and method for compensating for an electrode motion artifact in which the electrode motion artifact is generated because impedance between a subject and a measuring electrode changes during measurement of the subject's biosignal, and the electrode motion artifact can be differentially measured and an electrocardiogram signal can be compensated by introducing a predetermined voltage or an electric current to the subject. A circuit and method for compensating electrode motion artifact, which can differentially measure the difference information between impedance components by introducing a predetermined voltage or electric current to a subject, in association with the electrode motion artifact. In this instance, the impedance component is a component of electrode motion artifact and the electrode motion artifact is generated when measuring a biosignal.

Abstract: A motion detector and method with low power consumption in an inertia sensor. The motion detector is selectively supplied with power for operation of the inertia sensor according to a power control signal. While the inertia sensor is supplied with power, three-dimensional analog signals are sampled, A/D converted, and outputted via a controller. A pulse width of the power control signal is determined by reflecting the sampling and A/D conversion period and reflecting the operation preparing period of the inertia sensor from the A/D converted value.

Abstract: A method of evaluating human stress using photoplethysmography (PPG) includes defining at least one PPG parameter, radiating light having at least one wavelength, which reacts to a blood component to be measured, at a measuring target and measuring a PPG signal from the measuring target during a predetermined period of time, and evaluating a level of human stress using a plurality of stress indexes obtained from the PPG parameter.

Abstract: A method and apparatus for monitoring a human activity pattern irrespective of the wearing position of the sensor unit by a user and a direction of the sensor unit are provided. The method for monitoring an inertia movement signal according to a movement of a user using a sensor unit attached to the user; detecting a direction of the sensor unit from the inertia movement signal; detecting a wearing location of the sensor unit by using acceleration and direction; determining the activity pattern of the user from inertia sensors; and delivering physical activity data corresponding to at least one caloric consumption, number of steps, and movement distance.

Abstract: A method and apparatus for counting the steps taken by a walker is provide. The method includes detecting an acceleration value generated by a step taken by a walker at every first stated interval, calculating a standard deviation of detected acceleration values at every second stated interval, determining a walking mode corresponding to the calculated standard deviation among first through Nth walking modes as a walking pattern of the walker, in which N is a positive integer that is larger than 1, checking if there is at least one absolute value that is larger than a threshold acceleration value corresponding to the determined walking mode among the absolute values of the detected acceleration values, and incrementing a count value as a step taken by the walker if there is at least one absolute value that is larger than the threshold acceleration value among the absolute values of the detected acceleration values.

Abstract: A health care apparatus and method are provided. The apparatus includes: a motion sensing unit; a bio-electric potential sensing unit sensing an electric potential signal of the health examinee corresponding to the sensed result; and an analysis unit analyzing the sensed result. By recognizing a current motion of the examinee and sensing an electric potential signal corresponding to the recognized current motion from the examinee, a more reliable health index of the examinee can be calculated. Even when information on the current motion of the health examinee is not given, the current motion can be recognized by the apparatus and method. Furthermore, since the health examinee is notified of the calculated health index in real time, the health examinee can be informed immediately if the physical condition is in an emergency state. As a result, the examinee can respond quickly to the emergency situation.

Abstract: A method and apparatus for counting the steps taken by a walker, where the method includes detecting an acceleration value generated by a step taken by a walker at every first stated interval, calculating a standard deviation of detected acceleration values at every second stated interval, determining a walking mode corresponding to the calculated standard deviation among first through Nth walking modes as a walking pattern of the walker, in which N is a positive integer that is larger than 1, checking if there is at least one absolute value that is larger than a threshold acceleration value corresponding to the determined walking mode among the absolute values of the detected acceleration values, and incrementing a count value as a step taken by the walker if there is at least one absolute value that is larger than the threshold acceleration value among the absolute values of the detected acceleration values.

Abstract: A method and apparatus for monitoring a human activity pattern irrespective of the wearing position of the sensor unit by a user and a direction of the sensor unit are provided. The method for monitoring an inertia movement signal according to a movement of a user using a sensor unit attached to the user; detecting a direction of the sensor unit from the inertia movement signal; detecting a wearing location of the sensor unit by using acceleration and direction; determining the activity pattern of the user from inertia sensors; and delivering physical activity data corresponding to at least one caloric consumption, number of steps, and movement distance.

Abstract: A body component concentration measuring apparatus, and method, for measuring a concentration of a body component in a measuring portion of a living body, includes a light source for emitting light, a diffraction grating being movable to disperse light emitted from the light source into light components having a plurality of wavelength bands, a shutter for controlling transmission of the light components having the plurality of wavelength bands, a lens for focusing the light components passing the shutter onto the measuring portion, and a detector for detecting the light components passing through the measuring portion.

Abstract: A method of evaluating human stress using photoplethysmography (PPG) includes defining at least one PPG parameter, radiating light having at least one wavelength, which reacts to a blood component to be measured, at a measuring target and measuring a PPG signal from the measuring target during a predetermined period of time, and evaluating a level of human stress using a plurality of stress indexes obtained from the PPG parameter.