Abstract: A wrist-wearable body composition measuring device includes a main body; a strap connected to the main body; a first input electrode and a first output electrode which are provided on an inner surface of the strap and configured to contact a wrist of a subject; a second input electrode and a second output electrode which are provided on an outer surface of the strap; a measuring unit configured to measure a body impedance of the subject by applying current to the first input electrode and the second input electrode and detecting a voltage generated between the first output electrode and the second output electrode in response to the applied current; and a processor configured to analyze a body composition of the subject based on the body impedance measured by the measuring unit.

Abstract: An actuator according to an aspect of the present invention includes: a driving body including a plurality of conductive grains, a chamber configured to confine the plurality of conductive grains, and two or more electrodes disposed on a surface of the chamber, and a controller configured to obtain, through the two or more electrodes, a change in an electric signal, in response to a load applied to the chamber, and to adjust the load applied to the chamber based on the change in the electric signal.

Abstract: An apparatus and method for measuring a bioelectric impedance is provided. The apparatus may measure the bioelectric impedance using three electrodes. The apparatus may measure the bioelectric impedance by compensating for a change of a contact impedance.

Abstract: A mobile healthcare device and method of operating the same are provided. The method includes setting a mode of the mobile healthcare device to a measurement mode, displaying a screen for guiding a user to maintain a predetermined position during the measurement mode, and, in response to a predetermined amount of time passing from a time at which the screen begins to be displayed, obtaining state information of the user based on bio information of the user, the bio information being received from a sensor.

Abstract: Provided is a method of measuring body fat of a user, the method including: measuring a first impedance by using a 4-point measuring method; measuring a second impedance by using a 2-point measuring method; determining a bio impedance by using the first impedance and the second impedance; and determining a body fat percentage by using the bio impedance and body information of the user.

Abstract: A wrist-wearable body composition measuring device includes a main body; a strap connected to the main body; a first input electrode and a first output electrode which are provided on an inner surface of the strap and configured to contact a wrist of a subject; a second input electrode and a second output electrode which are provided on an outer surface of the strap; a measuring unit configured to measure a body impedance of the subject by applying current to the first input electrode and the second input electrode and detecting a voltage generated between the first output electrode and the second output electrode in response to the applied current; and a processor configured to analyze a body composition of the subject based on the body impedance measured by the measuring unit.

Abstract: Provided is a body composition analyzing apparatus by using an impedance of a half of an upper body. According to an example embodiment, the body composition analyzing apparatus includes a first electrode part which comes into contact with a half of an upper body of an object, a second electrode part which comes into contact with the half of the upper body, a measurer configured to apply a current to each of the electrode parts, and to measure an impedance of the half of the upper body of the object by measuring a voltage of each of the electrode parts, and an analyzer configured to analyze body composition of the object based on the measured impedance of the half of the upper body.

Abstract: A mobile healthcare device and method of operating the same are provided. The method includes setting a mode of the mobile healthcare device to a measurement mode, displaying a screen for guiding a user to maintain a predetermined position during the measurement mode, and, in response to a predetermined amount of time passing from a time at which the screen begins to be displayed, obtaining state information of the user based on bio information of the user, the bio information being received from a sensor.

Abstract: Provided is a wrist-type body component measuring apparatus. The wrist-type body component measuring apparatus includes: a band configured to be worn on a wrist of a user; a first input electrode and a first output electrode disposed on an inside surface of the band and configured to be in contact with the wrist of the user; a second input electrode and a second output electrode disposed on an outside surface of the band; a measuring unit configured to apply a current to the first and second input electrodes and detect a voltage from the first and second output electrodes to measure a body impedance of the user; and an electrode converter configured to convert a disposition of the first and second input electrodes and the first and second output electrodes based on a determination of whether the band is worn on a left wrist or a right wrist of the user.

Abstract: A bio-signal measuring apparatus includes a first electrode, a second electrode, a third electrode, a fourth electrode, and a first circuit network and a second circuit network, each of the first circuit network and the second circuit network includes one or more resistances. The bio-signal measuring apparatus further includes an impedance measurer configured to measure a first impedance of the first circuit network in a first correction mode, measure a second impedance of the second circuit network in a second correction mode, measure a third impedance of an object in a first measurement mode, using the first electrode, the second electrode, the third electrode, and the fourth electrode, and measure a fourth impedance of the object in a second measurement mode, using the first electrode, the second electrode, the third electrode, and the fourth electrode.

Abstract: A bio-information processing apparatus may include: a main body; a strap which is connected to both ends of the main body; an impedance measurer configured to measure a bio-impedance of a user while the main body and the strap are in contact with the user; and a processor configured to estimate a body water amount of the user by applying the measured bio-impedance to a body water estimation model.

Abstract: A wrist-wearable body composition measuring device includes a main body; a strap connected to the main body; a first input electrode and a first output electrode which are provided on an inner surface of the strap and configured to contact a wrist of a subject; a second input electrode and a second output electrode which are provided on an outer surface of the strap; a measuring unit configured to measure a body impedance of the subject by applying current to the first input electrode and the second input electrode and detecting a voltage generated between the first output electrode and the second output electrode in response to the applied current; and a processor configured to analyze a body composition of the subject based on the body impedance measured by the measuring unit.

Abstract: A mobile healthcare device and method of operating the same are provided. The method includes setting a mode of the mobile healthcare device to a measurement mode, displaying a screen for guiding a user to maintain a predetermined position during the measurement mode, and, in response to a predetermined amount of time passing from a time at which the screen begins to be displayed, obtaining state information of the user based on bio information of the user, the bio information being received from a sensor.

Abstract: A method of measuring a bio signal using a bio signal measuring apparatus includes: positioning electrodes included as part of the bio signal measuring apparatus to contact a surface of an examinee; switching an impedance measurer included as part of the bio signal measuring apparatus and including a voltmeter and a current source; measuring a first impedance value of the examinee while operating the impedance measurer according to a first mode; switching the impedance measurer to a second mode; measuring a second impedance value of the examinee while operating the impedance measurer according to a second mode; and obtaining bio impedance of the examinee based on the first and second impedance values and an internal impedance of the current source.

Abstract: A method of measuring a bio signal using a bio signal measuring apparatus includes: positioning electrodes included as part of the bio signal measuring apparatus to contact a surface of an examinee; switching an impedance measurer included as part of the bio signal measuring apparatus and including a voltmeter and a current source; measuring a first impedance value of the examinee while operating the impedance measurer according to a first mode; switching the impedance measurer to a second mode; measuring a second impedance value of the examinee while operating the impedance measurer according to a second mode; and obtaining bio impedance of the examinee based on the first and second impedance values and an internal impedance of the current source.

Abstract: Provided is a wrist-type body component measuring apparatus. The wrist-type body component measuring apparatus includes: a band configured to be worn on a wrist of a user; a first input electrode and a first output electrode disposed on an inside surface of the band and configured to be in contact with the wrist of the user; a second input electrode and a second output electrode disposed on an outside surface of the band; a measuring unit configured to apply a current to the first and second input electrodes and detect a voltage from the first and second output electrodes to measure a body impedance of the user; and an electrode converter configured to convert a disposition of the first and second input electrodes and the first and second output electrodes based on a determination of whether the band is worn on a left wrist or a right wrist of the user.

Abstract: An apparatus for measuring bioelectrical impedance includes a current source configured to apply a constant current to an object through a first electrode and a second electrode; a measurement mode switcher configured to switch a measurement mode from a first measurement mode to a second measurement mode in response to a measurement mode switch signal; a voltmeter configured to obtain a voltage applied to a third electrode and a fourth electrode due to the constant current applied to the object; and a processor configured to obtain first impedance based on a first voltage obtained by the voltmeter immediately before start of a measurement mode switch, obtain second impedance based on a second voltage obtained by the voltmeter immediately after completion of the measurement mode switch, and obtain bioelectrical impedance of the object based on the first impedance and the second impedance.

Abstract: An apparatus for measuring a biological component includes: light sources configured to emit light that irradiates a target object; one or more detectors configured to receive light from the target object that is irradiated by the light emitted by the light sources and to detect light signals corresponding to the light received from the target object; and a processor configured to determine an optimal light source for measuring a biological component, from among the light sources, based on the light signals detected by the one or more detectors and to measure a biological component of the target object using the optimal light source.

Abstract: A mobile healthcare device and method of operating the same are provided. The method includes setting a mode of the mobile healthcare device to a measurement mode, displaying a screen for guiding a user to maintain a predetermined position during the measurement mode, and, in response to a predetermined amount of time passing from a time at which the screen begins to be displayed, obtaining state information of the user based on bio information of the user, the bio information being received from a sensor.

Abstract: A body impedance measuring apparatus includes: a first module including a first input electrode and a first output electrode which are configured to contact a subject; a second module including a second input electrode and a second output electrode which are configured to contact the subject; a connection member configured to connect the first module to the second module and adjust a distance between the first module and the second module; and a measuring unit configured to apply a current to the first and second input electrodes, detect a voltage between the first and second output electrodes, and determine a body impedance of a subject based on the detected voltage. At least a component of the measuring unit is disposed in the first module and is electrically connected to the second module through the connection member.