Abstract: A pressure sensor includes at least one cantilever formed on an upper surface of a silicon substrate, a piezoresistor formed on a fixed end of the cantilever, and a metal wire and an electrode pad connected to both ends of the piezoresistor, wherein a stopper that limits a deformation of a free end of the cantilever is formed below the cantilever.

Abstract: Provided is an apparatus for measuring a biological signal. The apparatus includes a first surface having a first sensor which is attached to a predetermined part of a user's body and measures a first biological signal generated by the predetermined part; and a second surface having a second sensor which is attached to the user's finger and measures a second biological signal generated by the finger. Therefore, a user can easily check his or her health condition without being limited by time or place.

Abstract: Provided is a blood pressure measuring apparatus and a method of measuring blood pressure. The blood pressure measuring apparatus includes a plurality of blood pressure measuring units disposed on a substrate, a plurality of optical sensors disposed on the substrate to correspond to the blood pressure measuring units, and a control unit that measures blood pressure by analyzing signals received from the optical sensors and the blood pressure measuring units, wherein each of the blood pressure measuring units comprises a plurality of blood pressure sensors.

Abstract: A pressure sensor includes at least one cantilever formed on an upper surface of a silicon substrate, a piezoresistor formed on a fixed end of the cantilever, and a metal wire and an electrode pad connected to both ends of the piezoresistor, wherein a stopper that limits a deformation of a free end of the cantilever is formed below the cantilever.

Abstract: A photoplethysmography (PPG) sensor includes: a conductive member contacting with the skin of a user; a luminous element disposed on the conductive member to emit light towards the skin of the user through the conductive member; and a photo detector detecting the light emitted towards the skin of the user.

Abstract: A body fat measurement result providing method includes maintaining a body fat information database having stored therein at least one particular person's body fat information, which includes local body fat information for at least one body part of the at least one particular person, providing a user with a particular person list including the at least one particular person, and receiving a selection from the user of a first particular person selected from the particular person list, and generating a measurement result information by comparing the user's local body fat measured for at least one body part of the user, with corresponding local body fat information for the at least one body part of the first particular person.

Abstract: An apparatus for measuring a bio signal including a bio signal measurement unit, which is insertable into an ear to be in close contact with an internal surface of the ear, the bio signal measurement unit having a photo plethysmography (PPG) measurement module for radiating light of different wavelengths onto the internal surface of the ear, detecting light transmitted through the ear, and outputting a PPG signal including bio information, a control unit having a PPG signal processor for generating the bio information using the PPG signal measured by the PPG measurement module, and an output unit for displaying the bio information generated from the control unit.

Abstract: An apparatus, medium, and method for measuring body fat. The apparatus may include a current generating unit generating a current having a predetermined range of variable frequency and applying the current to a desired area in a human body to be measured, a detector unit detecting a voltage generated from the desired area in response to the current having a variable frequency and detecting a frequency value at which impedance of the desired area is changed based on relation between the detected voltage and the variable frequency, and a body fat calculating unit calculating body fat thickness based on the detected frequency value. It is possible to measure body fat thickness in any part of a human body by applying a variable frequency current to a desired area. Therefore, health and fatness management can be accomplished for each part of a human body.

Abstract: An apparatus and method for simultaneously measuring at least two different bio signals without interference are provided. The apparatus includes a stimulus signal generating unit generating the stimulus signal to be applied to a human body, a sensing unit contacting the human body, including a plurality of electrodes to which the stimulus signal is applied and from which at least one intermediate signal containing the first and second bio signals is detected, configured to share at least one of the plurality of electrodes to apply the stimulus signal or to detect each intermediate signal, and a signal acquisition unit separating and acquiring the first and second bio signals from each intermediate signal detected from the sensing unit.

Abstract: An apparatus for measuring a bio signal including a bio signal measurement unit, which is insertable into an ear to be in close contact with an internal surface of the ear, the bio signal measurement unit having a photo plethysmography (PPG) measurement module for radiating light of different wavelengths onto the internal surface of the ear, detecting light transmitted through the ear, and outputting a PPG signal including bio information, a control unit having a PPG signal processor for generating the bio information using the PPG signal measured by the PPG measurement module, and an output unit for displaying the bio information generated from the control unit.