Apparatus, method, and medium of measuring skin hydration using mobile terminal
First Claim
1. An apparatus for measuring skin hydration, which is included in a mobile terminal, comprising:
- a voltage applying unit which receives a power from a power source included in the mobile terminal, and applies a single power source voltage to a measuring portion;
a current measuring unit which measures a current flowing through the measuring portion where the voltage is applied;
a voltage amplifier which receives the measured current through a resistor, and amplifies a voltage across the resistor;
a control unit which controls an output voltage of the voltage amplifier to be in a predetermined range; and
a calculating unit which calculates a susceptance of the measuring portion using the output voltage of the voltage amplifier, and calculates the skin hydration of the measuring portion using the calculated susceptance.
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Abstract
An apparatus, method, and medium of measuring skin hydration using a mobile terminal such as a cell phone are provided. The apparatus for measuring skin hydration, which is included in a mobile terminal, includes: a voltage applying unit which receives a power from a power source included in the mobile terminal, and applies a single power source voltage to a measuring portion; a current measuring unit which measures a current flowing through the measuring portion where the voltage is applied; a voltage amplifier which is input the measured current through a resistor, and amplifies a voltage across the resistor; a control unit which controls an output voltage of the voltage amplifier to be in predetermined range; and a calculating unit which calculates a susceptance of the measuring portion using the output voltage of the voltage amplifier, and calculates the skin hydration of the measuring portion using the calculated susceptance. Accordingly, skin hydration is measured using a single power source having a narrow voltage range used in a mobile terminal, so that a user can measure his or her skin condition at anytime and anyplace.
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Citations
27 Claims
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1. An apparatus for measuring skin hydration, which is included in a mobile terminal, comprising:
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a voltage applying unit which receives a power from a power source included in the mobile terminal, and applies a single power source voltage to a measuring portion;
a current measuring unit which measures a current flowing through the measuring portion where the voltage is applied;
a voltage amplifier which receives the measured current through a resistor, and amplifies a voltage across the resistor;
a control unit which controls an output voltage of the voltage amplifier to be in a predetermined range; and
a calculating unit which calculates a susceptance of the measuring portion using the output voltage of the voltage amplifier, and calculates the skin hydration of the measuring portion using the calculated susceptance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of measuring skin hydration using a mobile terminal, comprising:
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receiving a power from a power source included in the mobile terminal, and applying a single power source voltage to a measuring portion;
measuring a current flowing through the measuring portion where the voltage is applied;
amplifying a voltage across a resistor through which the measured current flows;
calculating a susceptance of the measuring portion using the amplified output voltage; and
calculating the skin hydration of the measuring portion using the calculated susceptance. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A mobile terminal for measuring hydration of a measuring portion of skin, comprising:
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a voltage applying unit which applies an AC voltage to the measuring portion of the skin to be measured;
a current measuring unit which measures a current flowing through the measuring portion of the skin;
a voltage amplifier which receives the measured current through a resistor, and amplifies a voltage corresponding to the measured current;
a control unit which controls the amplified voltage so that the amplified voltage does not exceed a maximum measurable voltage; and
a calculation unit which calculates a susceptance of the measuring portion using the amplified voltage, and calculating the skin hydration of the measuring portion using the calculated susceptance. - View Dependent Claims (19, 20)
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21. A method of measuring skin hydration of a measuring portion of skin using a mobile terminal, comprising:
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measuring a current flowing through a measuring portion where the voltage is applied;
calculating a susceptance of the measuring portion based on the measured current; and
calculating the skin hydration of the measuring portion using the calculated susceptance. - View Dependent Claims (22, 23, 24)
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25. At least one computer readable medium storing instructions that control at least one processor to perform a method comprising:
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measuring a current flowing through a measuring portion where the voltage is applied;
calculating a susceptance of the measuring portion based on the measured current; and
calculating the skin hydration of the measuring portion using the calculated susceptance. - View Dependent Claims (26, 27)
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Specification