CONTACT-SENSING DEVICE, MOBILE INFORMATION TERMINAL, AND CAPACITANCE CALIBRATION PROGRAM AND METHOD
First Claim
1. A contact-sensing device comprising:
- a capacitance contact-sensing unit including a plurality of contact-sensing areas configured to at least detect contact with an external object;
a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitances of the contact-sensing areas on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object;
a calibration determining unit configured to determine whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; and
a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out.
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0 Petitions
Accused Products
Abstract
A contact-sensing device includes a capacitance contact-sensing unit including contact-sensing areas configured to at least detect contact with an external object; a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitances of the contact-sensing areas on the basis of capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; a calibration determining unit configured to determine whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out.
20 Citations
10 Claims
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1. A contact-sensing device comprising:
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a capacitance contact-sensing unit including a plurality of contact-sensing areas configured to at least detect contact with an external object; a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitances of the contact-sensing areas on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; a calibration determining unit configured to determine whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out. - View Dependent Claims (2, 3, 4)
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5. A mobile information terminal comprising:
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a capacitance contact-sensing unit including a plurality of contact-sensing areas configured to at least detect contact with an external object; a terminal casing having the plurality of contact-sensing areas of the contact-sensing unit disposed on the outer surface; a signal processing unit configured to process a signal corresponding to the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; a calibration-value setting unit configured to set a calibration value used to calibrate capacitance values of the contact-sensing areas on the basis of capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; a calibration determining unit configured to determine whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit to be in contact with the external object; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out. - View Dependent Claims (6, 7, 8)
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9. A capacitance calibration program to operate a computer including a contact-sensing sensor, the contact-sensing sensor comprising:
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a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitance values of a plurality of contact-sensing areas on the basis of capacitances of the contact-sensing areas excluding the contact-sensing area detected to be in contact with the external object by a capacitance contact-sensing sensor having the plurality of contact-sensing areas and configured to detect at least the contact of an external object; a calibration determining unit configured to determine whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing sensor to be in contact with the external object; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out.
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10. A method of calibrating capacitance comprising the steps of:
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setting a calibration value to be used to calibrate capacitances of a plurality of contact-sensing areas by a calibration setting unit on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by a contact-sensing sensor having the plurality of contact-sensing areas and configured to detect at least the contact with an external object; determining by a calibration determining unit whether or not calibration of the capacitances of the contact-sensing areas is to be carried out on the basis of capacitance values of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing sensor to be in contact with the external object; and calibrating capacitances of all of the contact-sensing areas by a capacitance calibrating unit using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out by the calibration determining unit.
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Specification