Positional information correction device, touch sensor, positional information correction method, and program
First Claim
1. A positional information correction device, comprising:
- a positional information acquisition unit configured to acquire positional information showing a position of an operation body, the position being detected by a position detection unit, from a touch sensor that includes a plurality of first electrodes wired along a first direction, a plurality of second electrodes wired along a second direction that is approximately orthogonal to the first direction, and the position detection unit that detects the position of the operation body that approaches the first and second electrodes, based on capacitance on the first and second electrodes;
a capacitance value acquisition unit configured to acquire a capacitance value showing a value of the capacitance on the first and second electrodes from the touch sensor; and
a positional information correction unit configured to correct the positional information that is acquired by the positional information acquisition unit, by using a first correction function that includes a first periodic function having a first amplitude A1 of which a period is a wiring interval of the first electrodes and that corresponds to the capacitance value acquired by the capacitance value acquisition unit and a second correction function that includes a second periodic function having a second amplitude A2 of which a period is a wiring interval of the second electrodes and that corresponds to the capacitance value acquired by the capacitance value acquisition unit.
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Accused Products
Abstract
A positional information correction device includes a positional information acquisition unit configured to acquire positional information showing a position of an operation body, which is detected by a position detection unit, from a touch sensor that includes a plurality of first electrodes wired along a first direction, a plurality of second electrodes wired along a second direction, and the position detection unit that detects the position of the operation body that approaches the first and second electrodes, based on capacitance on the first and second electrodes, a capacitance value acquisition unit configured to acquire a capacitance value showing a value of the capacitance on the first and second electrodes from the touch sensor, and a positional information correction unit configured to correct the positional information by using a first correction function that includes a first periodic function and a second correction function that includes a second periodic function.
14 Citations
17 Claims
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1. A positional information correction device, comprising:
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a positional information acquisition unit configured to acquire positional information showing a position of an operation body, the position being detected by a position detection unit, from a touch sensor that includes a plurality of first electrodes wired along a first direction, a plurality of second electrodes wired along a second direction that is approximately orthogonal to the first direction, and the position detection unit that detects the position of the operation body that approaches the first and second electrodes, based on capacitance on the first and second electrodes; a capacitance value acquisition unit configured to acquire a capacitance value showing a value of the capacitance on the first and second electrodes from the touch sensor; and a positional information correction unit configured to correct the positional information that is acquired by the positional information acquisition unit, by using a first correction function that includes a first periodic function having a first amplitude A1 of which a period is a wiring interval of the first electrodes and that corresponds to the capacitance value acquired by the capacitance value acquisition unit and a second correction function that includes a second periodic function having a second amplitude A2 of which a period is a wiring interval of the second electrodes and that corresponds to the capacitance value acquired by the capacitance value acquisition unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 17)
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10. A touch sensor, comprising:
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a plurality of first electrodes that are wired along a first direction; a plurality of second electrodes that are wired along a second direction that is approximately orthogonal to the first direction; a capacitance detection unit configured to detect a value of capacitance on the first and second electrodes; a position detection unit configured to detect a position of an operation body that approaches the first and second electrodes, based on the value of capacitance that is detected by the capacitance detection unit; and a position correction unit configured to correct information of the position that is detected by the position detection unit, by using a first correction function that includes a first periodic function of which a period is a wiring interval of the first electrodes and that has a first amplitude corresponding to the value of the capacitance and a second correction function that includes a second periodic function of which a period is a wiring interval of the second electrodes and that has a second amplitude corresponding to the value of the capacitance. - View Dependent Claims (14)
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11. A positional information correction method, comprising:
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acquiring positional information showing a position of an operation body, the position being detected by a position detection unit, from a touch sensor that includes a plurality of first electrodes wired along a first direction, a plurality of second electrodes wired along a second direction that is approximately orthogonal to the first direction, and the position detection unit that detects the position of the operation body that approaches the first and second electrodes, based on capacitance on the first and second electrodes; acquiring a capacitance value showing a value of the capacitance on the first and second electrodes from the touch sensor; and correcting the positional information that is acquired in acquiring the positional information, by using a first correction function that includes a first periodic function having a first amplitude A1 of which a period is a wiring interval of the first electrodes and that corresponds to the capacitance value acquired in acquiring the capacitance value and a second correction function that includes a second periodic function having a second amplitude A2 of which a period is a wiring interval of the second electrodes and that corresponds to the capacitance value acquired in acquiring the capacitance value. - View Dependent Claims (15)
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12. A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to perform a method, the method comprising:
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acquiring positional information showing a position of an operation body, the position being detected by a position detection unit, from a touch sensor that includes a plurality of first electrodes wired along a first direction, a plurality of second electrodes wired along a second direction that is approximately orthogonal to the first direction, and the position detection unit that detects the position of the operation body that approaches the first and second electrodes, based on capacitance on the first and second electrodes; acquiring a capacitance value showing a value of the capacitance on the first and second electrodes from the touch sensor; and correcting the positional information that is acquired in acquiring the positional information, by using a first correction function that includes a first periodic function having a first amplitude A1 of which a period is a wiring interval of the first electrodes and that corresponds to the capacitance value acquired in acquiring the capacitance value and a second correction function that includes a second periodic function having a second amplitude A2 of which a period is a wiring interval of the second electrodes and that corresponds to the capacitance value acquired in acquiring the capacitance value. - View Dependent Claims (16)
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Specification