KR101124945B1 - Apparatus and method for seittimg sensitivity of touch sensing portion in touch sensing device, and record media recorded program realizing the same - Google Patents

Abstract

A sensitivity setting method of the touch sensing unit is disclosed. According to a preferred embodiment of the present invention, in a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, the sensitivity of at least one touch sensing unit other than the reference touch sensing unit A method of setting a sensitivity, the method comprising: receiving a count value for at least one touch sensing unit other than the reference touch sensing unit, receiving the count value, a reference count value for the reference touch sensing unit, and The reference sensitivity setting value is used to calculate a sensitivity setting value for the touch sensing unit in which the count value is received.
According to the present invention, in consideration of the nonlinear relationship between the capacitance and the count value in the touch sensing unit, there is an advantage in that a sensitivity setting value can be assigned to each of the plurality of touch sensing units.

Description

Apparatus for setting the sensitivity of the touch sensing unit in the touch sensing device and a method thereof, and a recording medium recording a program for implementing the same.

An apparatus and method for setting a sensitivity of a touch sensing portion in a touch sensing apparatus, and a recording medium on which a program for implementing the same is recorded, and more particularly, in a touch sensing apparatus including a plurality of touch sensing units. The present invention relates to a sensitivity setting device of a touch sensing unit and a method thereof, and a recording medium on which a program for implementing the same is recorded.

Recently, a touch input device using a touch sensing device such as a touch sensing device exists and has been developed as an input means for controlling the operation of many electric / electronic devices.

In principle, the touch sensing device is a device that recognizes the touch itself, and the touch input device performs a touch sensing and outputs a sensed touch as a signal, which is used as an input means, but is actually used without any significant distinction.

The touch sensing device includes a resistive film, a pressure, an ultrasonic wave, and a capacitive type, and recently, a capacitive type is mainly used. The capacitive method can detect a touch using a change in capacitance generated by a user's touch.

As a method of detecting a change in capacitance, the amount of change in voltage accumulated according to the change in capacitance may be used, but recently, a method of generating a waveform corresponding to the capacitance and measuring a change in the frequency of the waveform is mainly used. It is used.

In detail, the touch sensing apparatus generates a waveform corresponding to the capacitance in the touch sensing unit, modulates the waveform into a clock signal, and counts the clock signal in a count enable period. Next, the touch value may be determined by comparing the count value with a preset threshold count value.

Such a touch sensing device may be designed to recognize a touch when the count value is greater than / over the boundary count value or to recognize the touch when the count value is less than / less than the boundary count value. However, for convenience of description, in the following, it is assumed that the touch sensing apparatus is designed to recognize a touch when the count value is less than or equal to the boundary count value.

Meanwhile, the touch sensing apparatus may include a plurality of touch sensing units. In this case, the plurality of touch sensing units should have the same sensitivity. However, there may be a difference in capacitance inherent in each of the plurality of touch sensing units (capacity in the touch sensing unit when there is no touch). Therefore, when the same boundary count value is assigned to each of the plurality of touch sensing units, the touch sensitivity may be different between the plurality of touch sensing units.

Conventionally, in order to solve such a problem, a different boundary count value is arbitrarily assigned to each touch sensing unit, but this is to overlook the characteristic of the count value which changes nonlinearly with the change of capacitance in the touch sensing unit. .

Therefore, a large error occurs when the boundary count value is assigned to each touch sensing unit, causing a large sensitivity difference between the touch sensing units.

The present invention has been made to solve the above problems, the sensitivity setting device and method of the touch sensing unit in the touch sensing apparatus that can minimize the error occurring when the boundary count value for each of the touch sensing unit is assigned, and It is an object of the present invention to provide a recording medium on which a program for realizing this is recorded.

Other objects of the present invention will be readily understood through the following description of the embodiments.

According to an aspect of the present invention to achieve the above object, a method for setting a sensitivity of the touch sensor is disclosed.

According to a preferred embodiment of the present invention, in a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, the sensitivity of at least one touch sensing unit other than the reference touch sensing unit A method of setting a sensitivity, the method comprising: receiving a count value for at least one touch sensing unit other than the reference touch sensing unit; And using the received count value, the reference count value for the reference touch sensing unit, and the reference sensitivity setting value, calculating a sensitivity setting value for the touch sensing unit in which the count value is received. A touch sensing unit sensitivity setting method is provided.

Here, the received count value may be a count value for the touch sensing unit in which the count value is received in a state in which there is no touch on the touch sensing unit in which the count value is received.

The reference count value may be a count value for the reference touch detector in a state in which there is no touch in the reference touch detector.

The reference sensitivity setting value may be a minimum count value change amount that may be recognized as a touch in the reference touch sensing unit.

The calculating of the sensitivity setting value for the touch sensing unit in which the count value is received may be performed by using the received count value, the reference count value for the reference touch sensing unit, and the reference sensitivity setting value. By multiplying a set value by the square of a value obtained by dividing the received count value by the reference count value.

According to another aspect of the present invention, a sensitivity setting device of the touch sensing unit is provided.

According to an exemplary embodiment of the present invention, in a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, setting the sensitivity of at least one touch sensing unit other than the reference touch sensing unit An apparatus comprising: an input unit for receiving a count value for at least one touch sensing unit other than the reference touch sensing unit; And a calculation unit configured to calculate a sensitivity setting value for the touch detection unit, in which the count value is received, using the received count value, the reference count value for the reference touch sensing unit, and a reference sensitivity setting value. A touch sensing unit sensitivity setting device is provided.

Here, the received count value may be a count value for the touch sensing unit in which the count value is received in a state in which there is no touch on the touch sensing unit in which the count value is received.

The reference count value may be a count value for the reference touch detector in a state in which there is no touch in the reference touch detector.

The reference sensitivity setting value may be a minimum count value change amount that may be recognized as a touch in the reference touch sensing unit.

The calculator may calculate the sensitivity setting value for the touch sensing unit in which the count value is received by multiplying the reference sensitivity setting value by a square of a value obtained by dividing the received count value by the reference count value. Can be.

According to another aspect of the invention, there is provided a recording medium recording a program for implementing a sensitivity setting method of the touch sensing unit.

According to an exemplary embodiment of the present invention, in a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, setting the sensitivity of at least one touch sensing unit other than the reference touch sensing unit A recording medium having recorded thereon a program for implementing a method, the method comprising: receiving a count value for at least one touch sensing unit other than the reference touch sensing unit; And using the received count value, the reference count value for the reference touch sensing unit, and the reference sensitivity setting value, calculating a sensitivity setting value for the touch sensing unit in which the count value is received. Provided is a recording medium recording a program for implementing a method for setting a sensitivity of a touch sensor.

Here, the received count value may be a count value for the touch sensing unit in which the count value is received in a state in which there is no touch on the touch sensing unit in which the count value is received.

The reference count value may be a count value for the reference touch detector in a state in which there is no touch in the reference touch detector.

The reference sensitivity setting value may be a minimum count value change amount that may be recognized as a touch in the reference touch sensing unit.

The calculating of the sensitivity setting value for the touch sensing unit in which the count value is received may be performed by using the received count value, the reference count value for the reference touch sensing unit, and the reference sensitivity setting value. By multiplying a set value by the square of a value obtained by dividing the received count value by the reference count value.

As described above, according to the apparatus for setting the sensitivity of the touch sensing unit and a method thereof, and a recording medium on which a program for implementing the same is recorded in the touch sensing apparatus according to the present invention, a non-linearity between the capacitance and the count value in the touch sensing unit is provided. In consideration of the proper relationship, there is an advantage that the sensitivity setting value can be assigned to each of the plurality of touch sensing units.

In addition, according to the touch sensing device according to the present invention, the sensitivity setting device of the touch sensing unit and a method thereof, and a recording medium having a program for implementing the same, record the sensitivity of each touch sensing unit using a count value of each touch sensing unit. There is an advantage that can be set using an algorithm that calculates automatically.

In addition, according to the apparatus for setting a sensitivity of the touch sensing unit and a method thereof, and a recording medium in which a program for implementing the same is recorded in the touch sensing apparatus according to the present invention, when the sensitivity of one touch sensing unit is set, the rest of the touch is detected. There is an advantage that the boundary count value can be set such that the sensing unit has the same sensitivity.

1 is a functional block diagram of a touch sensing apparatus according to a preferred embodiment of the present invention.
2 illustrates a structure of the storage unit of FIG. 1.
3 is a capacitance-count value graph of a touch sensing unit having a linear relationship.
4 is a capacitance-count value graph of a touch sensing unit having a nonlinear relationship.
5 is a capacitive-count value graph of a touch sensor for explaining a method of allocating a touch sensor sensitivity setting value according to an exemplary embodiment of the present invention.
6 is a functional block diagram of a touch sensing unit sensitivity setting device according to an exemplary embodiment of the present invention.
7 is a flowchart illustrating a process of setting a sensitivity of a touch sensor according to an exemplary embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals are used for like elements in describing each drawing. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, the structure and operation of the touch sensing apparatus according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a functional block diagram of a touch sensing apparatus according to a preferred embodiment of the present invention. 2 illustrates a structure of the storage unit of FIG. 1.

First, referring to FIG. 1, a touch sensing apparatus 1 according to an exemplary embodiment of the present invention may include a touch unit 10, an oscillator 20, a clock generator 30, a count unit 40, and a touch determiner. 50 and the storage unit 60 may be included.

The touch unit 10 is an area where a user's touch of the touch sensing device is made, and the plurality of touch sensing units 10-1, 10-2, 10-3,..., 10-n, n> 3 are integers. It may include. The plurality of touch sensing units may have inherent capacitance. Here, the term “capacitive inherent in the touch sensing unit” means “capacitance in the touch sensing unit in a state where the touch sensing unit is in a normal state and there is no external stimulus to the touch sensing unit”. That is, the "capacitive inherent in the touch sensing unit" means the capacitance in the touch sensing unit in the absence of a touch. Here, the present invention does not limit the number of touch sensing units. That is, two or more touch sensing units may fall within the scope of the present invention.

The oscillator 20 may generate a waveform reflecting the capacitance of the touch sensing units 10-1, 10-2, 10-3,..., 10-n, n> 3. The oscillator 20 may be an RC oscillator connected to the touch sensing units 10-1, 10-2, 10-3,..., 10-n, n> 3. The oscillator 20 is a waveform whose frequency is varied according to the change in capacitance in the touch sensing units 10-1, 10-2, 10-3, ..., 10-n, n> 3 Can be generated. That is, when the user's touch is made to increase the capacitance in the touch sensing units 10-1, 10-2, 10-3, ..., 10-n, n> 3, the frequency is low. When a waveform is output and a user's touch is not made, a waveform with a high frequency can be generated. Here, the present invention does not limit the oscillation unit 20, but the capacitance of the touch sensing units 10-1, 10-2, 10-3, ..., 10-n, n> 3 Generating a waveform whose frequency is changed according to the change may belong to the oscillator 20 of the present invention.

The clock generator 30 may modulate the waveform output from the oscillator 20 into a clock.

The counter 40 may receive a clock from the clock generator 30 and count the clock in the count enable period.

The touch determination unit 50 may receive a count value from the count unit 40 and compare it with the boundary count value stored in the storage unit 60. Specifically, when the count value received from the counting unit 40 is less than or equal to the boundary count value, the touch determination unit 50 may recognize that a touch has occurred, and the count value received from the counting unit 40 exceeds the boundary count value. In this case, it can be recognized that no touch has occurred. When the touch determination unit 50 recognizes that a touch has occurred, the touch determination unit 50 may generate control information of an electric device connected to the touch sensing device by outputting a predetermined touch signal to the outside.

The oscillator 20, the clock generator 30, the counter 40, and the touch determiner 50 as described above may include the touch detectors 10-1, 10-2, 10-3, ..., 10-n. , n> 3) may be provided for each. However, in order to miniaturize the touch sensing apparatus, the touch sensing apparatus 1 includes an oscillator 20, a clock generator 30, a counter 40, and a touch determiner 50, each of which is touched by time division. It is preferable to sense each of the sensing units 10-1, 10-2, 10-3, ..., 10-n, n> 3.

The storage unit 60 may store the boundary count value used by the touch determination unit 50 to determine whether the touch has occurred. Referring to FIG. 2, the storage unit 60 has a boundary count value TH1 for each of the touch sensing units 10-1, 10-2, 10-3,..., 10-n, and n> 3. , TH2, TH3, ..., THn, an integer of n> 3). When the touch determination unit 50 determines whether each of the touch detection units 10-1, 10-2, 10-3,..., 10-n, n> 3 is touched, the touch determination target touch The boundary count value of the detector may be used.

Hereinafter, the sensitivity of the touch sensing unit will be described in detail with reference to FIGS. 1, 3, and 4.

3 is a capacitance-count value graph of a touch sensing unit having a linear relationship. 4 is a capacitance-count value graph of a touch sensing unit having a nonlinear relationship.

First, referring to FIG. 3, the horizontal axis C refers to the capacitance of the touch sensing unit, and the vertical axis CNT refers to the count value of the touch sensing unit. It can be seen that the capacitance and the count value in the touch sensor are in a linear relationship.

C1 on the horizontal axis represents intrinsic capacitance of the touch sensing unit 10-1, and C2 represents intrinsic capacitance of the touch sensing unit 10-2. CNT1 represents a count value corresponding to the inherent capacitance C1 of the touch sensing unit 10-1, and CNT2 represents a count value corresponding to the inherent capacitance C2 of the touch sensing unit 10-2. Indicates. Here, THD1 (THD: Threshold Delta value) is assigned to the touch sensing unit 10-1 as a sensitivity setting value, and THD2 (THD2 = THD1) as a sensitivity setting value to the touch sensing unit 10-2. Was assigned. Here, the "sensitivity setting value" means the minimum amount of change in the count value that can be recognized as the touch sensing unit. In addition, the "boundary count value" is a value obtained by subtracting a sensitivity setting value assigned to the touch sensing unit from a count value corresponding to the capacitance inherent in the touch sensing unit. That is, the threshold count value for the touch sensing unit 10-1 may be TH1 (TH: Threshold value), and the threshold count value for the touch sensing unit 10-2 may be TH2. Here, Cx means a minimum amount of change in capacitance in the touch sensing units 10-1 and 10-2 that can be recognized by the touch sensing units 10-1 and 10-2. In order for the touch sensing units 10-1 and 10-2 to have the same sensitivity, when the touch sensing units 10-1 and 10-2 have the same capacitance change Cx, the touch determination unit 50 is used. Should be able to determine that a touch has occurred in the touch sensing units 10-1 and 10-2. When there is a change in capacitance by Cx in the touch sensing units 10-1 and 10-2, the amount of change in the count value in the touch sensing units 10-1 and 10-2 may be the same. This is because the change in the count value according to the change in capacitance in the touch sensing units 10-1 and 10-2 has a linear relationship. Therefore, even when the intrinsic capacitance of each of the touch sensing units 10-1 and 10-2 is different, the same sensitivity setting value THD1 can be assigned to each of the touch sensing units 10-1 and 10-2. Do.

However, in the actual touch sensing device, the capacitance and the count value in the touch sensing unit have a non-linear relationship. This will be described in detail with reference to FIG. 4. In FIG. 4, the same characters as in FIG. 3 have the same meaning. For example, C1 on the horizontal axis of FIG. 4 means an inherent capacitance of the touch unit 10-1.

Referring to FIG. 4, it can be seen that the capacitance and the count value in the touch sensing unit have a non-linear relationship in the actual touch sensing apparatus. The count value in the touch detector is inversely proportional to the square of the capacitance in the touch detector. In this case, when the same sensitivity setting value THD1 is assigned to each of the touch sensing units 10-1 and 10-2, a sensitivity difference may occur between the touch sensing units 10-1 and 10-2. That is, when the touch determining unit 50 has a change Cx 'smaller than Cx in the touch sensing unit 10-2, it may be determined that the touch has occurred in the touch sensing unit 10-2. . This is because the decrease rate of the count value corresponding to the capacitance increases as the capacitance in the touch sensing unit becomes smaller. Therefore, when the capacitance and the count value are in a non-linear relationship and there is a difference between the intrinsic capacitances of the touch sensing units, the sensitivity setting values assigned to the touch sensing units must be different in order to have the same sensitivity between the touch sensing units.

Hereinafter, a method of assigning a sensitivity setting value of a touch sensor according to the present invention will be described with reference to FIG. 5.

5 is a capacitive-count value graph of a touch sensor for explaining a method of allocating a touch sensor sensitivity setting value according to an exemplary embodiment of the present invention. In FIG. 5, the same characters as in FIG. 4 have the same meaning. For example, C1 on the horizontal axis of FIG. 5 means an inherent capacitance of the touch unit 10-1. In FIG. 5, C3 represents an intrinsic capacitance of the touch sensing unit 10-3, CNT3 represents a count value corresponding to an intrinsic capacitance of the touch sensing unit 10-3, and THD3 represents a touch sensing unit 10-3. ), And a sensitivity set value, and TH3 means a boundary count value for the touch sensing unit 10-3.

As described above, in order for the sensitivity to be the same among the touch sensing units 10-1, 10-2, and 10-3, the touch determining unit 50 may include the touch sensing units 10-1, 10-2, and 10-. If there is a minimum change in capacitance Cx that can be recognized as a touch in 3), the touch sensing units 10-1, 10-2, and 10-3 should be able to recognize that there is a touch. That is, the count value THD1 corresponding to the capacitance C1 ′ in which the intrinsic capacitance C1 of the touch sensor 10-1 is added to Cx is equal to the boundary count value of the touch sensor 10-1. To this end, the touch sensing unit 10-1 should be assigned THD1 as a sensitivity setting value. In addition, the count value THD2 corresponding to the capacitance C2 'obtained by adding Cx to the inherent capacitance C2 of the touch detector 10-2 is equal to the boundary count value of the touch detector 10-2. To this end, the touch sensing unit 10-2 should be assigned THD2 as a sensitivity setting value. In addition, the count value THD3 corresponding to the capacitance C3 'obtained by adding Cx to the inherent capacitance C3 of the touch sensing unit 10-3 is the boundary count value of the touch sensing unit 10-3. To this end, the touch sensing unit 10-3 should be assigned THD3 as a sensitivity setting value.

When the sensitivity setting values are allocated as described above, as shown in FIG. 5, the sensitivity setting values THD1, THD2, and THD3 may be allocated to the touch sensing units 10-1, 10-2, and 10-3, respectively. have. Specifically, the smaller the intrinsic capacitance of the touch sensing units 10-1, 10-2, and 10-3, that is, the intrinsic capacitance of the touch sensing units 10-1, 10-2, and 10-3. As the corresponding count value increases, larger sensitivity setting values THD1, THD2, and THD3 may be assigned to each of the touch sensing units 10-1, 10-2, and 10-3. Based on these results, it can be seen that as the count value corresponding to the capacitance inherent to the touch sensor is larger, a larger sensitivity setting value should be assigned to the touch sensor.

In FIG. 5, when the touch sensing unit 10-1 is referred to as a reference, the count value CNT2 corresponding to the capacitance C2 inherent to the touch sensing unit 10-2 is determined by the touch sensing unit 10-1. The sensitivity setting value THD2, which is approximately twice the count value CNT1 corresponding to the intrinsic capacitance C1, and should be assigned to the touch sensing unit 10-2, should be allocated to the touch sensing unit 10-1. It can be seen that approximately 4 times the sensitivity setting value THD1.

Here, it can be seen that THD2 = THD1 * (CNT2 / CNT1) ^ 2.

The count value CNT3 corresponding to the capacitance C3 inherent to the touch sensing unit 10-3 is equal to the count value CNT1 corresponding to the capacitance C1 inherent in the touch sensing unit 10-1. It is about 0.7 times and it can be seen that the sensitivity setting value THD3 to be assigned to the touch sensing unit 10-3 is approximately 0.5 times the sensitivity setting value THD1 to be allocated to the touch sensing unit 10-1.

Here, it can be seen that THD3 = THD1 * (CNT3 / CNT1) ^ 2.

Generalizing the above results is as follows.

Touch Sensing Unit 10-1 Touch sensing unit 10-2 Touch sensor (10-3) Count value corresponding to the capacitance inherent in the touch sensing unit CNT1 CNT2 = M * CNT1 CNT3 = N * CNT2 = N * (M * CNT1) Count value assigned to touch detector THD1 THD2 = M ^ 2 * (THD1) = (CNT2 / CNT1) ^ 2 * (THD1) THD3 = N ^ 2 (THD2) = N ^ 2 ((CNT2 / CNT1) ^ 2 * (THD1))

That is, if the count value and the sensitivity setting value for any one touch sensing unit are known, the sensitivity setting value to be assigned to the other touch sensing unit to have the same sensitivity as the touch sensing unit can be known by the following equation. have. Hereinafter, the sensitivity setting value for the touch detection unit having a known sensitivity setting value is a “reference sensitivity setting value” and a count value corresponding to an inherent capacitance of the touch detection unit having a sensitivity setting value known. Is referred to as the “reference count value”.

[Equation 1]

THDx = THD0 * (CNTx / CNT0) ^ 2 (THD0: Reference sensitivity setting value, CNT0: Reference count value, CNTx: Count value corresponding to the inherent capacitance of the touch sensing unit whose sensitivity setting is unknown, THDx: Reference sensitivity Sensitivity setting value that should be assigned to the touch detection unit whose sensitivity setting value is unknown so that the setting value has the same sensitivity as the assigned touch detection unit). The information may be arbitrarily set for the above operation.

Here, the sensitivity setting value may be calculated only by division / multiplication, as in the following equation, without calculating the square power.

[Equation 2]

THDx = (((THD0 / CNT0) * CNTx) / CNT0 * CNTx)

Hereinafter, referring to FIG. 6, a touch sensing unit sensitivity setting device according to the present invention will be described in detail.

6 is a functional block diagram of a touch sensing unit sensitivity setting device according to an exemplary embodiment of the present invention.

The touch sensing unit sensitivity setting apparatus 100 according to an exemplary embodiment of the present invention may include an input unit 110 and a calculator 120.

The input unit 110 may receive a count value corresponding to a capacitance specific to the touch sensor to which the sensitivity setting value to be calculated is to be assigned a) reference count value b) reference sensitivity setting value to be calculated. .

As long as the input unit 110 can obtain a), b), and c), the method of obtaining the input unit 110 is not limited. That is, the input unit 110 may receive the above a), b), c) by the manual input of the operator of the touch sensor sensitivity setting device. In addition, the input unit 110 may read a) and b) stored in a memory (not shown), and may receive only c) by manual input by an operator of the touch sensor sensitivity setting device. Alternatively, the input unit 110 may read b) stored in a memory (not shown), and a) and c) may be input through the count unit 40.

The calculation unit 120 determines, from the input unit 110, a) a reference count value CNT0 b) a reference sensitivity setting value THD0 c) a count value corresponding to the capacitance inherent to the touch sensor to which the sensitivity setting value to be calculated is to be assigned. Receive (CNTx) to calculate sensitivity setting value.

The operation method is as shown in Equation 1 above. In other words, by multiplying b) by the square of the value of c) divided by a), the sensitivity setting value to be assigned for the same sensitivity can be calculated.

Then, as shown in Equation 3, the boundary count value can be set as follows by subtracting the calculated sensitivity setting value from the count value of the touch sensing unit to which the calculated sensitivity setting value is assigned.

[Equation 3]

THx = CNTx-THDx (THDx: Sensitivity setting that should be assigned to the touch sensing unit where the sensitivity setting is unknown, so that the reference sensitivity setting has the same sensitivity. CNTx: Sensitivity setting Count value corresponding to the inherent capacitance of the unknown touch sensor, THx: Boundary count value of the touch sensor to which the sensitivity setting value is assigned)

The calculation of Equation 3 may be automatically performed by the calculating unit 120.

According to the touch sensing unit sensitivity setting device 100 of the present invention, a sensitivity setting value may be assigned to each of the plurality of touch sensing units so that the sensitivity of the plurality of touch sensing units is the same. However, compared with the ideal case, the assigned sensitivity setting value may have some errors depending on the touch sensing device, for example, the manufacturer of the touch sensing device. However, the error is remarkably small compared with the error generated when the sensitivity setting value is arbitrarily assigned, and is very small compared with the case where the same sensitivity setting value is assigned to the plurality of touch sensing units.

Hereinafter, a method of setting a sensitivity of the touch sensor according to the present invention will be described with reference to FIGS. 6 and 7.

7 is a flowchart illustrating a process of setting a sensitivity of a touch sensor according to an exemplary embodiment of the present invention.

Referring to FIG. 7, first, the input unit 110 may receive a reference sensitivity setting value, a reference count value, and a count value corresponding to an electrostatic capacitance inherent in the touch sensor to which the calculated sensitivity setting value is to be allocated ( S71).

Next, the operation unit 120 sets the sensitivity to be allocated using the reference sensitivity setting value received in S71, the reference count value, and a count value corresponding to the capacitance specific to the touch sensor to which the sensitivity setting value to be calculated is assigned. The value can be calculated (S72).

Here, the operation unit 120 multiplies the reference sensitivity setting value by the square of a value obtained by dividing the count value corresponding to the capacitance inherent in the touch sensor to which the sensitivity setting value to be calculated is divided by the reference count value. The set value can be calculated.

The calculation is performed by 1) dividing the reference sensitivity setting value by the reference count value, 2) multiplying the count value corresponding to the capacitance inherent to the touch sensor to which the sensitivity setting value to be calculated is assigned to the result of 1), and 3) The result may be divided by a reference count value and multiply the count value corresponding to the capacitance of the touch sensing unit to be assigned to the sensitivity setting value calculated in the result of 4) 3).

The calculator 120 may set a boundary count value by subtracting the sensitivity setting value calculated as described above from a count value corresponding to the capacitance inherent in the touch sensor to which the calculated sensitivity setting value is assigned. By the above method, the sensitivity may be the same between the plurality of touch units.

Meanwhile, the method for setting the sensitivity of the touch sensor according to the present invention may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

1: touch sensing device
10: touch unit 20: oscillation unit
30: clock generation unit 40: counting unit
50: touch determination unit 60: storage unit
100: touch sensing unit sensitivity setting device
110: input unit 120: calculation unit

Claims (11)

In a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, a method of setting sensitivity of at least one touch sensing unit other than the reference touch sensing unit,
Receiving a count value corresponding to an intrinsic capacitance for at least one touch sensing unit other than the reference touch sensing unit; And
Using the count value corresponding to the received inherent capacitance, the reference count value corresponding to the inherent capacitance for the reference touch sensing unit, and the reference sensitivity setting value, the count value corresponding to the intrinsic capacitance is And calculating a sensitivity setting value for the received touch sensing unit.
The method of claim 1,
The received count value is a touch sensor sensitivity setting method, characterized in that the count value is a count value for the received touch sensor in a state in which there is no touch on the touch sensor received the count value.
The method of claim 1,
And the reference count value is a count value for the reference touch detector in a state where there is no touch on the reference touch detector.
The method of claim 1,
The reference sensitivity setting value is a touch sensor sensitivity setting method, characterized in that the minimum amount of change in the value that can be recognized that the touch has occurred in the reference touch sensor.
The method of claim 1,
Using the received count value, the reference count value for the reference touch sensing unit, and the reference sensitivity setting value, calculating the sensitivity setting value for the touch sensing unit in which the count value is received,
And multiplying the reference sensitivity setting value by a square of a value obtained by dividing the received count value by the reference count value.
In the touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, Apparatus for setting the sensitivity of at least one touch sensing unit other than the reference touch sensing unit,
An input unit configured to receive a count value corresponding to an inherent capacitance for at least one touch sensor other than the reference touch sensor; And
Using the count value corresponding to the received inherent capacitance, the reference count value corresponding to the inherent capacitance for the reference touch sensing unit, and the reference sensitivity setting value, the count value corresponding to the intrinsic capacitance is And a calculator configured to calculate a sensitivity setting value for the received touch detector.
The method according to claim 6,
The received count value is a touch sensor sensitivity setting device, characterized in that the count value is a count value for the touch sensing unit, the touch value in the state in which the touch sensing unit received the count value.
The method according to claim 6,
And the reference count value is a count value for the reference touch detector in a state in which there is no touch in the reference touch detector.
The method according to claim 6,
The reference sensitivity setting value is a touch sensing unit sensitivity setting device, characterized in that the minimum amount of change value that can be recognized that the touch occurs in the reference touch sensing unit.
The method according to claim 6,
The calculating unit calculates a sensitivity setting value for the touch sensing unit in which the count value is received by multiplying the reference sensitivity setting value by a square of a value obtained by dividing the received count value by the reference count value. Touch sensor sensitivity setting device.
In a touch sensing device including a reference touch sensing unit and at least one touch sensing unit other than the reference touch sensing unit, a program is recorded to implement a method for setting a sensitivity of at least one touch sensing unit other than the reference touch sensing unit. In the medium,
Receiving a count value corresponding to an inherent capacitance for at least one touch sensing unit other than the reference touch sensing unit; And
Using the count value corresponding to the received inherent capacitance, the reference count value corresponding to the inherent capacitance for the reference touch sensing unit, and the reference sensitivity setting value, the count value corresponding to the intrinsic capacitance is And calculating a sensitivity setting value for the received touch sensing unit.

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