TWI646456B - Capacitive touch object separation method - Google Patents

Abstract

The invention is a method for separating a capacitive touch object, which is performed by a touch device having a touch interface. The touch device detects whether the touch interface generates a touch signal. When a touch signal is generated, the energy volume of the touch signal is calculated. When the energy volume of the touch signal exceeds a critical value, the touch is determined. The control signal is a first touch object signal; when the energy volume of the touch signal does not exceed a threshold value, the touch signal is determined to be a second touch object signal; the touch device determines different touch according to the above method The touch signals generated by the objects further generate different touch responses, thereby increasing the application diversity and improving the operation efficiency.

Description

Capacitive touch object separation method

The invention relates to a method for separating a touch object, in particular to a method for separating a capacitive touch object.

Touch devices are an operating interface that is very common in modern life. The touch device, such as a smart phone, a tablet, or a touch-enabled electronic whiteboard, includes a touch interface. The touch device touches the touch interface. The touch device determines whether the touch interface has a touch interface. Touch the point and detect the position of the touch point and the direction of movement. The touch device performs an operation editing application for the user to touch the touch interface through the touch medium to operate the touch device, such as selecting different options, writing text, graphic drawing, and the like. The touch medium is generally a stylus or a user's finger.

In the existing touch device technology, when the touch interface is touched by using different touch media, the touch device determines that it is a touch point and performs the same touch function; that is, regardless of the use Using a stylus or a finger to directly touch the touch screen, the touch device is determined to be a touch point, and the touch device cannot distinguish the touch point by a touch pen or a finger The touch limits the multiple applications of the user when operating the touch device using different touch media.

Further, the function switching or mode switching of the existing touch device is performed through a function list, which is generally disposed somewhere in the touch interface, for example, the periphery of the touch interface, when the user needs to perform functions. Switching or mode switching, you must leave the original usage screen to switch. For example, when the user is in a handwritten editing screen, the handwritten text must be switched at the touch. To control the thickness of the interface, you must operate the touch media to select the function list, then click the desired stroke thickness, and then return to the original text editing screen for text editing. In the process of text editing, it is necessary to repeat the operation in this way, resulting in inconvenience in use.

In view of the existing touch device technology, the touch signal generated by the touch object touches on the touch interface cannot be separated, and the present invention provides a method for separating the capacitive touch object. The method for separating the capacitive touch object is performed by a touch device having a touch interface. The method for separating the capacitive touch object includes the following steps: scanning the touch interface at a scan frequency to determine Whether the touch interface generates a touch signal; when determining the touch signal, calculating the energy volume of the touch signal; determining whether the energy volume of the touch signal exceeds a critical value; and when the energy volume of the touch signal is When the threshold value is exceeded, the touch signal is determined to be a first touch object signal; when the energy volume of the touch signal does not exceed the threshold value, the touch signal is determined to be a second touch object signal.

According to the energy volume of the touch signal, the touch device can determine that the touch signal is generated by a first touch object signal or a second touch object signal, and can perform different touch operations according to the second touch object. The response increases the multi-application of the user's use. According to the touch object separation method, the user can use the two different touch objects to perform the touch, and the user can reduce the function list by repeating the function. Therefore, it is necessary to leave the original operation screen, which may cause inconvenience in use.

10‧‧‧ touch device

11‧‧‧ Touch interface

111‧‧‧Touch detection point

21‧‧‧First touch object signal

22‧‧‧Second touch object signal

31‧‧‧First line

32‧‧‧second line

40‧‧‧Virtual Laser Point

50‧‧‧ handwriting lines

60‧‧‧Function List

1 is a schematic flow chart of a preferred embodiment of a method for separating a capacitive touch object of the present invention.

2 is a schematic flow chart of a preferred embodiment of a method for separating a capacitive touch object of the present invention.

3 is a schematic diagram of a touch interface of a method for separating a capacitive touch object according to the present invention.

FIG. 4 is a schematic diagram of an energy volume calculation process of the method for separating a capacitive touch object according to the present invention.

FIG. 5 is a schematic view showing the state of use of the second touch object according to the method for separating the capacitive touch object of the present invention.

FIG. 6 is a schematic view showing the state of use of the first touch object according to the method for separating the capacitive touch object of the present invention.

FIG. 7 is a schematic flow chart of another preferred embodiment of a method for separating a capacitive touch object according to the present invention.

FIG. 8 is a schematic flow chart of a handwriting editing mode of another preferred embodiment of the method for separating a capacitive touch object according to the present invention.

FIG. 9 is a schematic diagram showing the state of use of the handwriting editing mode of another preferred embodiment of the method for separating the capacitive touch object of the present invention.

FIG. 10 is a schematic flow chart of a brief mode of another preferred embodiment of a method for separating a capacitive touch object according to the present invention.

FIG. 11 is a schematic diagram showing the state of use of the briefing mode of another preferred embodiment of the method for separating the capacitive touch object of the present invention.

FIG. 12 is a schematic view showing the state of use of the third preferred embodiment of the method for separating the capacitive touch object of the present invention.

FIG. 13 is a schematic view showing the state of use of the fourth preferred embodiment of the method for separating the capacitive touch object of the present invention.

FIG. 14 is a schematic flow chart of a fifth preferred embodiment of a method for separating a capacitive touch object according to the present invention.

FIG. 15 is a schematic flow chart of a sixth preferred embodiment of a method for separating a capacitive touch object according to the present invention.

FIG. 16 is a schematic flow chart showing the use of the sixth preferred embodiment of the method for separating a capacitive touch object according to the present invention.

17 is a schematic view showing the state of use of the sixth preferred embodiment of the method for separating the capacitive touch object of the present invention.

FIG. 18 is a schematic flow chart of a seventh preferred embodiment of a method for separating a capacitive touch object according to the present invention.

The method for separating the capacitive touch object of the present invention is performed by a touch device 10, and the touch device 10 includes a touch interface 11. As shown in FIG. 1 , the method for separating the capacitive touch object includes the following steps: scanning the touch interface at a scan frequency to determine whether the touch interface 11 generates a touch signal (S101); a touch signal, calculating an energy volume of the touch signal (S102); determining whether the energy volume of the touch signal exceeds a threshold (S103); when the energy volume of the touch signal exceeds the threshold, determining the touch The control signal is a first touch object signal 21 (S104). When the energy volume of the touch signal does not exceed the threshold, the touch signal is determined to be a second touch object signal 22 (S105).

The touch device 10 generates a touch signal having a different energy volume when the touch object touches the touch interface 11 , and the touch device 10 determines the energy volume of the touch signal according to the above steps. The touch signal is generated by the touch object or the second touch object to achieve the purpose of separating the touch object, and further performing different operation reactions.

Referring to FIG. 2, in a preferred embodiment of the present invention, when the touch device 10 determines that the touch signal is the first touch object signal 21 (S104), the capacitive touch of the present invention The method of separating the object further includes the steps of: scanning the touch interface 11 at a scanning frequency, determining whether the touch interface continues to generate the touch signal (S201); and determining that the touch interface continues to generate the touch signal, continuing The touch signal is determined to be the first touch object signal 21 (S104).

In other words, when the touch signal has been determined as a first touch object signal 21, the touch device 10 continues to determine whether the energy volume of the touch signal changes with time or less than the threshold. The touch signal is the first touch object signal 21. For example, the touch signal is generated by a user's finger. Generally, the finger of the human body is highly conductive, and the area of contact with the touch interface 11 when the touch is performed is large. The touch signal generated by the touch panel 11 has a larger energy volume, and is generally determined by the touch device 10 as a first touch object signal 21 . However, during the movement of the user's finger on the touch interface 11, the user's finger is generally uneven, and the contact area of the user's finger with the touch interface 11 is small at a certain time. Therefore, the energy volume of the touch signal formed by the finger of the user on the touch interface 11 is less than the threshold. According to the steps of the preferred embodiment, the touch signal is determined by the touch device 10 as a first touch object signal 21, even if the user's finger forms a touch on the touch interface 11 The touch device 10 continues to determine that the touch signal is a first touch object signal 21.

Referring to FIG. 2, in the preferred embodiment, when the touch device 10 determines that the touch signal is the second touch object signal 22 (S105), the capacitive touch object of the present invention is separated. The method further includes the steps of: scanning the touch interface 11 to determine whether the touch interface continues to generate the touch signal (S202); and determining that the touch interface continues to generate the touch signal, recalculating the touch signal The energy volume of the touch signal (S203); and determining whether the energy volume of the touch signal exceeds the threshold (S204); when the energy volume of the touch signal exceeds the threshold, the touch signal is re-determined as the first A touch object signal 21 (S205); when the energy volume of the touch signal does not exceed the threshold, the touch signal is continuously determined to be the second touch object signal 22 (S206).

When the touch device 10 determines that the touch signal is a second touch object signal 22, if the touch signal persists, and the energy volume of the touch signal changes with time, when the touch signal is energy When the volume is greater than the threshold, the touch device 10 determines that the touch signal is a first touch object signal 21 . For example, the touch signal is generated by a user's finger. When the user's finger is just touching the touch interface 11, the user's finger and the touch interface 11 are not yet fully touched. The touch device 10 determines that the touch signal is a second touch object signal 22; when the user increases the force, the touch device 10 determines that the touch signal is lower than the threshold value. The contact area of the user's finger and the touch interface 11 is increased, and the energy volume of the touch signal is greater than the threshold. According to the steps of the preferred embodiment, the touch signal is re-determined as the first touch. Control object signal 21.

As shown in FIG. 3 and FIG. 4 , the touch interface 11 of the present invention is a capacitive touch panel having a plurality of touch detection points 111 on the touch interface 11 and the energy volume is the touch device. 10 is calculated by the following steps: Detecting the energy value of each touch detection point 111 by using the scan frequency (S401); determining whether the energy value of the touch detection points 111 exceeds a valid threshold (S402); when the touch detection point The energy value of the 111 is greater than the effective threshold, and the touch detection point 111 is determined to be an effective touch detection point 111 (S403); whether an effective touch is generated within a valid distance of the effective touch signal generation position is determined. Controlling the detection point 111 (S404); when there are other effective touch detection points 111 within the effective distance of the effective touch signal generation position, integrating the plurality of effective touch detection points 111 within the effective distance to generate the touch The control signal (S405); calculating the sum of the energy values of the plurality of effective touch detection points 111 of the touch signal to generate the energy volume (S406).

As shown in FIG. 3, the touch interface 11 is a capacitive touch panel having a plurality of touch detection points 111. When a touch object touches the touch interface 11 When the touch detection point 111 is touched, each of the plurality of touch detection points 111 generates a change in the amount of electricity according to the conductivity of the touch object. The degree of change of the power is the energy value of the touch detection point 111. When the touch object has a good electrical conductivity, the touch detection point 111 generates a large energy value; when the touch object has a low degree of conductivity, the touch detection point 111 generates a comparison. Small energy value.

As shown in FIG. 5 and FIG. 6 , for example, a touch object such as a user's finger for touching the touch interface 11 or a stylus dedicated to the capacitive touch device 10 is used. The stylus generally has a conductive pen tip and a conductive pen body. The conductive pen tip is a conductive rubber (Rubber), a conductive cloth, a conductive polyester (PET), and a conductive nylon (Nylon) pen tip. When the user touches the touch interface 11 with the stylus, the voltage change is generated by the conductive pen tip and the conductive pen body being electrically connected to the user's hand, since the conductive pen tip and the conductive pen body are necessarily provided. A resistance value, therefore, the stylus is less conductive than the user's finger. In other words, when the user's finger directly touches the touch interface 11, the touch detection point 111 that is touched is caused. A larger energy value is generated, and the touch detection point 111 generates a smaller energy value when the stylus touches the touch interface 11 . Further, in general, it is convenient to carry, and the stylus is designed to have a small volume. The diameter of the conductive pen is 2-8 mm, which is smaller than the finger end of a general user, so when the touch is performed, The contact area between the conductive pen tip and the touch interface 11 is smaller than the contact area between the user's finger and the touch interface 11, and the touch detection point 111 included in the contact area is also small. In summary, the stylus is less conductive than the user's finger, and the contact area of the stylus with the touch interface 11 is also smaller than the contact area between the user's finger and the touch interface 11. Therefore, the energy volume of the touch signal generated by the stylus touching the touch interface 11 is smaller than the energy volume of the touch signal generated by the user's finger touching the touch interface 11. When the threshold value is set properly, the touch device 10 determines that the touch signal generated by the user's finger is a first touch object signal 21, and the touch signal generated by the stylus is one. The second touch object signal 22 achieves the purpose of separating the touch object.

Referring to FIG. 7, in another preferred embodiment of the present invention, when determining that the touch signal is the first touch object signal 21 (S104), performing a first touch function (S701); When it is determined that the touch signal is the second touch object signal 22 (S105), a second touch function is performed (S702).

After the touch device 10 determines that the touch signal is the first touch object signal 21 or the second touch object signal 22, performing different functions according to the determination result, thereby reducing the operation steps when the user performs touch control. To improve operational efficiency, or to increase the diversity of applications.

Referring to FIG. 8 and FIG. 9 , in the preferred embodiment, when the touch device 10 performs a handwriting editing mode (S800): the first touch function is based on the first touch function 11 The movement track of the touch object signal 21 displays a first line 31 of a first thickness (S801); The second touch function displays the second line 32 of the second thickness according to the movement track of the second touch object signal 22 (S802); wherein the first thickness of the first line 31 The extent is greater than the second thickness of the second line 32.

Referring to FIG. 9 , the touch device 10 performs the handwriting editing mode for the user to touch and touch the touch interface 11 , and the touch device 10 detects the movement track of the touch signal. A line is displayed on the touch interface 11 along the moving track. According to the steps of the preferred embodiment, when the user touches the touch interface 11 with different touch objects, different thickness lines can be generated. For example, the user touches the touch interface 11 with the finger to generate the touch signal, and the touch device 10 determines that the touch signal is the first touch object signal 21, and according to the touch signal The movement track displays a first line 31 of a first degree of detail. When the user touches the touch panel 11 to generate the touch signal, the touch device 10 determines that the touch signal is the second touch object signal 22, and displays according to the movement track of the touch signal. a second line 32 of a second thickness, and the first thickness of the first line 31 is greater than the second thickness of the second line 32. Generally, the thickness of the user's finger is greater than the thickness of the stylus, so this operation response is in line with the general user's intuition. In the prior art, if the user wants to change the thickness of the line, he/she needs to select a function list from the touch object, click the line thickness replacement function, click a thin line option, and then return to the handwriting editing mode page for handwriting editing. . In the handwriting editing mode of the present invention, if the user wants to change the thickness of the handwritten line, the touch can be changed from the original touch to the touch with a stylus. In this way, the operation steps when the user performs handwriting editing are reduced, and the purpose of improving the use efficiency and convenience is achieved.

The first touch function is based on the first touch function. The generating position of the object control signal 21 displays a virtual laser spot 40 (S1001); The first touch function displays the trace line 50 according to the movement track of the second touch object signal 22 (S1002).

Referring to FIG. 11 , in the preferred embodiment, when the touch device 10 executes the briefing mode, for example, an external display device is connected to synchronously display the displayed image of the touch interface 11 for the listener. Watch. When the user performs a briefing or a speech, the user touches the touch interface 11 to generate a touch signal, and the touch device 10 determines that the touch signal is a first touch object signal 21, so according to the touch The position of the control signal displays a virtual laser spot 40, and the virtual laser spot 40 is simultaneously displayed on the external display device for reading by the listener. When the user has to form a trace 50 on the screen to record the focus or write the text, the stylus is used to touch the touch interface 11 to form a touch signal, and the touch device 10 determines the touch. The control signal is a second touch object signal 22, so that the trace line 50 is displayed according to the movement track of the touch signal formed by the stylus, and the hand trace 50 is synchronously displayed on the external display device. In this way, the user touches the finger and the stylus by using the finger, and the touch device 10 displays the virtual laser spot 40 or the handwriting line 50 according to the user's needs, and is convenient for the user to use. Improve the efficiency of speech.

Referring to FIG. 12, in the third preferred embodiment of the present invention, the first touch function displays a function list 60, and the function list 60 is displayed on the generated position of the first touch object signal 21. The second touch function displays the trace line 50 according to the movement track of the second touch object signal 22 .

In the preferred embodiment, when the touch device 10 determines that the touch signal generated by the touch interface 11 is a first touch object signal 21, a function list 60 is displayed; when the touch device 10 determines When the touch signal generated by the touch interface 11 is also the second touch object signal 22, a trace line 50 is formed according to the movement track of the touch signal. For example, when the user touches the touch interface 11 with the finger, the touch device 10 determines that the touch signal is a first touch object signal 21, so that a function is displayed at the position of the touch signal. List 60 is for the user to click. After completing this action, the use Instead of touching the touch interface 11 with a stylus, the touch device 10 determines that the touch signal is a second touch object signal 22, so that a trace line 50 is formed according to the movement trajectory of the touch signal.

Referring to FIG. 13 , in the fourth preferred embodiment of the present invention, the first touch function moves a display screen according to the moving direction of the first touch object signal 21 , and the second touch function system The touch interface 11 displays a trace line 50 according to the movement track of the second touch object signal 22 .

The present embodiment is applied to the display screen moving function and the handwriting editing function commonly used in the touch device 10. For example, the user touches the touch interface 11 with his finger and horizontally moves to the right of the user. The device 10 determines that the touch signal formed by the finger of the user on the touch interface 11 is a first touch object signal 21, so the first touch function is executed, and the display is moved along the moving direction of the touch signal. When the user touches the touch interface 11 and moves with a stylus, the touch device 10 determines that the touch signal is a second touch object signal 22, thereby performing the second touch function, according to The movement track of the touch signal displays a stroke line. In other words, the user also touches the touch interface 11 and moves the touch object. The touch object can be operated by using different touch objects, such as the stylus or the user's finger. The device 10 performs different functions, reduces the operation steps of replacing different functions when the user uses, or the malfunction of the touch device 10 when performing different functions, thereby achieving the purpose of improving the operation efficiency.

Referring to FIG. 14, in the fifth preferred embodiment of the present invention, when step S205 is performed to re-determine the touch signal as the first touch object signal 21, the following steps are further performed: canceling the display Two touch function lines (S1401).

When the first touch object is initially in contact with the touch interface 11, the touch device 10 is erroneously determined as the second touch object signal because the energy volume of the touch signal is not lower than the critical value. 22, and perform the second touch function. When the first touch object is in full contact and its After the touch signal is greater than the threshold, the touch device 10 corrects and confirms that it is a first touch object signal 21, but the line of the second touch function has been displayed by the touch interface 11. Therefore, according to the steps of the preferred embodiment, the touch interface 11 cancels the line of the displayed second control function, and the correct execution of the first touch object signal 21 enables the first touch function to be performed. purpose.

Referring to FIG. 15 , in the sixth preferred embodiment of the present invention, when the touch interface generates a plurality of touch signals (S1500), the method further includes the following steps: separately calculating the energy volume of each touch signal. (S1501) determining whether the energy volume of each of the touch signals exceeds a threshold (S1502); when the energy volume of one of the touch signals exceeds the threshold, determining that the touch signal is the first touch object signal 21 (S1503); when the energy volume of one of the touch signals does not exceed the threshold, the touch signal is determined to be the second touch object signal 22 (S1504).

When the user touches the touch interface 11 with a plurality of touch objects, the control device detects the plurality of touch signals and determines that each of the touch signals is a first touch object signal. 21 or a second touch object signal 22. In this manner, the user can simultaneously use the plurality of touch objects to generate different touch combinations. For example, the user touches the touch interface 11 with two fingers at the same time, and the touch device 10 determines the The touch interface 11 generates two first touch object signals 21 .

Referring to FIG. 16, in the preferred embodiment, when the touch device 10 determines that the two touch signals are the first touch object signal 21 (S1600), the method further includes the following steps: A change in the distance between the generated positions of the touch object signal 21 on the touch interface 11 is scaled to a display screen (S1601).

Referring to FIG. 17 , for example, when the user touches the touch screen with two fingers at the same time, the touch device 10 determines the touch signal generated by the two fingers on the touch interface 11 . The first touch object signal 21, the touch device 10 further calculates and continuously detects the distance of the two touch signals on the touch interface 11, and scales the display screen of the touch interface 11 according to the change of the distance. .

Referring to FIG. 18, in the seventh preferred embodiment of the present invention, when the touch signal is determined to be the second touch object signal 22 (S105), the method further includes the step of: scanning the touch at the scan frequency. The control interface 11 determines whether the touch interface 11 continues to generate the touch signal (S1801); when the touch signal continues to be generated, calculates the energy volume of the touch signal (S1802); and determines the energy volume of the touch signal Whether the threshold value is exceeded (S1803); when the energy volume of the touch signal does not exceed the threshold, the touch signal is continuously determined to be the second touch object signal 22 (S1800); when the energy volume of the touch signal is If the threshold value is exceeded, it is determined whether the energy volume of the touch signal is changed from less than the threshold value to greater than the threshold value for the first time (S1804); when it is determined that the energy volume of the touch signal is changed from less than the threshold value to greater than the first time The threshold value is used to determine that the touch signal is the second touch object signal 22 (S1805), and the touch signal is determined to be the first touch object signal 21 (S1806); when determining the energy of the touch signal Volume is the first time less than critical Switch greater than a threshold, it determines that the touch signal is the first signal touch object 21 (S1806).

When the user touches the touch interface 11 to touch the touch object, the force applied to the touch interface 11 may change with time, resulting in the energy volume of the touch signal generated by the first touch object. When the time is greater than the threshold value, and sometimes less than the threshold value, the touch device 10 may generate a false positive after scanning to cause the second touch function to be continuously executed. According to the preferred embodiment, when the touch signal is determined to be a second touch object signal 22 and the energy volume of the touch signal is scanned and recalculated, the energy volume of the touch signal is determined to be changed from less than a threshold value. When the threshold value is greater than the threshold value, it is determined whether the touch signal is changed from less than the threshold value to greater than the threshold value for the first time; when the energy volume of the touch signal is not the first time When the threshold value is greater than the threshold value, the second touch object 22 is judged and the second touch function is performed, and the touch signal is determined to be the first touch object signal 21 To further perform the correct first touch function.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention, but without departing from the technical solution of the present invention, according to the present invention. Technical Substantials Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solutions of the present invention.

Claims (10)

A method for separating a capacitive touch object is performed by a touch device having a touch interface, the method comprising the steps of: scanning the touch interface at a scan frequency to determine whether the touch interface generates a touch a control signal; when the touch interface generates the touch signal, calculating an energy volume of the touch signal; determining whether the energy volume of the touch signal exceeds a threshold; and when the energy volume of the touch signal exceeds the threshold, The touch signal is determined to be a first touch object signal; when the energy volume of the touch signal does not exceed the threshold, the touch signal is determined to be a second touch object signal. The method of separating the capacitive touch object according to claim 1, further comprising the steps of: a. scanning the touch interface at the scanning frequency when determining that the touch signal is the first touch object signal Determining whether the touch signal continues to generate the touch signal; b. continuously determining that the touch signal is the first touch object signal when the touch signal continues to be generated; c. determining that the touch signal is the When the second touch object signal is scanned, the touch interface is scanned to determine whether the touch interface continues to generate the touch signal; d. when the touch signal continues to be generated, the energy volume of the touch signal is calculated. E. determining whether the energy volume of the touch signal exceeds the threshold; f. when the energy volume of the touch signal exceeds the threshold, re-determining the touch signal as the first touch object signal; g. The energy volume of the touch signal does not exceed the threshold value, and the touch signal is continuously determined to be the second touch object signal. The method of separating the capacitive touch object according to claim 2, wherein the touch interface is a capacitive touch panel, and the touch interface has a plurality of touch detection points, and the energy volume is passed through Step calculation: detecting the energy value of each touch detection point by using the scan frequency; determining whether the energy value of the touch detection points exceeds a valid threshold; when the energy value of the touch detection point exceeds the The effective threshold value is used to confirm that the touch detection point is an effective touch detection point; whether an effective touch detection point is generated within an effective distance of the effective touch signal generation position; when the effective touch signal is generated When there are other effective touch detection points in the effective distance of the position, the plurality of effective touch detection points in the effective distance are integrated to generate the touch signal; and the plurality of effective touch detection points of the touch signal are calculated The sum of the energy values to produce the energy volume. The method of separating the capacitive touch object according to claim 2, wherein: when determining that the touch signal is the first touch object signal, performing a first touch function; and determining that the touch signal is the first Two touch object signals perform a second touch function. The method of separating the capacitive touch object according to claim 4, wherein when the touch device performs a handwriting editing mode, the first touch function is based on the movement of the touch interface according to the first touch object signal The track displays a first line of a first thickness; the second touch function displays a second line of a second thickness according to the movement track of the second touch object signal; wherein the first line The first thickness of the line is greater than the second thickness of the second line. The method of separating the capacitive touch object according to claim 4, wherein when the touch device performs a briefing mode, the first touch function is based on the position of the first touch object signal A virtual laser spot is displayed. The second touch function displays the trace line according to the movement track of the second touch object signal. The method of separating the capacitive touch object according to claim 4, wherein: the first touch function displays a function list, and the function list is displayed at a position where the first touch object signal is generated; the second The touch function displays the trace lines according to the movement track of the second touch object signal. The method for separating the capacitive touch object according to any one of claims 6 to 7, wherein when the step f is performed to re-determine the touch signal as the first touch object signal, the following steps are further performed: canceling The handwriting line of the second touch function is displayed. The method of separating the capacitive touch object according to claim 4, wherein when determining that the touch interface generates the plurality of touch signals, the method further comprises the steps of: respectively calculating the energy volume of each of the touch signals; Whether the energy volume of the touch signal exceeds a threshold value; when the energy volume of one of the touch signals exceeds the threshold value, determining that the touch signal is the first touch object signal; when the energy volume of one of the touch signals is not Exceeding the threshold value, determining that the touch signal is the second touch object signal; When the two touch signals are determined as the first touch object signal, a display screen is scaled according to the distance change between the generated positions of the first touch object signals on the touch interface. The method for separating the capacitive touch object according to claim 1 , when determining that the touch signal is the second touch object signal, further comprising the steps of: scanning the touch interface at the scanning frequency, determining the touch Whether the control interface continues to generate the touch signal; when the touch signal continues to be generated, calculating the energy volume of the touch signal; determining whether the energy volume of the touch signal exceeds the threshold; when the energy volume of the touch signal If the threshold value is not exceeded, the touch signal is continuously determined to be the second touch object signal; when the energy volume of the touch signal exceeds the threshold, determining whether the energy volume of the touch signal is less than the first time The value is changed to be greater than the threshold value; when it is determined that the energy volume of the touch signal is not changed from the threshold value to the threshold value for the first time, the original touch signal is cleared as the second touch object signal, and the touch is determined. The control signal is the first touch object signal; when it is determined that the energy volume of the touch signal is changed from less than the threshold value to greater than the threshold value for the first time, determining that the touch signal is the first touch Control object signal.