CN116137903A - Touch operation recognition method and device - Google Patents
Touch operation recognition method and device Download PDFInfo
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- CN116137903A CN116137903A CN202180041161.3A CN202180041161A CN116137903A CN 116137903 A CN116137903 A CN 116137903A CN 202180041161 A CN202180041161 A CN 202180041161A CN 116137903 A CN116137903 A CN 116137903A
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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Abstract
A touch operation recognition method and device, the method includes: the method comprises the steps of receiving a first touch signal generated by the touch of an active touch object in real time, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal if the first touch signal is the active signal, receiving a second touch signal generated by the touch of the active touch object, displaying a writing track only based on the active signal generated by the touch of the active touch object if the second touch signal is the passive signal and is generated in the erroneous judgment prevention area, receiving a third touch signal generated by the touch of the active touch object in real time along with the movement of the active touch object, and re-determining the erroneous judgment prevention area of the capacitive screen according to the third touch signal.
Description
The present disclosure relates to the field of touch technologies, and in particular, to a method and an apparatus for identifying a touch operation.
In the touch process, customers tend to use passive touch objects more and more, and touch contact points of the passive touch objects are thinner, more and more wear-resistant and more close to hard pen points used in actual writing to meet the demands of users. The principle of the passive touch object touch is the same as that of the finger touch, the thinner and harder the touch contact point of the passive touch object, the contact area of the capacitive screen is far smaller than the contact area of the finger and the capacitive screen in actual writing, and the capacitive screen needs to improve the sensing amount of the touch contact point or reduce the sensed touch threshold so as to adapt to the passive touch object with thinner touch contact point. The touch contact point of the active touch object is also a conductor, and when the thinner or harder touch contact point is provided, the touch contact point of the active touch object and the touch contact point of the passive touch object are close in touch sensing quantity of the capacitive screen and cannot be distinguished in a threshold limiting mode.
When the capacitive screen for writing is used, the capacitive screen can identify the touch operation of the active touch object, and meanwhile, the touch operation of the active touch object can be identified as the touch operation of the passive touch object to be output, so that the problem of false identification occurs.
Disclosure of Invention
The embodiment of the application provides a method and a device for identifying touch operation, which can avoid the touch operation of an active touch object from being identified as the touch operation of a passive touch object in the process of using the active touch object to carry out the touch operation, and ensure the accuracy of identifying the touch operation by a capacitive screen. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a method for identifying a touch operation, where the method includes:
scanning a touch operation for the capacitive screen;
when the touch operation is that an active touch object is generated, a first touch signal generated by the touch of the active touch object is received;
judging whether the first touch signal is an active signal or not, if so, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal;
receiving a second touch signal generated by the touch of the active touch object, judging whether the second touch signal is a passive signal, if yes, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if yes, displaying a writing track only based on the active signal generated by the touch of the active touch object;
And receiving a third touch signal generated by the touch of the active touch object along with the movement of the active touch object, and if the third touch signal is an active signal, re-determining an erroneous judgment prevention area of the capacitive screen according to the third touch signal.
In a second aspect, an embodiment of the present application provides a touch operation recognition device, where the touch operation recognition device includes:
the touch operation scanning module is used for scanning the touch operation aiming at the capacitive screen;
the first signal receiving module is used for receiving a first touch signal generated by the touch of the active touch object when the touch operation is generated by the active touch object;
the first area determining module is used for determining whether the first touch signal is an active signal or not, and if yes, determining an erroneous judgment preventing area of the capacitive screen according to the first touch signal;
the handwriting display module is used for receiving a second touch signal generated by the touch of the active touch object, judging whether the second touch signal is a passive signal, if yes, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if yes, displaying a writing track only based on the active signal generated by the touch of the active touch object;
And the second area determining module is used for receiving a third touch signal generated by the touch of the active touch object along with the movement of the active touch object, and if the third touch signal is an active signal, determining the erroneous judgment preventing area of the capacitive screen again according to the third touch signal.
The technical scheme provided by some embodiments of the present application has the beneficial effects that at least includes:
in the embodiment of the application, by scanning the touch operation on the capacitive screen, when the active signal generated by the touch of the active touch object is received, an erroneous judgment preventing area which moves dynamically along with the movement of the active signal is determined, and the passive signal generated by the touch of the active touch object received in the erroneous judgment preventing area is ignored, so that the capacitive screen displays writing only based on the active signal generated by the touch of the active touch object, the writing corresponding to the passive signal generated by the touch of the active touch object is prevented from being displayed, the recognition accuracy of the capacitive screen to the touch operation is ensured, the display effect is improved, and the user experience is further improved.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a touch operation recognition method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an error handwriting according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a touch operation recognition method according to an embodiment of the present application;
FIG. 4 provides an exemplary schematic diagram of determining a first touch point in accordance with an embodiment of the present application;
FIG. 5 is a schematic diagram of an embodiment of the present application for determining an erroneous judgment preventing area;
fig. 6 is a display effect diagram after setting the erroneous judgment preventing area according to the embodiment of the present application;
fig. 7 is a schematic diagram of an exemplary erroneous judgment preventing area according to an embodiment of the present application;
fig. 8 is a flowchart of a touch operation recognition method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a touch operation recognition device according to an embodiment of the present application.
The identification method of touch operation provided by the embodiment of the application can be applied to a capacitive screen, in particular to a capacitive screen which can be touched and written simultaneously by active touch and passive touch. The capacitive screen is mounted on a terminal for human-computer interaction by using the capacitive screen, and the terminal comprises, but is not limited to, an interactive tablet, a smart phone, a touch computer, a touch watch and the like for human-computer interaction by using the capacitive screen.
The hardware part of the terminal is composed of a touch display module, a complete machine module (comprising a controller) and the like, and the touch display module comprises a capacitive screen, a touch component and a backlight component, wherein the backlight component is used for providing a backlight light source for the capacitive screen, the capacitive screen is generally provided with a liquid crystal display device for displaying pictures, the touch component is arranged on the capacitive screen or at the front end of the capacitive screen and used for collecting touch data generated by touch operation of a user and transmitting the collected touch data to the complete machine module for processing.
In actual use, when a user writes content on the capacitive screen through a finger or a touch object such as a touch pen, the touch component of the terminal acquires touch data, so that the touch component converts the touch data into coordinate data of a touch point and then sends the coordinate data to the complete machine module, or the touch data is sent to the complete machine module and is converted into the coordinate data of the touch point by the complete machine module, and the complete machine module drives the capacitive screen to display writing handwriting after obtaining the coordinate data of the touch point.
In the prior art, performing touch operation on the capacitive screen to write content mainly takes two modes, namely performing touch operation on the capacitive screen by utilizing an active touch object, and generating an active signal on the capacitive screen, wherein the active touch object can be an active capacitive touch pen, and a circuit is arranged in the active capacitive touch pen and can actively transmit signals to the capacitive screen so as to generate the active signal on the capacitive screen; still another method is to perform a touch operation on a capacitive screen by using a passive touch object, where the passive signal is generated on the capacitive screen, and the passive signal is a touch signal generated on the capacitive screen by absorbing an electric signal to affect a capacitance change of the capacitive screen through a touch contact point contacting the capacitive screen, and the passive touch object may be a passive capacitive touch pen, a finger, or other articles or devices that can cause the capacitance change of the capacitive screen by absorbing the electric signal.
Generally, when an active touch object is used for writing on the capacitive screen, the active touch object may absorb an electrical signal through a touch contact point to affect a capacitance change of the capacitive screen, and the capacitive screen may easily and mistakenly identify the active touch object as a passive touch object at the same time, so that two touch signals, that is, an active signal generated by touching the active touch object and a passive signal generated by touching the active touch object, are generated on the capacitive screen. The active signal generated by the touch of the active touch object is a desired signal, and the passive signal generated by the touch of the active touch object is noise. The active signal refers to a signal generated on the capacitive screen by the active touch object actively transmitting a signal to the capacitive screen through an internal circuit, and the active touch object can be a touch object capable of actively transmitting a signal, such as an active capacitive pen. The passive signal refers to an active touch object or a signal generated by the passive touch object on the capacitive screen by absorbing the electric signal to influence the capacitance change of the capacitive screen, and the passive touch object can be a passive capacitive pen or a touch object such as a hand which can absorb the electric signal on the surface of the capacitive screen.
According to the method and the device for displaying the touch operation of the capacitive screen, the touch operation of the capacitive screen can be scanned, when a first touch signal generated by the touch of an active touch object is received, and the first touch signal is an active signal, an erroneous judgment prevention area is determined according to the first touch signal, the erroneous judgment prevention area is used for ignoring a second touch signal generated by the touch of the active touch object and received in the erroneous judgment prevention area, so that a writing track is displayed only based on the active signal generated by the touch of the active touch object, the display of writing handwriting corresponding to a passive signal generated by the fact that the active touch object absorbs an electric signal through a touch contact point to influence the capacitance change of the capacitive screen is avoided, the recognition accuracy of the capacitive screen on the touch operation is guaranteed, the erroneous judgment prevention area is changed along with the movement of the active touch object, and the second touch signal is a passive signal. The identification device of touch operation is a core device for touch operation identification, the identification device of touch operation can be a system process running in a terminal system of a touchable terminal device with a capacitive screen, or can be an identification device of touch operation which is independent of the touchable terminal device and is reliably connected with the touchable terminal device and is mainly used for scanning, identifying and outputting the touch operation aiming at the capacitive screen, and the identification device of touch operation can be configured in the terminal system when the touchable terminal device leaves a factory or can be installed in the touchable terminal device by a user. The terminal system may specifically be an operating system configured in the terminal device, for example: android system, windows system, IOS system, hong meng system, etc.
The following describes in detail the touch operation recognition method provided in the embodiment of the present application with reference to fig. 1 to 8.
Referring to fig. 1, a flowchart of a touch operation recognition method is provided in an embodiment of the present application. As shown in fig. 1, the method of recognizing a touch operation may include the following steps S101 to S105.
S101, scanning touch operation aiming at a capacitive screen;
specifically, the touch operation on the capacitive screen is scanned, that is, the touch signal generated when the touch operation is performed on the capacitive screen is scanned, and the touch signal may be an active signal or a passive signal.
The active signal is a touch signal generated by the touch of an active touch object, the active touch object can be an active capacitive touch pen, and a circuit is arranged in the active capacitive touch pen and can actively transmit a signal to the capacitive screen so as to generate a touch signal on the capacitive screen.
The passive signal may be a touch signal generated by a passive touch object touch, or may be a touch signal generated by an active touch object touch. If the passive signal is a touch signal generated by the touch of the passive touch object, the passive touch object is similar to the touch effect of a finger, and absorbs the electric signal through a touch contact point contacted with the capacitive screen to influence the capacitance change of the capacitive screen, so that the touch signal is generated on the capacitive screen. The passive touch object may be a passive capacitive stylus, a finger, or other object or device that may cause a change in capacitance of the capacitive screen by absorbing an electrical signal. If the passive signal is a touch signal generated by touching an active touch object, the active touch object may be an active capacitive touch pen, and a pen point of the active capacitive touch pen is made of a conductive material.
It will be appreciated that the active touch is primarily used to generate an active signal, and thus the passive signal generated by the active touch object touch is an error signal.
The capacitive screen samples touch signals to the capacitive screen at a given touch sampling rate.
S102, when the touch operation is that an active touch object is generated, receiving a first touch signal generated by the touch of the active touch object;
s103, judging whether the first touch signal is an active signal or not, if so, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal;
the first touch signal is generated by the touch operation of the active touch object on the capacitive screen.
Specifically, if the first touch signal is an active signal generated by touching an active touch object, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal.
The erroneous judgment preventing area is an area in which only the identified active signal can be outputted. This area is typically located near the touch point of the active touch object and the capacitive screen, and as the touch point moves, the erroneous determination preventing area also moves.
The specific performance of the first touch signal on the capacitive screen may be that the touch sensing parameter of the corresponding touch area changes, the determining of the erroneous judgment preventing area based on the first touch signal may be determining the erroneous judgment preventing area based on the touch sensing parameter changing area, and the touch sensing parameter changing area is located in the erroneous judgment preventing area.
The touch sensing parameter may be a touch point capacitance value, for example, a capacitive screen includes a plurality of capacitive sensing units, the touch sensing parameter is a capacitance value of each capacitive sensing unit, the touch sensing parameter change area refers to a change area of the capacitance value of the plurality of capacitive sensing units corresponding to one touch operation, and the area formed by the plurality of capacitive sensing units is the touch sensing parameter change area.
Optionally, the determining the erroneous judgment preventing area of the capacitive screen according to the first touch signal may be by determining a first touch contact point of an active touch object corresponding to the first touch signal, and then using a circular area formed by using the first touch contact point as a center and a preset distance as a radius as the erroneous judgment preventing area of the capacitive screen.
Optionally, the preset distance is not greater than 15 cm.
Optionally, the erroneous judgment preventing area may be a rectangular area, a triangular area, a trapezoidal area or any other closed area, which is not limited in this embodiment of the present application.
S104, receiving a second touch signal generated by the touch of the active touch object, judging whether the second touch signal is a passive signal, if yes, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if yes, displaying a writing track only based on the active signal generated by the touch of the active touch object;
specifically, if the second touch signal is a passive signal, that is, the active touch object absorbs an electrical signal through a touch contact point in contact with the capacitive screen, affects a capacitance change of the capacitive screen, and generates a signal on the capacitive screen, it is determined whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if the passive signal is generated in the erroneous judgment prevention area of the capacitive screen, the second touch signal is ignored, so that the capacitive screen displays a writing track only based on the active signal generated by the touch of the active touch object.
The ignoring the second touch signal may be increasing a signal recognition threshold of a passive signal within the erroneous determination prevention area such that the second touch signal is not recognized; the second touch signal may be recognized, and the second touch signal may be ignored when the writing track is displayed.
It will be appreciated that the touch operation performed by one active touch object on the capacitive screen generates two touch signals including a first touch signal and a second touch signal, so that two similar handwriting are left on the capacitive screen, namely, a first handwriting corresponding to the first touch signal and a second handwriting corresponding to the second touch signal, where the first handwriting is a desired handwriting written by using the active touch object, and the second handwriting is an error handwriting generated when writing by using the active touch object. Referring to fig. 2, an exemplary schematic diagram of error handwriting is provided in an embodiment of the present application. As shown in fig. 2, two handwriting generated by one touch operation of the active capacitive touch pen on the capacitive screen are shown, wherein the solid line is the expected handwriting, and the dotted line is the error handwriting.
In the embodiment of the application, when a first touch signal generated by the capacitive screen by the touch operation of the active touch object on the capacitive screen is received, an erroneous judgment prevention area is formed based on the first touch signal, if a second touch signal generated by the active touch object on the capacitive screen is received in the erroneous judgment prevention area, the second touch signal is ignored, and a writing track is displayed only based on the active signal generated by the touch of the active touch object, so that the capacitive screen only outputs and displays expected handwriting of writing of the active touch object, and error handwriting generated when the active touch object is displayed is avoided.
Optionally, the displaying the writing track based on the active signal generated by the active touch object touch may include: judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not; if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object; and if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal.
S105, along with the movement of the active touch object, receiving a third touch signal generated by the touch of the active touch object, and if the third touch signal is an active signal, re-determining an erroneous judgment prevention area of the capacitive screen according to the third touch signal.
Specifically, along with the movement of the active touch object, a third touch signal generated by the touch of the active touch object is received in real time, and if the third touch signal is the active signal generated by the touch of the active touch object, the erroneous judgment prevention area of the capacitive screen is redetermined according to the third touch signal.
It will be understood that the erroneous judgment preventing area is not an area with a fixed position, but an area which changes in real time according to the position of a touch signal generated by the current active touch object touch along with the movement of the active touch object. After the erroneous judgment preventing area of the capacitive screen is redetermined, the passive signal generated in the erroneous judgment preventing area at the moment can be identified according to the redetermined erroneous judgment preventing area.
In the embodiment of the application, by scanning the touch operation on the capacitive screen, when an active signal generated by the touch of an active touch object is received, an erroneous judgment preventing area which dynamically moves along with the movement of the active touch object is determined, and a passive signal generated by the touch of the active touch object and received in the erroneous judgment preventing area is ignored, so that the capacitive screen displays writing only based on the active signal generated by the touch of the active touch object, the writing corresponding to the passive signal generated by the touch of the active touch object is prevented from being displayed, the recognition accuracy of the capacitive screen to the touch operation is ensured, the display effect is improved, and the user experience is further improved.
Referring to fig. 3, a flowchart of a touch operation recognition method is provided in an embodiment of the present application. As shown in fig. 3, the method of recognizing a touch operation may include the following steps S201 to S209.
S201, scanning touch operation for a capacitive screen;
in particular, reference may be made to step S101 in another embodiment, which is not described herein.
S202, when the touch operation is that an active touch object is generated, receiving a first touch signal generated by the touch of the active touch object;
in particular, the details of step S102 in another embodiment will be described in detail, and will not be described here again.
S203, judging whether the first touch signal is an active signal, if so, determining a first touch contact point of an active touch object corresponding to the first touch signal;
specifically, if the first touch signal is an active signal generated by touching an active touch object, determining a first touch contact point of the active touch object corresponding to the first touch signal, where the first touch contact point is a contact position between the active touch object and the capacitive screen, and may be represented by coordinates based on a screen coordinate system of the capacitive screen.
In a possible implementation manner, the touch detection component of the capacitive screen detects the first touch signal, the first touch signal corresponds to a touch sensing parameter in a certain area on the capacitive screen, and the bottom processing chip of the capacitive screen receives information of the touch sensing parameter change area and determines a position of a first touch contact point of the active touch object in the touch sensing parameter change area.
The touch sensing parameter may be a contact capacitance value of a capacitive screen.
It will be appreciated that the touch sensing parameter variation area is a portion of the area on the capacitive screen that is devoid of a specific shape and area.
Further, the determining the first touch point position of the active touch object in the touch sensing parameter variation area may be implemented in the following two possible embodiments.
One possible identification method 1: and a minimum coverage circle of the touch perception parameter change area is made, and the circle center of the minimum coverage circle is identified as the position of the first touch contact point.
One possible identification mode 2: and the largest inscribed circle of the touch perception parameter change area is made, and the circle center of the largest inscribed circle is identified as the position of the first touch contact point.
Referring to fig. 4, an exemplary schematic diagram of determining the first touch point is provided in the embodiment of the application.
As shown in fig. 4, an active capacitive touch pen is taken as an example, and the active capacitive touch pen is called an active pen for short. The identification method 1: when the active pen performs touch operation on the capacitive screen, the touch detection part of the capacitive screen detects a touch perception parameter change area 1 and transmits touch perception parameter change area information to the capacitive screen bottom layer processing chip, the capacitive screen bottom layer processing chip recognizes the M point coordinate of the center of a circle of the minimum coverage circle of the touch perception change area, and the M point coordinate is determined to be a first touch contact point. The identification method 2: when the active pen performs touch operation on the capacitive screen, the touch detection part of the capacitive screen detects a touch perception parameter change area 2 and transmits touch perception parameter change area information to the capacitive screen bottom layer processing chip, the capacitive screen bottom layer processing chip recognizes the center N point coordinate of the largest inscribed circle of the touch perception change area, and the N point coordinate is determined to be a first touch contact point.
S204, taking a first touch contact point as a circle center and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the capacitive screen;
optionally, the preset distance is not greater than 15 cm.
When the active touch object and the passive touch object are used for writing, an active signal generated by the touch operation of the active touch object on the capacitive screen can form an erroneous judgment prevention area, and in order to avoid the influence of the erroneous judgment prevention area on a passive signal generated by the touch operation of the passive touch object on the capacitive screen, according to the shoulder width of most users, a preset distance in a circular area formed by taking the first touch contact point as a center and a preset distance as a radius is set to be not more than 15 cm as a preferred preset distance provided by the embodiment of the application. The specific value of the preset distance can be set according to actual use habits.
Referring to fig. 5, an exemplary schematic diagram of determining the erroneous determination prevention area is provided in the embodiment of the present application.
As shown in fig. 5, the first touch contact point of the active pen is used as a center, a circle area is used as a radius of 0.5cm, and the circle area is the erroneous judgment preventing area.
S205, receiving a second touch signal generated by the touch of the active touch object, judging whether the second touch signal is a passive signal, if yes, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if yes, judging whether the signal intensity of the active signal generated by the touch of the active touch object reaches a signal recognition threshold value of the active signal;
S206, if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal recognition threshold value of the active signal, displaying writing handwriting according to the active signal generated by the touch of the active touch object;
s207, if the signal intensity of the active signal generated by the touch of the active touch object does not reach the signal recognition threshold value of the active signal, judging the active signal generated by the touch of the active touch object as a false touch signal;
in this embodiment, if the signal strength of the active signal is greater than or equal to the signal recognition threshold of the active signal, writing handwriting may be displayed based on the active signal, and if the signal strength of the active signal is less than the signal recognition threshold of the active signal, the active signal is determined as a false touch signal or noise. The signal recognition threshold may be a degree of variation of a certain amount caused by a touch operation. For example, if the initial recognition threshold of the active signal is 50 units and the active signal applied to the capacitive screen at a moment is 60 units, the active signal is greater than the initial recognition threshold of the active signal, and the capacitive screen may display writing generated by the active signal; and if the passive touch object touch signal is 40 units, not displaying the writing handwriting generated by the active signal.
When the second touch signal is a passive signal generated by the capacitive screen and the capacitive screen is generated by the capacitive screen by the active touch object absorbing the electric signal through the touch contact point contacted with the capacitive screen to influence the capacitance change of the capacitive screen, if the second touch signal is not processed, the capacitive screen outputs and displays the display effect including the expected handwriting corresponding to the active signal generated by the active touch object touch and the error handwriting corresponding to the passive signal generated by the active touch object touch as shown in fig. 2, the display effect is extremely poor, and after the erroneous judgment prevention area as shown in fig. 5 is determined based on the first touch signal, the second touch signal is ignored, and the capacitive screen displays the display effect including only the expected handwriting only based on the active signal generated by the active touch object touch as shown in fig. 6.
S208, along with the movement of the active touch object, receiving a third touch signal generated by the touch of the active touch object, and if the third touch signal is an active signal, determining a second touch contact point of the active touch object corresponding to the third touch signal;
s209, taking the second touch contact point as a circle center, and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the redetermined capacitive screen.
It can be appreciated that the erroneous determination preventing area is not fixed in position, and the erroneous determination preventing area is changed at any time along with the movement of the active touch object. Along with the movement of the active touch object, a third touch signal generated by the touch of the active touch object is received in real time, a circular area which takes a second touch contact point of the active touch object corresponding to the third touch signal as a circle center and a preset distance as a radius is determined to be used as a redetermined false judgment preventing area of the capacitive screen. That is, the erroneous determination preventing area is an area that moves with the movement of the touch contact point of the active touching object and the capacitive screen at a time.
Referring to fig. 7, an exemplary schematic diagram of an erroneous judgment preventing area is provided in an embodiment of the present application. As shown in fig. 7, in the process of drawing the handwriting curve by using the active capacitive touch pen, the active capacitive touch pen is located at different positions, and the corresponding erroneous judgment preventing areas are different, and as shown in the figure, when the active capacitive touch pen is located at the first position, the erroneous judgment preventing area at this time is the erroneous judgment preventing area 1, and when the active capacitive touch pen is located at the second position, the erroneous judgment preventing area at this time is the erroneous judgment preventing area 2.
In the embodiment of the application, by scanning the touch operation on the capacitive screen, when an active signal generated by the touch of an active touch object is received, an erroneous judgment preventing area which dynamically moves along with the movement of the active touch object is determined, and a passive signal generated by the touch of the active touch object and received in the erroneous judgment preventing area is ignored, so that the capacitive screen displays writing only based on the active signal generated by the touch of the active touch object, the writing corresponding to the passive signal generated by the touch of the active touch object is prevented from being displayed, the recognition accuracy of the capacitive screen to the touch operation is ensured, the display effect is improved, and the user experience is further improved.
Referring to fig. 8, a flowchart of a touch operation recognition method is provided in an embodiment of the present application. As shown in fig. 8, the method of recognizing a touch operation may include the following steps S301 to S306.
S301, scanning touch operation for a capacitive screen;
in particular, reference may be made to step S101 in another embodiment, which is not described herein.
S302, when the touch operation is that an active touch object is generated, a first touch signal generated by the touch of the active touch object is received;
In particular, the details of step S102 in another embodiment will be described in detail, and will not be described here again.
S303, judging whether the first touch signal is an active signal, if so, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal;
in particular, reference may be made to step S103 in another embodiment, which is not described herein.
S304, receiving a fourth touch signal generated by the touch of the passive touch object, and judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen if the fourth touch signal is a passive signal;
s305, if the passive signal is generated in the erroneous judgment prevention area of the capacitive screen, displaying a writing track only based on the active signal generated by the touch of the active touch object;
under the condition that the active touch object and the passive touch object are used for writing, a first touch signal is generated based on the touch operation of the active touch object on the capacitive screen, after an erroneous judgment prevention area is determined according to the first touch signal, a fourth touch signal generated by the passive touch object on the touch operation of the capacitive screen is received, whether the fourth touch signal is generated in the erroneous judgment prevention area of the capacitive screen or not is judged, if the fourth touch signal is in the erroneous judgment prevention area of the capacitive screen, the fourth touch signal is ignored, and a writing track is displayed only based on the active signal generated by the touch of the active touch object.
Optionally, if the erroneous judgment preventing area is a circular area formed by taking a first touch contact point of the active touch object corresponding to the first touch signal as a circle center and taking a preset distance as a radius. The determining whether the fourth touch signal is generated in the erroneous determination preventing area of the capacitive screen may be determining whether the touch point of the passive touch object and the capacitive screen is in the erroneous determination preventing area. For example, if the distance between the touch point of the passive touch object and the capacitive screen and the first touch point is smaller than the preset distance, determining that the fourth touch signal is in the erroneous judgment preventing area of the capacitive screen, and if the distance between the touch point of the passive touch object and the capacitive screen and the first touch point is larger than the preset distance, determining that the fourth touch signal is outside the erroneous judgment preventing area of the capacitive screen.
Optionally, the displaying the writing track based on the active signal generated by the active touch object touch includes: judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not; if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object; and if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal.
And S306, if the passive signal is not generated in the erroneous judgment prevention area of the capacitive screen, displaying the writing track based on the active signal generated by the touch of the active touch object, and displaying the writing track based on the passive signal generated by the touch of the passive touch object.
Specifically, if the fourth touch signal is outside the erroneous judgment preventing area of the capacitive screen, it indicates that there is no erroneous recognition of the active pen, and at this time, both the active signal generated by the active touch object touch and the passive signal generated by the passive touch object touch may display the writing trace, specifically, the writing trace is displayed based on the active signal generated by the active touch object touch and the writing trace is displayed based on the passive signal generated by the passive touch object touch.
The active signal display writing track generated based on the active touch object touch and the passive signal display writing track generated based on the passive touch object touch comprise: judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not and judging whether the signal intensity of a passive signal generated by the touch of the passive touch object reaches a signal identification threshold value of the passive signal or not; if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object; if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal; if the signal intensity of the passive signal generated by the touch of the passive touch object reaches the signal identification threshold value of the passive signal, displaying a writing track according to the passive signal generated by the touch of the passive touch object; and if the signal intensity of the passive signal generated by the touch of the passive touch object does not reach the signal identification threshold value of the passive signal, judging the passive signal generated by the touch of the passive touch object as a false touch signal.
In the embodiment of the application, by scanning the touch operation on the capacitive screen, when the active signal generated by the touch of the active touch object is received, an erroneous judgment preventing area which moves dynamically along with the movement of the active signal is determined, and the passive signals generated by the touch of all passive touch objects received in the erroneous judgment preventing area are ignored, so that the capacitive screen displays writing handwriting only based on the active signal generated by the touch of the active touch object, the writing handwriting corresponding to the passive signal generated by the touch of the active touch object is prevented from being displayed, the recognition accuracy of the capacitive screen to the touch operation is ensured, the display effect is improved, and the user experience is further improved.
The touch operation recognition device provided in the embodiment of the present application will be described in detail with reference to fig. 9. Note that, the recognition device for touch operation in fig. 9 is used to execute the method of the embodiments shown in fig. 1 to 8 of the present application, and for convenience of explanation, only the portion relevant to the embodiments of the present application is shown, and specific technical details are not disclosed, please refer to the embodiments shown in fig. 1 to 8 of the present application.
Referring to fig. 9, a schematic structural diagram of a touch operation recognition device is provided in an embodiment of the present application. As shown in fig. 9, the recognition apparatus 1 for touch operation according to the embodiment of the present application may include: the touch operation scanning module 11, the first signal receiving module 12, the first area determining module 13, the handwriting display module 14, and the second area determining module 15 specifically include:
A touch operation scanning module 11 for scanning a touch operation for the capacitive screen;
a first signal receiving module 12, configured to receive a first touch signal generated by touching the active touch object when the touch operation is the active touch object generation;
the first area determining module 13 is configured to determine whether the first touch signal is an active signal, if yes, determine an erroneous determination preventing area of the capacitive screen according to the first touch signal;
the handwriting display module 14 is configured to receive a second touch signal generated by the touch of the active touch object, determine whether the second touch signal is a passive signal, if yes, determine whether the passive signal is generated in an erroneous determination prevention area of the capacitive screen, and if yes, display a writing track based only on the active signal generated by the touch of the active touch object;
the second area determining module 15 is configured to receive a third touch signal generated by touching the active touch object along with movement of the active touch object, and if the third touch signal is an active signal, re-determine an erroneous judgment preventing area of the capacitive screen according to the third touch signal.
Optionally, the handwriting display module 14 is further configured to:
and receiving a fourth touch signal generated by the touch of the passive touch object, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen or not if the fourth touch signal is the passive signal, and if so, displaying a writing track only based on the active signal generated by the touch of the active touch object.
Optionally, the handwriting display module 14 is further configured to:
and if the passive signal is not generated in the erroneous judgment prevention area of the capacitive screen, displaying a writing track based on the active signal generated by the touch of the active touch object, and displaying the writing track based on the passive signal generated by the touch of the passive touch object.
Optionally, the first area determining module 13 is specifically configured to:
determining a first touch contact point of an active touch object corresponding to the first touch signal;
and taking the first touch contact point as a circle center and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the capacitive screen.
Optionally, the second area determining module 15 is specifically configured to:
determining a second touch contact point of the active touch object corresponding to the third touch signal;
And taking the second touch contact point as a circle center, and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the capacitive screen.
Optionally, the preset distance is not greater than 15 cm.
Optionally, the handwriting display module 14 is further configured to:
judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not;
if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object;
and if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal.
Optionally, the handwriting display module 14 is further configured to:
judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not and judging whether the signal intensity of a passive signal generated by the touch of the passive touch object reaches a signal identification threshold value of the passive signal or not;
If the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object;
if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal;
if the signal intensity of the passive signal generated by the touch of the passive touch object reaches the signal identification threshold value of the passive signal, displaying a writing track according to the passive signal generated by the touch of the passive touch object;
and if the signal intensity of the passive signal generated by the touch of the passive touch object does not reach the signal identification threshold value of the passive signal, judging the passive signal generated by the touch of the passive touch object as a false touch signal.
It should be noted that, in the touch operation recognition apparatus provided in the foregoing embodiment, only the division of the above functional modules is used for illustration when the touch operation recognition method is executed, and in practical application, the above functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the device for identifying a touch operation provided in the above embodiment belongs to the same concept as the method embodiment for identifying a touch operation, which is embodied in the detailed implementation process and is not described herein.
In the embodiment of the application, by scanning the touch operation on the capacitive screen, when the active signal generated by the touch of the active touch object is received, an erroneous judgment preventing area which moves dynamically along with the movement of the active signal is determined, and the passive signal generated by the touch of the active touch object received in the erroneous judgment preventing area is ignored, so that the capacitive screen displays writing only based on the active signal generated by the touch of the active touch object, the writing corresponding to the passive signal generated by the touch of the active touch object is prevented from being displayed, the recognition accuracy of the capacitive screen to the touch operation is ensured, the display effect is improved, and the user experience is further improved.
The embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are adapted to be loaded by a processor and execute the method for identifying a touch operation in the embodiment shown in fig. 1 to 8, and a specific execution process may refer to specific descriptions of the embodiment shown in fig. 1 to 8, which are not repeated herein.
It will be clear to a person skilled in the art that the solution of the present application may be implemented by means of software and/or hardware. "Unit" and "module" in this specification refer to software and/or hardware capable of performing a specific function, either alone or in combination with other components, such as Field programmable gate arrays (Field-ProgrammaBLE Gate Array, FPGAs), integrated circuits (Integrated Circuit, ICs), etc.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be performed by hardware associated with a program that is stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.
The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.
Claims (8)
- A method of recognizing a touch operation, applied to a capacitive screen, the method comprising:Scanning a touch operation for the capacitive screen;when the touch operation is that an active touch object is generated, a first touch signal generated by the touch of the active touch object is received;judging whether the first touch signal is an active signal or not, if so, determining an erroneous judgment prevention area of the capacitive screen according to the first touch signal;receiving a second touch signal generated by the touch of the active touch object, judging whether the second touch signal is a passive signal, if yes, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen, and if yes, displaying a writing track only based on the active signal generated by the touch of the active touch object;and receiving a third touch signal generated by the touch of the active touch object along with the movement of the active touch object, and if the third touch signal is an active signal, re-determining an erroneous judgment prevention area of the capacitive screen according to the third touch signal.
- The method of claim 1, further comprising:and receiving a fourth touch signal generated by the touch of the passive touch object, judging whether the passive signal is generated in an erroneous judgment prevention area of the capacitive screen or not if the fourth touch signal is the passive signal, and if so, displaying a writing track only based on the active signal generated by the touch of the active touch object.
- The method of claim 2, further comprising:and if the passive signal is not generated in the erroneous judgment prevention area of the capacitive screen, displaying a writing track based on the active signal generated by the touch of the active touch object, and displaying the writing track based on the passive signal generated by the touch of the passive touch object.
- The method for recognizing a touch operation according to claim 1, wherein the determining the erroneous determination preventing area of the capacitive screen according to the first touch signal includes:determining a first touch contact point of an active touch object corresponding to the first touch signal;and taking the first touch contact point as a circle center and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the capacitive screen.
- The method for recognizing a touch operation according to claim 1, wherein the redetermining the erroneous judgment preventing area of the capacitive screen according to the third touch signal includes:determining a second touch contact point of the active touch object corresponding to the third touch signal;and taking the second touch contact point as a circle center, and taking a circular area formed by taking a preset distance as a radius as an erroneous judgment preventing area of the capacitive screen.
- The method of claim 4 or 5, wherein the predetermined distance is not greater than 15 cm.
- The method for recognizing a touch operation according to claim 1 or 2, wherein the displaying of the writing trace based on only the active signal generated by the active touching object touch includes:judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not;if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object;and if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal.
- The method of claim 3, wherein the displaying the writing trace based on the active signal generated by the active touch object touch and displaying the writing trace based on the passive signal generated by the passive touch object touch, comprises:Judging whether the signal intensity of an active signal generated by the touch of the active touch object reaches a signal identification threshold value of the active signal or not and judging whether the signal intensity of a passive signal generated by the touch of the passive touch object reaches a signal identification threshold value of the passive signal or not;if the signal intensity of the active signal generated by the touch of the active touch object reaches the signal identification threshold value of the active signal, displaying a writing track according to the active signal generated by the touch of the active touch object;if the signal intensity of the active signal generated by the active touch object touch does not reach the signal identification threshold value of the active signal, judging the active signal generated by the active touch object touch as a false touch signal;if the signal intensity of the passive signal generated by the touch of the passive touch object reaches the signal identification threshold value of the passive signal, displaying a writing track according to the passive signal generated by the touch of the passive touch object;and if the signal intensity of the passive signal generated by the touch of the passive touch object does not reach the signal identification threshold value of the passive signal, judging the passive signal generated by the touch of the passive touch object as a false touch signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/118798 WO2023039797A1 (en) | 2021-09-16 | 2021-09-16 | Method and apparatus for identifying touch operation |
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| CN116137903A true CN116137903A (en) | 2023-05-19 |
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| US20160266719A1 (en) * | 2011-12-19 | 2016-09-15 | Egalax_Empia Technology Inc. | Touch method and touch processor |
| CN105335086B (en) * | 2014-08-12 | 2018-12-11 | 苏宁易购集团股份有限公司 | Operating method of touch panel and device |
| WO2018034496A1 (en) * | 2016-08-17 | 2018-02-22 | 주식회사 리딩유아이 | Stylus pen, touch-sensing system, touch-sensing controller, and touch-sensing method |
| CN110007784B (en) * | 2019-02-28 | 2020-07-24 | 华为技术有限公司 | Active stylus calibration method, active stylus and electronic equipment |
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