CN109189259B - Touch erase anti-interference method and device and terminal equipment - Google Patents
Touch erase anti-interference method and device and terminal equipment Download PDFInfo
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- CN109189259B CN109189259B CN201810821342.8A CN201810821342A CN109189259B CN 109189259 B CN109189259 B CN 109189259B CN 201810821342 A CN201810821342 A CN 201810821342A CN 109189259 B CN109189259 B CN 109189259B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention is suitable for the technical field of touch control, and provides a touch control erasing anti-interference method, a device and terminal equipment, wherein the method comprises the following steps: detecting a trigger signal of an erasing action; if the trigger signal of the erasing action is detected, determining a current touch point according to the trigger signal; changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point; the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface. The invention can solve the problems of incomplete erasing and interference of erasing edge lines in the process of erasing the electronic whiteboard.
Description
Technical Field
The invention belongs to the technical field of touch control, and particularly relates to a touch control erasing anti-interference method, a touch control erasing anti-interference device and terminal equipment.
Background
At present, a plurality of devices in the market use electronic whiteboard line drawing software, and realize basic line drawing and erasing functions through a touch display screen. Because the existing electronic whiteboard based on infrared touch has certain specificity, when erasing actions are carried out through a palm, more misoperation is easy to occur, and simultaneous writing and erasing cannot be completely supported.
In the prior art, the operation of a touch point is identified as an erasing or line drawing action according to whether the information of the touch point exceeds a threshold value; when the palm is used for erasing, due to the characteristics of the palm, the contact area between the palm and the display screen can be changed frequently, and the palm can be separated from the display screen instantly or the contact area is smaller than an erasing judgment threshold value in actual operation, so that the erasing action is changed into a line drawing action; as shown in fig. 1, the actual contact area during palm erasing may be a1 or a2 or A3, rather than the whole palm, and only the portion where a1, a2 or A3 passes may be erased during erasing, and the erasing position may jump among the three during moving, resulting in incomplete erasing; in addition, as shown in fig. 2, when the palm is wiped, the finger may touch the display screen, and a line may be formed at the edge of wiping, which may cause a disturbance of a misregistration line.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, and a terminal device for touch erasing and interference resistance, so as to solve the problems in the prior art that an electronic whiteboard is not completely erased and an erasing edge has interference of a drawn line.
A first aspect of an embodiment of the present invention provides an anti-interference method for touch erase, including:
detecting a trigger signal of an erasing action;
if the trigger signal of the erasing action is detected, determining a current touch point according to the trigger signal;
changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point;
the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface.
A second aspect of the embodiments of the present invention provides a touch erase anti-interference device, including:
the signal detection module is used for detecting a trigger signal of an erasing action;
the touch control determining module is used for determining a current touch control point according to the trigger signal if the trigger signal is detected;
the erasing surface changing module is used for changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point;
the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface.
A third aspect of an embodiment of the present invention provides a terminal device, including: the touch control erasing anti-interference method comprises a touch display, a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor executes the computer program to realize the steps of the touch control erasing anti-interference method.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned touch erase anti-interference method are implemented.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the embodiment of the invention, after the trigger signal of the erasing action is detected, the first erasing surface corresponding to the current touch point can be changed into the second erasing surface, so that the problem that the erasing is incomplete or the erasing edge has line drawing interference when a user erases the electronic whiteboard through a palm is solved; the palm erasing area is more stable, the erasing position is more accurate, the user can quickly and accurately complete the erasing effect, and the palm erasing device has high usability and practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a palm contact surface in a touch erasing process according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an edge scribe interference in a touch erasing process according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of the touch erase anti-interference method according to an embodiment of the present invention;
FIG. 4 is an exemplary diagram of a first erase plane being changed to a second erase plane according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a touch erase tamper resistant device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 3 is a schematic flow chart of an implementation of the method for touch erasing and interference resistance provided by the embodiment of the present invention, where the method is applicable to palm touch erasing operation based on an infrared electronic whiteboard, and writing and erasing operations of a terminal device including a touch display screen, where the terminal device may be a tablet computer or an electronic reader, and the like, and by using the method, the electronic whiteboard or the terminal device can support simultaneous writing and erasing actions without generating interference of edge lines in an erasing process; the specific method comprises the following steps:
in step S301, a trigger signal for an erase operation is detected.
In this embodiment, the terminal or the electronic whiteboard may detect an erasing trigger signal on the touch display screen, where the erasing trigger signal may be a signal triggered by a touch operation of a palm of a user on the touch display screen.
Further, before detecting the trigger signal of the erasing action, the method further comprises:
a trigger signal is received.
In this embodiment, the trigger signal may be a trigger signal generated by a finger touching the display screen or a trigger signal generated by a palm touching the display screen.
And determining touch point information according to the trigger signal.
In this embodiment, the touch point information includes a touch point position and contact area information corresponding to the touch point; because the data acquisition mode based on the infrared touch display screen is in a point form, the touch position and the contact area of the eraser or the palm on the touch display screen are acquired.
And judging whether the contact area corresponding to the touch point is larger than a preset threshold value or not according to the touch point information.
In this embodiment, the touch point corresponding to the trigger signal may be a touch point determined when a writing operation is performed, or may be a touch point determined when an erasing operation is performed; recognizing writing and erasing actions according to the contact area corresponding to the touch point and a preset threshold value; the threshold value may be specifically determined according to the recognition accuracy or resolution of the touch display screen.
If so, judging that the trigger signal is a trigger signal of an erasing action; and if not, judging that the trigger signal is the trigger signal of the line drawing action.
In this embodiment, the contact area corresponding to the touch point of the writing action is smaller than the contact area corresponding to the touch point of the erasing action, and in the actual operation process, the current trigger signal can be identified by comparing the contact area corresponding to the touch point with the threshold value, and is the erasing action trigger signal or the line drawing action trigger signal.
Step S302, if a trigger signal of the erasing action is detected, determining a current touch point according to the trigger signal.
In this embodiment, after the electronic whiteboard or other terminal equipment detects the trigger signal of the erasing action, the current touch point, which may be one or more touch points, may be re-determined according to the trigger signal, and after the trigger signal of the erasing action is detected, the current touch point is re-determined according to the trigger position of the trigger signal on the touch display screen, as shown in fig. 1, it may be one touch point a1 or three touch points a1, a2, and A3.
Step S303, changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point.
In this embodiment, since the number of the current touch points is different from the number of the previous touch points, and the position information corresponding to the touch points is also different, the first erasing surface can be changed into the second erasing surface according to the position of the current touch point and the contact surface corresponding to each touch point. The first erasing surface is a contact surface corresponding to the current touch point, the contact surface corresponding to the current touch point can be one or a plurality of sets, and the contact surface corresponding to the current touch point can be a contact surface corresponding to one touch point or a connected or disconnected contact surface corresponding to a plurality of touch points; the second erasing surface can be a circular erasing surface, an oval erasing surface or a rectangular erasing surface, and the area of the second erasing surface is larger than that of the first erasing surface; the second erasing surface can determine the size of the erasing area according to the size of the palm, and can also determine the second erasing surface according to the position information of the current touch point. With the change of the re-determined current touch point, the first erasing surface is changed; the corresponding second erase surface is also changed.
It should be noted that after the first erasing surface is changed into the second erasing surface, the second erasing surface is a complete and enlarged erasing surface, and when the erasing action is performed by palm touch, the erasing can be ensured to be clean, and the phenomenon of erasing missing or erasing edge line drawing interference and the like caused by unstable contact surfaces can be avoided, so that the user operation is more accurate.
Further, changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point includes:
detecting whether a second touch point exists in a preset area away from the current touch point;
if the current touch point exists, a circular second erasing surface or an oval second erasing surface is constructed according to the current touch point and the second touch point.
In this embodiment, the electronic whiteboard or other terminal devices may display the erasing surface corresponding to the current touch point on the touch display screen. During the erasing process, the erase trace may be represented by several erase planes. If only one current touch point is determined again, whether a second touch point corresponding to a second trigger signal exists in a preset area away from the current touch point can be detected at the same time, the preset area can be within a range of 5-6 centimeters away from the current touch point, as shown in fig. 4a, if two points of a1, a2 and A3 exist, a third point can be determined according to the current touch point and the second touch point, and a circular second erasing surface or an elliptical second erasing surface is constructed.
Further, the constructing a circular second erasing surface or an elliptical second erasing surface according to the current touch point and the second touch point includes:
constructing an equilateral triangle according to the current touch point, the second touch point and a connecting line between the two points;
determining a circumscribed circle of the equilateral triangle according to the equilateral triangle;
and taking the circumcircle as the circular second erasing surface.
In this embodiment, a third point may be determined according to the current touch point, the second touch point, the line between the two points, and the characteristics of the equilateral triangle, so as to construct the equilateral triangle; according to the equilateral triangle, as shown in fig. 4a, the circumscribed circle of the equilateral triangle A1A2a3 is used as the second erasing surface, and the erasing area is close to the whole palm area no matter how the contact area is, so that the user can erase more accurately and cleanly.
Further, the changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point further includes:
and if the first erasing surface does not exist, directly amplifying the first erasing surface by a preset multiple to form a circular erasing surface, and taking the circular erasing surface as a circular second erasing surface.
In this embodiment, the preset multiple may be determined according to a specific size of the palm, the first erasing surface is directly enlarged to an erasing surface close to the size of the palm according to the size of the palm, and the enlarged erasing surface may be circular or elliptical.
Further, the second erasing surface which is circular or elliptical is constructed according to the current touch point and the second touch point, and the method further includes:
constructing an ellipse circumscribed to the circumscribed circle according to the circumscribed circle or the circular erasing surface, wherein the long axis of the ellipse is vertical to the erasing direction;
and taking the ellipse as the second erasing surface of the ellipse.
In this embodiment, a side edge of the circumscribed circle or the circular erasing surface close to the palm bottom, which is large near the palm, is used as a tangent point to construct a circumscribed ellipse of the circumscribed circle or the circular erasing surface, as shown in fig. 4b, the constructed circumscribed ellipse can cover the range of the fingers to form an elliptical second erasing surface, writing operation cannot be performed within the range of the elliptical second erasing surface, and it is ensured that no interference line occurs during the palm erasing process.
According to the embodiment, after a trigger signal of an erasing action is detected, a current touch point is determined, and a first erasing surface corresponding to the current touch point is changed into a second erasing surface with a larger area, so that the problems of unclean erasing and line drawing interference at an erasing edge caused by unstable contact area in the process of erasing operation by a user using a palm are solved; the palm erasing area is more stable, the erasing position is more accurate, and the user can quickly and accurately complete the erasing effect.
It should be noted that, within the technical scope of the present disclosure, other sequencing schemes that can be easily conceived by those skilled in the art should also be within the protection scope of the present disclosure, and detailed description is omitted here.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 5 is a schematic diagram of the touch erase immunity device according to the embodiment of the present invention, and for convenience of description, only the relevant portions of the touch erase immunity device according to the embodiment of the present invention are shown.
The touch erasing anti-interference device comprises:
a signal detection module 51, configured to detect a trigger signal of an erase operation;
a touch determination module 52, configured to determine a current touch point according to the trigger signal if the trigger signal is detected;
an erasing surface changing module 53, configured to change a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point;
the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface.
Further, the apparatus further comprises:
the signal receiving module is used for receiving a trigger signal;
the touch information judgment module is used for determining touch point information according to the trigger signal; judging whether the contact area corresponding to the touch point information is larger than a preset threshold value or not according to the touch point information; if so, judging that the trigger signal is a trigger signal of an erasing action; and if not, judging that the trigger signal is the trigger signal of the line drawing action.
According to the embodiment, after the trigger signal of the erasing action is detected, the current touch point is determined, and the first erasing surface corresponding to the current touch point is changed into the second erasing surface with a larger area, so that the problems that the erasing is not clean and the erasing edge has line drawing interference due to unstable contact area in the process of erasing operation by using a palm of a user are solved; the palm erasing area is more stable, the erasing position is more accurate, and the user can quickly and accurately complete the erasing effect.
It will be apparent to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely illustrated, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the mobile terminal is divided into different functional units or modules to perform all or part of the above described functions. Each functional module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional modules are only used for distinguishing one functional module from another, and are not used for limiting the protection scope of the application. The specific working process of the module in the mobile terminal may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
Fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 6, the terminal device 6 of this embodiment includes: a touch display, a processor 60, a memory 61 and a computer program 62 stored in said memory 61 and executable on said processor 60. The processor 60, when executing the computer program 62, implements the steps in the above-described embodiments of the method for touch erase immunity, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 60, when executing the computer program 62, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the modules 51 to 53 shown in fig. 5.
Illustratively, the computer program 62 may be partitioned into one or more modules/units that are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the terminal device 6.
The terminal device may include, but is not limited to, a processor 60, a memory 61. Those skilled in the art will appreciate that fig. 6 is merely an example of a terminal device 6 and does not constitute a limitation of terminal device 6 and may include more or less components than those shown, or some components in combination, or different components, for example, the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the terminal device 6, such as a hard disk or a memory of the terminal device 6. The memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the terminal device 6. The memory 61 is used for storing the computer program and other programs and data required by the terminal device. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A touch erase anti-interference method is characterized by comprising the following steps:
detecting a trigger signal of an erasing action;
if the trigger signal of the erasing action is detected, determining a current touch point according to the trigger signal;
changing a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point, wherein the changing comprises the following steps:
detecting whether a second touch point exists in a preset area away from the current touch point; the preset area is 5-6 cm away from the current touch point;
if the current touch point exists, constructing a circular second erasing surface or an elliptical second erasing surface according to the current touch point and the second touch point;
if the first erasing surface does not exist, the first erasing surface is directly amplified by a preset multiple to form a circular erasing surface, and the circular erasing surface is used as a circular second erasing surface;
the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface and is a complete enlarged erasing surface.
2. The touch erase tamper resistant method of claim 1, wherein prior to detecting a trigger signal for an erase action, the method further comprises:
receiving a trigger signal;
determining touch point information according to the trigger signal;
judging whether the contact area corresponding to the touch point is larger than a preset threshold value or not according to the touch point information;
if so, judging that the trigger signal is a trigger signal of an erasing action;
and if not, judging that the trigger signal is the trigger signal of the line drawing action.
3. The touch erase immunity method of claim 1, wherein constructing a circular second erase surface or an elliptical second erase surface based on the current touch point and the second touch point comprises:
constructing an equilateral triangle according to the current touch point, the second touch point and a connecting line between the two points;
determining a circumscribed circle of the equilateral triangle according to the equilateral triangle;
and taking the circumcircle as the circular second erasing surface.
4. The touch erase immunity method of claim 3, wherein the second erase surface is configured to be circular or elliptical according to the current touch point and the second touch point, further comprising:
constructing an ellipse circumscribed to the circumscribed circle according to the circumscribed circle or the circular erasing surface, wherein the long axis of the ellipse is vertical to the erasing direction;
and taking the ellipse as the second erasing surface of the ellipse.
5. An anti-jamming unit is erased in touch-control, its characterized in that includes:
the signal detection module is used for detecting a trigger signal of an erasing action;
the touch control determining module is used for determining a current touch control point according to the trigger signal if the trigger signal is detected;
an erasing surface changing module, configured to change a first erasing surface corresponding to the current touch point into a second erasing surface according to the current touch point, including:
detecting whether a second touch point exists in a preset area away from the current touch point; the preset area is 5-6 cm away from the current touch point;
if the current touch point exists, constructing a circular second erasing surface or an elliptical second erasing surface according to the current touch point and the second touch point;
if the first erasing surface does not exist, the first erasing surface is directly amplified by a preset multiple to form a circular erasing surface, and the circular erasing surface is used as a circular second erasing surface;
the first erasing surface is a contact surface corresponding to the current touch point, and the area of the second erasing surface is larger than that of the first erasing surface and is a complete enlarged erasing surface.
6. The touch erase immunity device of claim 5, further comprising:
the signal receiving module is used for receiving a trigger signal;
the touch information judgment module is used for determining touch point information according to the trigger signal; judging whether the contact area corresponding to the touch point information is larger than a preset threshold value or not according to the touch point information; if so, judging that the trigger signal is a trigger signal of an erasing action; and if not, judging that the trigger signal is the trigger signal of the line drawing action.
7. Terminal device comprising a touch display, a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor realizes the steps of the method according to any of claims 1 to 4 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| CN201810821342.8A CN109189259B (en) | 2018-07-24 | 2018-07-24 | Touch erase anti-interference method and device and terminal equipment |
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| TWI555509B (en) * | 2015-11-10 | 2016-11-01 | 鋐雩科技有限公司 | Electrode device for wearable or portable apparatus |
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