CN107291367A - Use method and device of eraser - Google Patents

Abstract

The present invention is applicable to the technical field of learning software, and provides a method and device for using an eraser, wherein the method for using the eraser comprises: starting the learning software, displaying a draft paper function; when the draft paper function is selected, displaying an operation prompt of the eraser function; acquiring touch data in the touch screen; determining the operation mode of the finger on the touch screen according to the touch data; and when the determined operation mode is a multi-point operation mode, switching from a drawing function or a writing function to an eraser function. The present invention can switch from a drawing function or a writing function to an eraser function without clicking an eraser icon, and since there is no need to click the eraser to switch back and forth, the complexity of the operation is reduced, which is conducive to improving the operation efficiency.

Description

Method and device for using an eraser

technical field

The invention belongs to the technical field of learning software, and relates to a method and a device for using an eraser.

Background technique

With the progress of society and the development of science and technology, the use of tablet computers is becoming more and more common, and there are more and more learning software on the tablet computers. And there are mathematics learning software and drawing learning software in these learning software. Mathematics learning software generally uses draft paper, and the eraser function is a must on the draft paper.

There will also be an eraser function in the drawing learning software. However, it has been observed that when experiencing the eraser function, you need to click an icon similar to the eraser to switch from the drawing function to the eraser function, or from the writing function to the eraser function. Inconvenient, and not conducive to improving operational efficiency.

Contents of the invention

In view of this, the embodiments of the present invention provide a method and device for using an eraser, aiming at solving the problem of cumbersome switching steps in the process of using the eraser function, which is not conducive to improving operation efficiency.

The first aspect of the embodiments of the present invention provides a method for using an eraser, including:

Start the learning software and display the scratch paper function;

When the scratch paper function is selected, an operation prompt of the eraser function is displayed;

Obtain the touch data in the touch screen;

Determine the operation mode of the finger on the touch screen according to the touch data;

When the determined operation mode is the multi-point operation mode, switch from the drawing function or the writing function to the eraser function.

The second aspect of the embodiment of the present invention provides a device for using an eraser, including:

The scratch paper function display module is used to start the learning software and display the scratch paper function;

The operation prompt module is used to display the operation prompt of the eraser function when the scratch paper function is selected;

A touch data acquisition module, configured to acquire touch data in the touch screen;

An operation mode determination module, configured to determine the operation mode of the finger on the touch screen according to the touch data;

The eraser function usage module is used to switch from the drawing function or writing function to the eraser function when the determined operation mode is a multi-point operation mode.

The third aspect of the embodiment of the present invention provides a device/terminal device for using an eraser, including a memory, a processor, and a computer program stored in the memory and operable on the processor, the processor The steps of the above method are realized when the computer program is executed.

A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

The beneficial effect that the embodiment of the present invention exists compared with prior art is:

The eraser function in the draft paper does not need to click the eraser to switch back and forth after using multi-point operation, which reduces the complexity of the operation. Such functional interaction brings convenience to the user experience to a certain extent, and is conducive to Improve operational efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is the realization flowchart of the using method of the eraser that the embodiment of the present invention provides;

Fig. 2 is the application example diagram of the eraser using method provided by the embodiment of the present invention;

Fig. 3 is a structural block diagram of the device for using the eraser provided by the embodiment of the present invention;

Fig. 4 is a schematic block diagram of a mobile terminal provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude one or more other features. , whole, step, operation, element, component and/or the presence or addition of a collection thereof.

It should also be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.

It should also be further understood that the term "and/or" used in the description of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

As used in this specification and the appended claims, the term "if" may be construed as "when" or "once" or "in response to determining" or "in response to detecting" depending on the context . Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, to mean "once determined" or "in response to the determination" or "once detected [the described condition or event] ]” or “in response to detection of [described condition or event]”.

In a specific implementation, the mobile terminals described in the embodiments of the present invention include but are not limited to other portable devices such as mobile phones, laptop computers or tablet computers with touch-sensitive surfaces (for example, touch screen displays and/or touch pads) . It should also be appreciated that in some embodiments, the device is not a portable communication device, but a desktop computer with a touch-sensitive surface (eg, a touchscreen display and/or a touchpad).

In the ensuing discussion, a mobile terminal including a display and a touch-sensitive surface is described. However, it should be understood that a mobile terminal may include one or more other physical user interface devices such as a physical keyboard, mouse and/or joystick.

The mobile terminal supports various applications such as one or more of the following: drawing application, presentation application, word processing application, website creation application, disk burning application, spreadsheet application, game application, telephone applications, video conferencing applications, email applications, instant messaging applications, exercise support applications, photo management applications, digital camera applications, digital video camera applications, web browsing applications, digital music player applications and/or digital video player applications.

Various applications that can be executed on the mobile terminal can use at least one common physical user interface device, such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and corresponding information displayed on the terminal may be adjusted and/or changed between applications and/or within the respective applications. In this way, the common physical architecture (eg, touch-sensitive surface) of the terminal can support various applications with a user interface that is intuitive and transparent to the user.

In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

Embodiment one

With reference to Fig. 1, Fig. 1 is the implementation flowchart of the method for using the eraser provided by the embodiment of the present invention, the method is applied to a mobile terminal, as shown in Fig. 1, the method for using the eraser may include the following steps:

In step S101, start the learning software to display the draft paper function;

In step S102, when the scratch paper function is selected, an operation prompt of the eraser function is displayed;

Wherein, step S102 is specifically:

After the scratch paper function is selected, it is judged whether the scratch paper function is used for the first time, and if the scratch paper function is used for the first time, an operation prompt of the eraser function is displayed.

After the scratch paper function is selected, obtain the use times of the scratch paper function, if the use count of the scratch paper function is zero, it is judged that the scratch paper function is used for the first time, and an operation prompt of the eraser function is displayed.

In step S103, the touch data in the touch screen is acquired;

In step S104, determine the operation mode of the finger on the touch screen according to the touch data;

The touch event transmitted by the touch screen is received in real time through the preset data transmission interface of the touch screen. The touch event includes a touch press event, a touch lift event, and a touch move event.

If there is a single touch point in the touch press event, it is determined that the operation mode of the finger on the touch screen is a single-point operation mode; if there are multiple touch points in the touch press event, it is determined that the operation mode of the finger on the touch screen is Multi-point operation mode.

In step S105, when the determined operation mode is the multi-point operation mode, switch from the drawing function or the writing function to the eraser function.

In the area where the handwriting is located, record the movement track of the finger

Step S105 has two implementation modes, which are described in detail as follows:

The first implementation mode:

According to the multi-point operation mode, the drawing function or writing function is switched to the eraser function, and by recording the movement trajectory of the finger on the touch screen, the handwriting in the area where the movement trajectory needs to be erased is erased.

The second implementation mode:

If there are two or more fingers on the touch screen, the eraser function will be executed, and the drawing function or writing function will be turned off;

In the area where the handwriting is located, record the movement trajectory of the finger, and use the background color to fill the overlapping part of the movement trajectory and the handwriting to eliminate the handwriting left by the previous touch screen.

For ease of illustration, an example is as follows:

If the operation mode of the finger on the touch screen is a single-point operation mode, switch the eraser function to the writing function, and obtain the user's handwriting by recording the movement track of the finger on the touch screen;

If the operation mode of the finger on the touch screen is a multi-point operation mode, the writing function is switched to the eraser function, and by recording the movement track of the finger on the touch screen, the handwriting in the area where the movement track needs to be erased is erased.

Furthermore, in the second embodiment, after recording the movement trajectory of the finger in the area where the handwriting is located, it is always detected whether a touch press event transmitted by the touch screen is received until the preset time threshold is reached. In the segment, the touch press event transmitted by the touch screen is not received, and the background color is used to fill the overlapping part of the motion track and the handwriting to eliminate the handwriting left by the previous touch screen.

In the embodiment of the present invention, the eraser function in the draft paper can be switched from the drawing function or the writing function to the eraser function without clicking the icon of the eraser after using multi-point operation, because there is no need to click the eraser to switch back and forth , thus reducing the complexity of the operation. Such functional interaction, to some extent, brings convenience to the user experience and is conducive to improving operational efficiency.

Embodiment two

Referring to FIG. 2, FIG. 2 is an application sample diagram of the method for using the eraser provided by the embodiment of the present invention. The method for using the eraser is applied to a mobile terminal. As shown in FIG. 2, the method for using the eraser may include the following steps:

S201, enter the learning software, and use the scratch paper function;

S202, is it the first time to use it? If yes, execute S204, otherwise execute S203;

S203, judging whether the finger touch is a single point, if yes, execute S205, otherwise execute S207;

S204, giving an operation prompt for the writing function and the eraser function;

S205, single-finger operation and writing;

S206, do you need to modify it? If yes, execute S207, otherwise execute S205;

S207, judging whether the finger touch is multi-point, if yes, execute S208, otherwise, execute S203;

S208, execute an eraser function to erase the area to be erased.

Among them, the operation prompts for the drawing function and the writing function are similar, and will not be described in detail here.

For the sake of illustration, an example is as follows:

In the process of using the learning software, if the scratch paper function is selected, it will enter the use of the scratch paper function, and judge whether it is the first time for the user to use the scratch paper function. If it is the first time, an operation prompt will be given: first a finger appears, Swipe on the screen to signal the user to follow the prompts to perform corresponding operations, and the operation will remain until the user performs the correct operation.

After the user performs the correct operation and removes the finger, a prompt for the next step is given. Prompt to swipe multiple fingers on the screen, and a prompt text appears on the screen at the same time: Two or more fingers operate. After the user performs the correct operation, if the operation area touches the previous handwriting, the touched area of the previous handwriting will be cleared. After the user's finger leaves the screen, all the handwriting on the screen will be cleared, and a text will appear: Now the question can be answered.

The user's finger touches the draft paper, and the user's intention to use is judged according to the number of touch points. When there is only one touch point on the screen, it is determined that the user uses the writing function, and then according to the movement trajectory of a single finger, the movement trajectory is recorded to obtain the user's handwriting.

When there are two or more touch points, it is judged that the user uses the eraser function. If the area to be modified is too small, you can place one finger on the area to be modified and the other finger on the blank area. A blank area is an area without handwriting. Then, judge whether the finger of the user has displacement, and if there is displacement, then record the movement trajectory, record the trajectory record in the view form of the characteristic of the background color, and cover the handwriting left by the previous touch screen.

On the basis of the first embodiment, the embodiment of the present invention adds "prompts for the operation of the writing function and the eraser function", so that the user can freely switch between the writing function and the eraser function only through single-point or multi-point operation. Eraser function, or switch drawing function and eraser function to improve user experience.

It should be understood that the sequence numbers of the steps in the first and second embodiments above do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute a component of the implementation process of the embodiment of the present invention. Any restrictions.

Embodiment three

Corresponding to the usage methods described in Embodiments 1 and 2 above, refer to FIG. 3. FIG. 3 is a structural block diagram of a device for using an eraser provided in an embodiment of the present invention, which is applied to a mobile terminal, and the mobile terminal includes but is not limited to a camera, Mobile Phone, Pocket Personal Computer (PPC), PDA, Computer, Notebook, Personal Digital Assistant (PDA), MP4, MP3. For ease of description, only the parts related to this embodiment are shown. For ease of description, only the parts related to this embodiment are shown.

With reference to Fig. 3, the use device of this eraser comprises:

Scratch paper function display module 31, used to start learning software, display scratch paper function;

An operation prompt module 32, configured to display an operation prompt for the eraser function when the scratch paper function is selected;

A touch data acquisition module 33, configured to acquire touch data in the touch screen;

An operation mode determination module 34, configured to determine the operation mode of the finger on the touch screen according to the touch data;

The eraser function using module 35 is used to switch from the drawing function or writing function to the eraser function when the determined operation mode is a multi-point operation mode.

As an implementation of this embodiment, in the device for using the eraser, the operation prompting module is specifically used for the operation prompting module to determine whether the draft paper function is selected after the draft paper function is selected. It is used for the first time, if the scratch paper function is used for the first time, an operation prompt of the eraser function will be displayed.

As an implementation of this embodiment, in the device for using the eraser, the eraser function usage module is specifically used to, according to the multi-point operation mode, if the operation mode of the finger on the touch screen is The function or writing function is switched to the eraser function. By recording the movement trajectory of the finger on the touch screen, the handwriting in the area where the movement trajectory needs to be erased is erased.

As an implementation of this embodiment, in the device for using the eraser, the eraser function usage module is specifically used to execute the eraser function if there are two or more touch points of the finger on the touch screen , turn off the drawing function or writing function; in the area where the handwriting is located, record the movement trajectory of the finger, and fill the overlapping part of the movement trajectory and the handwriting with the background color to eliminate the handwriting left by the previous touch screen.

As an implementation of this embodiment, the device for using the eraser also includes:

The single-point operation module is used to switch from the eraser function to the drawing function or the writing function when the determined operation mode is the single-point operation mode. .

Embodiment four

A mobile terminal, the mobile terminal comprising:

processors and input devices,

The processor is used to start the learning software, display the scratch paper function, and when the scratch paper function is selected, display the operation prompt of the eraser function, and obtain the touch data in the touch screen through the input device;

The processor is further configured to determine the operation mode of the finger on the touch screen according to the touch data, and switch from the drawing function or the writing function to the eraser function when the determined operation mode is a multi-point operation mode.

Referring to FIG. 4 , FIG. 4 is a schematic block diagram of a mobile terminal provided by an embodiment of the present invention. The mobile terminal as shown in the figure may include: one or more processors 401 (only one is shown in the figure); one or more input devices 402 (only one is shown in the figure), one or more output devices 403 (only one is shown in the figure), memory 404 and display 405 . The aforementioned processor 401 , input device 402 , output device 403 , memory 404 and display 405 are connected through a bus 406 . The memory 402 is used to store instructions, and the processor 401 is used to execute the instructions stored in the memory 402 . in:

The processor 401 is configured to determine whether the scratch paper function is used for the first time after the scratch paper function is selected, and display an operation prompt for the eraser function if the scratch paper function is used for the first time .

The processor 401 is also used to switch the drawing function or writing function to the eraser function according to the multi-point operation mode if the operation mode of the finger on the touch screen is a multi-point operation mode, by recording the movement track of the finger on the touch screen, erasing Delete the handwriting that needs to be erased in the area where the motion track is located.

The processor 401 is also used to execute the eraser function, close the drawing function or the writing function if there are two or more touch points of the fingers on the touch screen; The background color fills the overlapped portion of the motion track and the handwriting to eliminate the handwriting left by the previous touch screen.

The processor 401 is also used to execute the eraser function if there are two or more touch points of the finger on the touch screen; record the movement track of the finger in the area where the handwriting is located, and fill the movement track and handwriting with the background color Overlap parts to remove handwriting left by previous touch screens.

The processor 401 is also configured to switch from the eraser function to the drawing function or the writing function when the determined operation mode is a single-point operation mode

The memory 404 is used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 404, so as to obtain resources corresponding to the preset events.

It should be understood that, in the embodiment of the present invention, the processor 401 may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), dedicated Integrated Circuit (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like.

The input device 402 may include a touch panel, a fingerprint sensor (for collecting user's fingerprint information and fingerprint direction information), a microphone, a data receiving interface, and the like. The output device 403 may include a display (LCD, etc.), a speaker, a data sending interface, and the like.

The memory 404 may include read-only memory and random-access memory, and provides instructions and data to the processor 401 . A portion of memory 404 may also include non-volatile random access memory. For example, memory 404 may also store device type information.

The display 405 can be used to display information input by the user or information provided to the user, and the like. The display 405 may include a display panel, and optionally, the display panel may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like. Further, the display 405 may also include a touch panel, and the touch panel may cover the display panel, and when the touch panel detects a touch operation on or near it, it is sent to the processor 401 to determine the location of the touch event. type, and then the processor 401 provides corresponding visual output on the display panel according to the type of the touch event.

In specific implementation, the processor 401, input device 402, output device 403, memory 404, and display 405 described in the embodiment of the present invention can execute the implementation described in the embodiment of the information processing method provided in the embodiment of the present invention , the implementation manner described in the mobile terminal described in Embodiment 4 may also be implemented, which will not be repeated here.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the above system, reference may be made to the corresponding process in the foregoing method embodiments, and details will not be repeated here.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can 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 invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage In the medium, several instructions are included to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions recorded in the examples, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should be included in within the protection scope of the present invention.

Claims (10)

1. a kind of application method of erasing rubber, it is characterised in that including：

Start learning software, show foul papers function；

After the foul papers function is chosen, the operation indicating of erasing rubber function is shown；

Obtain the touch data in touch-screen；

Mode of operation of the finger in touch-screen is determined according to the touch data；

When it is determined that mode of operation be multipoint operation mode when, be switched to erasing rubber function from drawing function or writing function.

2. application method as claimed in claim 1, it is characterised in that after the foul papers function is chosen, show rubber The operation indicating of function is wiped, is specially：

After the foul papers function is chosen, judge whether foul papers function is used for the first time, if the foul papers work( Can be used for the first time, then show the operation indicating of erasing rubber function.

3. application method as claimed in claim 1, it is characterised in that described when the mode of operation determined is multipoint operation mode When, erasing rubber function is switched to from drawing function or writing function, is specially：

According to multipoint operation mode, drawing function or writing function are switched into erasing rubber function, touched by recording finger The movement locus on screen is touched, erasing needs to wipe the person's handwriting of movement locus region.

4. application method as claimed in claim 1, it is characterised in that described when the mode of operation determined is multipoint operation mode When, erasing rubber function is switched to from drawing function or writing function, is specially：

If finger touch-screen touch points be two or more, then perform erasing rubber function, close drawing function or Person's writing function；

In the region where person's handwriting, the movement locus of finger is recorded, movement locus and person's handwriting coincidence part are filled using background color Point, the person's handwriting left with touch-screen before elimination.

5. application method as claimed in claim 1, it is characterised in that the application method, in addition to：

When it is determined that mode of operation be single-point mode of operation when, be switched to drawing function or writing function from erasing rubber function.

6. a kind of use device of erasing rubber, it is characterised in that including：

Foul papers function display module, for starting learning software, shows foul papers function；

Operation indicating module, for after the foul papers function is chosen, showing the operation indicating of erasing rubber function；

Touch data acquisition module, for obtaining the touch data in touch-screen；

Mode of operation determining module, for determining mode of operation of the finger in touch-screen according to the touch data；

Erasing rubber function uses module, for when it is determined that mode of operation be multipoint operation mode when, from drawing function or write Word function is switched to erasing rubber function.

7. use device as claimed in claim 6, it is characterised in that the operation indicating module is specifically for when the rough draft After paper function is chosen, judge whether foul papers function is used for the first time, if the foul papers function is to be made for the first time With then showing the operation indicating of erasing rubber function；

The erasing rubber function uses module specifically for according to multipoint operation mode, if finger is in the mode of operation of touch-screen For multipoint operation mode, drawing function or writing function are switched into erasing rubber function, by recording finger on the touchscreen Movement locus, erasing needs to wipe the person's handwriting of movement locus region.

8. use device as claimed in claim 6, it is characterised in that if the erasing rubber function using module specifically for Finger is two or more in the touch points of touch-screen, then performs erasing rubber function, closes drawing function or the work(that writes Energy；In the region where person's handwriting, the movement locus of finger is recorded, movement locus and person's handwriting coincidence part are filled using background color Point, the person's handwriting left with touch-screen before elimination；

The use device, in addition to：Single-point operation module, for when it is determined that mode of operation be single-point mode of operation when, from Erasing rubber function is switched to drawing function or writing function.

9. a kind of use device/terminal device of erasing rubber, including memory, processor and it is stored in the memory simultaneously The computer program that can be run on the processor, it is characterised in that real during computer program described in the computing device Now such as the step of any one of claim 1 to 5 methods described.

10. a kind of computer-readable recording medium, the computer-readable recording medium storage has computer program, its feature exists In the step of realizing such as any one of claim 1 to 5 methods described when the computer program is executed by processor.