WO2011131005A1

WO2011131005A1 - Method for implementing eraser function, mobile terminal and touch pen for mobile terminal

Info

Publication number: WO2011131005A1
Application number: PCT/CN2010/079086
Authority: WO
Inventors: 陈硕
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-04-19
Filing date: 2010-11-24
Publication date: 2011-10-27
Also published as: CN102221955A

Abstract

A Method for implementing eraser function, a mobile terminal and a touch pen for the mobile terminal are provided. The method includes: responding to the touching operation of the user to the resistance touch screen of the mobile terminal, computing the resistance values of touch points; judging if the resistance values are meeting the erasure condition; when the resistance values are meeting the erasure condition，measuring to obtaining the position region of the touch points, and implementing erasure operation to the characters within the position region.

Description

Eraser function implementation method, mobile terminal and

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to an eraser function implementation method, a mobile terminal, and a stylus for a mobile terminal. BACKGROUND OF THE INVENTION It is well known that short message services have created tens of billions of market revenue for the mobile communications industry. As people get used to sending and receiving text messages while communicating, handwriting input has become a growing demand for mobile phone users. Handwriting input means that the mobile phone user can handwrite on the screen of the mobile phone through the built-in stylus, and the mobile phone converts various fonts handwritten by the internal recognition system to the mobile phone screen, so that it can be displayed on the screen of the mobile phone. Greatly increase the speed of the input. Currently, mobile phones with handwriting input are becoming more and more popular. However, in the related art, since the touch screen used on the mobile phone is mainly a resistive touch screen, the stylus can only record the X-axis coordinate value and the Y-axis coordinate value of the touch point on the LCD, so in the handwriting process It can only implement the writing function, and it can't use the stylus and the touch screen to achieve multiple functions, just like the tablet using the electromagnetic induction method. When the user inputs an error, the handwriting method must be discarded, and the wrong characters are still deleted one by one using the buttons, so the user operation is very inconvenient and the experience is low. SUMMARY OF THE INVENTION The present invention has been made in view of the related art in which a user deletes an erroneous character one by one using a button on a resistive touch screen, and the operation is inconvenient and the experience is low. Therefore, the main object of the present invention is to provide an improved eraser function. The method, the mobile terminal and the stylus for the mobile terminal solve at least one of the above problems. According to an aspect of the invention, an eraser function implementation method is provided. The method for implementing the eraser function according to the present invention includes: calculating a resistance value of the touch point in response to a user's touch operation on the resistive touch screen of the mobile terminal; determining whether the resistance value satisfies an erase condition; and satisfying the erase condition at the resistance value When measuring, the position interval of the touch point is obtained; and the position area is The characters in the space perform an erase operation. Determining whether the resistance value satisfies the erasing condition includes: comparing the resistance value with the set threshold value; determining that an erasing operation needs to be performed according to the comparison result. The threshold value includes: a first threshold; determining, according to the comparison result, that the erasing operation needs to be performed includes: determining that an erasing operation needs to be performed when the first threshold value is a resistance value. The threshold further includes: a second threshold, wherein the second threshold is greater than the first threshold; determining, according to the comparison result, that the erasing operation needs to be performed comprises: determining that an erasing operation needs to be performed when the first threshold <the resistance value < the second threshold. When the resistance value is greater than the second threshold, it is determined that the resistive touch screen does not acquire the touch operation instruction; when the resistance value is less than the first threshold, it is determined that the mobile terminal is in the writing state. The material and the contact area of the tail of the stylus are set, wherein the rigidity and the contact area of the material are suitable for providing a resistance value satisfying the erasing condition when the tail of the stylus is subjected to a touch operation on the resistive touch screen of the mobile terminal . The above method further includes: setting an erasing condition according to a resistance value generated when a tail of the stylus is performed on a touch operation of the resistive touch screen of the mobile terminal. According to another aspect of the present invention, a mobile terminal is provided. The mobile terminal according to the present invention includes: a resistive touch screen, a processor, and a stylus, wherein the processor includes: a calculation module, configured to calculate a resistance value of the touch point in response to a touch operation of the touch pen on the resistive touch screen; The determining module is configured to determine whether the resistance value satisfies an erasing condition; and the processing module is configured to: when the output of the determining module is YES, measure a position interval of acquiring the touch point, and perform an erasing operation on the character in the position interval. The judging module comprises: a comparing module, configured to compare the resistance value with the set threshold; and the determining module is configured to determine whether the erasing operation needs to be performed according to the comparison result. The threshold includes: a first threshold; and a determining module configured to determine that an erasing operation needs to be performed when the first threshold <resistance value. The threshold further includes: a second threshold, wherein the second threshold is greater than the first threshold; and the determining module is configured to determine that an erasing operation needs to be performed when the first threshold <the resistance value < the second threshold. The determining module is configured to: when the resistance value is greater than the second threshold, determine that the resistive touch screen does not acquire the touch operation instruction, and determine that the mobile terminal is in the writing state when the resistance value is less than the first threshold. According to still another aspect of the present invention, a stylus for a mobile terminal is provided. The material rigidity and the contact area of the tail portion of the stylus for a mobile terminal according to the present invention are suitable for providing a touch operation for the resistive touch screen of the mobile terminal when the tail of the stylus is performed. resistance. According to the present invention, when the user touches the resistive touch screen of the mobile terminal, calculating the resistance value of the touch point; determining, according to the magnitude of the resistance value, performing an erasing operation, measuring a position interval of acquiring the touch point, and Characters within the location interval perform the erase operation. The invention solves the problem that the user deletes the wrong character one by one by using the button on the resistive touch screen in the related art, and the operation is inconvenient and the experience is low, and the eraser function can be implemented on the mobile terminal to improve the user experience. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of an eraser function implementation method according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a touch screen acquiring a writing state and a position; FIG. 3 is a perspective view of a stylus and a touch screen in a handwritten state; FIG. 5 is a structural block diagram of a mobile terminal according to a preferred embodiment of the present invention; FIG. 6 is a block diagram of a mobile terminal for a mobile terminal according to an embodiment of the present invention; Schematic diagram of the structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. The touch-operated mobile terminal includes a resistive touch screen and a stylus. The user uses the stylus to click on the resistive touch screen, and the change in the pressure and the change in the contact area can generate different resistances and position intervals. The processor of the mobile terminal has different resistances. And the position interval analyzes the user's operational intent and executes various instructions accordingly. 1 is a diagram showing an implementation of an eraser function based on a resistive touch screen according to an embodiment of the invention. As shown in FIG. 1 , the eraser function implementation method includes the following processing: Step 4: S: Responding to a user's touch operation on the resistive touch display of the mobile terminal, calculating a resistance value of the touch point; Step S104: determining the resistance Whether the value satisfies the erasing condition; Step S106: measuring the position interval of the touch point when the resistance value satisfies the erasing condition; and step S108: performing an erasing operation on the character in the position interval. In the related art, the user deletes the wrong character one by one by using the button on the resistive touch screen, which is inconvenient to operate and has a low experience. With the technical solution provided in the above embodiments, the eraser function can be implemented on the mobile terminal, so that the user can conveniently erase the object. The deleted characters effectively improve the user experience. In the above step S102, the resistance value of the touch point is calculated, and the calculation method in the related art can be used, which will be described below in conjunction with FIG. 2. 2 is a circuit schematic diagram of a resistive touch screen. As shown in FIG. 2, the resistive touch screen comprises two transparent layers stacked one on top of the other, generally composed of two transparent resistive materials having the same surface resistance. An elastic material is usually also used to separate the two layers. When the pressure on the surface of the touch screen (such as pressing through a pen tip or finger) is large enough, contact is made between the top layer and the bottom layer. For the resistive touch screen that receives the touch operation command, the resistance value Rtouch corresponding to the touch pressure can be calculated. The specific calculation method is as follows:

(1) X-ground, at X+ plus drive voltage Vdriver, at Y+ measured voltage value Vx-, Calculate Rx-= ( Vx- * Rplate ) /Vdriver, where Rplate is a fixed value and is the sum of Rx- and Rx+.

(2) The X-ground is grounded, the voltage is driven at the Y+ port Vdriver, and the voltage value measured at X+ is Vzl;

(3) X-ground, Y+ force drive voltage Vdriver, measured voltage value Vz2 at Y-; (4) Calculate resistance Rtouch value: Rtouch = (Vz2-Vzl)/I= ( Vz2-Vz 1 ) *Rx -/Vz 1 , ie Rtouch = (Vx-*Rplate/Vdriver) *(Vz2/Vzl-l). Preferably, step S S 104 may further include the following processing:

(1) comparing the resistance value with the set threshold;

(2) It is determined based on the comparison result that an erase operation needs to be performed. The foregoing threshold may include: a first threshold (eg, R1); and the foregoing step (2) may include: determining that an erase operation needs to be performed when the first threshold < resistance value. Preferably, the threshold may further include: a second threshold (for example, R2), wherein the second threshold is greater than the first threshold, the step (2) may further include: when R1 <resistance value < R2, determining that the wipe needs to be performed In addition to the operation. Through the above processing, it can be determined whether the mobile terminal is in an erase state, that is, whether the user needs to perform an erase operation, which provides a judgment basis for subsequent execution of the erase operation, and facilitates the implementation of the eraser function. Preferably, when the resistance value is greater than R2, it may be determined that the resistive touch screen does not acquire the touch operation instruction; when the resistance value is less than R1, it is determined that the mobile terminal is in the writing state. The processor of the mobile terminal can analyze the user's operation intention according to different resistances and position intervals, and execute various instructions accordingly, thereby improving the user experience. In a preferred implementation process, when the user needs to erase the character to be deleted, the tail of the stylus can be used to touch the resistive touch screen of the mobile terminal. Preferably, the material and the contact area of the tail of the stylus may be set, wherein the rigidity and the contact area of the material are suitable for the erasing when the tail of the stylus is performed on the resistive touch screen of the mobile terminal. Conditional resistance value. Wherein, an eraser can be installed at the tail of the stylus, and the eraser can be made of a soft material with a large contact area to reduce the pressure of the rubber in contact with the touch display and reduce the pressure value of the actual touch point. In the preferred implementation process, as shown in FIG. 3, the user can perform language input such as Chinese characters and English according to his own writing habits (that is, the writing head 140 of the stylus 14 is used to write on the resistive touch screen 10), if input Don't worry about the error. The other end of the stylus (ie, the tail) is equipped with an eraser 142 (soft material). You can delete the error message by simply turning the pen upside down and pressing the wrong input message. Preferably, the above-described erasing condition may be set based on the resistance value generated when the tail of the stylus is performed on the touch operation of the resistive touch screen of the mobile terminal. Wherein, when setting the erasure condition, it is necessary to determine the endpoint value of the above interval, for example, R1, R2. For a resistive touch screen, according to its driving voltage, material characteristics, the pressure of the pressing can be debugged in advance, determine the appropriate two resistance thresholds Rl, R2, to determine whether there is contact, if there is contact, it is the tip contact, Still the contact of the tail. For example, if the resistance value Rtouch>R2 between the upper and lower layers of the touch screen is judged, there is no contact between the stylus and the touch screen; if Rl<Rtouch<R2, it is judged to be contacted with rubber; if Rtouch<Rl, the judgment is used. The tip is in contact. The above preferred implementation process is described below in connection with two preferred embodiments. Preferred embodiment 1

(1) When the user performs handwriting input in the handwriting input box of the mobile terminal (for example, a mobile phone), the eraser function is required, and the mobile phone receives the Erase message and the pressed coordinate value;

(2) When the mobile phone receives the Erase message, with the current pressed coordinate as the center and the user-set value as the side length (for example, the side length is 8 pixels), simulate a square virtual eraser, which will be located in the square. Erase of the handwriting;

(3) Drag the eraser to erase the existing strokes continuously like a pencil eraser;

(4) Change to the pen tip, you can continue handwriting input. Preferred embodiment two

(1) When the user performs handwriting input in the hand editing area (for example, the short message editing area) of the mobile terminal (for example, a mobile phone), the eraser is required, and the mobile phone receives the Erase message and the pressed coordinate value;

(2) If the pressed coordinate point is in the area where an input character image is located, the character is deleted;

(3) Drag the eraser continuously to delete consecutive phrases or sentences. FIG. 4 is a structural block diagram of a mobile terminal according to an embodiment of the present invention. The eraser function implementing device includes: a resistive touch screen 10, a processor 12, and a stylus 14. The processor 12 may further include: a calculation module 120 configured to calculate a resistance value of the touch point in response to a touch operation of the touch pen on the resistive touch screen; and a determination module 122 configured to determine whether the resistance value satisfies an erase condition; The processing module 124 is configured to: when the output of the determination module is YES, measure a position interval of the touch point, and perform an erase operation on the characters in the position interval. The processor 12 can implement the eraser function on the mobile terminal, so that the user can conveniently erase the characters to be deleted, thereby effectively improving the user's body risk. Preferably, as shown in FIG. 5, the determining module 122 may further include: a comparing module 1220 configured to compare the resistance value with the set threshold; and a determining module 1222 configured to determine that an erasing operation needs to be performed according to the comparison result. The foregoing threshold value includes: a first threshold; the determining module 124 is further configured to be at the first threshold

When <resistance value, it is determined that an erase operation needs to be performed. Preferably, the threshold may further include: a second threshold, wherein the second threshold is greater than the first threshold; and the determining module 124 is further configured to determine that an erasing operation needs to be performed when the first threshold <the resistance value < the second threshold. Preferably, as shown in FIG. 5, the determining module 124 is further configured to: when the resistance value is greater than the second threshold, determine that the resistive touch screen does not acquire a touch operation instruction, and determine that the mobile terminal is in writing when the resistance value is less than the first threshold. In the state. In the preferred implementation process, the handwriting of the mobile phone is divided into two states, writing and erasing, which are distinguished by the measured pressure. When the pen 140 is pressed, the pressure of the touch point is large, and the mobile phone software enters the writing state; when the erased content is erased by using the eraser 142, the pressure of the touch point is small, and the mobile phone software enters the erased state. In the erasing state, the X, Y coordinate value of the touch point measured by the mobile phone is measured, and the mobile phone software performs the operation of erasing the corresponding character according to the position interval of the coordinate value. FIG. 6 is a schematic structural diagram of a stylus for a mobile terminal according to an embodiment of the present invention. The material rigidity and the contact area of the tail portion 142 of the stylus are adapted to provide a resistance value that satisfies the erasing condition when the tail of the stylus is subjected to a touch operation on the resistive touch screen of the mobile terminal. In a preferred implementation, the components of the tail 142 of the stylus can be made of a soft material with a large contact area to reduce the pressure of the rubber in contact with the touch, and reduce the pressure value of the actual touch point. In summary, according to the above embodiments of the present invention, the eraser function implementation scheme, the mobile terminal, and the stylus for the mobile terminal are provided, and the user can perform language input such as Chinese characters and English according to his own writing habits. Don't worry if you make a mistake. The other end of the stylus is the eraser. You can delete the error message by simply pressing the 4 bar counter and pressing the wrong input message. Therefore, the user's handwriting input can be made more convenient and user-friendly, and the user experience is effectively improved. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claims An implementation of an eraser function, including:

Calculating the resistance value of the touch point in response to the user's touch operation on the resistive touch display of the mobile terminal;

Determining whether the resistance value satisfies an erasure condition;

When the resistance value satisfies an erasing condition, measuring a position interval of the touch point; and

An erase operation is performed on the characters in the position interval. The method according to claim 1, wherein determining whether the resistance value satisfies the erasing condition comprises:

Comparing the resistance value with a set threshold;

It is determined based on the comparison result that an erase operation needs to be performed. The method according to claim 2, wherein

The threshold includes: a first threshold;

Determining that the erasing operation needs to be performed based on the comparison result includes: determining that an erase operation needs to be performed when the first threshold < the resistance value. The method according to claim 3, wherein

The threshold further includes: a second threshold, where the second threshold is greater than the first threshold;

Determining that the erasing operation needs to be performed based on the comparison result includes: determining that an erase operation needs to be performed when the first threshold < the resistance value < the second threshold. The method according to claim 4, further comprising:

Determining that the resistive touch screen does not acquire a touch operation instruction when the resistance value is greater than the second threshold;

When the resistance value is less than the first threshold, it is determined that the mobile terminal is in a writing state.

6. The method according to claim 1, further comprising:

Setting a material and a contact area of the tail of the stylus, wherein the rigidity of the material and the contact area are suitable when the tail of the stylus is subjected to a touch operation on the resistive touch screen of the mobile terminal, A resistance value that satisfies the erase condition is provided.

7. The method according to claim 1, further comprising: setting the erasing according to a resistance value generated when a tail of the stylus is performed on a touch operation of the resistive touch screen of the mobile terminal condition.

8. A mobile terminal, comprising: a resistive touch screen, a processor, and a stylus, the processor comprising:

a calculation module, configured to calculate a resistance value of the touch point in response to the touch operation of the touch pen on the resistive touch screen;

a determining module, configured to determine whether the resistance value satisfies an erasing condition; and the processing module is configured to: when the output of the determining module is YES, measure a position interval of acquiring the touch point, and The character performs the erase operation.

The mobile terminal according to claim 8, wherein the determining module comprises: a comparing module, configured to compare the resistance value with a set threshold; and determining a module, configured to determine whether a need is needed according to the comparison result Perform an erase operation.

The mobile terminal according to claim 9, wherein the threshold value comprises: a first threshold; the determining module is configured to determine that an erasing operation needs to be performed when the first threshold < the resistance value.

The mobile terminal according to claim 8, wherein the threshold further comprises: a second threshold, wherein the second threshold is greater than the first threshold;

The determining module is configured to determine that an erase operation needs to be performed when the first threshold < the resistance value < the second threshold.

The mobile terminal according to claim 11, wherein

The determining module is configured to: when the resistance value is greater than the second threshold, determine that the resistive touch screen does not acquire a touch operation instruction, and determine the movement when the resistance value is less than the first threshold The terminal is in the writing state.

3. A stylus for a mobile terminal, wherein a material rigidity and a contact area of a tail portion of the stylus are adapted to be performed on a resistive touch screen of the mobile terminal by a tail portion of the stylus At the time, a resistance value that satisfies the erasing condition is provided.