CN101907943A - Method and system for correcting software keyboard input and computer program product using the method - Google Patents

Abstract

The present invention relates to a method and system for correcting software keyboard input, and a computer program product using the method. The method for correcting software keyboard input comprises: obtaining the coordinates of the first touch landing point input by the user; obtaining a correction horizontal model and a correction vertical model from a self-correction database; applying the correction horizontal model and the correction vertical model to the first landing point horizontal coordinate and the first landing point vertical coordinate respectively to calculate the correction landing point coordinates; and comparing the correction landing point coordinates with the center point coordinates to determine the key value that the user wants to input.

Description

Method and system for correcting software keyboard input and computer program product using the method

technical field

The present invention relates to a method and system for software keyboard input and a computer program product using the method, and in particular relates to a method and system for correcting software keyboard input and a computer program product using the method.

Background technique

On a handheld device, a touch-sensitive software keyboard is often used as a man-machine interface for inputting data, and the touch-sensitive software keyboard draws keys on the screen in a software manner. The user presses these drawn buttons by touch, and by detecting the position of the touch point of the user, and comparing the position of the touch point with the position of the key drawn on the screen, the user can be judged What is the key to be pressed at that time.

However, because users have different button habits, personal parallax, different fingers used when pressing buttons, different ways or directions of holding the device, etc., the landing point when touching is different from the button position drawn on the screen. This will make the software keyboard unable to correctly determine the key that the user really wants to press, resulting in input errors.

Therefore, a new method is designed to modify the software keyboard input to improve the above shortcomings.

Contents of the invention

Therefore, the object of the present invention is to provide a method and system for correcting software keyboard input, and a computer program product using the method, as a software keyboard for correcting touch point coordinates when inputting data, so as to improve the accuracy of button judgment.

The method for correcting software keyboard input according to one aspect of the present invention includes: obtaining the first touch point coordinates input by the user, the first touch point coordinates including the first touch point horizontal coordinates and the first touch point vertical coordinates; The correction database obtains the correction horizontal model and the correction vertical model; applies the correction horizontal model and the correction vertical model to the first landing point horizontal coordinate and the first landing point vertical coordinate respectively to calculate the correction landing point coordinates; compares the correction landing point coordinates and the center point coordinates To determine the key value that the user wants to input.

According to another aspect of the present invention, the system for correcting software keyboard input includes: a first coordinate obtaining module, configured to obtain the coordinates of the first touch point input by the user, wherein the first touch point coordinates include the first touch point level coordinates and the vertical coordinates of the first landing point; the model acquisition module is used to obtain the calibration horizontal model and the calibration vertical model from the calibration database; the calculation module is used to apply the calibration level to the horizontal coordinates of the first landing point and the vertical coordinates of the first landing point respectively The model and the calibration vertical model are used to calculate the coordinates of the corrected landing point; and the comparison module is used to compare the coordinates of the corrected landing point and the coordinates of the center point to determine the key value to be input by the user.

The computer program product according to yet another aspect of the present invention includes program instructions for executing: obtaining the coordinates of the first touch point input by the user, and the first touch point coordinates include the horizontal coordinates of the first touch point and the first touch point Vertical coordinates; get the corrected horizontal model and corrected vertical model from the calibration database; apply the corrected horizontal model and corrected vertical model to the first landing point horizontal coordinates and the first vertical coordinates respectively to calculate the corrected landing point coordinates; compare the corrected landing point coordinates Coordinate with the center point to determine the key value that the user wants to input.

Description of drawings

In order to make the above-mentioned and other purposes, features and advantages of the present invention more obvious and understandable, preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a flow chart of a method for regionally correcting software keyboard input using a correction model according to an embodiment of the present invention.

Fig. 2 is a flow chart of a method for regionally correcting software keyboard input by using a correction model according to another embodiment of the present invention.

FIG. 3A is a schematic diagram of a system for correcting software keyboard input.

FIG. 3B is a schematic diagram of a correction database construction system.

Detailed ways

Next, please refer to the detailed description of the embodiments of the present invention, in which the mentioned examples will be described together with the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and description to refer to the same or like elements.

Referring to FIG. 1 , it is a flowchart of a method for correcting software keyboard input according to an embodiment of the present invention. The computer program product in another embodiment of the present invention can execute the steps of the method with program instructions. The method for correcting software keyboard input includes the following steps (it should be understood that the steps mentioned in this embodiment, except those whose order is specifically stated, can be adjusted according to actual needs, and may even be simultaneously or partially run concurrently):

(1) Obtain the coordinates of the first touch point input by the user, wherein the first touch point coordinates include the first touch point horizontal coordinate and the first touch point vertical coordinate (step 112 ).

(2) Obtain the corrected horizontal model and the corrected vertical model from the corrected database (step 114).

(3) The horizontal coordinates of the first landing point and the vertical coordinates of the first landing point are respectively applied to the calibration horizontal model and the calibration vertical model to calculate the calibration coordinates of the landing point (step 116 ).

(4) Compare the coordinates of the corrected landing point with the coordinates of the center point to determine the key value that the user wants to input (step 118 ).

In one implementation, when the user touches a button on the screen, if the coordinates of the button the user presses are (xt, yt), the coordinates of xt and yt (in the linear regression model independent variable) to apply the horizontal and vertical one-element linear regression models respectively to obtain the corrected landing point coordinates (the dependent variable in the linear regression model), and then compare the corrected coordinates with the button positions drawn on the screen, and then Determine which button the user wants to press at that time.

In addition, when using a software keyboard for input, due to different usage scenarios, the keys in some areas of the software keyboard (the area where the software keys are distributed) may need to be different from the keys in other areas, and then different keys must be applied. Univariate linear regression model. For example, for a user who holds a mobile phone with both hands at the same time, he may use the left and right thumbs to operate the software keyboard to input text. Generally speaking, when using the right thumb to touch the input, the landing point usually tends to fall on the lower right corner of the button, while when using the left thumb to touch the input, the landing point tends to fall on the lower left corner of the button, because the thumbs of the left and right hands are in the The touch points are different, so if the same linear regression correction coordinates are applied to all the keys on the keyboard, a large error may occur.

In addition, the method may also include the step of providing a correction database construction stage, to provide the correction database required for correcting software keyboard input, the correction database construction stage includes the following steps (it should be understood that in this embodiment, and steps, unless the sequence is specifically stated, the sequence can be adjusted according to actual needs, and may even be executed at the same time or partially at the same time):

(1) Obtain the coordinates of the second touch point input by the user, wherein the second touch point coordinates include the second touch point horizontal coordinates and the second touch point vertical coordinates (step 104 ). For each input, for example, when the obtained coordinates of the second touch point are (101, 42), it means that the horizontal coordinate of the second touch point is 101, and the vertical coordinate of the second touch point is 42. One possible implementation is to require the user to press the corresponding key on the software input keyboard according to the key indicated on the screen. During this process, the program will record the coordinates of the touch points touched by the user one by one. Assume that the user is required to press n times of buttons, and the coordinates of the n touch points are (x1, y1), (x2, y2), (x3, y3), ... (xn-1, yn-1), (xn, yn), from which two following X and Y sequences can be obtained respectively:

Horizontal coordinate X = {x1, x2, x3, ..., xn-1, xn}

Vertical coordinate Y = {y1, y2, y3, ..., yn-1, yn}

(2) Using the horizontal coordinates of the second landing point and the horizontal coordinates of the central point to establish a corrected horizontal model (step 106). The horizontal coordinates of the second landing point will be calculated with the horizontal coordinates of the center point of the button that should be pressed at that time to obtain the relative position of the horizontal coordinates of the second landing point and the horizontal coordinates of the center point, and then establish a calibration level model .

(3) Establish a corrected vertical model by using the vertical coordinates of the second landing point and the vertical coordinates of the center point (step 108). The vertical coordinates of the second landing point will be used to calculate the vertical coordinates of the center point of the button that should be pressed at that time to obtain the relative position of the vertical coordinates of the second landing point and the vertical coordinates of the center point, and then establish a corrected vertical model . One possible implementation of correcting the horizontal model and correcting the vertical model is the Unary Linear Regression Model. The Unary Linear Regression analysis and forecasting method is based on the correlation between the independent variable X and the dependent variable Y to establish the relationship between X and Y. A linear regression equation to make predictions. For example, the parameters a and b of the unary linear regression equation Yt=a+bxt can be obtained by using the horizontal coordinates of the second landing point and the horizontal coordinates of the center point, and then the parameters a and b are substituted to establish a correction level model. According to this method, the correction vertical model is established, so here, the two groups of linear regression models are respectively established according to different coordinate directions. The implementation aspect of the present invention is not limited to the linear regression model, and various suitable methods can be used to establish the calibration model.

(4) Store the corrected horizontal model and the corrected vertical model in the corrected database (step 110). At this time, independent linear regression models have been established for two different directions, horizontal and vertical, and stored in the database for use.

Referring to FIG. 2 , it is a flowchart of a method for correcting software keyboard input according to another embodiment of the present invention. In the aforementioned usage scenarios, in the calibration database construction stage, the software keyboard can be cut into several areas first, and then the steps in the calibration database construction phase can be repeated to establish a calibration level model and calibration for each area. vertical model. In this embodiment, the software keyboard is first divided into left and right areas (step 204), and after obtaining the touch point coordinates input by the user (step 206), the area where the touch point coordinates are located is determined (step 208 ), independently calculate the linear regression model of each region (step 210), and store the linear regression model of each region in the calibration database (step 202).

Then, when applying this method of correcting software keyboard input, after obtaining the coordinates of the user's touch point (step 212), determine the area where the coordinates of the touch point are located (step 214), and then obtain the corresponding touch point from the calibration database. The linear regression model of the area where the falling point coordinates are located (step 216 ), and then apply the corresponding linear regression model to correct it (step 218 ).

The area division of this keyboard configuration can be designed according to the actual situation. It may be divided into two areas on the left and right, or divided into four blocks of Tian Zi, or designed as Jiugongge blocks of Tic Tac Toe. In fact, the division of areas can be based on the used Further design is required.

Another embodiment of the present invention will describe a system for correcting software keyboard input. Referring to FIG. 3A and FIG. 3B, FIG. 3A is a schematic diagram of a system 350 for correcting software keyboard input, and FIG. . The system 350 for correcting software keyboard input includes a software keyboard 312 , a calibration database 320 , a first coordinate acquisition module 314 , a model acquisition module 362 , an operation module 364 , and a comparison module 366 . After the user inputs data through the touch input interface provided by the software keyboard 312, the first coordinate acquisition module 314 acquires the coordinates of the first touch point input by the user, wherein the first touch point coordinates include the first touch point The horizontal coordinate and the vertical coordinate of the first drop point.

The correction database 320 stores the correction horizontal model and the correction vertical model built by the correction database construction system 310 . The model obtaining module 362 is used for obtaining a corrected horizontal model and a corrected vertical model corresponding to the area where the first touch point coordinates are located from the calibration database 320 . The calculation module 364 is used for applying the corrected horizontal model and the corrected vertical model to the first landing horizontal coordinate and the first vertical coordinate respectively to calculate the corrected landing coordinates (including the corrected horizontal coordinate and the corrected vertical coordinate). The comparing module 366 is used for comparing the coordinates of the corrected landing point and the coordinates of the center point to determine the key value to be input by the user.

In addition, the system 350 for correcting software keyboard input may further include a determination module 342 . When the software keyboard is divided into several areas, the determining module 342 can be used to determine the area where the coordinates of the first touch point are located after the first coordinate obtaining module 314 obtains the coordinates of the first touch point. At this time, the model obtaining module 362 obtains from the calibration database 320 a calibration horizontal model and a calibration vertical model corresponding to the area where the coordinates of the first touch point are located. Then, the calculation module 364 applies the corrected horizontal model and the corrected vertical model to the horizontal coordinates of the first touched point and the vertical coordinates of the first touched point respectively according to the area where the coordinates of the first touched point are located to calculate the corrected touched coordinates. Finally, the comparing module 366 compares the coordinates of the corrected landing point and the coordinates of the center point to determine the key value that the user wants to input.

Referring to FIG. 3B , it is a schematic diagram of a calibration database construction system. The correction database building system 310 includes: a software keyboard 312 , a second coordinate acquisition module 324 , a correction horizontal model building module 316 , a correction vertical model building module 318 , and a correction database 320 . The software keyboard 312 is used to provide the user with a touch input interface. The second coordinate obtaining module 324 is used for obtaining the second touch point coordinates input by the user, wherein the second touch point coordinates include the second touch point horizontal coordinates and the second touch point vertical coordinates. The correction level model building module 316 is used for building a correction level model by using the second landing point horizontal coordinate and the center point horizontal coordinate obtained by the second coordinate obtaining module 324 . The corrected vertical model building module 318 is used for establishing the corrected vertical model by using the vertical coordinates of the second landing point and the vertical coordinates of the center point obtained by the second coordinate obtaining module 324 . Calibrating the horizontal model as well as calibrating the vertical model can be done using a linear regression model, especially a univariate linear regression model. The calibration database 320 is used to store the calibration horizontal model and the calibration vertical model.

In addition, the correction database construction system 310 may further include a cutting module 332 and a determining module 342 . Due to different use scenarios, different calibration models may be applied to different software keyboard regions in some cases, and the cutting module 330 may cut the software keyboard into several regions according to actual needs. After cutting into several areas, the determination module 342 can use it to determine the area where the coordinates of the second touch point are located after the second coordinate obtaining module 324 obtains the coordinates of the second touch point, and then establish a calibration level model for each area As well as correcting the vertical model.

In summary, the method and system for correcting software keyboard input disclosed in the foregoing embodiments, and the computer program product using this method, learn the user's knowledge in advance through the software in the correction database construction phase (providing a training mode). Operational features, establish correction data for coordinate correction, and store it in the correction database, users can use the appropriate correction model when pressing keys in the future, especially mathematical statistics and linear regression techniques, as a software keyboard when inputting data The coordinates of the touch point are corrected to improve the accuracy of button judgment.

Although the present invention has been disclosed above with embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various equivalent changes or substitutions without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall prevail as defined by the appended claims of the application.

Claims (16)

1. A method for correcting software keyboard input, comprising the following steps: Obtaining a first touch point coordinate input by a user, wherein the first touch point coordinate includes a first touch point horizontal coordinate and a first touch point vertical coordinate; obtaining a calibration horizontal model and a calibration vertical model from a calibration database; Applying the horizontal coordinate of the first drop point and the vertical coordinate of the first drop point to the corrected horizontal model and the corrected vertical model respectively to calculate a corrected drop point coordinate; and The coordinates of the corrected landing point are compared with the coordinates of a center point to determine the key value that the user wants to input. 2. The method according to claim 1, further comprising the step of providing a calibration database construction phase, the calibration database construction phase comprising the following steps: Obtaining at least one second touch point coordinates input by the user, wherein the second touch point coordinates include a second touch point horizontal coordinate and a second touch point vertical coordinate; Establishing the calibration horizontal model by using the horizontal coordinates of the second landing point and the horizontal coordinates of the central point; establishing the corrected vertical model using the vertical coordinates of the second landing point and the vertical coordinates of the center point; and The calibration horizontal model and the calibration vertical model are stored in the calibration database. 3. The method of claim 2, wherein the corrected horizontal model and the corrected vertical model are linear regression models. 4. The method according to claim 3, wherein the corrected horizontal model and the corrected vertical model are unary linear regression models. 5. The method according to claim 2, further comprising the following steps before the step of obtaining at least one second touch point coordinates input by the user: A software keyboard is divided into at least one area. 6. The method according to claim 5, further comprising, when the software keyboard is divided into a plurality of regions, repeatedly executing the correction database building stage, so as to establish a correction level model for each of the regions and A corrected vertical model. 7. The method according to claim 5, further comprising a step of determining that the first touch point coordinates are located in one of the at least one area, and obtaining a calibration level model and a calibration from a calibration database The step of the vertical model includes the step of obtaining the corrected horizontal model and the corrected vertical model corresponding to the region where the first touch point coordinates are located from the corrected database. 8. The method according to claim 7, wherein the step of applying the horizontal coordinate of the first drop point and the vertical coordinate of the first drop point to the corrected horizontal model and the corrected vertical model respectively comprises the following steps: The horizontal coordinates of the first touch point and the vertical coordinates of the first touch point are respectively applied to the corrected horizontal model and the corrected vertical model corresponding to the area where the coordinates of the first touch point are located, so as to calculate the coordinates of the corrected touch point . 9. A system for correcting software keyboard input, comprising: A first coordinate obtaining module, configured to obtain a first touch point coordinate input by a user, wherein the touch point coordinate includes a first touch point horizontal coordinate and a first touch point vertical coordinate; A model acquisition module, used to acquire a calibration horizontal model and a calibration vertical model from a calibration database; an operation module, used for applying the horizontal coordinate of the drop point and the vertical coordinate of the drop point to the corrected horizontal model and the corrected vertical model respectively to calculate a corrected drop point coordinate; and A comparison module is used to compare the coordinates of the corrected landing point with a center point coordinate to determine the key value that the user wants to input. 10. The system according to claim 9, further comprising a correction database construction system, the correction database construction system comprising: A software keyboard for providing a touch input interface; A second coordinate obtaining module, configured to obtain at least one second touch point coordinates input by the user, wherein the touch point coordinates include a second horizontal coordinate of the touch point and a second vertical coordinate of the touch point; A correction level model building module, used for building the correction level model by using the horizontal coordinate of the second landing point and a center point horizontal coordinate; A correction vertical model building module, used to use the vertical coordinates of the second landing point and a center point vertical coordinates to build the correction vertical model; and A calibration database is used to store the calibration horizontal model and the calibration vertical model. 11. The system of claim 10, wherein the corrected horizontal model and the corrected vertical model are linear regression models. 12. The system according to claim 11, wherein the corrected horizontal model and the corrected vertical model are unary linear regression models. 13. The system according to claim 11, wherein the correction database construction system further comprises a cutting module for cutting the software keyboard into at least one area. 14. The system according to claim 13, wherein when the software keyboard is divided into a plurality of regions, the correction database construction system establishes a correction horizontal model and a correction vertical model for each of the regions. 15. The system according to claim 13, further comprising a judging module for judging that the coordinates of the first touch point are located in one of the at least one area, and the model obtaining module is used for correcting The database obtains the corrected horizontal model and the corrected vertical model corresponding to the area where the first touch point coordinates are located. 16. The system according to claim 15, wherein the calculation module is used to respectively apply the horizontal coordinates of the first touch point and the vertical coordinates of the first touch point to the coordinates of the first touch point where the coordinates of the first touch point are located. The corrected horizontal model and the corrected vertical model of the area to calculate the corrected drop point coordinates.

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