WO2011124069A1

WO2011124069A1 - Touch screen triggering method, touch apparatus and handheld device

Info

Publication number: WO2011124069A1
Application number: PCT/CN2010/078858
Authority: WO
Inventors: 李辉
Original assignee: 华为终端有限公司
Priority date: 2010-04-06
Filing date: 2010-11-18
Publication date: 2011-10-13
Also published as: CN101794197B; CN101794197A

Abstract

A touch screen triggering method, a touch apparatus and a handheld device are provided, which relate to the information input technology field. The touch screen triggering method includes: comparing a random graphic parameter generated by a touch input with a pre-stored standard graphic parameter(S101); when the compared result of the random graphic parameter and the standard graphic parameter is within a predetermined range, accepting the touch input and executing the corresponding operation according to the touch input(S102); when the compared result of the random graphic parameter and the standard graphic parameter exceeds the predetermined range, locking the touch screen(S103). Malfunction in triggering the touch screen can be prevented.

Description

Touch screen triggering method, touch device and handheld device The application is submitted to the Chinese Patent Office on April 6, 2010, and the application number is

201010139577.2, the entire disclosure of which is incorporated herein by reference in its entirety in its entirety in the the the the the the the the the the the

Technical field

The present invention relates to the field of information input technologies, and in particular, to a touch screen triggering method, a touch device, and a handheld device. Background technique

With the convenience and miniaturization of handheld devices, users have placed higher demands on the input configuration of handheld devices. Among them, the touch screen has been widely used as an input device that is small in size, convenient to use, and capable of accepting multi-point input (such as simultaneously pressing the shift key and the letter key to achieve case switching).

In a handheld device with a touch screen, the touch input is typically generated by the pressing of a finger or a stylus. Compared to using the key input, the input screen requires less power, especially for capacitive touch screens (where touch screens include resistive touch screens and capacitive touch screens, etc.), fingers or touch pens (touch pens) Need to be a conductor) or even a capacitive touch screen, just touch the capacitive touch screen to generate a touch input. This makes the use of the touch screen easier and more convenient.

However, in the process of using the above touch screen, the inventors found that at least the following problems exist in the prior art:

In the process of input using the touch screen, when a large area of the palm or face contacts the resistive touch screen or is close to the capacitive touch screen, the touch screen is easily triggered, thereby causing the handheld device to generate an erroneous operation without the user's knowledge. For example, when answering a call, if the mobile communication terminal is too close to the face, it is possible to cause the face to trigger the hang up button on the touch screen, so that the user does not know In the case of the call hang up, the result is the normal call of the user.

Summary of the invention

An object of the embodiments of the present invention is to provide a touch screen triggering method, a touch device, and a handheld device to better prevent false triggering of the touch screen.

In order to achieve the above object, the following technical solutions are used in the embodiments of the present invention:

A touch screen triggering method includes:

Comparing the random graphic parameter generated by the touch input with a pre-stored standard graphic parameter; when the comparison result of the random graphic parameter and the standard graphic parameter is within a preset range, accepting the touch input, and according to the Touch the input to perform the corresponding operation;

The touch screen is locked when the comparison result of the random graphic parameter and the standard graphic parameter exceeds a preset range.

A touch device includes:

a comparison unit, configured to compare a random graphic parameter generated by the touch input with a pre-stored standard graphic parameter;

An operation unit, configured to accept the touch input when the comparison result of the random graphic parameter and the standard graphic parameter is within a preset range, and perform a corresponding operation according to the touch input; When the comparison result of the random graphic parameter and the standard graphic parameter exceeds the preset range, the touch screen is locked.

A handheld device includes the touch device.

The touch screen triggering method, the touch device and the handheld device provided by the embodiments of the present invention can compare the random graphic parameters generated by the touch input with the pre-stored standard graphic parameters, and the random graphic parameters and the standard graphic parameters. When the comparison result exceeds the preset range, the touch screen is locked, and the touch input is rejected, so that the false trigger of the touch screen is well prevented.

DRAWINGS

1 is a schematic diagram of a method for triggering a touch screen according to an embodiment of the present invention;

2 is a schematic flow chart of a method for triggering a touch screen according to an embodiment of the present invention; 3( a ) to 3 ( d ) are schematic diagrams of processes for determining the random pattern parameters; FIG. 4 ( a ) to FIG. 4 ( b ) are a group of determining that the random pattern does not coincide with the standard pattern. Process schematic

5 is a schematic diagram of another group determining the degree of non-coincidence between the random pattern and the standard pattern; FIG. 6 is a schematic diagram of a touch device according to an embodiment of the present invention;

FIG. 7 is a detailed structural diagram of the touch device shown in FIG. 6.

detailed description

The touch screen triggering method, the touch device and the handheld device of the embodiment of the present invention are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1 , the touch screen triggering method provided by the embodiment of the present invention can better prevent the touch screen from being triggered by mistake. The method includes:

S101, comparing random graphic parameters generated by the touch input with pre-stored standard graphic parameters;

5102: When the comparison result of the random graphic parameter and the standard graphic parameter is within a preset range, accept the touch input, and perform a corresponding operation according to the touch input;

5103. Lock the touch screen when a comparison result of the random graphic parameter and the standard graphic parameter exceeds a preset range.

The touch screen triggering method provided by the embodiment of the present invention can compare the random graphic parameter generated by the touch input with the pre-stored standard graphic parameter, and the comparison result of the random graphic parameter and the standard graphic parameter exceeds a preset range. When the touch screen is locked, the touch input is rejected, so that the false trigger of the touch screen is well prevented.

Wherein, the parameter includes a shape and an area size of the graphic. That is, it is necessary to store the outline (representing the shape) of the standard figure and the area value when the standard pattern parameters are stored in advance. After the user performs a touch input to generate a random pattern, the random pattern is processed to obtain a contour of the random pattern And area values (this will be explained in detail later). Then, comparing the random pattern with the standard graphic in terms of shape and area size, and comparing the shape and the area size of the random graphic with the shape and the area size of the standard graphic are all preset In the range, accepting the touch input; when one of the comparison results of the shape and the area size of the random graphic and the shape and the area size of the standard graphic exceeds a preset range, the touch screen is locked, and the rejection is accepted The touch input.

It should be noted that, in terms of shape, the degree of coincidence (or non-coincidence) of the random pattern and the standard pattern may be compared. For example, for the degree of non-coincidence, the preset range may be set to 20%, that is, When the non-coincidence degree of the random pattern and the standard pattern is greater than 20%, the comparison result is considered to be out of the preset range, and the touch screen is locked, and the touch input is rejected. In terms of the size of the area, the area of the random pattern can be compared with the area of the standard figure. When the ratio is not between 80% and 120%, the comparison result can be considered to be out of the preset range, and the screen is also locked. , refuse to accept the touch input. It should be noted that the values of the preset ranges described herein are merely examples. In other embodiments of the present invention, other different preset range values may also be set.

The touch screen triggering method described in this embodiment will be described in detail below. As shown in FIG. 2, the triggering method includes:

S201. Obtain a boundary point of the random graphic.

After the user's touch input produces a random graph, the boundary points of the random graph are obtained for later use. There are a variety of methods for obtaining graphic boundary points in the prior art, and this embodiment can be used for reference. For example, Figure 3 (a) is a random pattern generated after the user touches the touch screen. The random pattern can be discretized first, and the random pattern is decomposed into discrete points. The discretized random pattern is shown in Figure 3 (b). Show. Then, as shown in Figure 3 (c), find the outermost discrete points in the random graph, as shown in Figure 3 (c), point 1, point 2, and point 3, etc. These outermost discrete points are the boundaries of the random graph. point.

S202: Connect all or part of the boundary points by a straight line or a curve to generate an outline of the random pattern.

As shown in Figure 3 (d), all the boundary points found in Figure 3 (c) can be connected by a straight line. The outline of the random pattern is formed, and the outline of the random pattern in FIG. 3(d) is a polygon. In other embodiments of the invention, all of the boundary points may also be connected using a smooth curve. Or in other embodiments of the invention, only the boundary points of the portions may be connected (without having to connect all of the boundary points).

S203. Determine a shape and an area size of the random pattern according to a contour generated when the boundary point is connected.

Specifically, the polygon formed by connecting all the boundary points by straight lines in step S202 is the outline of the random pattern, and the area size of the polygon is the area size of the random pattern. Among them, there are many methods for calculating the size of a graphic area in the prior art, which will not be described in detail herein.

5204. Establish a reference coordinate system, and use a position of the centroid of the standard graphic in the reference coordinate system as a reference point.

In the present embodiment, as shown in Fig. 4 (a), the reference coordinate system is a Cartesian coordinate system (not limited thereto, and a polar coordinate system may be established), the abscissa is X, and the ordinate is y. Moreover, the standard pattern described in this embodiment is a circle, and the position of the center of the standard figure (i.e., centroid) in the Cartesian coordinate system is used as a reference point.

S205: Perform a translation coordinate transformation on the random graphic in the reference coordinate system, so that a centroid of the random graphic coincides with the reference point.

The centroid of the random pattern can be determined using methods commonly used in the prior art. The case where the centroid of the random pattern coincides with the centroid of the standard pattern is as shown in Fig. 4(b).

5206. Calculate a non-coincidence degree between the random pattern and the standard graphic after the centroid coincidence. When the non-coincidence is within the preset range, step S207 is performed; when the non-coincidence is greater than the preset range, step S209 is performed. Specifically, the method for determining the non-coincidence in step S206 includes:

S2061: Determine a first area of the random pattern that is outside the outline of the standard figure after the centroid coincidence, and a second area where the standard figure is outside the outline of the random figure.

In FIG. 4(b), the random pattern (polygon) is located in the standard figure (circular) The first area outside the contour is represented by a grid line, and the second area of the standard pattern outside the outline of the random pattern is indicated by hatching. The area size of the first area of the grid line and the area of the second area of the hatched line are calculated separately.

S2062. The larger one of the ratio of the first area to the standard pattern area and the ratio of the second area to the standard pattern area is used as the shape of the random pattern and the standard pattern.

Calculating a ratio of the first area to the standard graphic area, and calculating a ratio of the second area to the standard graphic area, wherein the larger one is not coincident with the shape of the standard graphic as the random graphic degree. This avoids erroneous determination of the mismatch when the following extremes occur. As shown in FIG. 5, the random figure (polygon, which is generated when the touch screen is triggered by the palm or the face) has a larger area and completely covers the standard figure, so that the first area is larger and exceeds the preset range. The second area is zero. Actually, the coincidence degree of the random pattern and the standard pattern at this time is not within the preset range, but if the smaller of the two is taken, the mismatch is determined.

S207. Compare an area size of the random graphic with an area size of the standard graphic. When the ratio is within a preset range, perform step S208. When the ratio exceeds the preset range, execute step S209.

The preset range may be 80% to 120%, that is, the random pattern may be smaller than the standard graphic or larger than the standard graphic. Moreover, embodiments of the present invention are not limited to directly comparing the area size of the random pattern with the area size of the standard pattern. In other embodiments of the present invention, the difference between the area size of the random pattern and the area size of the standard pattern may also be used to compare with the area size of the standard pattern.

5208, accept the touch input, and perform a corresponding operation according to the touch input.

5209. Lock the touch screen and refuse to accept the touch input to avoid false triggering of the touch screen. Here are two questions to explain:

First, although the random pattern and the standard pattern are first compared in terms of shape in the embodiment, in other embodiments of the present invention, the size may be firstly used in terms of area size. The random pattern is compared to the standard pattern.

Second, although not illustrated in the embodiment, it should be understood that the standard pattern parameters include not only standard pattern parameters corresponding to the user's fingers but also standard pattern parameters corresponding to the touch pen. The process of comparing the random pattern parameters with the standard pattern parameters corresponding to the touch pen is the same as the embodiment shown in Fig. 2. Moreover, the touch input can be accepted as long as the random graphic parameter can match one of a standard graphic parameter corresponding to a user's finger and a standard graphic parameter corresponding to the touch pen.

Moreover, the touch screen triggering method in this embodiment can be applied not only to a resistive touch screen but also to a capacitive touch screen. For example, in the case of a touch screen on a mobile phone, when the user answers the call, the user's face may only be too close to the touch screen, and the touch screen is not pressed, but this is too close for the capacitive touch screen. It can be caused to be falsely triggered, so that the touch screen triggering method in the embodiment can be applied to the capacitive touch screen to achieve a better effect.

As shown in FIG. 6, the embodiment of the present invention further provides a touch device, where the touch device includes: a comparing unit 601, configured to compare a random graphic parameter generated by a touch input with a pre-stored standard graphic parameter;

The operation unit 602 is configured to: when the comparison result of the random graphic parameter and the standard graphic parameter is within a preset range, accept the touch input, and perform a corresponding operation according to the touch input; and the locking unit 603 is configured to: The touch screen is locked when the comparison result of the random graphic parameter and the standard graphic parameter exceeds a preset range.

The touch device provided by the embodiment of the present invention can compare the random graphic parameter generated by the touch input with the pre-stored standard graphic parameter, and when the comparison result of the random graphic parameter and the standard graphic parameter exceeds a preset range The touch screen is locked and the touch input is rejected, so that false triggering of the touch screen is preferably prevented.

Wherein, the parameter includes a shape and an area size of the graphic. That is, it is necessary to store the outline (representing the shape) of the standard figure and the area value when the standard pattern parameters are stored in advance. After the user makes a touch input to generate a random pattern, the random pattern is processed to obtain contour and area values of the random pattern. Then, the random pattern and the standard graphic are entered into two aspects of shape and area size. Comparing, and accepting the touch input when the comparison result of the shape and the area size of the random pattern and the shape and the area size of the standard graphic are within a preset range; in the shape of the random graphic and When one of the comparison results of the area size and the shape and the area size of the standard figure exceeds the preset range, the touch screen is locked, and the touch input is rejected.

Specifically, as shown in FIG. 7, in order to obtain the shape and the size of the random graphic, the touch device may further include:

a boundary point obtaining unit 604, configured to acquire a boundary point of the random graphic;

a random graphic contour generating unit 605, configured to connect all or part of the boundary points by a straight line or a curved line to generate an outline of the random graphic;

The parameter determining unit 606 is configured to determine a shape and an area size of the random pattern according to a contour generated when the boundary point is connected.

After acquiring the shape and area size of the random pattern, the random pattern and the standard pattern can be compared in terms of both shape and area size.

When comparing the random pattern and the standard pattern in terms of shape, the comparing unit 601 includes:

a reference point determining module 6011, configured to establish a reference coordinate system, and use a position of the centroid of the standard graphic in the reference coordinate system as a reference point;

a centroid coincidence module 6012, configured to perform a translation coordinate transformation on the random graphic in the reference coordinate system, so that a centroid of the random graphic coincides with the reference point;

a calculating module 6013, configured to calculate a non-coincidence degree between the random pattern and the standard graphic after the centroid coincidence;

A module for comparing the non-coincidence degree with the preset range.

When the non-coincidence degree of the random pattern and the standard pattern exceeds a preset range, the touch screen of the touch device is directly applied to avoid erroneously triggering the touch screen. When the non-coincidence degree of the random pattern and the standard pattern is within a preset range, the random pattern and the standard pattern are compared in terms of area size.

Specifically, to calculate the non-coincidence degree, the calculating module 6013 includes: a non-coincidence area determining sub-module 60131, configured to determine a first area after the centroid coincidence that the random pattern is outside a contour of the standard figure, and a second figure that is outside the outline of the random pattern area;

a non-coincidence determining sub-module 10132, configured to use a larger one of a ratio of the first area to a standard graphic area and a ratio of the second area to a standard graphic area as the random graphic and the standard graphic The shape coincides.

When the random pattern and the standard pattern are compared in terms of area size, the comparing unit 601 further includes:

The area size comparison module 6014 is configured to calculate a ratio of an area size of the random pattern to an area size of the standard pattern. When the ratio exceeds a preset range, the touch screen of the touch device is locked to prevent the touch screen from being triggered by mistake; when the ratio is within a preset range, the touch input is accepted, and according to the touch input Perform the appropriate action.

Alternatively, in other embodiments of the present invention, the area size comparison module 601 may be further configured to calculate a difference between an area size of the random pattern and an area size of the standard graphic, and an area size of the standard graphic. ratio.

In addition, the embodiment of the invention further provides a handheld device. The handheld device includes a touch device as described above. It should be noted that the structure and function of the touch device in the embodiment of the handheld device are the same as those of the touch device in the embodiment of the touch device, and details are not described herein.

For example, the handheld device in this embodiment may be a mobile communication terminal (such as a mobile phone), a media player, a digital camera, a digital camera, a digital photo frame, a personal digital assistant, or a game machine.

In summary, the touch screen triggering method, the touch device, and the handheld device provided by the embodiments of the present invention can compare the random graphic parameters generated by the touch input with the pre-stored standard graphic parameters, and the random graphic parameters and the When the comparison result of the standard graphic parameters exceeds the preset range, the touch screen is locked, and the touch input is rejected, so that the false trigger of the touch screen is well prevented.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily within the technical scope disclosed by the present invention. Any changes or substitutions are contemplated as being within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A touch screen triggering method, comprising:

2. The touch screen triggering method according to claim 1, wherein the parameter comprises a shape and an area size of the graphic;

Receiving the touch input when a comparison result of a shape and an area size of the random pattern and a shape and an area size of the standard graphic are within a preset range;

The touch screen is locked when one of the comparison results of the shape and the area size of the random pattern and the shape and the area size of the standard pattern exceeds a preset range.

The touch screen triggering method according to claim 2, wherein before the comparing the random graphic parameters generated by the touch input with the pre-stored standard graphic parameters, the method further comprises:

Obtaining a boundary point of the random graphic;

The boundary of the random pattern is generated by connecting all or part of the boundary points by a straight line or a curve; and the shape and the area size of the random pattern are determined according to the contour generated when the boundary points are connected.

4. The touch screen triggering method according to claim 2, wherein comparing the shape of the random pattern with the shape of the standard graphic comprises:

Establishing a reference coordinate system, and using a position of the centroid of the standard figure in the reference coordinate system as a reference point;

Performing translation coordinate transformation on the random graphic in the reference coordinate system, so that the centroid of the random pattern coincides with the reference point;

Calculating a degree of non-coincidence between the random pattern and the standard pattern after centroid coincidence, The degree of fit is compared to the preset range.

The touch screen triggering method according to claim 4, wherein calculating the mismatch between the random pattern and the standard pattern after centroid coincidence comprises:

Determining a first area of the random pattern that is outside the outline of the standard pattern after the centroid coincidence, and a second area in which the standard pattern is outside the outline of the random pattern;

The larger one of the ratio of the first area to the standard pattern area and the ratio of the second area to the standard pattern area is used as the shape of the random pattern and the standard pattern.

6. A touch device, comprising:

7. The touch device according to claim 6, wherein the parameter comprises a shape and an area size of the graphic;

The operation unit is specifically configured to: when the comparison result of the shape and the area size of the random graphic and the shape and the area size of the standard graphic are within a preset range, accept the touch input; The touch screen is locked when one of a comparison result of the shape and the area size of the random pattern and the shape and the area size of the standard pattern exceeds a preset range.

The touch device according to claim 7, wherein the touch device further includes: a boundary point acquiring unit, configured to acquire a boundary point of the random graphic;

a random pattern contour generating unit, configured to connect all or part of the boundary points by a straight line or a curve to generate an outline of the random pattern;

And a parameter determining unit, configured to determine a shape and an area size of the random graphic according to a contour generated when the boundary point is connected.

The touch device according to claim 8, wherein the comparing unit comprises: a reference point determining module, configured to establish a reference coordinate system, and the centroid of the standard graphic is in the reference coordinate system Position as a reference point;

a centroid coincidence module, configured to perform a translation coordinate transformation on the random graphic in the reference coordinate system, so that a centroid of the random graphic coincides with the reference point;

a calculation module, configured to calculate a non-coincidence degree between the random pattern and the standard graphic after centroid coincidence;

A module for comparing the non-coincidence degree with the preset range.

The touch device according to claim 9, wherein the calculation module comprises: a non-coincidence area determining sub-module, configured to determine that the random pattern is outside the outline of the standard graphic after the centroid coincidence a first area, and a second area of the standard pattern outside the outline of the random pattern;

a non-coincidence determining submodule, wherein a larger one of a ratio of the first area to a standard graphic area and a ratio of the second area to a standard graphic area is used as the random graphic and the standard graphic Shape coincidence.

A handheld device, comprising the touch device according to any one of claims 6 to 10.