CN103425308A - Touch device and touch point position calibration method thereof - Google Patents

Abstract

The present invention provides a touch device and a touch point position calibration method thereof, wherein the original touch point position is adjusted according to the spatial state of the touch device to obtain a calibrated touch point position.

Description

Touch device and touch point position calibration method thereof

technical field

The present invention relates to a touch device and a method for calibrating the positions of touch points thereof, and in particular to a touch device and a method for calibrating the positions of touch points thereof which can improve the accuracy of user's touch control.

Background technique

In recent years, with the progress of touch technology and the rapid development of various applications of electronic products, touch devices have become very popular. However, when a user uses an electronic product with a touch function, there is actually a gap between the touch point that the user wants to obtain and the point detected by the actual electronic product, and the gap is usually a vertical position. Error, the design of the current general touch device seldom takes this drop as one of the influencing factors for judging the position of the touch point, so it often happens that the user cannot obtain the position of the touch point as expected. And along with the different modes of using the operating device, this deviation problem is more serious.

For example, FIG. 1 is a schematic diagram of a known method for adjusting the position of a touch point. Please refer to FIG. 1 , the generally known touch point position calibration method is to use the input tool (such as finger or stylus) used by the user to touch the area of the touch device to calculate the center point as an original touch point position P1 (as shown in the left figure of Figure 1), and then based on the original touch point position P1, the position at a preset distance above it (as shown in the right figure of Figure 1) is used as the calibration touch point position P2 . Although this method can achieve the purpose of touch point position calibration, because users use touch devices in different ways, for example, users may hold the touch device with one hand to operate, or hold the touch device with both hands. In addition, the angle at which the user touches the touch device may also be different. These reasons will reduce the accuracy of the calibration of the known touch point positions. Based on the above reasons, the known methods for calibrating the positions of touch points are only accurate under certain conditions.

Contents of the invention

The invention provides a touch device and a touch point position calibration method thereof, which can improve the accuracy of a user's touch action.

The present invention provides a touch device, including a touch detection unit, a space state detection unit and a control unit. Wherein the touch detection unit detects the user's touch action to generate a touch signal. The space state detection unit detects the space state of the touch device. The control unit is coupled to the touch detection unit and the space state detection unit, judges an original touch point position according to the touch signal, and adjusts the original touch point position according to the space state of the touch device to obtain a calibrated touch point position.

In an embodiment of the present invention, the above-mentioned control unit also judges the manner in which the user holds the touch device according to the spatial state of the touch device, and adjusts the position of the original touch point accordingly.

In an embodiment of the present invention, the above-mentioned control unit also defines a plurality of preset touch areas on the touch detection unit according to the way the user holds the touch device, and according to the corresponding The touch point position adjustment parameter adjusts the original touch point position.

The invention also proposes a method for calibrating the position of a touch point of a touch device, which includes the following steps. Detect the spatial state of the touch device. A touch action of the user is detected to generate a touch signal. An original touch point position is judged according to the touch signal. The original touch point position is adjusted according to the spatial state of the touch device to obtain a calibrated touch point position.

In an embodiment of the present invention, the above-mentioned spatial state of the touch device includes an inclination angle and a motion state of the touch device.

In an embodiment of the present invention, the aforementioned motion state includes swing and vibration.

In an embodiment of the present invention, the step of adjusting the position of the original touch point according to the spatial state of the touch device includes judging the way the user holds the touch device according to the spatial state of the touch device, and adjusting the touch signal accordingly The corresponding touch position.

In an embodiment of the present invention, the step of adjusting the touch position corresponding to the touch signal includes the following steps. A plurality of preset touch areas are defined on the touch detection unit according to the way the user holds the touch device. The touch position is adjusted according to the touch point position adjustment parameters corresponding to each preset touch area.

In an embodiment of the present invention, the touch point position adjustment parameters include calibration of the orientation and distance of the touch point position relative to the original touch point position.

Based on the above, the present invention adjusts the position of the original touch point according to the spatial state of the touch device to obtain the position of the calibrated touch point, so that the user can more easily touch the desired touch position, thereby greatly reducing errors. The situation of the operation.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a known schematic diagram of adjusting the position of a touch point;

2 is a schematic diagram of a touch device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of adjusting the position of a touch point according to an embodiment of the present invention;

4 is a schematic diagram of a spatial state of a touch device according to an embodiment of the present invention;

5A-5C are schematic diagrams of adjusting the position of touch points according to another embodiment of the present invention;

FIG. 6 is a diagram illustrating a touch point position calibration method of a touch device according to an embodiment of the present invention.

Explanation of reference signs:

P1: original touch point position;

P2: Calibrate the touch point position;

200: touch device;

202: touch detection unit;

204: space state detection unit;

206: control unit;

S1: touch signal;

X1, Y1: original coordinate axis;

X2, Y2: axis of rotation;

204A, 204B: motion detectors;

T1: preset touch area;

S602˜S608: Steps in the method for calibrating the position of the touch points.

Detailed ways

FIG. 2 is a schematic diagram of a touch device according to an embodiment of the present invention. Referring to FIG. 2 , the touch device 200 includes a touch detection unit 202 , a space state detection unit 204 and a control unit 206 . Wherein the touch device 200 can be, for example, a mobile phone, a tablet computer or other electronic devices with a touch function, the touch detection unit 202 can be, for example, a touch panel, and the space state detection unit 204 can be, for example, an acceleration detector (G- sensor), gyro sensor, electronic compass (e-compass), or a combination thereof. The control unit 206 is coupled to the touch control detection unit 202 and the space state detection unit 204 . The touch detection unit 202 is used for detecting a user's touch action to generate a touch signal S1. The space state detection unit 204 is used for detecting the space state of the touch device 200 . The control unit 206 judges an original touch point position according to the touch signal S1 , and adjusts the original touch point position according to the spatial state of the touch device 200 to obtain a calibrated touch point position.

For example, FIG. 3 is a schematic diagram of adjusting the position of a touch point according to an embodiment of the present invention. Please refer to FIG. 2 and FIG. 3 at the same time. According to the touch signal S1, the control unit 206 can know the area where the input tool (such as a finger or a stylus) used by the user touches the touch device, and calculate the center point accordingly as An original touch point position P1, and then adjust the original touch point position P1 according to the spatial state of the touch device 200 detected by the spatial state detection unit 204 to obtain a calibrated touch point position P2.

As shown in FIG. 3 , the coordinate axes X1 and Y1 are the original coordinate axes of the spatial state detection unit 204 , and the rotation axes X2 and Y2 are the coordinate axes based on which the control unit 206 adjusts the original touch point position P1 . The angle between the coordinate axis Y1 and the rotation axis Y2 changes with the tilt angle and motion state of the touch device 200 detected by the spatial state detection unit 204, and the calibration touch point position P2 and the original touch point position P1 can be changed. For example, it is set to 1 to 4 centimeters (mm), but it is not limited thereto.

For example, assuming that the touch device 200 is a mobile phone, when adjusting the original touch point position P1 according to the inclination angle of the touch device 200, it can be set that when the space state detection unit 204 detects that the touch device 200 is in an upright state , the control unit 206 judges that the user is holding the touch device 200 with one hand and performing a touch operation with the other hand according to the detection result, so the rotation angle of the rotation axis Y2 relative to the coordinate axis Y1 is adjusted to -22 degrees, To obtain the calibration touch point position P2. For another example, when the spatial state detection unit 204 detects that the touch device 200 is in the yaw state, the control unit 206 determines that the user is holding the touch device 200 with both hands to perform the touch operation, and thus sets the rotation axis Y2 relative to The rotation angle of the coordinate axis Y1 is adjusted to -60 degrees to obtain the calibration touch point position P2.

As another example, FIG. 4 is a schematic diagram of a spatial state of a touch device 200 according to an embodiment of the present invention. Please refer to FIG. 4 , in this embodiment, the spatial state detection unit 204 includes two dynamic detectors 204A, 204B respectively arranged at both ends of the touch device 200, and the dynamic detectors 204A, 204B can be, for example, acceleration detectors (G -sensor), gyro sensor, and electronic compass (e-compass). As shown in the left figure of FIG. 4 , when the user holds the touch device 200 with one hand and performs a touch operation with the other hand, the motion detectors 204A and 204B detect the same vibration direction. At this time, the control unit 206 adjusts the rotation angle of the rotation axis Y2 relative to the coordinate axis Y1 to -22 degrees according to the detection results of the space state detection unit 204 (ie, the motion detectors 204A and 204B), so as to obtain the calibrated touch point position P2 .

In addition, as shown in the right figure of FIG. 4 , when the user only holds the touch device 200 with one hand (for example, the left hand) and performs a touch operation, the motion detectors 204A and 204B both detect the same swinging direction (simultaneously in the same direction). clockwise or counterclockwise). At this time, the control unit 206 adjusts the rotation angle of the rotation axis Y2 relative to the coordinate axis Y1 to 30 degrees according to the detection result of the space state detection unit 204 to obtain the calibration touch point position P2.

As mentioned above, the control unit 206 can know the way the user holds the touch device 200 according to the detection result of the space state detection unit 204, and then adjust the original touch point position P1 accordingly to obtain the best calibration. The calibrated touch point position P2 can greatly reduce the situation of misoperation. It should be noted that, the adjustment angle between the rotation axis Y2 and the coordinate axis Y1 listed in the above embodiment is only an exemplary embodiment, and is not limited in practical application.

In some embodiments, in addition to adjusting the original touch point position P1 according to the way the user holds the touch device 200, multiple preset touch areas can also be defined on the touch detection unit 202, and according to each The touch point position adjustment parameter corresponding to the preset touch area adjusts the original touch point position. For example, FIGS. 5A-5C are schematic diagrams of adjusting the position of a touch point according to another embodiment of the present invention. Please refer to FIGS. 5A-5C , wherein FIG. 5A shows the division of multiple preset touch areas T1 on the touch detection unit 202 when only the right hand holds the touch device 200 and performs a touch operation. When holding the touch device 200 with both hands for touch operation, the division of multiple preset touch regions T1 on the touch detection unit 202, and FIG. When a touch operation is performed, the division of a plurality of preset touch regions T1 on the touch detection unit 202 . The value in the default touch area T1 (ie, the touch point position adjustment parameter) represents the rotation angle of the rotation axis Y2 relative to the coordinate axis Y1. In this way, by adjusting the touch point position adjustment parameters corresponding to each preset touch area T1 according to the user's touch habit, the accuracy of touch point position calibration can be further improved.

It is worth noting that the number and size of the preset touch regions T1 and the adjustment parameters of the touch point positions in the preset touch regions T1 in the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not practically applicable. This is not the limit. For example, the preset touch point position adjustment parameters in the touch area T1 may also include calibrating the distance between the touch point position P2 and the original touch point position P1.

In addition, when the user performs a touch operation with a finger as an input tool, since the pressing area presented by the finger on the touch detection unit 202 is usually elliptical, in some embodiments, the length of the elliptical pressing area can also be axis is used as a rotation axis to determine the orientation and distance of the calibration touch point position P2 relative to the original touch point position P1. For example, the calibration touch point position P2 on the rotation axis can be set to be higher than the original touch point position P1 in the vertical direction, and the distance between the calibration touch point position P2 and the original touch point position P1 is set to 1mm. It is worth noting that the above-mentioned height relationship between the calibration touch point position P2 and the original touch point position P1 will not make the calibration touch point position P2 vertically lower than the original touch point position due to the inversion of the touch device 200 The touch point position P1, that is, when the touch device 200 is turned upside down, the control unit 206 will determine the calibration touch point position P2 according to the spatial state of the touch device 200, so that the calibration touch point position P2 remains high in the vertical direction At the original touch point position P1, the touch point desired by the user is usually higher than the actual touch point.

FIG. 6 is a diagram illustrating a touch point position calibration method of a touch device according to an embodiment of the present invention. The method for calibrating the positions of the touch points of the above-mentioned touch device may include the following steps. First, the spatial state of the touch device is detected (step S602). For example, the tilt angle and the change of the motion state of the touch device 200 can be detected, wherein the motion state includes, for example, swing and vibration. Next, the user's touch action is detected to generate a touch signal (step S604 ). Then, the original touch point position is judged according to the touch signal (step S606). Finally, the original touch point position is adjusted according to the spatial state of the touch device to obtain a calibrated touch point position (step S608 ).

To sum up, the present invention adjusts the position of the original touch point according to the spatial state of the touch device to obtain the calibrated touch point position, so that the user can more easily touch the desired touch position, regardless of No matter how the user holds the touch device, the method for calibrating the position of the touch point in the above embodiment can be applied, so as to effectively improve the problem of inaccurate touch control.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting 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 is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A touch device, characterized in that, comprising: a touch detection unit, detecting a touch action of a user to generate a touch signal; a spatial state detection unit, which detects the spatial state of the touch device; and A control unit, coupled to the touch detection unit and the space state detection unit, judges an original touch point position according to the touch signal, and adjusts the original touch point position according to the space state of the touch device, so as to Obtain a calibration touch point position. 2 . The touch device according to claim 1 , wherein the spatial state of the touch device includes an inclination angle and a motion state of the touch device, and the motion state of the touch device includes swing and vibration. 3. The touch device according to claim 1, wherein the control unit also judges how the user holds the touch device according to the spatial state of the touch device, and adjusts the original touch control accordingly. point location. 4. The touch device according to claim 3, wherein the control unit further defines a plurality of preset touch areas on the touch detection unit according to how the user holds the touch device, And adjust the original touch point position according to the touch point position adjustment parameters corresponding to the preset touch areas. 5 . The touch device according to claim 4 , wherein the touch point position adjustment parameters include the orientation and distance of the calibration touch point position relative to the original touch point position. 6. A touch point position calibration method of a touch device, characterized in that, comprising: detecting the spatial state of the touch device; Detecting a touch action of a user to generate a touch signal; Judging an original touch point position according to the touch signal; and The original touch point position is adjusted according to the spatial state of the touch device to obtain a calibration touch point position. 7. The method for calibrating the position of a touch point of a touch device according to claim 6, wherein the spatial state of the touch device includes an inclination angle and a motion state of the touch device, and the motion state includes swing and vibration . 8. The method for calibrating the position of a touch point of a touch device according to claim 6, wherein the step of adjusting the position of the original touch point according to the spatial state of the touch device comprises: The manner in which the user holds the touch device is determined according to the spatial state of the touch device, and accordingly the touch position corresponding to the touch signal is adjusted. 9. The method for calibrating the position of a touch point of a touch device according to claim 8, wherein the step of adjusting the touch position corresponding to the touch signal comprises: defining a plurality of preset touch areas on the touch detection unit according to how the user holds the touch device; and The touch position is adjusted according to the touch point position adjustment parameters corresponding to each preset touch area. 10. The touch point position calibration method of a touch device according to claim 9, wherein the touch point position adjustment parameters include the orientation and distance of the calibrated touch point position relative to the original touch point position .

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