TWI465981B - Touch device and touch point location calibration method thereof - Google Patents

Description

Touch device and touch point position calibration method thereof

The present invention relates to a touch device and a touch point position calibration method thereof, and more particularly to a touch device capable of improving user touch accuracy and a touch point position calibration method thereof.

In recent years, with the advancement 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, the touch point that the user wants to obtain and the point sensed by the actual electronic product often have a position difference, which is usually a vertical position. Error, the design of the current touch device rarely uses this drop as one of the factors influencing the position of the touch point. Therefore, it is often the case that the user cannot press the expected position of the touch point. This deviation problem is more serious as the way in which the operating device is used is different.

For example, FIG. 1 is a schematic diagram of adjusting the position of a touch point as a conventional one. Referring to FIG. 1 , the conventional touch point position calibration method uses the input tool (such as a finger or a 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 (shown in the left figure of Figure 1), and then based on the original touch point position P1, above it (as shown in the right figure of Figure 1), the position at a preset distance is used as the calibration touch point position P2. . Although the method can achieve the purpose of the touch point position calibration, the manner in which the user uses the touch device is not the same. For example, the user may hold the touch device with one hand for operation, and may also hold the touch with both hands. The control device operates, and the angle at which the user touches the touch device may also be different. These reasons all reduce the accuracy of the conventional touch point position calibration. For the above reasons, the conventional touch point position calibration method has accuracy only under specific conditions.

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

The present invention provides a touch device including a touch sensing unit, a spatial state sensing unit, and a control unit. The touch sensing unit senses a touch action of the user to generate a touch signal. The spatial state sensing unit senses the spatial state of the touch device. The control unit is coupled to the contact sensing unit and the spatial state sensing unit, and reads an original touch point position according to the touch signal, and adjusts the original touch point position according to the spatial state of the touch device to obtain a calibration touch point. position.

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

In an embodiment of the present invention, the control unit defines a plurality of preset touch regions on the touch sensing unit according to the manner in which the user holds the touch device, and according to each preset touch region. The corresponding touch point position adjustment parameter adjusts the original touch point position.

The invention also provides a touch point position calibration method for a touch device, which comprises the following steps. Detecting the spatial status of the touch device. Sensing a touch action of the user to generate a touch signal. The original touch point position is read according to the touch signal. Adjusting the original touch point position according to the spatial state of the touch device to obtain a calibration touch point position.

In an embodiment of the invention, the spatial state of the touch device includes a tilt angle of the touch device and a motion state.

In an embodiment of the invention, the motion state described above includes swinging and shaking.

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 determining a manner in which the user holds the touch device according to the spatial state of the touch device, and adjusting the touch according to the touch device. The touch position corresponding to the signal.

In an embodiment of the invention, the step of adjusting the touch position corresponding to the touch signal includes the following steps. A plurality of preset touch regions are defined on the touch sensing unit according to the manner in which the user holds the touch device. Adjusting the touch position according to the touch point position adjustment parameter corresponding to each preset touch area.

In an embodiment of the invention, the touch point position adjustment parameter includes an orientation and a distance of the calibration 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 calibration touch point, so that the user can more easily touch the desired touch position, thereby greatly reducing the misoperation. The situation.

The above described features and advantages of the present invention will be more apparent from the following description.

FIG. 2 is a schematic diagram of a touch device according to an embodiment of the invention. Referring to FIG. 2 , the touch device 200 includes a touch sensing unit 202 , a spatial state sensing unit 204 , and a control unit 206 . The touch device 200 can be, for example, a mobile phone, a tablet computer, or other electronic device having a touch function. The touch sensing unit 202 can be, for example, a touch panel, and the spatial state sensing unit 204 can be, for example, an acceleration sensor. One or a combination of (G-sensor), gyro sensor, and e-compass. The control unit 206 is coupled to the contact sensing unit 202 and the spatial state sensing unit 204. The touch sensing unit 202 is configured to sense a touch action of the user to generate a touch signal S1. The spatial state sensing unit 204 is configured to sense a spatial state of the touch device 200. The control unit 206 determines 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 calibration 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 invention. Referring to FIG. 2 and FIG. 3 simultaneously, the control unit 206 can know the area of the input device (such as a finger or a stylus) used by the user to touch the touch device according to the touch signal S1, and calculate the center point as The original touch point position P1 is adjusted according to the spatial state of the touch device 200 sensed by the space state sensing unit 204 to obtain a calibration touch point position P2.

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

For example, if the touch device 200 is a mobile phone, when the original touch point position P1 is adjusted according to the tilt angle of the touch device 200, the space state sensing unit 204 can be set to sense that the touch device 200 is upright. In the state, the control unit 206 determines, according to the sensing result, that the user holds the touch device 200 with one hand and performs the touch operation with the other hand, thereby adjusting the rotation angle of the rotation axis Y2 relative to the coordinate axis Y1 to -22 degrees. To get the calibration touch point position P2. For example, when the spatial state sensing unit 204 senses that the touch device 200 is in a yaw state, the control unit 206 determines that the user performs a touch operation in such a manner that the touch device 200 is held by both hands, thereby rotating the axis. The rotation angle of Y2 with respect to the coordinate axis Y1 is adjusted to -60 degrees to obtain the calibrated touch point position P2.

For example, FIG. 4 is a schematic diagram showing the spatial state of the touch device 200 according to an embodiment of the invention. Referring to FIG. 4 , in the embodiment, the spatial state sensing unit 204 includes two dynamic sensors 204A and 204B respectively disposed at two ends of the touch device 200 , and the dynamic sensors 204A and 204B can respectively be, for example, a sense of acceleration. One of a G-sensor, a gyro sensor, and an e-compass. As shown in the left diagram of FIG. 4, when the user holds the touch device 200 with one hand and performs a touch operation with the other hand, the dynamic sensors 204A, 204B sense 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 sensing result of the spatial state sensing unit 204 (ie, the dynamic sensors 204A, 204B) to obtain the calibration touch point. Position P2.

In addition, as shown in the right figure of FIG. 4, when the user holds the touch device 200 with only one hand (for example, the left hand) and performs a touch operation, the dynamic sensors 204A, 204B sense the same swing direction (at the same time) Swing clockwise or counterclockwise). At this time, the control unit 206 adjusts the rotation angle of the rotation axis Y2 with respect to the coordinate axis Y1 to 30 degrees according to the sensing result of the spatial state sensing unit 204 to obtain the calibration touch point position P2.

As described above, the control unit 206 can know the manner in which the user holds the touch device 200 by using the sensing result of the spatial state sensing unit 204, and then adjust the original touch point position P1 to obtain the calibration degree. The best calibration of the touch point position P2, which greatly reduces 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 merely an exemplary embodiment, and the practical application is not limited thereto.

In some embodiments, in addition to adjusting the original touch point position P1 according to the manner in which the user holds the touch device 200, a plurality of preset touch areas may be defined on the touch sensing unit 202, and The touch point position adjustment parameters corresponding to the respective preset touch areas adjust the original touch point position. For example, FIGS. 5A-5C illustrate schematic diagrams of adjusting the position of a touch point according to another embodiment of the present invention. Referring to FIG. 5A to FIG. 5C , FIG. 5A illustrates a division of a plurality of preset touch regions T1 on the touch sensing unit 202 when the touch device 200 is held by the right hand and the touch operation is performed. FIG. When the touch operation is performed by the two-handed touch device 200, the plurality of preset touch areas T1 on the touch sensing unit 202 are divided, and FIG. 5C is the left hand holding the touch device 200. When the touch operation is performed by the right hand, the division of the plurality of preset touch regions T1 on the touch sensing unit 202 is performed. The value in the preset touch area T1 (that is, the touch point position adjustment parameter) represents the rotation angle of the rotation axis Y2 with respect to the coordinate axis Y1. Therefore, the correctness of the touch point position calibration can be further improved by adjusting the touch point position adjustment parameters corresponding to the respective preset touch areas T1 according to the user's touch habits.

It is to be noted that the number and size of the preset touch area T1 and the touch point position adjustment parameter in the preset touch area T1 are only an exemplary embodiment of the present invention, and the practical application is Not limited to this. For example, the touch point position adjustment parameter in the preset touch area T1 may also include the distance between the calibration touch point position P2 and the original touch point position P1.

In addition, when the user performs a touch operation using the finger as an input tool, since the pressing area of the finger on the touch sensing unit 202 is generally elliptical, in some embodiments, the elliptical pressing area may also be used. The long 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 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 1 mm. It should be noted that the positional relationship between the calibrated touch point position P2 and the original touch point position P1 does not cause the calibrated touch point position P2 to be lower than the original in the vertical direction due to the inversion of the touch device 200. The touch point position P1, that is, when the touch device 200 is inverted, the control unit 206 determines the calibration touch point position P2 according to the spatial state of the touch device 200, so that the calibration touch point position P2 is kept high in the vertical direction. At the original touch point position P1, the touch point that the user desires is generally higher than the actual touch point.

FIG. 6 illustrates a method for calibrating a touch point position of a touch device according to an embodiment of the invention. The method for calibrating the touch point position of the touch device may include the following steps. First, the spatial state of the touch device is detected (step S602). For example, the tilt angle of the touch device 200 and the change of the motion state can be detected, wherein the motion state includes, for example, swing and vibration. Then, the touch action of the user is sensed to generate a touch signal (step S604). Then, the original touch point position is read according to the touch signal judgment (step S606). Finally, the original touch point position is adjusted according to the spatial state of the touch device to obtain a calibration touch point position (step S608).

In summary, 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 calibration touch point, so that the user can more easily touch the desired touch position, regardless of The touch point position calibration method of the above embodiment can be applied to the manner in which the user can hold the touch device, thereby effectively improving the problem of inaccurate touch.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

P1‧‧‧ original touch point location

P2‧‧‧ Calibration touch point position

200‧‧‧ touch device

202‧‧‧Touch sensing unit

204‧‧‧Spatial state sensing unit

206‧‧‧Control unit

S1‧‧‧ touch signal

X1, Y1‧‧‧ original coordinate axis

X2, Y2‧‧‧ rotating shaft

204A, 204B‧‧‧ Dynamic Sensor

T1‧‧‧Preset touch area

Steps of S602~S608‧‧‧ Touch Point Position Calibration Method

FIG. 1 is a schematic diagram of adjusting the position of a touch point in the prior art.

FIG. 2 is a schematic diagram of a touch device according to an embodiment of the invention.

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

FIG. 4 is a schematic diagram showing the spatial state of the touch device according to an embodiment of the invention.

5A-5C are schematic diagrams showing the adjustment of the position of a touch point according to another embodiment of the present invention.

FIG. 6 illustrates a method for calibrating a touch point position of a touch device according to an embodiment of the invention.

S602~S608. . . Steps of the touch point position calibration method

Claims (6)

A touch sensing device includes: a touch sensing unit that senses a touch action of a user to generate a touch signal; and a spatial state sensing unit that senses a spatial state of the touch device; a control unit is coupled to the touch sensing unit and the spatial state sensing unit, and reads an original touch point position according to the touch signal, and adjusts the original touch point position according to the spatial state of the touch device. In order to obtain a calibrated touch point position, wherein the control unit determines the manner in which the user holds the touch device according to the spatial state of the touch device, and according to the manner in which the user holds the touch device A plurality of preset touch regions are defined on the touch sensing unit, and the original touch point position is adjusted according to the touch point position adjustment parameters corresponding to the preset touch regions. The touch device of claim 1, wherein the spatial state of the touch device includes an angle of inclination and a state of motion of the touch device, and the motion state of the touch device includes a swing and a vibration. The touch device of claim 1, wherein the touch point position adjustment parameter comprises an orientation and a distance of the calibration touch point position relative to the original touch point position. A touch point position calibration method for a touch device includes: detecting a spatial state of the touch device; sensing a touch action of a user to generate a touch signal; Determining an original touch point position according to the touch signal; and adjusting the original touch point position according to the spatial state of the touch device to obtain a calibration touch point position; wherein the touch device is adjusted according to the spatial state of the touch device The step of determining the position of the original touch point includes: determining, according to the spatial state of the touch device, the manner in which the user holds the touch device; and the touch sensing unit according to the manner in which the user holds the touch device Defining a plurality of preset touch regions; and adjusting the touch position according to the touch point position adjustment parameters corresponding to the preset touch regions. The touch point position calibration method of the touch device of claim 4, wherein the spatial state of the touch device includes a tilt angle and a motion state of the touch device, and the motion state includes a swing and a vibration. The touch point position calibration method of the touch device of claim 4, wherein the touch point position adjustment parameter comprises an orientation and a distance of the calibration touch point position relative to the original touch point position.