CN103176671B - Touch electronic device and touch track correction method - Google Patents

Abstract

The invention provides a touch electronic device, which includes a touch panel, a processor and a calibration module. Among them, the processor detects at least one touch point at an interval, and the processor calculates the simulation point based on the detected touch point. When the processor detects that the touch point leaves the touch panel, _the correction module determines the coordinates of the touch point when it leaves the touch panel ₍ The calculated coordinates (X ₂ , Y ₂ ) of the simulation point are used to calculate a plurality of correction points to correct the error between the simulation point and the correction point. The touch electronic device performs touch based on the simulation point and the correction point. control operation. In addition, the present invention also provides a touch trajectory correction method.

Description

Touch electronic device and method for correcting touch track

technical field

The invention relates to a touch electronic device and a method for correcting a touch track, in particular to a touch electronic device capable of calculating correction points and a method for correcting a touch track.

Background technique

At present, the mainstream of mobile electronic devices, such as smart phones or tablet computers, all abandon traditional keyboard and mouse devices and use touch panels as standard input and output interfaces to cope with the trend of miniaturization of electronic devices. Through the touch panel, the mobile electronic device provides the user with a touch operation by touching or sliding a finger on the touch panel.

With the rapid development of touch and hardware technology, touch operations are becoming more and more user-friendly, and many touch operations are becoming more and more delicate. Therefore, the resolution requirements for touch traces are also getting higher and higher, otherwise it will be easy A misjudgment occurred or the drawn touch track was not as expected.

When ordinary people operate on the touch panel, the deviation of the center of gravity or the variation of the contact area will cause the variation of the touch point and make the execution track appear non-smooth. Touch points, but will further linearize the touch points. At present, people in the touch industry mostly use an interpolation method to correct the touch trajectory to smooth the trajectory drawn by the user on the touch panel.

Please refer to Figure 1 and Figure 2, which are schematic diagrams (1) and (2) of the prior art respectively. When the finger slides on the touch panel 101 of the touch electronic device 10, the touch panel 101 will detect the touch point 250 (including A1~A12), at this time, the processor of the touch electronic device 10 will The contact points 250 are linearized to obtain the simulation points 260 ( A1 ′˜A12 ′). Among them, A1' is A1; A2' is calculated by interpolating A1' and A2; A3' is calculated by interpolating A2' and A3; A4' is calculated by interpolating A3' and A4; and so on .

However, the linearization process also causes a problem of time lag, that is, the touch point A12 at which the finger leaves the touch panel 101 after completing the operation will have a gap with the simulated point calculated at the end of the linearization process. An existing method of calculating the analog point 260 stops the calculation immediately when the touch object leaves the touch panel. At this time, the calculation of the analog point may only stop until A4', resulting in the formation of the analog point 260. The trajectory of the touch does not match or is too different from the real touch trajectory. Especially when the finger moves faster, the difference will be more obvious. This difference is likely to cause a misjudgment of the touch operation or cause the drawn touch track to be unsatisfactory.

Another approach in the prior art is to first store the touch point 250 in the register, and then the processor obtains the touch point 250 from the register for processing. In this way, although all touch points 250 can be The simulated point 250 is obtained through calculation, but the response time of the touch operation will be prolonged and the touch operation will be delayed.

Contents of the invention

In view of this, the present invention provides a touch electronic device, including a touch panel, a processor and a calibration module. Wherein, the processor detects at least one touch point every interval, and the processor calculates the simulated point according to the detected touch point. When the processor detects that the touch point leaves the touch panel, the correction module detects that the touch point leaves the touch panel according to the coordinates (X ₁ , Y ₁ ) of the touch point and the final result of the processor. The calculated coordinates (X ₂ , Y ₂ ) of the simulated points are used to calculate multiple calibration points to correct the error between the simulated point and the touch point. The touch electronic device uses the simulated point and the calibration point Bits perform touch operations.

The present invention also provides a method for correcting a touch track, which is suitable for a touch electronic device with a touch panel, a processor and a calibration module. The method for correcting the touch trajectory includes: the processor detects at least one touch point every interval, and the processor calculates the simulated point according to the detected touch point; when the processor detects that the touch object leaves When the touch panel is touched, the correction module detects the coordinates (X ₁ , Y ₁ ) of the touch point when the touch point leaves the touch panel detected by the processor and the coordinates of the simulated point finally calculated by the processor ( X ₂ , Y ₂ ) calculate multiple calibration points to correct the error between the simulated point and the touched point. Wherein, the touch electronic device performs a touch operation through the simulated point and the corrected point.

To sum up, the present invention does not need a register, but only needs the coordinates (X ₁ , Y ₁ ) of the touch point when the touch point leaves the touch panel detected by the processor and the final calculation by the processor The coordinates (X ₂ , Y ₂ ) of the simulated points are calculated to calculate a plurality of calibration points, so that the touch electronic device can perform touch operations through the simulated points and the calibration points, which solves the problems in the prior art. various problems.

Description of drawings

Fig. 1 is the prior art schematic diagram (1) of the present invention;

Fig. 2 is the prior art schematic diagram (2) of the present invention;

3 is a schematic diagram of a touch electronic device of the present invention;

Fig. 4 is a schematic diagram of touch points and simulated points of the present invention;

FIG. 5 is a flowchart of a method for correcting a touch track in the present invention.

reference sign

10: Touch Electronic Devices 101: Touch Panel

20: Touch Electronic Devices 201: Touch Panel

250, A1~A12: Touch point 260, A1’~A12’: Analog point

270: Calibration point

detailed description

Please refer to FIG. 3 and FIG. 4 , which are respectively a schematic diagram of the touch electronic device of the present invention and a schematic diagram of the touch point and the simulated point of the present invention. The touch electronic device 20 includes: a touch panel 201 , a processor electrically connected to the touch panel, and a calibration module electrically connected to the processor. Wherein, the processor detects at least one touch point 250 at intervals, and then calculates the simulation point 260 according to the touch point 250. method using interpolation. That is, A1' is A1, A2' is the interpolation of A2 and A1', A3' is the interpolation of A3 and A2', A4' is the interpolation of A4 and A3', and A5' is Interpolation of two points A5 and A4'. However, the method of calculating the simulated point 260 may vary depending on the manufacturing personnel or the type of the touch electronic device 20 , and it is not only possible to use the aforementioned interpolation method for calculation.

When the processor detects that the touch object (finger or capacitive stylus) leaves the touch panel 201 (that is, when the touch point 250 is not detected), the processor stops calculating the simulation point 260, and the correction module starts to function . At this time, the finally calculated analog point is A5', and the correction module detects the coordinates (X ₁ , Y ₁ ) of the touch point A5 when the touch object leaves the touch panel 201 detected by the processor and the final result of the processor. The calculated coordinates (X ₂ , Y ₂ ) of the simulated point A5' calculate a plurality of calibration points 270 for correcting the error between the simulated point 260 and the touch point 250, and the touch electronic device 20 uses The touch operation is performed by simulating the point 260 and correcting the point 270 .

In one embodiment, when the finger or the capacitive stylus leaves the surface of the touch panel 201 , the touch panel 201 will not detect any touch point 250 , and at this moment, the calibration module starts to calculate the calibration point 270 . The number of calibration points 270 may be three, wherein the coordinates of the three calibration points 270 are respectively and (X ₁ ,Y ₁ ).

The calibration module does not have to calculate 3 calibration points, assuming that the calibration module calculates n calibration points 270, then the coordinate formula of the n calibration points 270 is Wherein the value of a is 1 to n, and in one embodiment, the value of n is in the range of 3 to 6.

Regardless of the value of n in each embodiment, the coordinate (X ₁ , Y ₁ ) must be included in each calibration point 270 , so that no matter how much time delay is caused by the linearization process, the finger leaves the touch panel 201 The touch point A5 on the surface must be one of the correction points 270 .

Please refer to FIG. 5 , which is a flow chart of a method for correcting touch traces of the present invention, which is applicable to a touch electronic device 20 having a touch panel 201, a processor and a correction module, including:

Step S01: Detect at least one touch point every interval.

The processor detects at least one touch point 250 at intervals, and when the user moves a finger or a capacitive stylus on the surface of the touch panel 201 , it will be detected by the processor.

Step S02: Determine whether the touch object leaves the touch panel.

Since the processor detects at least one touch point 250 at intervals, when no touch point 250 is detected for two consecutive times, it is determined that the touch object has left the touch panel. If the touch object has not left the touch panel, go to step S03; if the touch object has left the touch panel, go to step S04.

Step S03: Calculate the simulated point according to the touched point.

The processor calculates the simulated point 260 according to the detected touch point 250 , and the calculation method is different depending on the manufacturing personnel or the type of the touch electronic device 20 , which belongs to the prior art.

Step S04: Calculating multiple calibration points.

When the touch object has left the surface of the touch panel 201, since no touch point 250 is detected, the correction module detects the touch point 250 when the touch point leaves the touch panel 201 according to the processor. coordinates (X ₁ , Y ₁ ) and the coordinates (X ₂ , Y ₂ ) of the simulated point 260 finally calculated by the processor to calculate a plurality of correction points 270 to correct the difference between the simulated point and the touch point error between. The touch electronic device 20 performs touch operations according to the simulated points 260 and the corrected points 270 .

In step S04, three calibration points 270 are calculated, and their coordinates are respectively and (X ₁ , Y ₁ ). In addition, this step does not necessarily calculate three calibration points 270, assuming that the calibration module calculates n calibration points 270, then the coordinate formula of the n calibration points 270 is Wherein the value of a is 1 to n, and in one embodiment, the value of n is in the range of 3 to 6.

In each embodiment, regardless of the value of n, the coordinate (X ₁ , Y ₁ ) must be included in each calibration point 270 , so that no matter how much time delay is caused by the linearization process, the touching object The touch point A5 when leaving the surface of the touch panel 201 must be one of the calibration points 270 .

Although the present invention is disclosed above with the foregoing preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and modifications to it without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention should be defined by the appended claims of this specification.

Claims (8)

1. a bearing calibration for touch trajectory, is characterized in that, is applicable to a screen touch electronic device with a contact panel, a processor and a correction module, comprises:

This processor detects at least one touch points position every an interval time;

This processor is according to this touching calculation of points one simulation points position; And

When processor detects that touch points leaves this contact panel, the coordinate (X of this touch points position when touch points of this correction module detected by this processor leaves contact panel ₁, Y ₁) and the coordinate (X of this simulation points position that finally calculates of this processor ₂, Y ₂) calculate n check point position, in order to correct the error between this simulation points position and this touch points position, the coordinate formula of this n check point position is wherein the value of a is 1 to n;

Wherein, this screen touch electronic device performs touch control operation according to this simulation points position and this check point position.

2. the bearing calibration of touch trajectory according to claim 1, is characterized in that, in the step calculating those check point positions, calculates three check point positions.

3. the bearing calibration of touch trajectory according to claim 2, is characterized in that, the coordinate of these three check point positions is respectively and (X ₁, Y ₁).

4. the bearing calibration of touch trajectory according to claim 1, is characterized in that, the value of n is in the scope of 3 to 6.

5. a screen touch electronic device, is characterized in that, comprises:

One contact panel;

One processor, is electrically connected at this contact panel, detects at least one touch points position every an interval time, and according to this touching calculation of points one simulation points position; And

One correction module, is electrically connected at this processor, when this processor detects that touch points leaves this contact panel, and the coordinate (X of this touch points position when touch points detected by this processor leaves this contact panel ₁, Y ₁) and the coordinate (X of this simulation points position that finally calculates of this processor ₂, X ₂) calculate n check point position, in order to correct the error between this simulation points position and this touch points position, the coordinate formula of this n check point position is wherein the value of a is 1 to n.

6. screen touch electronic device according to claim 5, is characterized in that, this correction module calculates three check point positions.

7. screen touch electronic device according to claim 6, is characterized in that, the coordinate of these three check point positions is respectively and (X ₁, Y ₁).

8. screen touch electronic device according to claim 5, is characterized in that, the value of n is in the scope of 3 to 6.