TW201638762A - Touch apparatus and touch detecting method thereof - Google Patents

Abstract

A touch apparatus and a touch detecting method thereof are provided. The method includes following steps. A touch information of an interference event is obtained through a touch panel. When it is determined that the touch information corresponds to a threshold condition, an interfered touch area induced by the interference event on the touch panel is determined to be an effective operation area, so as to execute a touch detection in the interfered touch area according to the touch information. The threshold condition is determined according to an interval of energy intensity detected by the touch panel.

Description

Touch device and touch detection method thereof

The present invention relates to a touch detection technology, and more particularly to a touch device capable of providing convenient operation and a touch detection method thereof.

With the development of touch technology, touch panels have been widely used in the screens of electronic devices such as mobile phones, notebook computers, and tablet computers. The touch panel is easy to operate and has high intuitiveness, making it popular among consumers and becoming a mainstream trend in the market. In general, in order to avoid erroneous detection results caused by the palm of the user during the touch operation, the designer usually designs a palm rejection function in the detection mechanism of the touch panel.

In the prior art, the anti-touch function is implemented when the touch panel detects a touch operation and simultaneously determines whether another touch operation with a larger touch area (for example, greater than 25×25 mm) is detected. . If so, the electronic device may attribute the detected other touch operation to a Palm Rejection, thereby ignoring the another touch operation (eg, not reacting to the other touch) Operational execution Any corresponding processing behavior).

However, when the user accidentally spills water or other liquid on the touch panel, the above-mentioned function of preventing accidental touch may also be triggered because the corresponding touch area of the liquid is too large, so that the liquid residual area is regarded as the user. The mis-touch behavior and the touch operation performed on the liquid residual area are ignored and the user is not allowed to operate.

In view of the above, the present invention provides a touch device and a touch detection method thereof, which can avoid the problem that the operation cannot be performed due to liquid interference, thereby improving the convenience of operation.

The invention proposes a touch detection method. The method includes obtaining touch information of an interference event through the touch panel, and determining that the touched area touched by the interference event is an effective operation area when determining that the touch information meets the threshold condition, Touch information is detected in the touched area of the touch. The threshold condition is determined according to the energy intensity interval detected by the touch panel.

The invention further provides a touch device. The touch device includes a touch panel and a processing unit. The processing unit is coupled to the contact panel. The processing unit obtains the touch information of the interference event through the touch panel, and determines that the touched area touched by the interference event is an effective operation area when the touch information meets the threshold condition, according to the touch The information is detected in the touched area of the interference. The threshold condition is determined according to the energy intensity interval detected by the touch panel.

Based on the above, the touch device and the touch detection method thereof are determined by determining whether the touch information of the interference event is within the energy intensity interval detected by the touch panel, thereby determining the interference. The event is caused by liquid interference, and the disturbed touch area induced by the interference event is set as an effective operation area, and the touch information of the interference event is further utilized to verify the affected touch area, so that the disturbed touch is touched. The area is capable of touch detection. In this way, the embodiment of the present invention can improve the problem that the touch operation cannot be performed due to liquid interference, thereby improving the accuracy of determining the false touch behavior and making the touch device more convenient in use.

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

100‧‧‧ touch device

110, 410‧‧‧ touch panel

120‧‧‧Processing unit

412‧‧‧Impacted touch area

414‧‧‧Touch area

S210~S230, S310~S350‧‧‧ steps

FIG. 1 is a block diagram of a touch device according to an embodiment of the invention.

2 is a flow chart of a touch detection method according to an embodiment of the invention.

FIG. 3 is a flowchart of a touch detection method according to an embodiment of the invention.

FIG. 4 is an example of touch information according to an embodiment of the invention.

When water or other liquid remains on the touch panel, since the liquid is usually a conductor, the detection result of the touch panel may be disturbed, and the energy intensity detected by the liquid residual area is uniformly increased. Wherein, the increased energy intensity is still lower than the energy intensity caused by the user's touch operation. Based on the above characteristics, the touch device and the touch detection method thereof according to the embodiments of the present invention determine whether the touch information is in an energy interval to accurately identify the liquid residual interference on the touch device. event. In addition, in the embodiment of the present invention, the interfered touch area induced by the interference event can be regarded as an effective operation area, and the interfered touch area is further verified to enable the touched touch area to be touched. Detection. Therefore, the embodiment of the present invention can overcome the problem that the touch operation cannot be performed due to liquid interference, and can improve the accuracy of determining the false touch behavior, so that the touch device can have more convenient usability.

FIG. 1 is a block diagram of a touch device according to an embodiment of the invention. Referring to FIG. 1 , the touch device 100 of the present embodiment is an electronic device having a computing function, such as a desktop computer, a notebook computer, a tablet computer, or a smart phone, and the scope thereof is not limited herein. The touch device 100 includes a touch panel 110 and a processing unit 120, and its functions are described as follows.

The touch panel 110 is, for example, a liquid crystal display (LCD), a Light-Emitting Diode (LED) display, a Field Emission Display (FED), or other types of displays, and a resistive type. Capacitor, optical, ultrasonic and other touch panels are combined to provide display and touch operation functions. In this embodiment, the touch The panel 110 can detect an interference event (for example, a liquid remaining on the touch panel 110) or whether a touch event occurs (for example, a user's finger or other operating body performs a touch action on the touch panel 110). And produce corresponding sensing results.

The processing unit 120 is, for example, a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (DSP), programmable Controllers, Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or other similar devices or combinations of these devices. In this embodiment, the processing unit 120 can control the overall operation of the touch device 100 and implement the touch detection method provided by the embodiment of the present invention.

In addition, the touch device 100 may further include a storage device (not shown), and is not limited thereto. The storage device can be used to store data (such as the energy intensity of the interference event detected by the touch panel 110, the position coordinate, and the like, or the report point and communication information to be transmitted by the operating system of the touch device 100). Processing unit 120 accesses. The storage device is, for example, any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory (Flash memory), hard disk. Or other similar devices or a combination of these devices.

FIG. 2 is a flow chart of a touch detection method according to an embodiment of the invention, and is applicable to the touch device 100 of FIG. 1 . The detailed steps of the method will be described below in conjunction with the various elements shown in FIG.

Referring to FIG. 1 and FIG. 2 simultaneously, in step S210, the processing unit 120 obtains touch information of the interference event through the touch panel 110. Specifically, in an embodiment, the touch information includes, for example, energy information (such as energy intensity or its variation), area information, and the like, and an interference event such as water or other liquid remains on the touch panel 110. Case. Since the liquid is usually a conductor, the interference event may affect the touch detection result of the touch panel 110 and may cause the energy intensity detected by the touch panel 110 to change. The energy intensity is, for example, the magnitude of the signal generated by the touch panel 110 according to the detected touch event. The touch event is, for example, from a touch action performed by the user with the finger on the touch panel 110, an interference event such as background noise or liquid residue, and the like. In an embodiment, the touch panel 110 can obtain energy intensity by detecting energy changes per unit time.

Then, in step S220, when it is determined that the touch information meets the threshold condition, the processing unit 120 may determine that the disturbed touch area sensed by the interference event on the touch panel 110 is an effective operation area, thereby processing in step S230. The unit 120 performs touch detection in the interfered touch area according to the touch information.

In an embodiment, the disturbed touch area may be the same as the appearance (eg, area and shape) of the liquid remaining on the touch panel 110, or may have a specific correspondence relationship. The invention is not limited thereto. In addition, the effective operation area refers to the processing unit 120 further reporting the detection result obtained in the area to the operating system of the touch device 100, and the detection result (such as energy information and coordinates) is calculated by the operating system. The information is temporarily stored in a storage unit such as a temporary storage device to provide an application to be executed on the touch device 100 to perform a corresponding operation. In contrast, if it is determined that the interference event is not a liquid residual condition, the processing unit 120 regards the sensing area corresponding to the interference event as an invalid operation area, and does not report the detection result obtained in the area to the operating system, or The touch event corresponding to the detection result can be ignored as an invalid operation by not providing the detection result to the application.

In addition, in an embodiment, the threshold condition is determined according to, for example, an energy intensity interval detected by the touch panel 110. For example, the touch panel 110 may detect that the user performs a touch operation (ie, detects a touch event), background noise (ie, no touch event is detected), and the aforementioned interference events. In other words, if the energy intensity generated by the touch panel 110 detecting the above situation is arranged from large to small, for example, the following sequence is obtained: the user's touch operation, interference event, and background noise. It can be seen that the processing unit 120 can set the energy intensity interval for determining the interference event, for example, according to the energy intensity corresponding to the touch operation of the finger and the background noise respectively. Therefore, the processing unit 120 can determine whether the interference event is from the liquid remaining on the touch panel 110 according to whether the energy information of the touch information is in the energy intensity interval, that is, by comparing the energy difference.

It is worth mentioning that, in order to enable the touch detection to be effectively performed on the area of the touch panel 110 with liquid remaining, after the touch information is judged to meet the threshold condition (ie, the interference event is determined to be liquid interference), the processing is performed. The unit 120 can further verify the detection result obtained through the disturbed touch area. Specifically, for the interference event caused by the liquid remaining on the touch panel 110, the energy intensity of the disturbed touch area is generally uniformly affected, that is, the disturbed touch The difference between the sensed energy intensities induced by the respective sensing points in the touch region may be less than a tolerance range. Therefore, in an embodiment, the processing unit 120 can filter the energy change caused by the interference event in the sensing signal obtained through the disturbed touch area, thereby removing the liquid interference and touching the touch panel 110. The impact of detection. In this way, even if a liquid interference event occurs, the touch device 100 of the embodiment of the present invention can perform touch detection in the disturbed touch area and correct the sensed image obtained through the disturbed touch area. The information is reported back to the operating system, and the subsequent processing actions can be determined by the operating system according to the currently executing application, thereby improving the operational convenience of the device.

For determining whether the interference event is a liquid residue, the processing unit 120 can further determine the energy change situation and the disturbed touch in some embodiments, in addition to determining whether the energy information of the touch information is outside the energy intensity interval. Factors such as the appearance of the area are touched to make the judgment result more accurate. The details of the embodiment of Fig. 3 will be described below.

FIG. 3 is a flow chart of a touch detection method according to an embodiment of the invention, and is applicable to the touch device 100 of FIG. 1 . The detailed steps of the method will be described below in conjunction with the various elements shown in FIG.

In step S310, the processing unit 120 processing unit 120 obtains touch information of the interference event through the touch panel 110. This step is similar to step S210 in the embodiment of FIG. 2, so please refer to the foregoing for details.

In step S320, the processing unit 120 may determine whether the touch information meets the threshold condition according to whether the energy information of the touch information is in the energy intensity interval. Similar to the foregoing embodiment, the energy intensity interval may be determined according to whether the touch panel 110 detects the first energy intensity and the second energy intensity respectively corresponding to the touch events performed on the touch panel 110. Here, the first energy intensity is generated when the touch panel 110 does not detect a touch event, and the second energy intensity is generated when the touch panel 110 detects a touch event, for example, the processing unit 120 may compare, for example. Whether the energy information of the touch information is greater than the first energy intensity and less than the second energy intensity, and when the above-mentioned determination condition is met, determining that the touch information meets the threshold condition.

FIG. 4 illustrates an example of the touch panel 410 detecting the interference event detected by the touch panel 410 and detecting the user's finger being executed on the touch panel according to an embodiment of the invention. The touch area 414 sensed by the touch event on 410. In addition, FIG. 4 further illustrates the energy intensity induced by the plurality of sensing points in the disturbed touch area 412 and the touch area 414, wherein the energy intensity in the touch area 414 is greater than the interfered touch. The energy intensity in the area 412 is touched. On the other hand, the energy intensity corresponding to the touch panel 410 not detecting the touch event is from background noise, for example, 5 or other smaller values. Therefore, in the example of FIG. 4, for example, the energy intensity (for example, 5) corresponding to the non-detection of the touch event can be set as the first energy intensity, and the average value of the energy intensity in the touch region 414 can be set. It is the second energy intensity, thereby determining the energy intensity interval as a threshold condition. If the energy information of the interference event is the average value of the energy intensity in the disturbed touch area 412, the energy information of the interfered touch area 412 can be determined to be in the energy intensity interval based on the above setting, that is, the threshold is met. condition.

In other embodiments, the first energy intensity may also be used to determine Whether the sensing signal generated by the touch panel 110 is a noise threshold of the noise, and the second energy intensity may be used to determine whether the sensing signal generated by the touch panel 110 is a detected touch event. The effective signal threshold. In other words, the application of the present embodiment can adaptively adjust the setting of the first and second energy intensities according to the design requirements thereof, which is not limited by the present invention.

On the other hand, when it is determined that the touch information is not within the energy intensity interval, the process proceeds to step S360, and the processing unit 120 may perform a general touch detection method, and for example, determine that the interference event is an invalid touch, and then directly filter The touch information of the interference event is then returned to step S310 to re-detect the interference event.

The process of FIG. 3 is continued. In step 5330, the processing unit 120 determines whether the touch information meets the threshold condition according to whether the area information of the interfered touch area is greater than the preset area information. Specifically, in an embodiment, the threshold condition may further include preset area information, and the preset area information is, for example, an area corresponding to the fingertip of the finger, or may be corresponding to each touch of the touch panel 110. The size of the point (for example, Touch Sensing Pad). For example, in the embodiment, the processing unit 120 can set the preset area information to a circle having a diameter of 5 mm. The above numerical values are merely examples, and the present invention is not limited thereto.

It is worth mentioning that due to the physical properties of the liquid, when it remains on the touch panel 110, a circular or elliptical shape is generally formed, and the induced disturbed touch area is correspondingly It is circular or elliptical (for example, the disturbed touch area 412 in FIG. 4 is elliptical). In contrast, the touch operation of the touch panel 110 by the user may induce an irregular shaped sensing area (for example, the touch of FIG. 4 Touch area 414). Therefore, in an embodiment, the processing unit 120 can also determine whether the touch information of the interference event meets the threshold condition by determining whether the appearance of the interfered touch area is circular or elliptical.

After determining that the area information is greater than the preset area information, in step S340, the processing unit 120 may determine whether the difference between the plurality of sensing energy levels in the interfered touch area is less than a allowable range. Meet the threshold conditions. In an embodiment, the energy information may include the sensing energy intensity described above, and the sensing energy intensity is obtained by sensing, for example, a plurality of sensing points in the disturbed touch area. Similar to the foregoing, since the liquid is generally a characteristic of the conductor, when the liquid remains on the touch panel 110, the energy intensity of the disturbed touched area induced by the liquid should be uniformly increased (for example, in the example of FIG. 4, The plurality of sensed energy intensities in the disturbed touch area 412 are close to each other and are nearly identical). In contrast, the user's touch operation on the touch panel 110 may induce an irregular energy change (eg, the touch area 414 in FIG. 4). Therefore, in an embodiment, the processing unit 120 can determine that the energy intensity in the interfered touch region is uniform by determining that the difference between the plurality of sensed energy in the interfered touch region is less than the allowable range. The change, so as to determine the touch information of the interference event meets the threshold condition.

It should be noted that in the embodiment of FIG. 3, the order of steps S320, S330, and S340 can be adaptively adjusted, and the present invention does not limit the flow of various steps for discriminating interference events. For example, in another embodiment, the processing unit 120 may first determine whether the energy information of the interfered touch region is caused by the energy intensity interval and whether the energy intensity in the interfered touch region is uniformly changed. (That is, the determination operation of steps S320 and S340), and then it is judged whether or not the area information meets the threshold condition (i.e., the determination operation of step S330).

After determining that the touch information meets the threshold condition, the process proceeds to step S350, and the processing unit 120 compares the energy information of the interfered touch area and the first energy intensity corresponding to when the touch panel does not detect the touch event. The difference between the two is to adjust the intensity of the sensed energy in the disturbed touch area for touch detection. This step can be similar to the description of the foregoing embodiment, that is, the processing unit 120 can eliminate the influence of liquid interference in the sensing signal obtained through the disturbed touch area, so that the touch device 100 is caused by liquid residue. Interference events can still perform touch detection in the affected touch area and correspondingly determine subsequent processing actions.

Referring to the example of FIG. 4 again, if the average value of the plurality of sensing energy in the disturbed touch area 412 is 50, and the first energy intensity corresponding to the touch event is not detected, The processing unit 120 can adjust the energy intensity of the disturbed touch area 412 to 5, for example, to match the first energy intensity corresponding to the other areas of the touch panel 110 when no touch event is detected. Through the above processing, the interference of the liquid residue on the touch detection can be eliminated, so that the disturbed touch area can effectively provide the user with the touch operation.

On the other hand, if it is determined in step S320, S330, and S340 of FIG. 3 that the touch information of the interference event does not meet the threshold condition, the processing unit 120 can perform, for example, a general touch detection method, or for example, determine the The interference event is an invalid touch, and the touch information of the interference event is directly filtered, and then the process returns to step S310 to re-detect the interference event.

In summary, the touch device and the touch detection method thereof according to the embodiments of the present invention determine whether the touch information of the interference event is within the energy intensity interval detected by the touch panel, and considers Factors such as the energy change and the appearance of the disturbed touch area, thereby determining that the interference event is caused by the interference caused by the liquid residue, thereby setting the disturbed touch area induced by the interference event as the effective operation area, and further The ground is verified by the disturbed touch area, so that the touched area can be touch-detected. In this way, the embodiment of the present invention can improve the problem that the touch operation cannot be performed due to liquid interference, thereby improving the accuracy of determining the false touch behavior and making the touch device more convenient in use.

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

S210~S230‧‧‧Steps

Claims (10)

A touch detection method includes: obtaining a touch information of an interference event through a touch panel; and determining that the touch event is induced on the touch panel when determining that the touch information meets a threshold condition An interference touch area is an effective operation area for performing touch detection in the interfered touch area according to the touch information, wherein the threshold condition is determined according to an energy intensity interval detected by the touch panel. The touch detection method of claim 1, wherein the energy intensity interval is based on whether the touch panel detects a first energy corresponding to a touch event performed on the touch panel. Determining the intensity and a second energy intensity, and determining that the touch information meets the threshold condition comprises: determining whether the touch information meets the energy information according to whether the energy information of the touch information is in the energy intensity interval Threshold conditions. The touch detection method of claim 2, wherein the energy information comprises a plurality of sensing energy intensities respectively induced by the plurality of sensing points in the disturbed touch area, and determining the touch The step of controlling whether the information meets the threshold condition further comprises: comparing whether the difference between the sensed energy intensities is less than a allowable range, to determine that the touch information meets the threshold condition. The touch detection method of claim 3, wherein the step of performing touch detection in the interfered touch area according to the touch information comprises: Comparing the energy information of the interfered touch area with the difference between the first energy intensity corresponding to the touch panel when the touch event is not detected, to adjust the These sense the energy intensity for touch detection. The touch detection method of claim 1, wherein the threshold condition is further determined according to a preset area information, and the step of determining whether the touch information meets the threshold condition comprises: comparing the interfered condition Whether an area information of the touch area is greater than the preset area information to determine that the touch information meets the threshold condition. A touch device includes: a touch panel; and a processing unit coupled to the touch panel, obtains a touch information of an interference event through the touch panel, and determines that the touch information meets a threshold condition Determining, by the interference event, an interfered touch area sensed on the touch panel is an effective operation area, and performing touch detection in the interfered touch area according to the touch information, wherein the threshold condition It is determined according to an energy intensity interval detected by the touch panel. The touch device of claim 6, wherein the energy intensity interval is based on whether the touch panel detects a first energy intensity corresponding to a touch event performed on the touch panel. A second energy intensity is determined, and the processing unit determines whether the touch information meets the threshold condition according to whether an energy information comparing the touch information is in the energy intensity interval. The touch device of claim 7, wherein the energy information Include a plurality of sensing energy intensities respectively detected by the plurality of sensing points in the disturbed touch area, and the processing unit further compares whether the difference between the measured energy intensities is less than a allowable range, It is determined that the touch information meets the threshold condition. The touch device of claim 8, wherein the processing unit compares the energy information of the interfered touch area with the first corresponding to when the touch panel does not detect the touch event The difference between the energy intensities to adjust the sensed energy in the disturbed touch area for touch detection. The touch device of claim 6, wherein the threshold condition is further determined according to a preset area information, and the processing unit compares whether an area information of the interfered touch area is greater than the preset area. Information to determine that the touch information meets the threshold conditions.