TWM517857U - Electronic device for adjusting touch report - Google Patents

Abstract

A electronic device is provided. The device includes a processing circuit unit, a touch display unit, a detecting circuit unit and an adjusting circuit unit. The touch display unit generates a touch signal in response to a touch control operation of a stylus. The detecting circuit unit generates a touch report (point) according to the touch signal. Furthermore, the detecting circuit unit determines whether a palm rejection signal exists simultaneously with the touch signal. The detecting circuit unit identifies a pattern of the touch control operation according to the touch signal and the palm rejection signal if the signals exist simultaneously such that the adjusting circuit computes a report offset according to the pattern of the touch control operation. The detecting circuit unit adjusts the report signal according to the report offset, and sends adjusted report signal to the touch display unit. The touch display unit displays the touch report (point) according to the report signal.

Description

Adjusting touch reporting electronic device

The present invention relates to an electronic device, and more particularly to an electronic device for adjusting touch reporting.

With the development of the mobile electronic device industry, in order to achieve more convenient, lighter and more intuitive operations, the touch display unit as the input and output interface of the device has become the mainstream of electronic devices. Such electronic devices having a touch display unit include, for example, a mobile phone, a tablet computer, an electronic drawing board, a notebook computer, and the like.

In general, in the touch operation of the touch display unit, the finger and the stylus (Stylus) are the tools most commonly used by the user for the touch operation. However, since the stylus can produce relatively fine and accurate strokes, more and more users have begun to use the stylus to replace the handwriting input function in recent years. When the user performs a touch operation using the stylus, the touch report/point generated and displayed on the screen is often not the user because of the hand gesture, visual obscuration, and discriminant error. The expected touch point. For example, when a user draws a handwriting input on a tablet using a stylus, the user is often placed on the tablet and the stylus is held at an oblique angle. However, this behavior may cause the human eye to be unable to see or incorrectly determine the actual touch position of the stylus, and the touch report point is not the position where the user wants to perform the touch operation, thereby causing the touch operation. Not convenient.

In view of this, the novel creation provides an electronic device for adjusting the touch report point, which can adjust the position of the report according to the manner of the touch operation performed by the user, thereby optimizing the user experience.

The novel creation provides an electronic device suitable for interacting with a stylus. The electronic device includes a processing circuit unit, a touch display unit, a detecting circuit unit, and an adjusting circuit unit. The touch display unit is coupled to the processing circuit unit and is responsive to a touch operation of the stylus to generate a touch signal. The detecting circuit unit is coupled to the touch display unit and the processing circuit unit, and generates a report signal according to the touch signal. The adjustment circuit unit is coupled to the detection circuit unit. The detecting circuit unit determines whether the touch signal and the palm filtering signal corresponding to the touch operation are simultaneously present. If the touch signal corresponding to the touch operation and the palm filter signal are simultaneously present, the detecting circuit unit identifies the touch operation according to the touch signal and the palm filter signal. . The adjustment circuit unit calculates a report offset value according to the aspect of the touch operation. In addition, the detecting circuit unit adjusts the report signal according to the report offset value, and transmits the adjusted report signal to the touch display unit. And the touch display unit displays the touch report point according to the report signal.

Based on the above, the electronic device for adjusting the touch report provided by the novel creation can adjust the touch report according to the state of the touch operation, the use angle of the stylus, and the predetermined value of the touch display unit of the corresponding electronic device. Points, in order to achieve more accurate touch reporting, and improve user productivity.

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

1 is a schematic block diagram of an electronic device according to an embodiment of the present invention. Referring to FIG. 1 , in the embodiment, the electronic device 100 includes a processing circuit unit 110 , a touch display unit 120 , a detecting circuit unit 130 , and an adjusting circuit unit 140 . It should be noted that in the embodiment, the electronic device 100 is a tablet computer, but the novel creation is not limited thereto. For example, in another embodiment, the electronic device 100 is a touch-control tablet capable of displaying images, or other electronic devices (eg, smart phones, etc.) including input and output devices having both touch and display functions.

The processing circuit unit 110 is a hardware (for example, a chipset, a processor, etc.) having computing power for controlling the overall operation of the electronic device 100. In the present exemplary embodiment, the processing circuit unit 110 is, for example, a central processing unit (CPU), a microprocessor (micro-processor), or other programmable processing unit (Microprocessor), digital signal processing. Digital Signal Processor (DSP), programmable controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD) or other similar devices.

The touch display unit 120 is coupled to the processing circuit unit 110 and is responsive to a touch operation of the stylus to generate a touch signal. The touch display unit 120 is coupled to the processor unit 220 and is used to display content played by the electronic device 100. At the same time, the touch display unit 120 is also a touch input device. For example, the touch display unit 120 can be a Liquid Crystal Display (LCD), a Light-Emitting Diode (LED) display, a Field Emission Display (FED) display module, and a resistive type. A touch screen composed of a touch panel such as a resistive, capacitive or optical lens, which can simultaneously provide display and touch operation functions.

The detecting circuit unit 130 is coupled to the touch control display unit 120 and the processing circuit unit 110, and generates a report signal according to the touch signal. The generated report signal will be transmitted to the touch display unit 120 to display the touch report point.

In detail, when the user performs a touch operation on the electronic device 100 by using the stylus on the touch display unit 120, the touch display unit 120 detects the touch of the stylus through the touch sensing component. The corresponding touch signal is generated and transmitted to the detecting circuit unit 130. At this time, the detecting circuit unit 130 can convert the touch signal into a report signal including information indicating the two-dimensional coordinate of the X-axis coordinate and the Y-axis coordinate, and the two-dimensional coordinate is the touch report corresponding to the report signal. The coordinates of the point. After receiving the report signal from the detection circuit unit 130, the touch display unit 120 displays the touch report point according to the coordinate information in the report signal.

It is worth mentioning that the touch report point is used to indicate the user's operation point corresponding to the current touch operation, so that the user can clearly know the touch position of the current stylus and the touch display unit 120. In other words, the user can know which position on the screen the current touch operation is performed by the touch report point displayed on the screen of the touch display unit 120.

The adjustment circuit unit 140 is coupled to the detection circuit unit 130 and configured to calculate the report offset value according to the aspect of the touch operation. The detection circuit unit further adjusts the generated report signal according to the calculated report offset value, so that the touch display unit 120 can display the adjusted touch report point. The following is a detailed description of the novel touch adjustment reporting electronic device created in conjunction with FIG. 2 .

FIG. 2 is a flow chart showing the operation of adjusting the touch reporting electronic device according to an embodiment of the present invention.

Referring to FIG. 1 and FIG. 2 simultaneously, in step S201, the touch display unit 120 responds to the touch operation of the stylus to generate a touch signal. In addition, the touch display unit 120 also transmits the generated touch signal to the detecting circuit unit, so that the detecting circuit unit 130 can recognize the touch area and position corresponding to the current touch operation. However, in another embodiment, the detecting circuit unit 130 can also know the touch force of the current touch operation according to the touch signal. In step S203, the detecting circuit unit 130 generates a report signal according to the touch signal.

In step S205, the detecting circuit unit 130 determines whether there is a touch signal and a palm rejection signal corresponding to the touch operation.

FIG. 3 is a schematic diagram of a touch operation according to an embodiment of the present invention. Please refer to FIG. 3 . For example, if the user is performing a touch operation, the position where the stylus touches (or presses) on the touch display unit is the touch point 310, and the user's palm is also touched. The display unit 120 is in contact. The area where the palm of the user is in contact with the touch display unit 120 is the contact area 320 (the oblique irregular area illustrated in FIG. 3 ). As described above, the detecting circuit unit 130 recognizes the active small touch point 310 and the contact area 320 according to the touch signal, and the detecting circuit unit 120 determines that the contact area 320 is the user's palm and the touch display unit. 120 areas of contact.

In order to avoid the (unnecessary) touch event caused by the user's palm touching the touch display unit 120. The detecting circuit unit 120 determines whether the area of the touch event (eg, the touch point 310 and the contact area 320) in the touch panel 110 is greater than a preset value. Specifically, if the area of the contact area is greater than a preset value, the detecting circuit unit 120 may determine a touch event (eg, the contact area 320) greater than the preset value as a palm rejection event, which indicates a corresponding The touch event may be a touch event generated by the user touching the touch display unit 120 with the palm of the hand, or a touch event generated by the user touching the touch display unit 120 by mistake. In the embodiment, when the detecting circuit unit 120 determines that a palm filtering event occurs, the detecting circuit unit 120 generates a palm filtering signal according to the contact area 320, and the palm filtering signal is used to indicate the current contact area 320. The touch event that occurred is negligible. In brief, the detection circuit unit 120 can filter the user's accidental touch event on the touch display unit 120 or ignore the touch of the user's palm on the touch display unit, thereby enabling the touch operation. It can be performed only by touching the touch point 310 on the touch display unit 120 according to the stylus.

Referring to FIG. 1 and FIG. 2 again, in the embodiment, in step S205, the detecting circuit unit 130 determines whether there is a touch signal and a palm filtering signal corresponding to the touch operation. In brief, in this embodiment, when the palm filtering signal is generated, the detecting circuit unit 130 also determines the position of the user's palm on the touch display unit according to the palm filtering signal. Therefore, the detecting circuit unit 130 continuously determines whether there is a touch signal and a palm filtering signal corresponding to the touch operation at the same time to determine whether the stylus and the palm are in contact with the touch display unit.

If the detecting circuit unit 130 determines that there is no touch signal and palm filtering signal corresponding to the touch operation at the same time, the step S211 is continued from the step S211, and the detecting circuit unit 130 maintains the original generated signal. The original report signal is transmitted to the touch display unit 120, so that the touch display unit 120 displays the touch report point (also referred to as the original touch signal) according to the original report signal.

If the detecting circuit unit 130 determines that there is a touch signal and a palm filtering signal corresponding to the touch operation, the step S207 is followed by the step S207, and the detecting circuit unit 130 identifies the touch signal and the palm filtering signal. The aspect of touch operation.

Specifically, the detecting circuit unit 130 determines the relative position of the contact area corresponding to the touch signal of the stylus and the contact area of the corresponding palm filtering signal (eg, the contact area of the palm and the touch display unit 120). The aspect of the touch operation is a right-handed or left-handed aspect. In brief, the detecting circuit unit 130 determines whether the user uses the left hand (ie, the left hand state) or the right hand to perform the touch operation according to the position of the touch point of the stylus and the position of the contact area of the palm. .

For example, referring to FIG. 3 , as shown in FIG. 3 , the contact area 320 is on the right side of the touch point 310 of the corresponding stylus. In general, since the relative position of the touch point 310 and the contact area 320 occurs in a touch operation using the right hand (ie, the right hand state). Therefore, when the detecting circuit unit 130 determines the touch point 310 of the corresponding stylus according to the contact position of the touch signal corresponding to the stylus and the contact area of the corresponding palm filtering signal, the touch point 310 of the corresponding stylus is in the contact area corresponding to the palm filtering signal. When the left side of 320 is 320, the detecting circuit unit 130 determines that the current user is using the right hand to perform a touch operation (ie, the touch operation is a right-hand aspect).

In contrast, in another embodiment, when the detecting circuit unit 130 determines the touch point of the corresponding stylus according to the coordinate position of the touch signal corresponding to the stylus and the contact area of the corresponding palm filtering signal. When the right side of the contact area corresponding to the palm filtering signal is received, the detecting circuit unit 130 determines that the current user is using the left hand to perform the touch operation (ie, the touch operation is a left-handed state).

In addition, in the embodiment, the detecting circuit unit 130 determines whether the touch operation is in the right-hand or left-hand manner according to the moving direction of the touch signal and the palm filtering signal. Specifically, the position of the palm of the stylus on the touch display unit 120 tends to change with the moving direction of the stylus during the touch operation. Therefore, in addition to determining the position of the touch operation by determining the relative position of the contact area 320 and the touch point 310 of the corresponding stylus, the detection circuit unit 130 can also filter the signal by the touch signal and the palm. The direction of movement is used to assist in determining the aspect of the touch operation.

It should be noted that, in this embodiment, the aspect of the touch operation is divided into a left-handed state and a right-handed state, but the novel creation is not limited thereto. For example, in another embodiment, the aspect of the touch operation may be identified as other suitable aspects according to the relative position between the touch point of the corresponding stylus and the contact area of the corresponding palm filter signal. .

Referring to FIG. 1 and FIG. 2 again, in step S209, the adjustment circuit unit 140 calculates the report offset value according to the aspect of the touch operation, and the detection circuit unit 130 adjusts the report point according to the report offset value. Signal.

Specifically, after the detecting circuit unit 130 determines the aspect of the touch operation, the adjusting circuit unit 140 calculates the absolute value of the report offset value, and according to The same touch operation mode determines to adjust (or move) the position of the original generated touch report point. It is worth mentioning that the touch report point before adjustment is the original touch report point (also the touch point where the stylus actually touches the touch display unit), and the report signal before the adjustment is original. Report signal. In addition, the adjusted touch report point is also the adjusted touch report point, and the adjusted report signal is the adjusted report signal. The operation of step S209 will be described in detail below with reference to FIG.

FIG. 4 is a schematic diagram of adjusting a touch report point according to an embodiment of the present invention. Please refer to FIG. 4. For convenience of description, FIG. 4 is a cross-sectional view of the touch display unit. For example, it is assumed that the user's right hand holds the stylus 410 to perform a touch operation on the touch display unit 120 (the right palm also contacts the touch display unit 120) and faces the touch display unit 120. The touch display unit 120 includes at least the touch panel 121 and the display module 122 , and the width between the upper surface of the touch panel 121 and the upper surface of the display module 122 is a distance TP1 . The position where the stylus 410 actually touches the touch panel 121 is a touch point 420 (also referred to as an original touch report point). Further, it is assumed that the angle of use of the stylus is the angle θ _{1 in} FIG.

In the embodiment, in the operation of the adjustment circuit unit 140 to calculate the report offset value according to the aspect of the touch operation, the adjustment circuit unit 140 according to the aspect of the touch operation and the use angle of the stylus The report offset value is calculated corresponding to a predetermined value of the touch display unit.

Specifically, the predetermined value of the corresponding touch display unit 120 is the structural thickness of the touch display unit (eg, the distance TP1), wherein the adjustment circuit unit 140 also stores the structure thickness database, and the structural thickness database is Touch display list The model of the element 120 is used to obtain the value of the structural thickness of the touch display unit. However, the predetermined values in the creation of the present invention may also be other predetermined values. For example, in another embodiment, the manufacturer determines a suitable predetermined value according to different types of touch display units 120. For example, the manufacturer can calculate the predetermined value according to the thickness of the structure and the refractive index of the touch panel 121 / the display module 122 or other parameters related to the touch display unit 120.

In this embodiment, the angle of use of the stylus varies depending on the type of the stylus. For example, the types of stylus can be divided into active stylus (Active Stylus) and passive stylus (Passive Stylus). The following will describe each of the two different styluses.

In an embodiment, the stylus 410 is a passive stylus. The adjustment circuit unit 140 stores a preset use angle. The preset use angle may be preset according to the statistics of the general user holding the stylus. For example, the preset use angle is an angle of 30 degrees with respect to the normal of the touch display unit 120. The adjustment circuit unit 140 directly sets the preset use angle to the use angle of the stylus pen 410. In another embodiment, the stylus 410 is an active stylus with an angle sensor. The angle sensor can be, for example, a gyroscope, an accelerometer, a magnetometer, or a combination thereof to detect a user's angle of use of the stylus. In detail, the active stylus 410 further includes a processing unit and a transmission unit. When the stylus 410 detects the use angle, the use angle is transmitted to the electronic device 100 via a connection with the communication unit of the electronic device 100, and the use angle is transmitted to the adjustment circuit unit 140. It should be noted that the novel creation does not limit the way in which the connection is established and the electronic The type of communication unit of device 100.

In detail, the adjustment circuit unit 140 first multiplies the predetermined value by the product calculated using the tangent function value of the angle as the absolute value of the report offset value. In addition, the positive or negative of the report offset value is determined according to the determined aspect of the touch operation (here, the preset is positive with respect to the right side of the horizontal coordinate of FIG. 4, and the left side of the horizontal coordinate is negative). In this embodiment, if the touch operation is a right-hand aspect, the report offset value is a negative value. If the touch operation is a left-handed state, the report offset value is a positive value.

For example, referring to FIG. 4, it is assumed that the angle θ ₁ is 15 degrees (°), the distance TP1 is “1.4” millimeters (mm), and the coordinate value of the original touch report point is “X” (in millimeters). According to this, the adjustment circuit unit 140 multiplies the predetermined value by the tangent function value of the use angle (i.e., 1.4*tan15°), and the product calculated is about "0.375" millimeters (mm). This product "0.375" is the absolute value of the report offset value. If the detecting circuit unit 130 determines that the touch operation is the right-hand aspect in this example, the obtained report offset value is a negative value (ie, "-0.375"). Then, the detecting circuit unit 130 adjusts the original touch report point and the corresponding original report point signal according to the obtained report point offset value. That is, the detecting circuit unit 130 will use the coordinate value obtained by adding the coordinate value of the original touch report point "X" plus "-0.375" as the coordinate value of the adjusted touch report point, and generate a corresponding coordinate value of "X". The adjusted report signal of -0.375" is sent to the touch display unit 120. It should be noted that in another embodiment, the length unit of the report offset value corresponds to a unit of a predetermined value, and the unit can be changed as the manufacturer desires.

As can be seen from the above example, in this embodiment, the touch report point is adjusted from the position of the touch point 420 to the position of the adjusted touch report point 430 according to the aspect of the touch operation. In addition, the distance between the position of the touch point 420 and the position of the entire touch report point 430 is a report offset value.

It should be noted that in the above example, only the left/right hand state is used to distinguish the aspect of the touch operation, but the novel creation is not limited thereto. For example, in another embodiment, the aspect of the touch operation may have other aspects, and the detecting circuit unit 130 performs the adjustment of the touch report according to the other aspects. For example, in another embodiment, the detecting circuit unit 130 determines the direction of adding the report offset value according to the connection between the touch point of the stylus and the center of mass of the contact area of the palm. For example, it is assumed that the line between the touch point of the stylus and the center of mass of the contact area of the palm extends from the touch point to the upper right. Then, after the adjustment, the touch report point will be displayed at the position where the touch point is used as the starting point and the distance of the report offset value is extended to the lower left.

In summary, the electronic device for adjusting the touch report provided by the novel creation can adjust the touch according to the state of the touch operation, the use angle of the stylus and the predetermined value of the touch display unit of the corresponding electronic device. Control the reporting point to achieve more accurate touch reporting and improve user productivity.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the novel creation, and any person skilled in the art can make some changes without departing from the spirit and scope of the novel creation. Retouching, the scope of protection of this new creation is subject to the definition of the scope of the patent application attached.

100‧‧‧Electronic devices
110‧‧‧Processing circuit unit
120‧‧‧Touch display unit
130‧‧‧Detection circuit unit
140‧‧‧Adjustment circuit unit
S201, S203, S205, S207, S209, S211‧‧‧ Operation steps of the electronic device adjustment report
310‧‧‧ Touch point
320‧‧‧Contact area
410‧‧‧ stylus
420‧‧‧ touch point
430‧‧‧Adjusted touch report
121‧‧‧Touch panel
122‧‧‧Display module

1 is a schematic block diagram of an electronic device according to an embodiment of the present invention. FIG. 2 is a flow chart showing the operation of adjusting the touch reporting electronic device according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a touch operation according to an embodiment of the present invention. FIG. 4 is a schematic diagram of adjusting a touch report point according to an embodiment of the present invention.

S201, S203, S205, S207, S209, S211‧‧‧ Adjust the operation steps of the touch reporting electronic device

Claims (10)

An electronic device, which is adapted to interact with a stylus, comprising: a processing circuit unit; a touch display unit coupled to the processing circuit unit, responsive to a touch operation of the stylus to generate a touch signal a detection circuit unit coupled to the touch display unit and the processing circuit unit to generate a report signal according to the touch signal; and an adjustment circuit unit coupled to the detection circuit unit, wherein the detection circuit The unit determines whether the touch signal and the palm filter signal corresponding to the touch operation are simultaneously present, wherein if the touch signal corresponding to the touch operation and the palm filter signal are simultaneously present, the detecting circuit unit is configured according to the touch The signal and the palm filter signal identify an aspect of the touch operation, wherein the adjustment circuit unit calculates a report offset value according to the aspect of the touch operation, wherein the detection circuit unit is biased according to the report point And shifting the value to adjust the report signal, and transmitting the adjusted report signal to the touch display unit, wherein the touch display unit displays a touch according to the report signal Point. The electronic device of claim 1, wherein if the touch signal corresponding to the touch operation and the palm filter signal are not present at the same time, the detecting circuit unit maintains the generated report signal and transmits the signal Report the signal to the touch display unit. The electronic device according to claim 1, further comprising: The detecting circuit unit determines whether a palm is in contact with the touch display unit via the touch display unit, wherein the detecting circuit unit is in accordance with the palm and the touch display unit if the palm is in contact with the touch display unit A palm touch signal is generated in a contact area. The electronic device of claim 3, wherein the detecting circuit unit recognizes the aspect of the touch operation according to the touch signal and the palm filtering signal, the detecting circuit unit is configured according to Corresponding to a relative position of the touch signal of the stylus and the contact area corresponding to the palm filter signal, the aspect of the touch operation is determined to be a right-handed state or a left-handed state. The electronic device of claim 4, wherein the detecting circuit unit recognizes the aspect of the touch operation according to the touch signal and the palm filtering signal, the detecting circuit unit is configured according to The touch signal and the direction of movement of the palm filter signal determine whether the aspect of the touch operation is the right hand or the left hand. The electronic device of claim 1, wherein in the operation of the adjusting circuit unit to calculate the report offset value according to the aspect of the touch operation, the adjusting circuit unit is configured according to the touch operation. In this aspect, a use angle of the stylus and a predetermined value corresponding to the touch display unit are used to calculate the report offset value. The electronic device of claim 6, wherein the predetermined value corresponding to the touch display unit is a structural thickness of the touch display unit, wherein the adjustment circuit unit stores a structural thickness database, and The structural thickness database and a model of the touch display unit obtain the structural thickness of the touch display unit. The electronic device of claim 6, wherein the absolute value of the report offset value is a product obtained by multiplying the predetermined value by the tangent function value of the use angle. The electronic device of claim 6, wherein the stylus is a passive stylus, and the use angle of the stylus is a preset use angle. The electronic device of claim 6, wherein the stylus is an active stylus, and the electronic device further comprises a communication unit coupled to the processing circuit unit, wherein the stylus comprises a processing unit; an angle sensor coupled to the processing unit to detect the use angle; and a transmission unit coupled to the processing unit to transmit the usage angle to a connection between the communication unit and the communication unit The electronic device, wherein the communication unit transmits the use angle to the adjustment circuit unit.