CN111813257A - Touch processor, touch device, touch system and touch method - Google Patents

Abstract

The invention relates to a touch processor, a touch device, a touch system and a touch method. The touch control method comprises the following steps: sensing a first electric signal close to a touch device to generate a second electric signal, wherein the frequency of the first electric signal is a default frequency; detecting whether the frequency of the second electrical signal is the default frequency; detecting a function value of the second electrical signal when the frequency of the second electrical signal is the default frequency; and detecting the intensity of the second electrical signal according to the function value of the second electrical signal to judge whether a sender suspended on the touch device exists.

Description

Touch processor, touch device, touch system and touch method

The present application is a divisional application of the invention patent application with application number 201510278186.1 entitled "touch processor, touch device, touch system and touch method", the date of which is 2015, 05, month 27.

Technical Field

The present invention relates to touch devices, and more particularly to a touch processor, a touch device, a touch system and a touch method for determining proximity of an initiator.

Background

Touch panels or touch screens are important man-machine interfaces in modern times, and in addition to detecting proximity or contact (collectively referred to as proximity) of a human body, touch panels are also used to detect proximity of a pen-shaped object or a pen tip of a touch pen, so as to facilitate a user to control a touch trajectory of the pen tip more accurately.

The touch pen is mainly classified into two types, one is a non-active pen that does not emit a signal, and the corresponding touch panel/screen detects the non-active pen and the finger by using a capacitive, resistive, or other optical or acoustic mechanism. In another type of active pen, the corresponding touch panel/screen detects the electrical signal to find out the relative position of the active pen on the touch panel/screen and/or the state of the active pen. The mode of detecting the inactive pen/finger is different from the mode of detecting the electrical signal sent by the active pen, and how to know the proximity of the active pen to the touch panel/screen for corresponding detection is an important issue at present.

Disclosure of Invention

The present invention is directed to a novel touch processor, a touch device, a touch system and a touch method, which can detect that an active pen is close to a touch panel/screen as soon as possible for corresponding detection, and is very practical.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the present invention, a method for determining proximity of an initiator to a touch device comprises: sensing a first electric signal close to a touch device to generate a second electric signal; and detecting the intensity of the second electric signal to judge whether a sender suspended on the touch device exists.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

In an embodiment, when the intensity of the second electrical signal is greater than a first threshold value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the second electrical signal is greater than a second threshold value, it is determined that the transmitter touches the touch device, where the second threshold value is greater than the first threshold value.

The method further comprises:

detecting whether the frequency of the second electrical signal is a default frequency, wherein the intensity of the second electrical signal is detected when the frequency of the second electrical signal is the default frequency, wherein the communicator sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In another embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in different time periods.

In the method, when it is determined that the transmitter is suspended in the touch device, an area is set, where the area includes a suspended position of the transmitter, and the touch device outside the area performs mutual capacitance touch detection.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a part of the plurality of driving electrodes is detected to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a part of the plurality of sensing electrodes is detected to detect the intensity of the second electrical signal.

In the aforementioned method, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating, or when all or part of the plurality of sensing electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating.

The purpose of the invention and the technical problem to be solved are also realized by adopting the following technical scheme. According to the present invention, a method for determining proximity of an initiator to a touch device comprises: sensing a first electric signal close to a touch device to generate a second electric signal; detecting the intensity of a third electrical signal derived from the touch device to a proximity object to determine whether a transmitter suspended in the touch device exists, wherein the second electrical signal comprises the third electrical signal.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

In an embodiment, when the intensity of the third electrical signal is greater than a first threshold value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second threshold value, it is determined that the transmitter touches the touch device, where the second threshold value is greater than the first threshold value.

The method of the present invention, wherein detecting the intensity of the third electrical signal further comprises: detecting a function value of the second electrical signal and the third electrical signal to determine whether the transmitter is suspended on the touch device.

The method further comprises: detecting whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein the function value is detected when the frequency of the second electrical signal or the third electrical signal is the default frequency, wherein the communicator sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

The method further comprises: detecting whether the frequency of the third electrical signal is a default frequency, wherein the intensity of the third electrical signal is detected when the frequency of the third electrical signal is the default frequency, wherein the first electrical signal is emitted by the communicator, and the frequency of the first electrical signal is the default frequency.

In another embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in different time periods.

In the method, when it is determined that the transmitter is suspended in the touch device, an area is set, where the area includes a suspended position of the transmitter, and the touch device outside the area performs mutual capacitance touch detection.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a part of the plurality of driving electrodes is detected to detect the intensity of the third electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a part of the plurality of sensing electrodes is detected to detect the intensity of the third electrical signal.

In the aforementioned method, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating, or when all or part of the plurality of sensing electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating.

The purpose of the invention and the technical problem to be solved are also realized by adopting the following technical scheme. According to the present invention, a method for determining proximity of an initiator to a touch device comprises: sensing a first electric signal close to a touch device to generate a second electric signal; detecting the intensity of a third electrical signal derived from the touch device to a proximity object to determine whether a transmitter suspended in the touch device exists, wherein the second electrical signal comprises the third electrical signal.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the present invention, a touch device comprises: an electrode module for sensing a first electrical signal to generate a second electrical signal; and a control module for detecting the intensity of the second electrical signal to determine whether a transmitter is suspended on the touch device.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the second electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the second electrical signal is greater than a second critical value, it is determined that the transmitter touches the touch device, where the second critical value is greater than the first critical value.

In an embodiment, the control module detects whether the frequency of the second electrical signal is a default frequency, wherein when the frequency of the second electrical signal is the default frequency, the control module detects the intensity of the second electrical signal, wherein the transmitter transmits the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects a floating position of the transmitter on the plurality of driving electrodes and a floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

In an embodiment, when the transmitter is suspended in the touch device, the control module sets an area including a suspended position of the transmitter, wherein the area detects the transmitter, and the electrode modules outside the area detect mutual capacitance touch.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, the control module detects all or a portion of the plurality of driving electrodes to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, the control module detects all or a portion of the plurality of sensing electrodes to detect the intensity of the second electrical signal.

In an embodiment, when the control module detects all or part of the driving electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating, or when the control module detects all or part of the sensing electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the present invention, a touch device comprises: an electrode module that senses a first electrical signal to generate a second electrical signal, and a third electrical signal of the second electrical signal is derived via a proximity object; and a control module for detecting the intensity of the third electrical signal to determine whether a transmitter is suspended on the touch device.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the third electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second critical value, it is determined that the transmitter touches the touch device, where the second critical value is greater than the first critical value.

In an embodiment, the control module detects a function value of the second electrical signal and the third electrical signal to determine whether the transmitter is suspended in the touch device.

In an embodiment, the control module detects whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is the default frequency, the control module detects the function value, wherein the communicator sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects a floating position of the transmitter on the plurality of driving electrodes and a floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

In an embodiment, when the transmitter is suspended in the touch device, the control module sets an area including a suspended position of the transmitter, wherein the area detects the transmitter, and the electrode modules outside the area detect mutual capacitance touch.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, the control module detects all or a portion of the plurality of driving electrodes to detect the intensity of the third electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, the control module detects all or a portion of the plurality of sensing electrodes to detect the intensity of the third electrical signal.

In an embodiment, when the control module detects all or part of the driving electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating, or when the control module detects all or part of the sensing electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to a touch processor of the present invention, the method for determining the proximity of the transmitter to the touch device comprises: a device for detecting the intensity of a second electrical signal, wherein a touch device senses a first electrical signal to generate the second electrical signal; and judging whether a device suspending in a transmitter of the touch device exists or not according to the intensity of the second electric signal.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the second electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the second electrical signal is greater than a second critical value, it is determined that the transmitter touches the touch device, where the second critical value is greater than the first critical value.

The touch processor further comprises: means for detecting whether the frequency of the second electrical signal is a default frequency, wherein the intensity of the second electrical signal is detected when the frequency of the second electrical signal is the default frequency, wherein the transmitter transmits the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in different time periods.

In an embodiment, when the transmitter is suspended in the touch device, an area is set, where the area includes a suspended position of the transmitter, and the touch device outside the area performs mutual capacitance touch detection.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a part of the plurality of driving electrodes is detected to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a part of the plurality of sensing electrodes is detected to detect the intensity of the second electrical signal.

In the above touch processor, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating, or when all or part of the plurality of sensing electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to a touch processor of the present invention, the method for determining the proximity of the transmitter to the touch device comprises: means for detecting an intensity of a third electrical signal, wherein a touch device senses a first electrical signal to generate a second electrical signal, and the third electrical signal of the second electrical signal is derived from a touch device to a proximity object; and judging whether a device suspending in a transmitter of the touch device exists or not according to the intensity of the third electric signal.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the third electrical signal is greater than a first threshold value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second threshold value, it is determined that the transmitter touches the touch device, where the second threshold value is greater than the first threshold value.

The touch processor, wherein detecting the intensity of the third electrical signal further comprises: detecting a function value of the second electrical signal and the third electrical signal to determine whether the transmitter is suspended on the touch device.

The touch processor further comprises: means for detecting whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein the function value is detected when the frequency of the second electrical signal or the third electrical signal is the default frequency, wherein the transmitter transmits the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in different time periods.

In an embodiment, when the transmitter is suspended in the touch device, an area is set, where the area includes a suspended position of the transmitter, and the touch device outside the area performs mutual capacitance touch detection.

In an embodiment, the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a part of the plurality of driving electrodes is detected to detect the intensity of the third electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a part of the plurality of sensing electrodes is detected to detect the intensity of the third electrical signal.

In the above touch processor, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating, or when all or part of the plurality of sensing electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the present invention, a touch system includes a transmitter and a touch device. The transmitter transmits a first electrical signal. The touch device senses the first electrical signal to generate (absorb) a second electrical signal, and detects the intensity of the second electrical signal to determine whether the sender is suspended on the touch device.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the second electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the second electrical signal is greater than a second critical value, it is determined that the transmitter touches the touch device, where the second critical value is greater than the first critical value.

In an embodiment, the touch device detects whether the frequency of the second electrical signal is a default frequency, wherein when the frequency of the second electrical signal is the default frequency, the control module detects the intensity of the second electrical signal, and wherein the frequency of the first electrical signal is the default frequency.

In an embodiment of the present invention, the touch system further includes: an electrode module for sensing the first electrical signal to generate the second electrical signal; and a control module for detecting the intensity of the second electrical signal to determine whether the transmitter is suspended in the touch device.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects a floating position of the transmitter on the plurality of driving electrodes and a floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

In the touch system, when it is determined that the transmitter is suspended in the touch device, the control module sets an area including a suspended position of the transmitter, wherein the area performs detection of the transmitter, and the electrode modules outside the area perform mutual capacitance touch detection.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, the control module detects all or a portion of the plurality of driving electrodes to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, the control module detects all or a portion of the plurality of sensing electrodes to detect the intensity of the second electrical signal.

In an embodiment, when the control module detects all or part of the driving electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating, or when the control module detects all or part of the sensing electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating. The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the present invention, a touch system includes a transmitter and a touch device. The transmitter transmits a first electrical signal. The touch device senses the first electrical signal to generate (absorb) a second electrical signal, and a third electrical signal of the second electrical signal is derived through a proximity object, wherein the touch device detects the intensity of the third electrical signal to determine whether the sender floats on the touch device.

The object of the present invention and the solution to the technical problems can be further achieved by the following technical measures.

In an embodiment, when the intensity of the third electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second critical value, it is determined that the transmitter touches the touch device, where the second critical value is greater than the first critical value.

In an embodiment, the touch device detects a function value of the second electrical signal and the third electrical signal to determine whether the transmitter is suspended in the touch device. In an embodiment, the touch device detects whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is the default frequency, the control module detects the function value, and wherein the frequency of the first electrical signal is the default frequency.

In an embodiment of the present invention, the touch system further includes: an electrode module for sensing the first electrical signal to generate the second electrical signal; and a control module for detecting the intensity of the third electrical signal to determine whether the transmitter is suspended in the touch device.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects a floating position of the transmitter on the plurality of driving electrodes and a floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

In the touch system, when it is determined that the transmitter is suspended in the touch device, the control module sets an area including a suspended position of the transmitter, wherein the area performs detection of the transmitter, and the electrode modules outside the area perform mutual capacitance touch detection.

In an embodiment, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes, when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, the control module detects all or a portion of the plurality of driving electrodes to detect the intensity of the third electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, the control module detects all or a portion of the plurality of sensing electrodes to detect the intensity of the third electrical signal.

In an embodiment, when the control module detects all or part of the driving electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating, or when the control module detects all or part of the sensing electrodes, the control module sets the driving electrodes and the sensing electrodes that are not detected to be floating.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By the technical scheme, the touch processor, the touch device, the touch system and the touch method at least have the following advantages and beneficial effects: the touch control processor, the touch control device, the touch control system and the touch control method can know that the active pen approaches the touch control panel/screen as soon as possible to carry out corresponding detection.

In summary, the present invention relates to a touch processor, a touch device, a touch system and a touch method. The touch control processor detects the intensity of a third electric signal, wherein a touch control device senses a first electric signal to generate a second electric signal, and the third electric signal in the second electric signal is led out from the touch control device to a proximity object. And then, the touch control processor judges whether a transmitter suspended on the touch control device exists or not according to the intensity of the third signal. The invention has obvious progress and positive effect, and is a novel, advanced and practical new design.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a touch system according to an embodiment of the invention.

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

FIG. 3 is a diagram of a touch system according to an embodiment of the invention.

FIG. 4 is a diagram of a touch system according to an embodiment of the invention.

Fig. 5 is a schematic diagram of a touch device according to an embodiment of the invention.

Fig. 6 is a flowchart illustrating a touch method according to an embodiment of the invention.

Fig. 7 is a flowchart illustrating a touch method according to an embodiment of the invention.

Ip, Ih, It, Ig: current Cm: control module

Em: electrode module Ob: proximity object

S1: first electrical signal S2: second electrical signal

S3: third electric signal T: signal transmitter

Td: a touch device Ts: touch control system

Tx: drive electrode Rx: sensing electrode

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, methods, steps, features and effects of the touch processor, the touch device, the touch system and the touch method according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Fig. 1 is a schematic view of a touch system according to an embodiment of the invention. In fig. 1, the active pen is hovering above the touch panel/screen. The control module of the touch panel/screen can detect the electric signal emitted by the active pen, so as to know the floating position of the active pen.

In one embodiment, the electrical signal generated by the active pen is connected to the ground through the touch panel/screen, and then connected to a human body or other objects holding the active pen through the ground, thereby forming an electrical circuit. Due to the formation of the electrical loop, the control module can detect a weak current through the electrodes of the touch panel/screen. In other words, the current of the electrical loop includes the current Ip, the current Ig, and the current It of fig. 1. As shown in fig. 1, the active pen outputs a current Ip to the touch panel/screen, and is connected to the ground GND through the touch panel/screen, and then transmits a current Ig from the ground GND to the hand holding the active pen, i.e., the human body, and returns a current It to the active pen through the hand holding the active pen.

In another embodiment, in addition to the above-mentioned electric circuit, the electric signal sent by the active pen may form another electric circuit by touching or suspending a human body or other objects on the touch panel and then by the human body or other objects holding the active pen. The current of the circuit includes the current Ip, the current Ih, and the current It of fig. 2. As shown in fig. 2, the active pen outputs a current Ip to the touch panel/screen, and the touch panel/screen transmits a current Ih to the hand holding the active pen, and returns a current It to the active pen via the hand holding the active pen.

In yet another embodiment, both forms of electrical circuit are present simultaneously. As shown in fig. 3, the circuit includes the circuit formed by the current Ip, the current Ig, and the current It, and the circuit formed by the current Ip, the current Ih, and the current It.

It should be noted that the human body part shown in fig. 1 to 3 may be a hand holding the active pen, or may be another part of the human body. For example, the user holds the touch panel/screen with the left hand and holds the active pen with the right hand. The electrical circuit of fig. 2 is sent from the active pen, through the touch panel/screen to the left hand, then through the human body to the right hand, and finally back to the active pen.

It should be noted that the right hand holding the active pen may contact the touch panel/screen, or may be suspended above the touch panel/screen like the active pen, or may be close to the touch panel/screen and generate an electromagnetic induction effect with the touch panel/screen.

In one embodiment, the touch panel/screen may include several types of electrodes, such as driving electrodes (Tx), sensing electrodes (Rx), dummy electrodes (dummy), and the like. The driving electrodes and the sensing electrodes may be a plurality of parallel electrodes, respectively, but the driving electrodes and the sensing electrodes are orthogonal to each other. The number, form, and shape of the various electrodes are not limited in the present invention.

In the present invention, the driving electrodes Tx and the sensing electrodes Rx refer to that when the touch panel/screen is in a detection mode of mutual capacitance, at least one driving electrode Tx sends a driving signal, and simultaneously detects an electrical change of an external conductive object on the sensing electrodes Rx. The driving electrode Tx can also be called a first electrode, and the sensing electrode Rx can be called a second electrode, and the two electrodes can also exchange roles.

In one example, the area occupied by the drive electrodes and the sense electrodes is different. In one embodiment, the drive electrodes occupy a larger area than the sense electrodes. In another embodiment, the drive electrodes occupy a smaller area than the sense electrodes.

In one example, the control module may be connected to both the drive electrodes and the sense electrodes. In another example, the control module may be time-shared with the drive electrodes and the sense electrodes. In other words, there may be a multiplexer circuit or connection network between the drive electrodes and the sense electrodes and the control module. In one example, the control module may be implemented on a single chip or multiple chips. The invention is not limited to the implementation of the control module.

In one embodiment, the control module comprises at least one detecting module, for connecting the driving electrode Tx and/or the sensing electrode Rx of the touch panel/screen, and detecting the electrical signal emitted by the active pen. In other words, the current Ip shown in fig. 1 to 3 is detected.

In one example, the detection module may connect the driving electrode Tx and the sensing electrode Rx to detect the position of the active pen in two axial directions simultaneously. In another example, the detection module may connect the driving electrode Tx and the sensing electrode Rx in a time-sharing manner, and detect the position of the active pen in two axial directions in a time-sharing manner.

In other words, when the detection module detects the proximity position of the active pen on the touch panel/screen, two coordinate parameters (e.g., X and Y) in two-dimensional coordinates of the active pen on the touch panel/screen may be obtained simultaneously, or two coordinate parameters in two-dimensional coordinates of the active pen on the touch panel/screen may be obtained sequentially, for example, the X coordinate is obtained first and then the Y coordinate is obtained, or vice versa.

When the control module is in the electric signal detection mode of the active pen, and the detection module is connected to the driving electrode Tx, the sensing electrode Rx or other electrodes not connected to the detection module can be set to be floating, i.e. not grounded. Therefore, the current Ip is concentrated on the driving electrode Tx, so that the detection module can detect the current more easily. On the contrary, when the detecting module is connected to the sensing electrode Rx, the driving electrode Tx or other electrodes not connected to the detecting module can be set to be floating, i.e. not grounded. Therefore, the current Ip is concentrated on the sensing electrode Rx, so that the detection module can detect more easily. Broadly speaking, when the detection module is connected to some electrodes, other electrodes may be set to float.

It is noted that the above-mentioned method can be used to detect the current Ip, and can also be used to detect the current Ih. In other words, in the electrical signal detection mode, the control module can detect the electrical change caused by the Ip current and/or the Ih current. The electrical change may be a current value, an absolute value of a current value, a charge transfer amount, a voltage value, a voltage difference value, or the like. In one embodiment, the control module may measure the reference value before performing the electrical signal detection mode. The electrical variation may be a variation based on the reference value.

One of the primary objectives of the present invention is to improve the detection capability of the active pen floating above the touch panel/screen. The control module according to the invention can detect the active pen further above the touch panel/screen without increasing the power of the electrical signal by the active pen. The control module may detect the active pen at the same location above the touch panel/screen to reduce power consumption of the active pen when the active pen reduces power of the electrical signal.

In one embodiment, when the control module detects that the Ip current value is greater than a certain threshold value, or the absolute value of the difference between the Ip current value and the reference value is greater than a certain threshold value, it can be determined that the active pen is hovering above the touch panel/screen. In another embodiment, when the control module detects that the Ih current value is greater than a certain threshold value, or the absolute value of the difference between the Ih current value and the reference value is greater than a certain threshold value, it may be determined that the active pen is hovering over the touch panel/screen.

In some embodiments, when the control module detects that a function value of the Ip and Ih current values is greater than a threshold, it can be determined that the active pen is hovering over the touch panel/screen. For example, the function value may be related to the sum of the absolute value of the Ip current value and the absolute value of the Ih current value, or may be related to the difference between the absolute value of the Ip current value and the absolute value of the Ih current value. In some examples, the function value may be related to an absolute value of a difference between the Ip current value and the reference value, and an absolute value of a difference between the Ih current value and the reference value, such as a sum of the Ip current value and the reference value, or a difference between the Ip current value and the reference value.

In addition, the function value can be related to the charge transfer amount of the Ip current and the Ih current.

In one embodiment, if the control module only needs to detect whether the active pen is floating above the touch panel/screen, and does not need to detect the floating projection position of the active pen, the detection module of the control module only needs to be connected to one of the driving electrode Tx or the sensing electrode Rx. As described above, when the coverage area of one electrode is larger, the control module may be preferentially connected to the electrode with the larger area, for example, the driving electrode Tx.

Generally, when the active pen is detected, whether the active pen has touched the touch panel/screen or merely hovers over the touch panel/screen. The control module ignores objects that touch the touch panel/screen, which may be the palm of the hand holding the active pen, the hand holding the touch panel/screen, or other objects.

Since the detection mode of the active pen electrical signal is different from the capacitive detection mode, in one embodiment, when the control module detects that the active pen is in contact with or suspended above the touch panel/screen, the capacitive detection may be stopped.

In another embodiment, the control module may continue the capacitive detection, but may omit the region where the current Ip and/or the current Ih are detected. In other words, the area where the current Ip and/or the current Ih are detected is the area where the active pen and/or the hand contact or float on the touch panel/screen, so that the mutual capacitance detection in such area is not needed or is ignored.

In one embodiment, the control module may comprise a multiplexer circuit or a connection network, and the detection module is connected to only the driving electrode Tx or the first electrode when detecting the electrical signal of the active pen. When the mutual capacitance detection is performed, the detection module is only connected to the sensing electrode Rx or the second electrode.

In view of the foregoing, the present invention provides a touch device for detecting whether a transmitter is suspended on the touch device. Referring to fig. 4, when a transmitter T approaches the touch device Td and emits a first electrical signal S1, the touch device Td senses the first electrical signal S1 to generate a second electrical signal S2. The transmitter T may be the active pen, and the touch device Td may be the touch panel/screen. When the first electrical signal S1 is the aforementioned current Ip, the second electrical signal S2 is a current generated by the induction current Ip, such as a displacement current. Then, the touch device Td detects the intensity of the second electrical signal S2 to determine whether the transmitter T is suspended on the touch device Td.

The touch device Td can determine that the transmitter T touches or floats on the touch device Td by a first threshold and a second threshold. The first threshold is a threshold for detecting a floating object, and the second threshold is a threshold for detecting a touch object. Therefore, the second threshold is greater than the first threshold. When the touch device Td detects that the intensity of the second electrical signal S2 is greater than the first threshold value, it is determined that the transmitter T is suspended in the touch device Td. At this time, the touch device Td may further detect whether the second electrical signal S2 is smaller than the second threshold. When the touch device Td detects that the intensity of the second electrical signal S2 is smaller than the second threshold, it is determined that the transmitter T is suspended in the touch device Td. When the touch device Td detects that the intensity of the second electrical signal S2 is greater than the second threshold value, it is determined that the transmitter T touches the touch device Td.

Furthermore, the first electrical signal S1 generated by the transmitter T includes a default frequency, which may be a single frequency or a mixture of multiple frequencies. Accordingly, the frequency of the second electrical signal S2 generated by sensing the first electrical signal S1 should also be a default frequency. Therefore, the touch device Td may detect the frequency of the second electrical signal S2 before detecting the intensity of the second electrical signal S2 to determine whether the transmitter close to the touch device Td is the transmitter T corresponding to the touch device Td. When the touch device Td detects that the frequency of the second electrical signal S2 is the default frequency, it is determined that the transmitter T corresponding to the touch device Td exists. At this time, the touch device Td may further detect the intensity of the second electrical signal S2 to determine that the transmitter T touches or floats on the touch device Td. If the touch device Td detects that the frequency of the second electrical signal S2 is not the default frequency, it is determined that there is no transmitter T corresponding to the touch device Td, and the subsequent electrical signal strength detection is not required to be performed.

Of course, the touch device Td may detect the intensity of the second electrical signal S2 and then detect the frequency of the second electrical signal S2 to determine whether the transmitter suspended in the touch device Td is the predetermined transmitter T.

Referring to fig. 4, when a proximity object Ob coupled with the transmitter T approaches the touch device Td, a third electrical signal S3 of the second electrical signals S2 is conducted to the proximity object Ob. The proximity object Ob may be one hand holding the transmitter T or the other hand holding the touch device Td. The third electrical signal S2 may be part or all of the second electrical signal S2. For example, when the touch device Td is in the electrical signal detection mode of the transmitter T and other electrodes not connected to the detection module are floating, i.e. not grounded, the second electrical signal S2 is conducted to the proximity object Ob, i.e. the third electrical signal S3 is the second electrical signal S2. On the contrary, when the touch device Td is in the electrical signal detection mode of the transmitter T and the other electrodes not connected to the detection module are all grounded, the third electrical signal S3 is a portion of the second electrical signal S2, and another portion of the second electrical signal S2 includes an electrical signal conducted to ground, such as the current Ig. Therefore, the touch device Td can also detect the intensity of the third electrical signal S3 to determine whether the transmitter T is suspended on the touch device Td.

Accordingly, the present invention provides a touch device for detecting whether a transmitter is suspended on the touch device. Referring to fig. 4, the transmitter T transmits a first signal S1, and the touch device Td senses the first signal S1 to generate a second electrical signal S2. At this time, the third electrical signal S3 of the second electrical signals S2 is derived via the proximity object Ob. The touch device Td detects the intensity of the third electrical signal S3 to determine whether there is a transmitter T floating on the touch device Td.

Similarly, the touch device Td can determine whether the transmitter T touches or floats on the touch device Td by the first threshold and the second threshold. When the touch device Td detects that the intensity of the third electrical signal S3 is greater than the first threshold value, it is determined that the transmitter T is suspended in the touch device Td. At this time, the touch device Td may further detect whether the third electrical signal S3 is smaller than the second threshold. When the touch device Td detects that the intensity of the third electrical signal S3 is smaller than the second threshold, it is determined that the transmitter T is suspended in the touch device Td. When the touch device Td detects that the intensity of the third electrical signal S3 is greater than the second threshold value, it is determined that the transmitter T touches the touch device Td.

Moreover, the frequencies of the second electrical signal S2 and the third electrical signal S3 are necessarily the same, so the touch device Td can detect the frequency of the third electrical signal S3 before detecting the intensity of the third electrical signal S3 to determine whether the transmitter close to the touch device Td is the transmitter T corresponding to the touch device Td. When the touch device Td detects that the frequency of the third electrical signal S3 is the default frequency, it is determined that the transmitter T corresponding to the touch device Td exists. At this time, the touch device Td may further detect the intensity of the third electrical signal S3 to determine that the transmitter T touches or floats on the touch device Td. If the touch device Td detects that the frequency of the third electrical signal S3 is not the default frequency, it is determined that there is no transmitter T corresponding to the touch device Td, and the subsequent electrical signal strength detection is not required to be performed.

In addition, the touch device Td may further detect a function value of the second electrical signal S2 and the third electrical signal S3 after determining that the frequency of the second electrical signal S2 or the third electrical signal S3 matches the default frequency, so as to determine whether the transmitter T is floating on the touch device Td. When the touch device Td detects that the function value is greater than a third threshold value, it is determined that the transmitter T is suspended in the touch device Td. The function value can be related to the sum of the absolute value of the second electrical signal S2 and the absolute value of the third electrical signal S3, or can be related to the difference between the absolute value of the second electrical signal S2 and the absolute value of the third electrical signal S3. In some examples, the function value may be related to an absolute value of a difference between the second electrical signal S2 and a reference value, and an absolute value of a difference between the third electrical signal S3 and the reference value, such as a sum of the two or a difference between the two.

Referring to fig. 5, the touch device Td includes a control module Cm and an electrode module Em, wherein the electrode module Em includes a plurality of driving electrodes Tx and a plurality of sensing electrodes Rx. When the transmitter T is determined to be floating on the touch device Td, the control module Cm can detect the floating positions of the transmitter T on the driving electrodes Tx and the sensing electrodes Rx simultaneously, or detect the floating positions of the transmitter T on the driving electrodes Tx and the sensing electrodes Rx in different time.

When the control module Cm determines that the transmitter T is suspended in the touch device Td, the control module Cm sets an area including the suspended position of the transmitter T. Furthermore, the control module Cm detects the transmitter T in the area, and performs mutual capacitance touch detection on the driving electrodes Tx and the sensing electrodes Rx outside the area.

When the coverage area of the plurality of driving electrodes Tx is larger than the coverage area of the plurality of sensing electrodes Rx, the control module Cm detects all or a portion of the plurality of driving electrodes Tx to detect the intensity of the second electrical signal S2 or the third electrical signal S3, or a function value of the second electrical signal S2 or the third electrical signal S3. On the contrary, when the coverage area of the plurality of sensing electrodes Rx is larger than the coverage area of the plurality of driving electrodes Tx, the control module Cm detects all or part of the plurality of sensing electrodes Rx to detect the intensity of the second electrical signal S2 or the third electrical signal S3, or a function value of the second electrical signal S2 or the third electrical signal S3.

The touch device Td sets the undetected driving electrodes Tx and sensing electrodes Rx to be floating when the control module Cm detects all or part of the plurality of driving electrodes Tx, or sets the undetected driving electrodes Tx and sensing electrodes Rx to be floating when the control module Cm detects all or part of the plurality of sensing electrodes Rx.

Referring to fig. 6, the present invention provides a touch method for determining that an initiator is close to a touch device. In step 600, a first electrical signal is sensed proximate to a touch device to generate a second electrical signal. In step 610, it is detected whether the intensity of the second electrical signal is greater than a first threshold value to determine whether there is a transmitter floating on the touch device. In step 620, when the intensity of the second electrical signal is smaller than the first threshold value, it is determined that no transmitter is suspended on the touch device. In step 630, it is detected whether the intensity of the second electrical signal is greater than a second threshold value when the intensity of the second electrical signal is greater than the first threshold value. In step 632, it is determined that the communicator touches the touch device when the intensity of the second electrical signal is greater than a second threshold. In step 634, it is determined that the transmitter is floating on the touch device when the intensity of the second electrical signal is smaller than a second threshold.

In addition, before step 610, step 602 may be executed to detect whether the frequency of the second electrical signal is a default frequency. When the frequency of the second electrical signal is the default frequency, step 610 is executed to detect the strength of the second electrical signal, wherein the transmitter transmits the first electrical signal, and the frequency of the first electrical signal is the default frequency. If the frequency of the second electrical signal is not the default frequency, step 620 is executed to determine that no transmitter is suspended in the touch device, and the detection of the intensity of the second electrical signal is terminated.

When the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the driving electrodes and the floating position of the transmitter on the sensing electrodes are detected simultaneously or in a time-sharing manner, as shown in step 640. Furthermore, in step 650, an area is set, which includes the floating position of the transmitter, wherein the area performs the detection of the transmitter, and the touch devices outside the area perform the mutual capacitance touch detection.

Referring to fig. 7, the present invention provides a touch method for determining that an initiator is close to a touch device. In step 700, a first electrical signal proximate to a touch device is sensed to generate a second electrical signal. In step 710, it is detected whether the intensity of a third electrical signal derived from the touch device to a proximity object is greater than a first threshold value to determine whether there is a transmitter floating on the touch device, wherein the second electrical signal includes the third electrical signal. In step 720, when the intensity of the third electrical signal is smaller than the first threshold, it is determined that no transmitter is suspended on the touch device. In step 730, it is detected whether the intensity of the third electrical signal is greater than a second threshold value when the intensity of the third electrical signal is greater than the first threshold value. In step 732, it is determined that the communicator touches the touch device when the intensity of the third electrical signal is greater than a second threshold. In step 734, when the intensity of the third electrical signal is smaller than the second threshold value, it is determined that the transmitter is suspended on the touch device. The step 710 may also be detecting a function value of the second electrical signal and the third electrical signal to determine whether the transmitter is suspended on the touch device.

In addition, before step 710, step 702 may be executed to detect whether the frequency of the second electrical signal or the third electrical signal is a default frequency. When the frequency of the second electrical signal or the third electrical signal is the default frequency, step 710 is executed to detect the intensity of the third electrical signal or a function value of the second electrical signal and the third electrical signal, wherein the transmitter transmits the first electrical signal, and the frequency of the first electrical signal is the default frequency. If the frequency of the third electrical signal is not the default frequency, step 720 is executed to determine that no transmitter is suspended in the touch device, and the detection of the intensity or the function value of the third electrical signal is terminated.

When the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the driving electrodes and the floating position of the transmitter on the sensing electrodes are detected simultaneously or in a time-sharing manner, as shown in step 740. Furthermore, in step 750, an area is set, which includes the floating position of the transmitter, wherein the area performs the detection of the transmitter, and the touch devices outside the area perform the mutual capacitance touch detection.

In addition, the electrodes to be detected can be determined according to the coverage area of the electrodes. When the coverage area of the plurality of driving electrodes is larger than that of the plurality of sensing electrodes, all or part of the plurality of driving electrodes are detected to judge whether the sender suspended on the touch device exists. When all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to be floating.

When the coverage area of the plurality of sensing electrodes is larger than that of the plurality of driving electrodes, all or part of the plurality of sensing electrodes are detected to judge whether the sender suspended on the touch device exists. When detecting all or part of the sensing electrodes, the undetected driving electrodes and sensing electrodes are set to be floating.

According to the foregoing, the present invention provides a touch processor for executing the method for determining that the transmitter is close to the touch device. First, the intensity of a second electrical signal is detected, wherein a touch device senses the first electrical signal to generate the second electrical signal. Then, whether an emitter which is suspended on the touch device exists is judged according to the strength of the second electric signal. The remaining relevant details are as described above.

Furthermore, the invention provides a touch processor for executing the method for judging the proximity of the sender to the touch device. First, the intensity of a third electrical signal is detected, wherein the touch device senses a first electrical signal to generate a second electrical signal, and the third electrical signal of the second electrical signal is derived from a touch device to a proximity object. Then, according to the intensity of the third electrical signal, whether a transmitter suspending in the touch device exists is judged. The remaining relevant details are as described above.

According to the above, the present invention provides a touch system Ts, which includes an emitter T and the touch device Td, please refer to fig. 4. The transmitter T sends a first electrical signal S1. The touch device Td senses the first electrical signal S1 to generate a second electrical signal S2, and detects the intensity of the second electrical signal S2 to determine whether the transmitter T is floating on the touch device Td.

Furthermore, the present invention provides a touch system Ts, which includes an emitter T and the touch device Td, please refer to fig. 4. The transmitter T emits a first electrical signal s 1. The touch device Td senses the first electrical signal S1 to generate a second electrical signal S2, and a third electrical signal S3 of the second electrical signal S2 is derived through a proximity object Ob, wherein the touch device Td detects the intensity of the third electrical signal S3 to determine whether the transmitter T is suspended on the touch device Td.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (29)

1. A touch method is characterized by comprising the following steps:

sensing a first electric signal close to a touch device to generate a second electric signal, wherein the frequency of the first electric signal is a default frequency;

detecting whether the frequency of the second electrical signal is the default frequency;

detecting a function value of the second electrical signal when the frequency of the second electrical signal is the default frequency, wherein the function value includes a sum of an absolute value of the second electrical signal and an absolute value of a third electrical signal, a difference between the absolute value of the second electrical signal and the absolute value of the third electrical signal, a first absolute value of a difference between the second electrical signal and a reference value, a second absolute value of a difference between the third electrical signal and the reference value, a sum of the first absolute value and the second absolute value, or a difference between the first absolute value and the second absolute value; and

detecting the intensity of the second electrical signal according to the function value of the second electrical signal to determine whether a transmitter suspended on the touch device exists.

2. The method of claim 1, wherein the communicator is determined to be floating on the touch device when the intensity of the second electrical signal is greater than a first threshold, and the communicator is determined to be touching the touch device when the intensity of the second electrical signal is greater than a second threshold, wherein the second threshold is greater than the first threshold.

3. The touch method of claim 1, wherein the transmitter transmits the first electrical signal.

4. The touch method of claim 1, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in different time periods.

5. The touch method of claim 1, wherein when the touch device is determined to be floating on the touch device, a region is set, the region including a floating position of the touch device, wherein the region is used for detecting the touch device, and the touch devices outside the region are used for mutual capacitance touch detection.

6. The touch method of claim 1, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a portion of the plurality of driving electrodes are detected to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a portion of the plurality of sensing electrodes are detected to detect the intensity of the second electrical signal.

7. The touch method of claim 6, wherein the undetected driving electrodes and sensing electrodes are set to be floating when detecting all or part of the driving electrodes, or the undetected driving electrodes and sensing electrodes are set to be floating when detecting all or part of the sensing electrodes.

8. A touch device, comprising:

an electrode module which induces a first electrical signal to generate a second electrical signal, and the frequency of the first electrical signal is a default frequency; and

a control module for detecting whether the frequency of the second electrical signal is the default frequency;

detecting a function value of the second electrical signal when the frequency of the second electrical signal is the default frequency, wherein the function value includes a sum of an absolute value of the second electrical signal and an absolute value of a third electrical signal, a difference between the absolute value of the second electrical signal and the absolute value of the third electrical signal, a first absolute value of a difference between the second electrical signal and a reference value, a second absolute value of a difference between the third electrical signal and the reference value, a sum of the first absolute value and the second absolute value, or a difference between the first absolute value and the second absolute value; and

and detecting the intensity of the second electric signal according to the function value of the second electric signal so as to judge whether a sender is suspended on the touch device.

9. The touch device of claim 8, wherein the communicator is determined to be floating on the touch device when the intensity of the second electrical signal is greater than a first threshold, and the communicator is determined to be touching the touch device when the intensity of the second electrical signal is greater than a second threshold, wherein the second threshold is greater than the first threshold.

10. The touch device of claim 8, wherein the transmitter transmits the first electrical signal.

11. The touch device of claim 8, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

12. The touch device of claim 8, wherein when the transmitter is determined to be floating on the touch device, the control module sets a region including a floating position of the transmitter, wherein the region performs detection of the transmitter, and the electrode modules outside the region perform mutual capacitance touch detection.

13. The touch device of claim 8, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, the control module detects all or part of the plurality of driving electrodes to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, the control module detects all or part of the plurality of sensing electrodes to detect the intensity of the second electrical signal.

14. The touch device of claim 13, wherein the control module sets the undetected driving electrodes and sensing electrodes to be floating when the control module detects all or part of the driving electrodes, or sets the undetected driving electrodes and sensing electrodes to be floating when the control module detects all or part of the sensing electrodes.

15. A touch processor, comprising:

a device for detecting the intensity of a second electrical signal, wherein a touch device senses a first electrical signal to generate the second electrical signal, and the frequency of the first electrical signal is a default frequency;

detecting whether the frequency of the second electrical signal is the default frequency;

detecting a function value of the second electrical signal when the frequency of the second electrical signal is the default frequency, wherein the function value includes a sum of an absolute value of the second electrical signal and an absolute value of a third electrical signal, a difference between the absolute value of the second electrical signal and the absolute value of the third electrical signal, a first absolute value of a difference between the second electrical signal and a reference value, a second absolute value of a difference between the third electrical signal and the reference value, a sum of the first absolute value and the second absolute value, or a difference between the first absolute value and the second absolute value; and

detecting the intensity of the second electrical signal according to the function value of the second electrical signal, and judging whether a device suspending in a sender of the touch device exists.

16. The touch processor of claim 15, wherein the communicator is determined to be floating on the touch device when the intensity of the second electrical signal is greater than a first threshold value, and the communicator is determined to touch the touch device when the intensity of the second electrical signal is greater than a second threshold value, wherein the second threshold value is greater than the first threshold value.

17. The touch processor of claim 15, wherein the communicator sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

18. The touch processor of claim 15, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the communicator is determined to be floating on the touch device, the floating position of the communicator on the plurality of driving electrodes and the floating position of the communicator on the plurality of sensing electrodes are detected simultaneously or in different time periods.

19. The touch processor of claim 15, wherein when the touch device is determined to be floating on the touch device, a region is defined, the region including the floating position of the touch device, wherein the region is used for detecting the touch device, and the touch devices outside the region are used for mutual capacitance touch detection.

20. The touch processor of claim 15, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, all or a portion of the plurality of driving electrodes are detected to detect the intensity of the second electrical signal, or when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes, all or a portion of the plurality of sensing electrodes are detected to detect the intensity of the second electrical signal.

21. The touch processor of claim 20, wherein the undetected drive and sense electrodes are set to float when all or a portion of the plurality of drive electrodes are detected, or the undetected drive and sense electrodes are set to float when all or a portion of the plurality of sense electrodes are detected.

22. A touch system, comprising:

a transmitter for transmitting a first electrical signal; and

the touch device is used for sensing the first electric signal to generate a second electric signal, and the frequency of the first electric signal is a default frequency;

detecting whether the frequency of the second electrical signal is the default frequency;

detecting a function value of the second electrical signal when the frequency of the second electrical signal is the default frequency, wherein the function value includes a sum of an absolute value of the second electrical signal and an absolute value of a third electrical signal, a difference between the absolute value of the second electrical signal and the absolute value of the third electrical signal, a first absolute value of a difference between the second electrical signal and a reference value, a second absolute value of a difference between the third electrical signal and the reference value, a sum of the first absolute value and the second absolute value, or a difference between the first absolute value and the second absolute value; and

detecting the intensity of the second electrical signal according to the function value of the second electrical signal to determine whether the transmitter is suspended on the touch device.

23. The touch system of claim 22, wherein the communicator is determined to be floating on the touch device when the intensity of the second electrical signal is greater than a first threshold, and the communicator is determined to be touching the touch device when the intensity of the second electrical signal is greater than a second threshold, wherein the second threshold is greater than the first threshold.

24. The touch system of claim 22, wherein the touch device comprises:

an electrode module for sensing the first electrical signal to generate the second electrical signal; and

and the control module detects the intensity of the second electric signal so as to judge whether the sender is suspended on the touch device.

25. The touch system of claim 24, wherein the touch device detects whether the frequency of the second electrical signal is the default frequency, wherein the control module detects the intensity of the second electrical signal when the frequency of the second electrical signal is the default frequency, and wherein the frequency of the first electrical signal is the default frequency.

26. The touch system of claim 24, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and when the transmitter is determined to be floating on the touch device, the control module detects the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner.

27. The touch system of claim 24, wherein when the touch device is determined to be floating, the control module sets a region including a floating position of the touch device, wherein the region performs detection of the touch device, and the electrode modules outside the region perform mutual capacitance touch detection.

28. The touch system of claim 24, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and the control module detects all or a portion of the plurality of driving electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, or detects all or a portion of the plurality of sensing electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes.

29. The touch system of claim 28, wherein the control module sets the undetected driving electrodes and sensing electrodes to float when the control module detects all or part of the driving electrodes, or sets the undetected driving electrodes and sensing electrodes to float when the control module detects all or part of the sensing electrodes.

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