CN109085940B - Touch terminal and touch method and device thereof - Google Patents

Abstract

The invention relates to a touch terminal and a touch method and a touch device thereof, wherein when the touch terminal is positioned in a liquid environment and is in a screen locking state, the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state are detected, and ultrasonic scanning is carried out on the touch terminal; and generating an ultrasonic sensing signal according to the returned ultrasonic wave, and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal. Unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information according to the safety authentication level; after the unlocking authentication is passed, unlocking operation is carried out on the touch terminal, ultrasonic full-screen scanning is carried out on a display screen of the touch terminal, and touch coordinates of the display screen are obtained according to returned ultrasonic waves; and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The touch information is acquired through ultrasonic scanning to carry out unlocking authentication, the touch terminal is subjected to unlocking operation and touch operation after the unlocking authentication is passed, and the touch terminal can be used for carrying out touch operation when the touch terminal is in a liquid environment.

Description

Touch terminal and touch method and device thereof

Technical Field

The present invention relates to the field of touch technologies, and in particular, to a touch terminal and a touch method and device thereof.

Background

A touch screen is also called a "touch screen" or a "touch panel", and is an inductive device capable of receiving input signals such as touch. When the graphic button on the screen is touched, the tactile feedback system on the screen can drive various connecting devices according to a pre-programmed program, so that the tactile feedback system can replace a mechanical button panel and produce vivid video and audio effects by virtue of a liquid crystal display picture. With the increase of the variety of touch screen products, the touch screen is developing toward the aspects of falling resistance, water resistance, and the like.

The traditional touch screen adopts a capacitive touch structure, the capacitive touch screen is a four-layer composite glass screen, the inner surface and the interlayer of the glass screen are respectively coated with an Indium Tin Oxide (ITO), and the outermost layer is a glass protective layer. When a finger touches the metal layer, a coupling capacitance is formed between the user and the touch screen surface due to the electric field of the human body, and for high-frequency current, the capacitance is a direct conductor, so that the finger draws a small current from the contact point. The current flows out of the electrodes on the four corners of the touch screen, the current flowing through the four electrodes is in proportion to the distance from the finger to the four corners, and the controller obtains the position of the touch point to carry out corresponding operation through accurate calculation of the four current proportions. Because the touch detection can be carried out only by forming a coupling capacitor on the surface of the touch screen and a human body, when the touch screen is in liquid environments such as underwater and the like, the traditional touch screen cannot realize touch operation in the liquid environments due to the conductive property of liquid.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a touch terminal capable of performing touch operation in a liquid environment, and a touch method and device thereof.

A touch method of a touch terminal comprises the following steps:

when the touch terminal is located in a liquid environment and is in a screen locking state, detecting the type of the screen locking state of the touch terminal and a safety certification level corresponding to the screen locking state, and carrying out ultrasonic scanning on the touch terminal; the touch terminal is in a screen locking state for a plurality of reasons, and the types of the screen locking state correspond to different reasons;

generating an ultrasonic sensing signal according to the returned ultrasonic wave, and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal; the touch information comprises touch position and/or fingerprint information;

according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information;

after the unlocking authentication is passed, unlocking operation is carried out on the touch terminal, ultrasonic full-screen scanning is carried out on a display screen of the touch terminal, and touch coordinates of the display screen are obtained according to returned ultrasonic waves;

and controlling the display screen to perform corresponding touch operation according to the touch coordinates.

According to the touch control method of the touch control terminal, when the touch control terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining with a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, and the touch terminal can be used for carrying out touch operation when the liquid environment is in.

In one embodiment, the detecting the type of the screen locking state of the touch terminal and the security authentication level corresponding to the screen locking state includes the following steps:

when the screen locking state of the touch terminal is detected to be automatically in a screen locking state after being started, the corresponding security authentication grade is a first type grade;

when the screen locking state of the touch terminal is detected to be entered into according to the received screen locking instruction, the corresponding security authentication level is a second type level;

and when the type of the screen locking state of the touch terminal is detected to be that the screen locking state is entered when an operation instruction is not received within a preset time length, the corresponding safety authentication level is a third type level.

And determining corresponding security authentication levels according to different reasons of the touch terminal in the screen locking state, so as to realize the division of the security authentication levels in different screen locking modes.

In one embodiment, the first type class is higher in priority than the second type class, which is higher in priority than the third type class.

Defining the priority of the security authentication levels corresponding to different reasons of the touch terminal in the screen locking state, determining the security levels of the touch terminal in different screen locking states, and performing corresponding unlocking authentication operation according to the different security levels subsequently.

In one embodiment, the step of performing unlocking authentication by using the touch position and/or the fingerprint information according to the security authentication level includes the following steps:

when the security authentication level is a first type level, obtaining a password sequence according to the touch position and a preset display screen touch coordinate, and performing unlocking authentication according to the password sequence and the fingerprint information;

when the safety authentication level is a second type level, obtaining a password sequence according to the touch position and a preset display screen touch coordinate, and performing unlocking authentication according to the password sequence;

and when the safety authentication level is a third type level, unlocking authentication is carried out according to the fingerprint information.

And determining the corresponding safety authentication level according to the screen locking state of the touch terminal, so that the unlocking authentication mode is adjusted, and the touch operation safety of the touch terminal is improved.

In one embodiment, before the step of detecting the security authentication level corresponding to the screen locking state of the touch terminal and performing ultrasonic scanning on the touch terminal when the touch terminal is located in a liquid environment and in the screen locking state, the method further includes the following steps:

carrying out ultrasonic time-sharing scanning on a touch terminal, and detecting whether the touch terminal is in a liquid environment;

if so, stopping ultrasonic time-sharing scanning, detecting a security authentication level corresponding to the screen locking state of the touch terminal when the touch terminal is located in a liquid environment and is in the screen locking state, and performing ultrasonic scanning on the touch terminal;

and if not, returning to the step of performing ultrasonic time-sharing scanning on the touch terminal and detecting whether the touch terminal is in a liquid environment.

The environment of the touch terminal is detected in a time-sharing scanning mode, and power consumption is reduced. When detecting that the touch terminal is in the liquid environment and is in the lock screen state, carry out ultrasonic scanning, use the ultrasonic wave to carry out fingerprint unblock and touch-control operation in the realization liquid environment. Just utilize ultrasonic scanning to carry out fingerprint unblock and touch-control operation when touch-control terminal is in liquid environment, if the touch-control terminal need not start ultrasonic fingerprint unblock and touch-control operation when not being in liquid environment, the energy is saved reduces the consumption, reduces use cost.

In one embodiment, after the step of performing an unlocking operation on the touch terminal after the unlocking authentication is passed, and performing ultrasonic full-screen scanning on a display screen of the touch terminal, the method further includes the following steps:

and detecting whether the touch terminal is in a liquid environment, and when the touch terminal is not detected to be in the liquid environment, returning to the step of performing ultrasonic time-sharing scanning on the touch terminal to detect whether the touch terminal is in the liquid environment.

When the touch terminal is not in the liquid environment, the ultrasonic scanning touch is stopped, and the ultrasonic time-sharing scanning is performed again, so that the energy can be saved, the power consumption can be reduced, and the use cost can be reduced.

A touch device of a touch terminal comprises:

the unlocking scanning module is used for detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state when the touch terminal is located in a liquid environment and in the screen locking state, and carrying out ultrasonic scanning on the touch terminal; the touch terminal is in a screen locking state for a plurality of reasons, and the types of the screen locking state correspond to different reasons;

the information extraction module is used for generating an ultrasonic sensing signal according to the returned ultrasonic waves and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal; the touch information comprises touch position and/or fingerprint information;

the unlocking authentication module is used for carrying out unlocking authentication by utilizing the touch position and/or the fingerprint information according to the safety authentication level;

the touch scanning module is used for unlocking the touch terminal after the unlocking authentication is passed, carrying out ultrasonic full-screen scanning on a display screen of the touch terminal and acquiring a touch coordinate of the display screen according to returned ultrasonic waves;

and the touch processing module is used for controlling the display screen to perform corresponding touch operation according to the touch coordinate.

According to the touch device of the touch terminal, when the touch terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining with a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, and the touch terminal can be used for touch operation when the liquid environment is in.

In one embodiment, the touch device further includes:

the environment detection module is used for detecting the safety certification level corresponding to the screen locking state of the touch terminal when the touch terminal is located in a liquid environment and is in the screen locking state, performing ultrasonic time-sharing scanning on the touch terminal before performing ultrasonic scanning on the touch terminal and detecting whether the touch terminal is located in the liquid environment or not by the unlocking scanning module; if so, stopping ultrasonic time-sharing scanning, controlling an unlocking scanning module to unlock a scanning module, detecting a security authentication level corresponding to the screen locking state of the touch terminal when the touch terminal is located in a liquid environment and is in the screen locking state, and performing ultrasonic scanning on the touch terminal; if not, the touch terminal is subjected to ultrasonic time-sharing scanning again, and whether the touch terminal is in a liquid environment or not is detected.

The environment of the touch terminal is detected in a time-sharing scanning mode, and power consumption is reduced. When the touch terminal is detected to be in a liquid environment and in a screen locking state, ultrasonic scanning is performed, and ultrasonic fingerprint unlocking and ultrasonic touch control are used in the liquid environment. Just utilize ultrasonic scanning to carry out fingerprint unblock and touch-control operation when touch terminal is in the liquid environment, then need not to start ultrasonic fingerprint unblock and touch-control operation when if touch terminal is not in the liquid environment, the energy can be saved reduces the consumption, reduces use cost.

A touch terminal comprises a display screen, an ultrasonic device and a control device, wherein the control device is connected with the ultrasonic device.

The control device is used for detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state when the touch terminal is located in a liquid environment and is in the screen locking state, controlling the ultrasonic device to perform ultrasonic scanning on the touch terminal, receiving an ultrasonic induction signal generated by the ultrasonic device according to returned ultrasonic waves, and acquiring touch information corresponding to the safety certification level from the ultrasonic induction signal; the touch information comprises touch position and/or fingerprint information; according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information; after the unlocking authentication is passed, unlocking the touch terminal, controlling the ultrasonic device to perform ultrasonic full-screen scanning on the display screen of the touch terminal, and acquiring the touch coordinate of the display screen according to the returned ultrasonic wave received by the ultrasonic device; controlling the display screen to perform corresponding touch operation according to the touch coordinates; the touch terminal is in a screen locking state for a plurality of reasons, and the types of the screen locking state correspond to different reasons.

According to the touch terminal, when the touch terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining with a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, and the touch terminal can be used for touch operation when the liquid environment is in.

In one embodiment, the ultrasonic device comprises a first fingerprint module and a second fingerprint module which are connected with the control device.

The first fingerprint module is arranged in a display area of the touch terminal and used for carrying out ultrasonic scanning on the display screen, and the second fingerprint module is arranged in a non-display area of the touch terminal and used for carrying out ultrasonic scanning on the non-display area of the touch terminal.

Through setting up two fingerprint modules and carrying out ultrasonic scanning respectively to the display area and the non-display area at touch terminal, improved the comprehensiveness of acquireing touch information.

According to the touch terminal and the touch method and device, when the touch terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, and the touch terminal can be used for carrying out touch operation when the liquid environment is in.

Drawings

Fig. 1 is a flowchart illustrating a touch method of a touch terminal according to an embodiment;

FIG. 2 is a flowchart illustrating a touch method of a touch terminal according to another embodiment;

FIG. 3 is a diagram illustrating a structure of a touch device of a touch terminal according to an embodiment;

fig. 4 is a structural diagram of a touch device of a touch terminal in another embodiment.

Detailed Description

In an embodiment, a touch method of a touch terminal is provided, where the touch terminal may specifically be a touch screen mobile phone, a tablet computer, a touch advertisement screen, and other devices. As shown in fig. 1, the method comprises the steps of:

step S120: when the touch terminal is located in a liquid environment and is in a screen locking state, detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state, and performing ultrasonic scanning on the touch terminal.

In particular, since the reflection degree of the ultrasonic waves in the liquid environment is greatly different from that in the air, it is possible to determine whether the touch terminal is in the liquid environment by emitting the ultrasonic waves and according to the returned ultrasonic waves. The liquid environment may include a conductive liquid environment and a non-conductive liquid environment, and the conductive liquid may be water or other liquid containing free electrons or ions. In addition, the user can also set the environment where the touch terminal is located by inputting an instruction. Whether the touch terminal is in the screen locking state or not can be detected through the existing control program of the touch terminal, and when the touch terminal is located in a liquid environment and in the screen locking state, the safety certification level corresponding to the screen locking state of the touch terminal is detected. Specifically, the touch terminal is in the screen locking state for various reasons, for example, the touch terminal is automatically in the screen locking state after being started, enters the screen locking state according to a screen locking instruction input by a user, enters the screen locking state when the touch terminal does not receive an operation instruction within a preset time period, and the like, and the category of the screen locking state corresponds to different reasons. The corresponding relation between different reasons of the touch terminal in the screen locking state and the security authentication level can be stored in advance, and the security authentication level corresponding to the current screen locking state of the touch terminal can be directly obtained according to the stored corresponding relation. The touch information can be obtained by performing ultrasonic scanning on the touch terminal through the ultrasonic device, and the ultrasonic device can scan the display area of the touch terminal or can simultaneously scan the display area and the non-display area of the touch terminal. And scanning the display area of the touch terminal to acquire the touch operation of the user in the display area. The non-display area of the touch terminal may be a preset touch area, and taking the touch terminal as a mobile phone as an example, the touch area may be set on the back of the mobile phone (for example, the back is close to the top position) or at the lower end of the display screen of the mobile phone (for example, the position of the home key), and the ultrasonic device is used to perform ultrasonic scanning to obtain the touch operation of the user in the non-display area.

In an embodiment, the step S120 of detecting the type of the lock screen state of the touch terminal and the security authentication level corresponding to the lock screen state includes the following steps:

and when the type of the screen locking state of the touch terminal is detected to be the screen locking state after the touch terminal is started, the corresponding security authentication grade is the first type grade.

And when the type of the screen locking state of the touch terminal is detected to be entering the screen locking state according to the received screen locking instruction, the corresponding safety authentication level is a second type level.

And when the type of the screen locking state of the touch terminal is detected as that the screen locking state is entered when the operation instruction is not received within the preset time length, the corresponding safety authentication level is a third type level.

And determining corresponding security authentication levels according to different reasons of the touch terminal in the screen locking state, and dividing the security authentication levels in different screen locking modes so as to perform unlocking authentication according to a corresponding mode subsequently.

Further, in one embodiment, the priority of the first type class is higher than the priority of the second type class, which is higher than the priority of the third type class. Defining the priority of the security authentication levels corresponding to different reasons of the touch terminal in the screen locking state, determining the security levels of the touch terminal in the screen locking state for different reasons, and executing corresponding unlocking authentication operation according to different security levels subsequently.

Step S130: and generating an ultrasonic sensing signal according to the returned ultrasonic wave, and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal.

Different reasons for the touch terminal being in the screen locking state are not unique to the specific corresponding relationship of the security authentication level, and a user can set the corresponding relationship through a virtual key or a hardware switch of the touch terminal. The specific division mode of the security authentication levels is not unique, and three security authentication levels of high, medium and low can be set. Correspondingly, in this embodiment, when the touch terminal is automatically in the screen locking state after being powered on, the corresponding security authentication level is high; when the touch terminal enters the screen locking state according to the screen locking instruction input by the user, the corresponding security authentication level is medium, and when the touch terminal does not receive the operation instruction within the preset time length and enters the screen locking state, the corresponding security authentication level is low.

Ultrasonic wave can take place to reflect back to ultrasonic device after meetting the touching thing, and ultrasonic device generates corresponding ultrasonic wave induction signal according to the ultrasonic wave that returns. Specifically, touch information required for subsequent unlocking authentication can be extracted from the ultrasonic sensing signal through the control device according to the security authentication level. The position of the ultrasonic device for generating vibration is different according to the position of the received returned ultrasonic wave, and the ultrasonic induction signals generated by the vibration at different positions are correspondingly different. The control device can obtain the voltage change of the ultrasonic device caused by vibration according to the received ultrasonic induction signal, so that the touch information of the touch terminal is extracted and obtained.

The touch information specifically comprises touch positions and/or fingerprint information, and the control device obtains the voltage change part of the ultrasonic device caused by vibration according to the received ultrasonic sensing signal, so that the corresponding touch positions can be extracted. When the control device reads fingerprint information, the control device can realize fingerprint identification by reflected waves by utilizing the difference of ultrasonic reflection characteristics of the boundary between the touch surface and the fingertip and the boundary between the fingertip epidermis and the subcutaneous tissue. According to different safety authentication levels, the specific types of touch information required by unlocking authentication are different. For example, after a corresponding security authentication level is determined according to a screen locking state of the touch terminal, when the security level is high, a touch position of a user in a display area and fingerprint information in the display area and a non-display area are acquired to be used for unlocking authentication; when the security level is middle, acquiring fingerprint information of a user in a display area and a non-display area for unlocking authentication; and when the security level is low, acquiring the touch position of the user in the display area for unlocking authentication.

In addition, due to the fact that the propagation effect of the ultrasonic waves in water is good, when the method is applied to touch control of the underwater touch control terminal, voltage changes of areas with ultrasonic wave returning and areas without ultrasonic wave returning can be better distinguished, and touch information can be more accurately identified.

Step S140: and according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information.

Similarly, the unlocking authentication mode is correspondingly different according to different set security authentication levels. In one embodiment, step S140 includes steps 142 through 146.

Step 142: and when the security authentication level is a first type level, obtaining a password sequence according to the touch position and the preset touch coordinate of the display screen, and performing unlocking authentication according to the password sequence and the fingerprint information.

If the security authentication level is a first type level, acquiring a password sequence input by a user according to a touch position acquired by the touch operation of the user on the display screen and combining the touch coordinates of the display screen; and extracting fingerprint information of the finger of the user when the user performs touch operation. Specifically, the virtual number buttons may be displayed on the display screen, the obtained touch position may be combined with the touch coordinates of the display screen to obtain a value represented by the button clicked by the user, and the values extracted according to the continuous clicking operation of the user may be combined to form the password sequence input by the user. Comparing the obtained password sequence and the fingerprint information with a preset verification password and a preset verification fingerprint respectively, if the obtained password sequence is consistent with the verification password and the obtained fingerprint information is consistent with the verification fingerprint, passing the unlocking authentication, and performing the step S150; otherwise, the unlocking authentication is not passed, authentication failure information can be output, ultrasonic scanning is carried out again, and the touch information is obtained again to carry out unlocking authentication.

Step 144: and when the security authentication level is the second type level, unlocking authentication is carried out according to the fingerprint information.

If the security authentication level is the second type level, extracting fingerprint information of a user finger when the user performs touch operation, directly comparing whether the fingerprint information is consistent with preset fingerprint information, if so, passing the unlocking authentication, and performing the step S150; otherwise, authentication failure information can be output, ultrasonic scanning is carried out again, and touch information is obtained again to carry out unlocking authentication.

Step 146: and when the safety authentication level is a third type level, obtaining a password sequence according to the touch position and the preset touch coordinate of the display screen, and performing unlocking authentication according to the password sequence.

If the security authentication level is a third type level, acquiring a password sequence input by a user according to the obtained touch position and the touch coordinate of the display screen, comparing whether the password sequence is consistent with a preset verification password, if so, passing the unlocking authentication, and performing the step S150; otherwise, authentication failure information can be output, ultrasonic scanning is carried out again, and touch information is obtained again to carry out unlocking authentication.

The priority ranks of the first type rank, the second type rank, and the third type rank are not unique, and in this embodiment, the first type rank, the second type rank, and the third type rank correspond to three security authentication ranks, i.e., high, medium, and low, respectively. When the security level is high, fingerprint and password unlocking authentication is carried out simultaneously; when the security level is middle, fingerprint unlocking authentication is carried out; and when the security level is low, carrying out password unlocking authentication. And determining the corresponding safety authentication level according to the screen locking state of the touch terminal, so that the unlocking authentication mode is adjusted, and the touch operation safety of the touch terminal is improved.

Step S150: and after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on the display screen of the touch terminal, and acquiring the touch coordinate of the display screen according to the returned ultrasonic wave.

After the unlocking authentication is passed, the control device is used for unlocking the touch terminal, then the ultrasonic device is controlled to perform full-screen scanning on the display screen of the touch terminal, and the touch coordinate of the display screen is obtained according to the returned ultrasonic wave. Specifically, the touch coordinates of the user on the display screen can be extracted from the ultrasonic induction signal generated by the ultrasonic device according to the returned ultrasonic wave. When a user performs a touch operation such as clicking or sliding on the display screen with a touch pen or a finger, a difference between a position where the touch operation is performed and ultrasonic waves reflected by other positions is detected, and then touch coordinates are calculated. Taking finger operation as an example, when a user finger clicks a display screen underwater, the reflected wave at the clicking position is different from other positions, and the difference is regarded as one-time clicking operation, so that a corresponding function is realized.

Step S160: and controlling the display screen to perform corresponding touch operation according to the touch coordinates.

After the touch coordinates of the user on the display screen are acquired, corresponding touch operations such as application program opening, page turning and the like are performed on the display screen according to the touch coordinates, and the ultrasonic touch operation of the terminal is achieved.

According to the touch control method of the touch control terminal, when the touch control terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining with a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, the touch terminal can be used for touch operation when the capacitive touch screen is in a liquid environment, and the problem that the traditional capacitive touch screen cannot be used in liquid environments such as underwater and the like is solved.

In one embodiment, as shown in fig. 2, before step S120, the method may further include step S110.

Step S110: performing ultrasonic time-sharing scanning on the touch terminal, and detecting whether the touch terminal is in a liquid environment; if yes, stopping the ultrasonic time-sharing scanning, and performing step S120; if not, the method returns to step S110, and performs ultrasonic time-sharing scanning again to detect the environment of the touch terminal.

The ultrasonic time-sharing scanning refers to transmitting ultrasonic waves according to preset frequency to scan the touch terminal, and the specific value of the preset frequency is not unique and can be 10 times/second, 20 times/second and the like. Because the reflected signal amplitudes of the ultrasonic waves in the air environment and the liquid environment are different and have great difference, the ultrasonic device can be used for carrying out ultrasonic time-sharing scanning on the touch terminal according to the preset frequency, the control device calculates the amplitude of the induction signal according to the ultrasonic signal returned by the time-sharing scanning, and the touch terminal can be determined to be in the air environment or the liquid environment according to the amplitude of the induction signal.

In this embodiment, the environment where the touch terminal is located is detected in a time-sharing scanning manner, so that power consumption can be reduced. When the touch terminal is detected to be in a liquid environment and in a screen locking state, ultrasonic scanning is performed, and fingerprint unlocking and touch operation are performed by using ultrasonic waves in the liquid environment. Just utilize ultrasonic scanning to carry out fingerprint unblock and touch-control operation when touch terminal is in the liquid environment, then need not to start ultrasonic fingerprint unblock and touch-control operation when if touch terminal is not in the liquid environment, the energy can be saved reduces the consumption, reduces use cost. It can be understood that when the touch terminal is in a non-liquid environment, the unlocking and touch operations can be performed in a capacitive touch screen manner.

Further, in an embodiment, after the step S150, the method may further include: and detecting whether the touch terminal is in a liquid environment, and returning to the step S110 when the touch terminal is not detected to be in the liquid environment.

Taking underwater ultrasonic touch as an example, when the touch terminal is in an underwater environment, the underwater mode is automatically started after the ultrasonic fingerprint is unlocked, and in the process of performing touch operation by performing ultrasonic full-screen scanning on the display screen of the touch terminal, whether the touch terminal is still in the underwater environment can be judged according to the detected ultrasonic sensing signal. And when the environment where the touch terminal is located is detected to be no longer the underwater environment, the underwater mode can be closed, the ultrasonic full-screen scanning on the display screen is stopped, the step S110 is returned, the ultrasonic time-sharing scanning on the touch terminal is started again, and the environment where the touch terminal is located is detected.

In this embodiment, when the touch terminal stops ultrasonic scanning touch after being not in a liquid environment, and ultrasonic time-sharing scanning is performed again, energy can be saved, power consumption can be reduced, and use cost can be reduced.

It should be noted that the environment where the touch terminal is located may be detected through ultrasonic time-sharing scanning, the ultrasonic fingerprint unlocking and the ultrasonic touch operation are automatically started when the touch terminal is in a liquid environment, the ultrasonic touch operation is stopped when the touch terminal is not in the liquid environment, and the ultrasonic time-sharing scanning is performed again; or the unlocking of the ultrasonic fingerprint and the starting and the closing of the ultrasonic touch operation can be controlled through a control instruction input by a user.

In an embodiment, a touch device of a touch terminal may specifically be a touch screen mobile phone, a tablet computer, a touch advertising screen, and the like. As shown in fig. 3, the apparatus includes anunlock scanning module 120, aninformation extraction module 130, anunlock authentication module 140, atouch scanning module 150, and atouch processing module 160.

The unlockingscanning module 120 is configured to detect a type of a screen locking state of the touch terminal and a security authentication level corresponding to the screen locking state when the touch terminal is in a liquid environment and in the screen locking state, and perform ultrasonic scanning on the touch terminal.

Whether the touch terminal is in a liquid environment can be determined by emitting ultrasonic waves and according to the returned ultrasonic waves, or the environment in which the touch terminal is located can be set by a user by inputting instructions. The method comprises the steps of obtaining the current state of the touch terminal by utilizing an existing control program of the touch terminal, and detecting the safety certification level corresponding to the screen locking state of the touch terminal when the touch terminal is located in a liquid environment and is in the screen locking state. The reasons for the touch terminal to be in the screen locking state include various reasons, and the type of the screen locking state corresponds to different reasons. The touch information can be obtained by performing ultrasonic scanning on the touch terminal through the ultrasonic device, and the touch information can be obtained by scanning a display area of the touch terminal or simultaneously scanning the display area and a non-display area of the touch terminal.

In one embodiment, when the unlockingscanning module 120 detects that the type of the screen locking state of the touch terminal is the screen locking state after the touch terminal is turned on, the corresponding security authentication level is the first type level; when the type of the screen locking state of the touch terminal is detected to be entering the screen locking state according to the received screen locking instruction, the corresponding security authentication level is of a second type; and when the type of the screen locking state of the touch terminal is detected as that the screen locking state is entered when the operation instruction is not received within the preset time length, the corresponding safety authentication level is a third type level.

And determining corresponding security authentication levels according to different reasons of the touch terminal in the screen locking state, and dividing the security authentication levels in different screen locking modes so as to perform unlocking authentication according to a corresponding mode subsequently.

Further, in one embodiment, the first type level has a higher priority than the second type level, and the second type level has a higher priority than the third type level. Defining the priority of the security authentication levels corresponding to different reasons of the touch terminal in the screen locking state, determining the security levels of the touch terminal in the screen locking state for different reasons, and executing corresponding unlocking authentication operation according to the different security levels subsequently.

Theinformation extraction module 130 is configured to generate an ultrasonic sensing signal according to the returned ultrasonic wave, and obtain touch information corresponding to the security authentication level from the ultrasonic sensing signal.

The specific corresponding relation between different reasons of the touch terminal in the screen locking state and the security authentication level is not unique, a user can set the corresponding relation in advance through a virtual key or a hardware switch of the touch terminal, and touch information required by subsequent unlocking authentication is extracted from the ultrasonic induction signal according to the security authentication level. Specifically, the position of the ultrasonic device generating the vibration is different according to the position of the received returned ultrasonic wave, and the ultrasonic induction signals generated by the vibration at different positions are correspondingly different. The voltage change of the ultrasonic device caused by vibration can be obtained according to the received ultrasonic induction signal, so that the touch information of the touch terminal is extracted and obtained.

The touch information specifically comprises touch positions and/or fingerprint information, and the voltage change part of the ultrasonic device caused by vibration is obtained according to the received ultrasonic induction signals, so that the corresponding touch positions can be extracted. When fingerprint information is read, the reflected waves are used to identify the fingerprint by utilizing the difference in the ultrasonic reflection characteristics between the boundary between the touch surface and the fingertip and between the fingertip epidermis and the subcutaneous tissue. According to different safety authentication levels, the specific types of touch information required by unlocking authentication are different.

In addition, due to the fact that the propagation effect of the ultrasonic waves in water is good, when the device is applied to touch control of an underwater touch control terminal, voltage changes of areas with ultrasonic wave returning and areas without ultrasonic wave returning can be better distinguished, and touch information can be more accurately identified.

The unlockingauthentication module 140 is configured to perform unlocking authentication by using the touch position and/or the fingerprint information according to the security authentication level.

Similarly, the unlocking authentication mode is correspondingly different according to different set security authentication levels. In one embodiment, the unlockingauthentication module 140 includes a first unlocking authentication unit, a second unlocking authentication unit, and a third unlocking authentication unit.

The first unlocking authentication unit is used for obtaining a password sequence according to the touch position and preset display screen touch coordinates when the safety authentication level is a first type level, and unlocking authentication is carried out according to the password sequence and the fingerprint information.

If the security authentication level is a first type level, acquiring a password sequence input by a user according to a touch position acquired by the touch operation of the user on the display screen and combining the touch coordinates of the display screen; and extracting fingerprint information of the finger of the user when the user performs touch operation. Specifically, the virtual numeric buttons may be displayed on the display screen, the obtained touch position may be combined with the touch coordinates of the display screen to obtain a numerical value represented by the button clicked by the user, and the numerical values extracted according to the continuous clicking operation of the user may be combined to form the password sequence input by the user. Comparing the obtained password sequence and the fingerprint information with a preset verification password and a preset verification fingerprint respectively, and if the obtained password sequence is consistent with the verification password and the obtained fingerprint information is consistent with the verification fingerprint, passing the unlocking authentication and carrying out the unlocking operation; otherwise, the unlocking authentication is not passed, the first unlocking authentication unit can also output authentication failure information, and the unlocking authentication is carried out again according to the touch information obtained by ultrasonic scanning.

And the second unlocking authentication unit is used for unlocking authentication according to the fingerprint information when the security authentication level is a second type level.

If the safety authentication level is a second type level, fingerprint information of a user finger is extracted when the user performs touch operation, whether the fingerprint information is consistent with preset fingerprint information or not is directly compared, if yes, unlocking authentication is passed, and unlocking operation can be performed; otherwise, the unlocking authentication is not passed, the second unlocking authentication unit can also output authentication failure information, and the unlocking authentication is carried out again according to the touch information obtained by ultrasonic scanning.

And the third unlocking authentication unit is used for obtaining a password sequence according to the touch position and the preset display screen touch coordinate when the safety authentication level is a third type level, and unlocking authentication is carried out according to the password sequence.

If the safety authentication level is a third type level, acquiring a password sequence input by a user according to the obtained touch position and the touch coordinates of the display screen, comparing whether the password sequence is consistent with a preset verification password or not, if so, passing the unlocking authentication, and performing unlocking operation; otherwise, the unlocking authentication is not passed, the third unlocking authentication unit can also output authentication failure information, and the unlocking authentication is carried out again according to the touch information obtained by ultrasonic scanning.

In this embodiment, the first type level, the second type level, and the third type level correspond to three security authentication levels, i.e., a high security authentication level, a medium security authentication level, and a low security authentication level, respectively. When the security level is high, fingerprint and password unlocking authentication is carried out simultaneously; when the security level is middle, fingerprint unlocking authentication is carried out; and when the security level is low, carrying out password unlocking authentication. And determining the corresponding safety authentication level according to the screen locking state of the touch terminal, so that the unlocking authentication mode is adjusted, and the touch operation safety of the touch terminal is improved.

Thetouch scanning module 150 is configured to perform an unlocking operation on the touch terminal after the unlocking authentication passes, perform ultrasonic full-screen scanning on the display screen of the touch terminal, and acquire a touch coordinate of the display screen according to the returned ultrasonic wave.

And after the unlocking authentication is passed, unlocking the touch terminal, then carrying out full-screen scanning on the display screen of the touch terminal, and acquiring the touch coordinate of the display screen according to the returned ultrasonic wave. Taking finger operation as an example, when a user finger clicks a display screen underwater, reflected waves at a click position are different from other positions, and the difference is regarded as one click operation, so that a corresponding function is realized.

Thetouch processing module 160 is configured to control the display screen to perform a corresponding touch operation according to the touch coordinate.

After the touch coordinates of the user on the display screen are acquired, corresponding touch operations such as opening an application program, turning pages and the like are performed on the display screen according to the touch coordinates, and the ultrasonic touch operation of the terminal is achieved.

According to the touch device of the touch terminal, when the touch terminal is located in a liquid environment and is in a screen locking state, touch information is obtained through ultrasonic scanning, and unlocking authentication is carried out by combining with a safety authentication level. And after the unlocking authentication is passed, unlocking the touch terminal, performing ultrasonic full-screen scanning on a display screen of the touch terminal to obtain touch coordinates, and controlling the display screen to perform corresponding touch operation according to the touch coordinates. The unlocking and touch operation are carried out through ultrasonic scanning, the touch terminal can be used for touch operation when the capacitive touch screen is in a liquid environment, and the problem that the traditional capacitive touch screen cannot be used in liquid environments such as underwater and the like is solved.

In one embodiment, as shown in FIG. 4, the apparatus further comprises anenvironment detection module 110.

Theenvironment detection module 110 is configured to detect a security authentication level corresponding to the screen locking state of the touch terminal when the touch terminal is in the screen locking state, perform ultrasonic time-sharing scanning on the touch terminal before performing ultrasonic scanning on the touch terminal, and detect whether the touch terminal is in a liquid environment; if so, stopping ultrasonic time-sharing scanning, controlling the unlockingscanning module 120 to detect a security authentication level corresponding to the screen locking state of the touch terminal when the touch terminal is located in a liquid environment and is in the screen locking state, and performing ultrasonic scanning on the touch terminal; if not, the touch terminal is subjected to ultrasonic time-sharing scanning again, and whether the touch terminal is in a liquid environment or not is detected.

The ultrasonic time-sharing scanning refers to transmitting ultrasonic waves according to preset frequency to scan the touch terminal, and the specific value of the preset frequency is not unique. Because the amplitudes of the reflected ultrasonic signals in the air environment and the liquid environment are different and have great difference, the ultrasonic device can be used for carrying out ultrasonic time-sharing scanning on the touch terminal according to the preset frequency, the amplitude of the induction signal is obtained by calculating according to the ultrasonic signal returned by the time-sharing scanning, and the touch terminal can be determined to be in the air environment or the liquid environment according to the amplitude of the induction signal.

In this embodiment, the environment where the touch terminal is located is detected in a time-sharing scanning manner, so that power consumption can be reduced. When the touch terminal is detected to be in a liquid environment and in a screen locking state, ultrasonic scanning is performed, and fingerprint unlocking and touch operation are performed by using ultrasonic waves in the liquid environment. Just utilize ultrasonic scanning to carry out fingerprint unblock and touch-control operation when touch-control terminal is in liquid environment, if the touch-control terminal need not start ultrasonic fingerprint unblock and touch-control operation when not being in liquid environment, the energy is saved reduces the consumption, reduces use cost. It can be understood that when the touch terminal is in a non-liquid environment, the unlocking and touch operations can be performed in a capacitive touch screen manner.

In one embodiment, with continued reference to FIG. 4, the apparatus may further include ascan control module 170.

Thescan control module 170 is configured to perform an unlocking operation on the touch terminal after the unlocking authentication of thetouch scanning module 150 passes, perform ultrasonic full-screen scanning on a display screen of the touch terminal, detect whether the touch terminal is in a liquid environment, and control theenvironment detection module 110 to perform ultrasonic time-sharing scanning on the touch terminal again when it is detected that the touch terminal is not in the liquid environment, so as to detect whether the touch terminal is in the liquid environment.

When the touch terminal is not in the liquid environment, the ultrasonic scanning touch is stopped, and the ultrasonic time-sharing scanning is performed again, so that the energy can be saved, the power consumption can be reduced, and the use cost can be reduced.

In one embodiment, the touch terminal comprises a display screen, an ultrasonic device and a control device, wherein the control device is connected with the ultrasonic device.

The control device is used for detecting the type of the screen locking state of the touch terminal and the security authentication level corresponding to the screen locking state when the touch terminal is located in a liquid environment and is in the screen locking state, controlling the ultrasonic device to perform ultrasonic scanning on the touch terminal, receiving an ultrasonic sensing signal generated by the ultrasonic device according to returned ultrasonic waves, and acquiring touch information corresponding to the security authentication level from the ultrasonic sensing signal; according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information; after the unlocking authentication is passed, unlocking operation is carried out on the touch terminal, the ultrasonic device is controlled to carry out ultrasonic full-screen scanning on the display screen of the touch terminal, and the touch coordinate of the display screen is obtained according to the returned ultrasonic wave received by the ultrasonic device; and controlling the display screen to perform corresponding touch operation according to the touch coordinates.

Specifically, the touch terminal is in the screen locking state for a plurality of reasons, and the types of the screen locking state correspond to different reasons. The ultrasonic device includes an ultrasonic transmission/reception array including a transmitter and a receiver, and the ultrasonic transmission/reception array acquires information such as a touch position by using reflection of ultrasonic waves irradiated to a touch object. The piezoelectric element is an essential component forming a super transmitter and a receiver, and is formed by arranging a piezoelectric material on a silicon thin film with a microcavity at the lower part, and can be vibrated by applying a voltage, and a voltage change caused by the vibration can be obtained at the time of signal reading. The ultrasonic device may scan the display area of the touch terminal, or may simultaneously scan the display area and the non-display area of the touch terminal. The touch information specifically comprises touch positions and/or fingerprint information, and the specific types of the touch information required by unlocking authentication are different according to different security authentication levels. Similarly, the unlocking authentication mode is correspondingly different according to different set security authentication levels. And after the unlocking authentication is passed, the control device unlocks the touch terminal, then controls the ultrasonic device to perform full-screen scanning on the display screen of the touch terminal, and acquires the touch coordinate of the display screen according to the returned ultrasonic wave. And performing corresponding touch operation on the display screen according to the touch coordinate, such as opening an application program, turning pages and the like, so as to realize the ultrasonic touch operation of the terminal.

According to the touch terminal, unlocking and touch operation are carried out through ultrasonic scanning, the touch terminal can be used for touch operation when the touch terminal is in a liquid environment, and the problem that a traditional capacitive touch screen cannot be used in liquid environments such as underwater and the like is solved.

In one embodiment, the ultrasonic device comprises a first fingerprint module and a second fingerprint module, wherein the first fingerprint module and the second fingerprint module are connected with the control device, the first fingerprint module is arranged in a display area of the touch terminal and used for performing ultrasonic scanning on a display screen, and the second fingerprint module is arranged in a non-display area of the touch terminal and used for performing ultrasonic scanning on the non-display area of the touch terminal.

Utilize first fingerprint module to carry out ultrasonic scanning to the display screen, generate ultrasonic signal according to the ultrasonic wave that returns and send to controlling means to supply controlling means to acquire user's touch-control position and touch-control fingerprint at the display screen. And carrying out ultrasonic scanning on the non-display area of the touch terminal by using the second fingerprint module, generating an ultrasonic signal according to the returned ultrasonic wave, and sending the ultrasonic signal to the control device so that the control device can obtain the touch fingerprint of the user in the non-display area. All set up the fingerprint module through display area and the non-display area at touch terminal and carry out ultrasonic scanning, improved the comprehensiveness of acquireing touch information.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

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

carrying out ultrasonic time-sharing scanning on a touch terminal, and detecting whether the touch terminal is in a liquid environment or not;

if the touch terminal is in the screen locking state, stopping ultrasonic time-sharing scanning, detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state, and carrying out ultrasonic scanning on the touch terminal; the reasons for the touch terminal to be in the screen locking state comprise various reasons, and the type of the screen locking state corresponds to different reasons;

generating an ultrasonic sensing signal according to the returned ultrasonic wave, and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal; the touch information comprises touch position and/or fingerprint information;

according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information;

after the unlocking authentication is passed, unlocking operation is carried out on the touch terminal, ultrasonic full-screen scanning is carried out on a display screen of the touch terminal, and touch coordinates of the display screen are obtained according to returned ultrasonic waves;

and controlling the display screen to perform corresponding touch operation according to the touch coordinates.

2. The touch method of the touch terminal according to claim 1, wherein the detecting the type of the lock screen state of the touch terminal and the security authentication level corresponding to the lock screen state comprises the following steps:

when the type of the screen locking state of the touch terminal is detected to be the screen locking state automatically after the touch terminal is started, the corresponding security authentication grade is the first type grade;

when the screen locking state of the touch terminal is detected to be entered into according to the received screen locking instruction, the corresponding security authentication level is a second type level;

and when the type of the screen locking state of the touch terminal is detected to be that the screen locking state is entered when an operation instruction is not received within a preset time length, the corresponding safety authentication level is a third type level.

3. The touch method of the touch terminal according to claim 2, wherein the first type class is higher in priority than the second type class, and the second type class is higher in priority than the third type class.

4. The touch method of the touch terminal according to claim 1, wherein the step of performing unlocking authentication by using the touch position and/or the fingerprint information according to the security authentication level comprises the steps of:

when the security authentication level is a first type level, obtaining a password sequence according to the touch position and a preset display screen touch coordinate, and performing unlocking authentication according to the password sequence and the fingerprint information;

when the security authentication level is a second type level, unlocking authentication is carried out according to the fingerprint information;

and when the safety authentication level is a third type level, obtaining a password sequence according to the touch position and a preset display screen touch coordinate, and performing unlocking authentication according to the password sequence.

5. The touch method of the touch terminal according to claim 1, wherein before the step of detecting the type of the lock screen state of the touch terminal and the security authentication level corresponding to the lock screen state and performing the ultrasonic scanning on the touch terminal, the method further comprises the following steps:

and carrying out ultrasonic time-sharing scanning on the touch terminal, and returning to the step of carrying out ultrasonic time-sharing scanning on the touch terminal and detecting whether the touch terminal is in the liquid environment or not when the touch terminal is not in the liquid environment.

6. The touch method of the touch terminal according to claim 5, wherein after the step of performing the unlocking operation on the touch terminal after the unlocking authentication is passed and performing the ultrasonic full-screen scanning on the display screen of the touch terminal, the method further comprises the following steps:

and detecting whether the touch terminal is in a liquid environment, and returning to the step of performing ultrasonic time-sharing scanning on the touch terminal and detecting whether the touch terminal is in the liquid environment when the touch terminal is not detected to be in the liquid environment.

7. A touch device of a touch terminal, comprising:

the environment detection module is used for performing ultrasonic time-sharing scanning on the touch terminal, detecting whether the touch terminal is in a liquid environment or not, stopping the ultrasonic time-sharing scanning if the touch terminal is in a screen locking state, detecting a security authentication level corresponding to the screen locking state of the touch terminal, and performing ultrasonic scanning on the touch terminal;

the unlocking scanning module is used for detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state when the touch terminal is located in a liquid environment and is in the screen locking state, and carrying out ultrasonic scanning on the touch terminal; the touch terminal is in a screen locking state for various reasons, and the type of the screen locking state corresponds to different reasons;

the information extraction module is used for generating an ultrasonic sensing signal according to the returned ultrasonic waves and acquiring touch information corresponding to the safety certification level from the ultrasonic sensing signal; the touch information comprises touch position and/or fingerprint information;

the unlocking authentication module is used for carrying out unlocking authentication by utilizing the touch position and/or the fingerprint information according to the safety authentication level;

the touch scanning module is used for unlocking the touch terminal after the unlocking authentication is passed, carrying out ultrasonic full-screen scanning on a display screen of the touch terminal and acquiring a touch coordinate of the display screen according to returned ultrasonic waves;

and the touch processing module is used for controlling the display screen to perform corresponding touch operation according to the touch coordinate.

8. The touch device of the touch terminal of claim 7, further comprising:

and the environment detection module is used for carrying out ultrasonic time-sharing scanning on the touch terminal, and returning to the step of carrying out ultrasonic time-sharing scanning on the touch terminal and detecting whether the touch terminal is in the liquid environment or not when the touch terminal is not in the liquid environment.

9. A touch terminal is characterized by comprising a display screen, an ultrasonic device and a control device, wherein the control device is connected with the ultrasonic device,

when the touch terminal is subjected to ultrasonic time-sharing scanning, detecting whether the touch terminal is in a liquid environment or not, if so, stopping the ultrasonic time-sharing scanning, detecting the type of the screen locking state of the touch terminal and the safety certification level corresponding to the screen locking state, and carrying out the ultrasonic scanning on the touch terminal by using the control device; receiving an ultrasonic induction signal generated by the ultrasonic device according to returned ultrasonic waves, and acquiring touch information corresponding to the security authentication level from the ultrasonic induction signal; the touch information comprises touch position and/or fingerprint information; according to the safety authentication level, unlocking authentication is carried out by utilizing the touch position and/or the fingerprint information; after the unlocking authentication is passed, unlocking the touch terminal, controlling the ultrasonic device to perform ultrasonic full-screen scanning on the display screen of the touch terminal, and acquiring the touch coordinate of the display screen according to the returned ultrasonic wave received by the ultrasonic device; controlling the display screen to perform corresponding touch operation according to the touch coordinate; the reasons for the touch terminal to be in the screen locking state include multiple kinds, and the type of the screen locking state corresponds to different reasons.

10. The touch terminal of claim 9, wherein the ultrasonic device comprises a first fingerprint module and a second fingerprint module connected to the control device,

the first fingerprint module is arranged in a display area of the touch terminal and used for carrying out ultrasonic scanning on the display screen, and the second fingerprint module is arranged in a non-display area of the touch terminal and used for carrying out ultrasonic scanning on the non-display area of the touch terminal.

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