CN111163197A - Mobile terminal equipment and screen sounding method thereof - Google Patents

Abstract

The invention provides a mobile terminal device and a screen sounding method thereof, wherein the device comprises a middle frame, a main screen and an auxiliary screen which are respectively positioned at two sides of the middle frame, and the device also comprises: the main control chip is fixed on the middle frame; the main power amplifier PA and the auxiliary power amplifier PA are respectively connected with the main control chip; the main coil is connected with the main PA and positioned between the middle frame and the main screen, the auxiliary coil is connected with the auxiliary PA and positioned between the middle frame and the auxiliary screen, and the magnet penetrates through the middle frame and is respectively matched with the main coil and the auxiliary coil; the main control chip is used for determining a driving signal according to the audio signal and enabling the main PA and the auxiliary PA at the same time, the main coil is electrified through the main PA, and the auxiliary coil is electrified through the auxiliary PA, so that the main screen and the auxiliary screen are driven to generate vibration in opposite directions to generate sound respectively. The mobile terminal device and the screen sounding method thereof provided by the invention solve the problems of serious sound leakage and inapplicability to double-sided screen mobile terminal devices in the existing screen sounding method.

Description

Mobile terminal equipment and screen sounding method thereof

Technical Field

The invention relates to the field of screen sounding of mobile terminal equipment, in particular to mobile terminal equipment and a screen sounding method thereof.

Background

The intelligent terminal device needs a receiver to sound to realize a call function, and the receiver is constructed by opening a hole on the device in the traditional mode. With the development of the times, users have more and more requirements on the maximization of the screen occupation ratio, namely the whole screen, while the traditional receiver occupies a large space on the screen, and in order to reduce the frame range of the screen, the opening on the screen can be reduced or even cancelled.

The best method for solving the problem is a screen sounding method, and the current screen sounding method comprises two methods, namely a cantilever piezoelectric ceramic method and a screen exciter method: the cantilever piezoelectric ceramic method adopts a ceramic receiver to replace a traditional receiver, drives a middle frame of the equipment to vibrate, the middle frame vibrates to drive a screen to vibrate to realize sound production, and the transmitted sound has undefined directivity, and has the problems of serious sound leakage and poor low-frequency effect; the screen exciter method uses the exciter to replace piezoelectric ceramics, drives the screen to vibrate to realize sound transmission, has more definite sound directivity, but the screen vibration can drive the equipment to vibrate, and has the problem of larger sound leakage.

The cantilever piezoelectric ceramics and the screen exciter adopt the vibration sound production principle, have the problem of sound leakage, and are sound production methods for single-sided screen terminal equipment. Therefore, the existing screen sounding method has the problems of serious sound leakage and inapplicability to double-sided screen mobile terminal equipment.

Disclosure of Invention

The invention provides a mobile terminal device and a screen sounding method thereof, which are used for solving the problems that the existing screen sounding method has serious sound leakage and is not suitable for a double-sided screen mobile terminal device.

According to a first aspect of the embodiments of the present invention, there is provided a mobile terminal device, including a middle frame, and a main screen and an auxiliary screen respectively located at two sides of the middle frame, optionally, further including:

the main control chip is fixed on the middle frame;

the main power amplifier PA and the auxiliary power amplifier PA are respectively connected with the main control chip;

the main coil is connected with the main PA and positioned between the middle frame and the main screen, the auxiliary coil is connected with the auxiliary PA and positioned between the middle frame and the auxiliary screen, and the magnet penetrates through the middle frame and is respectively matched with the main coil and the auxiliary coil;

the main control chip is used for determining a driving signal according to an audio signal and enabling the main PA and the auxiliary PA at the same time, the main PA is used for electrifying the main coil, and the auxiliary PA is used for electrifying the auxiliary coil so as to respectively drive the main screen and the auxiliary screen to generate vibration in opposite directions to generate sound.

Optionally, the lengths and the number of turns of the main coil and the auxiliary coil are such that when the main coil and the auxiliary coil receive the same driving signal, the main screen and the auxiliary screen generate vibrations with opposite directions and the same amplitude.

Optionally, the ratio of the power amplification factor a2 of the auxiliary PA to the power amplification factor a1 of the main PA is a, the apparatus further comprising:

the noise acquisition module is connected with the main control chip and is used for acquiring environmental noise;

and the main control chip is used for determining A corresponding to the volume of the acquired environmental noise according to the corresponding relation between the volume of different environmental noises and A, and controlling A2 of the auxiliary PA according to A and A1.

Optionally, the ratio of the power amplification factor a2 of the auxiliary PA to the power amplification factor a1 of the main PA is a, the apparatus further comprising:

the noise acquisition module is connected with the main control chip and is used for acquiring environmental noise;

the main control chip is used for determining A corresponding to the volume of the environmental noise under the system volume level of the audio signal according to the corresponding relation between the volume of different environmental noises and A under different system volume levels, and controlling A2 of the auxiliary PA according to A and A1.

Optionally, the apparatus further comprises:

the support is fixed on the middle frame, the support is provided with a hollow part penetrating through the middle frame, the magnet penetrates through and is fixed in the hollow part, a set distance is reserved between the magnet and the main screen and between the magnet and the auxiliary screen, the main coil is fixed on the main screen and opposite to the magnet, and the auxiliary coil is fixed on the auxiliary screen and opposite to the magnet.

Optionally, the apparatus further comprises:

the support is fixed on the middle frame, the support is provided with a hollow part penetrating through the middle frame, the magnet penetrates through the hollow part and is fixed with the main screen and the auxiliary screen respectively, the main coil surrounds the part of the magnet between the main screen and the middle frame, and the auxiliary coil surrounds the part of the magnet between the auxiliary screen and the middle frame.

Optionally, the main control chip is configured to determine a corresponding a according to the volume of the collected environmental noise at intervals of a preset interval time, and control a2 of the auxiliary PA according to the a and a 1; or

The main control chip is used for determining a corresponding A according to the volume of the collected environmental noise and the system volume level of the audio signal at intervals of preset interval time, and controlling the A2 of the auxiliary PA according to the A and the A1.

Optionally, the correspondence between the different environmental noise volumes and a is a one-to-one correspondence that each environmental noise volume corresponds to one a, and the different environmental noise volumes correspond to different as;

under different system volume levels, the corresponding relation between different environmental noise volumes and A is the one-to-one corresponding relation that under each system volume level, each environmental noise volume corresponds to A, and different environmental noise volumes correspond to different A; or

The corresponding relation between the different environmental noise volumes and A is that the environmental noise volumes are divided into M intervals, the environmental noise volume of each interval corresponds to one A, and the environmental noise volumes of different intervals correspond to the interval corresponding relation of different A;

under different system volume levels, the corresponding relation between different environmental noise volumes and A is that under each system volume level, the environmental noise volumes are divided into M intervals, the environmental noise volumes of each interval correspond to one A, the environmental noise volumes of different intervals correspond to the interval corresponding relation of different A, wherein M is a preset positive integer.

According to a second aspect of the embodiments of the present invention, there is provided a method for sounding a screen of a mobile terminal device, including:

acquiring the volume of environmental noise, and determining a driving signal according to an audio signal and the volume of the environmental noise;

and enabling the main PA and the auxiliary PA simultaneously according to the driving signal, electrifying the main coil through the main PA, electrifying the auxiliary coil through the auxiliary PA, and respectively driving the main screen and the auxiliary screen to generate vibration in opposite directions to sound.

According to a third aspect of embodiments of the present invention, there is provided a double-sided screen sound emitting apparatus including:

the signal driving module is used for acquiring the volume of environmental noise and determining a driving signal according to an audio signal and the volume of the environmental noise;

and the screen sounding module is used for enabling the main PA and the auxiliary PA simultaneously according to the driving signal, electrifying the main coil through the main PA, electrifying the auxiliary coil through the auxiliary PA and respectively driving the main screen and the auxiliary screen to generate vibration in opposite directions to sound.

According to a fourth aspect of the embodiments of the present invention, there is provided a chip, where the chip is coupled with a memory in a user equipment, so that the chip invokes program instructions stored in the memory when running, thereby implementing the above aspects of the embodiments of the present application and any method that may be designed according to the aspects.

According to a fifth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium storing program instructions which, when executed on a computer, cause the computer to perform the method of any of the possible designs to which the above aspects and aspects relate.

According to a sixth aspect of the embodiments of the present invention, there is provided a computer program product, which, when run on an electronic device, causes the electronic device to perform a method of implementing the above aspects of the embodiments of the present application and any possible design related to the aspects.

The mobile terminal device and the screen sounding method thereof provided by the invention have the following beneficial effects:

according to the mobile terminal equipment and the screen sounding method thereof, the main PA and the auxiliary PA are respectively arranged corresponding to the main screen and the auxiliary screen of the double-sided screen mobile terminal equipment, and a driving signal which is in the same direction and has a small amplitude is applied to the auxiliary screen through the auxiliary PA while the main PA drives the main screen to sound. The screen sound production method has the advantages that the screen sound production method generates micro vibration in the direction opposite to the main screen, so that sound leakage is reduced, and the problems that the existing screen sound production method is serious in sound leakage and not suitable for double-sided screen mobile terminal equipment are solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a frame of a screen sound generating apparatus in a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a frame of a screen sound generating apparatus in a mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a composition framework of a mobile terminal device provided in an embodiment of the present invention;

fig. 4 is a schematic diagram of a composition framework of a mobile terminal device provided in an embodiment of the present invention;

fig. 5 is a schematic diagram of a method for sounding a screen of a mobile terminal device according to an embodiment of the present invention;

fig. 6a is a schematic diagram illustrating a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention;

fig. 6b is a schematic diagram illustrating a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention;

fig. 6c is a schematic diagram illustrating a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention;

fig. 6d is a schematic diagram illustrating a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a testing system for determining the value of the amplification factor A according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a hardware driving scheme for a screen sound of a mobile terminal device according to an embodiment of the present invention;

fig. 9 is a flowchart illustrating a method for sounding a screen of a mobile terminal device according to an embodiment of the present invention;

fig. 10 is a device diagram of a mobile terminal device provided in an embodiment of the present invention;

fig. 11 is a schematic device structure diagram of a mobile terminal device provided in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For convenience of understanding, terms referred to in the embodiments of the present invention are explained below:

1) PCB (Printed Circuit Board): the printed circuit board consists of an insulating bottom plate, a connecting lead and a bonding pad for assembling and welding electronic elements, is a carrier for electrically connecting the electronic elements and has double functions of a conductive circuit and the insulating bottom plate; the automatic plug-in mounting or mounting, automatic tin soldering, automatic detection and the like of the electronic components can be realized, the complex wiring can be replaced, the electrical connection among all components in the circuit can be realized, the assembly and welding work of electronic products is simplified, and the wiring workload in the traditional mode is reduced;

2) FPC (Flexible Printed Circuit, Flexible Circuit board): a printed circuit board having high reliability and excellent flexibility, which is made of a polyimide or polyester film as a base material; the printed circuit board can be bent at will and has the characteristics of high wiring density, light weight, thin thickness and good bending property;

3) PA (Power Amplifier ): the power amplifier is an amplifier which can generate the output of the maximum power to drive a certain load under the condition of a given distortion rate; the power amplifier converts the power of the power supply into current which changes according to the input signal by utilizing the current control action of the triode or the voltage control action of the field effect tube;

4) MIC (Microphone): known as a microphone, is an energy conversion device that converts a sound signal into an electrical signal, also called a microphone or a microphone.

Fig. 1 is a schematic diagram of a frame of a screen sound generating device in a current mobile terminal device. The scheme is a one-piece exciter scheme in a screen exciter sounding method. As shown in fig. 1, a current screen sounding device in a mobile terminal device mainly includes a screen 101, a middle frame 102 and an actuator 103, wherein the actuator mainly includes a magnet 104 and a coil 105. The exciter 103 is fixed on the middle frame, the coil 105 is electrified by enabling the power amplifier through a driving signal during sounding, the middle frame is driven to vibrate through electromagnetic induction of the coil 105 and the magnet 104, and the screen is driven to vibrate through the middle frame vibration, so that the screen sounding is realized. The method drives the screen to vibrate through the vibration of the middle frame, so that sound generated by the screen vibration is small, an ideal effect cannot be obtained, and meanwhile, the vibration of the middle frame drives the whole machine to vibrate, so that the problems of no directivity of vibration sound transmission, poor low-frequency effect and serious sound leakage exist.

Fig. 2 is a schematic diagram of a frame of a screen sound generating device in a mobile terminal device. This scheme is a two-piece separate exciter scheme in the screen exciter sounding approach. As shown in fig. 2, the screen sounding device in the current mobile terminal device mainly includes a screen 201, a middle frame 202 and an actuator 203, wherein the actuator mainly includes an upper magnet 204, a lower magnet 205 and a coil 206. The actuator 203 is of two-piece design, with an upper magnet 204 attached below the screen, a lower magnet 205 fixed to the center frame, the upper magnet 204 spaced from the lower magnet 205, and a coil 206 located between the upper magnet 204 and the lower magnet 205. When in sound production, the power amplifier is enabled to electrify the coil 206 through the driving signal, and the screen is directly driven to vibrate through the electromagnetic induction of the coil 206, the upper magnet 204 and the lower magnet 205, so that higher efficiency can be obtained, but the screen vibration still drives the whole machine to vibrate, and the problem of sound leakage still exists.

The two existing screen sound production methods are sound production methods applied to the single-screen mobile terminal equipment, and the problems of serious sound leakage exist in both the two existing screen sound production methods. Compared with a single-screen mobile terminal device, the double-screen mobile terminal device has one more screen, and the thickness is not required to be increased, if the two one-piece exciters are used in the existing method, the cost is directly doubled, the thickness of the whole device is influenced, the effective area of a PCB (printed circuit board) is reduced, and the design difficulty of the whole device is increased.

In view of this, the embodiment of the present invention provides a Mobile terminal device and a method for sounding a screen thereof, which are applied to a dual-screen Mobile terminal device, where the Mobile terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a Mobile station in a 5G Network or a subscription device in a Public Land Mobile Network (PLMN) Network evolved in the future, and the like.

Example 1

An embodiment of the present invention provides a mobile terminal device, as shown in fig. 3, the device includes a middle frame 301, and a main screen 302 and an auxiliary screen 303 respectively located at two sides of the middle frame, where positions of the main screen and the auxiliary screen may be interchanged, that is, both screens of the mobile terminal device may be used as the main screen or the auxiliary screen, and the main screen and the auxiliary screen divided in this embodiment are only used as an example. The main screen or the auxiliary screen can be preset, or the main screen or the auxiliary screen can be determined according to the actual working condition, namely, the screen needing sounding is determined as the main screen, and the other screen is determined as the auxiliary screen. For example, a screen for receiving a call may be determined as a main screen and another screen may be determined as an auxiliary screen at the time of a call.

The mobile terminal device further includes: a main control chip 304 fixed on the middle frame; a main power amplifier PA and an auxiliary power amplifier PA (not shown in the figure) respectively connected to the main control chip 304; a main coil 305 connected to the main PA and located between the middle frame and the main screen, an auxiliary coil 306 connected to the auxiliary PA and located between the middle frame and the auxiliary screen, and a magnet 307 penetrating the middle frame and respectively cooperating with the main coil and the auxiliary coil. The main control chip 304 may be located on a PCB board fixed to the middle frame as shown, and fixed to the middle frame through the PCB board, or may be located at other positions, and the positions are only illustrated as an example. The main power amplifier PA and the auxiliary power amplifier PA are not shown in the figure, and the positions of the main power amplifier PA and the auxiliary power amplifier PA can be determined according to actual situations, for example, the main power amplifier PA and the auxiliary power amplifier PA can be located on a PCB (Printed circuit board) board where the main control chip 304 is located, or other positions, and the present embodiment is not particularly limited.

The main control chip can be fixed on the middle frame by fixing the PCB where the main control chip is located on the middle frame; the main coil and the auxiliary coil are respectively connected with the main control chip through the FPC and the wiring terminal.

The main control chip 304 is configured to determine a driving signal according to the audio signal, enable the main PA and the auxiliary PA simultaneously, energize the main coil through the main PA, and energize the auxiliary coil through the auxiliary PA, so as to drive the main screen and the auxiliary screen to generate vibrations in opposite directions to generate sound.

The length and the number of turns of the main coil and the auxiliary coil are set to enable the main screen and the auxiliary screen to generate vibration with opposite directions and same amplitude when the main coil and the auxiliary coil receive the same driving signal.

In this embodiment, the amplification factor of the main PA is set to a1, the amplification factor of the auxiliary PA is set to a2, and the ratio of the power amplification factor a2 of the auxiliary PA to the power amplification factor a1 of the main PA is set to a, that is, a is a2/a 1.

The mobile terminal device further includes: and the noise acquisition module (not shown in the figure) is connected with the main control chip and is used for acquiring environmental noise. The noise acquisition module is not shown in the figure, and the position of the noise acquisition module can be determined according to actual conditions; the noise collection module is a device capable of collecting ambient noise, such as a microphone, and the like.

As a possible implementation manner, the main control chip is configured to determine a corresponding to the volume of the acquired environmental noise according to a preset corresponding relationship between different volumes of the environmental noise and a, and control a2 of the auxiliary PA according to a and a 1.

As another possible implementation manner, the main control chip is configured to determine a corresponding to the volume of the environmental noise at the system volume level of the audio signal according to a corresponding relationship between different volume levels of the environmental noise and a at different system volume levels, and control the a2 of the auxiliary PA according to the a and the a 1.

Wherein the power amplification factor a1 of the main PA is fixed at a certain system volume level.

The mobile terminal device further includes: a bracket 308 fixed to the middle frame 301, the bracket having a hollow portion penetrating through the middle frame, the magnet 307 penetrating through and fixed to the hollow portion with a set distance between the main screen and the sub screen, respectively, the main coil 305 fixed to the main screen and facing the magnet, and the sub coil 306 fixed to the sub screen and facing the magnet.

The bracket can be fixed on the middle frame through screws, and the magnet can be fixed on the hollow part of the bracket in a welding or sticking mode and the like and has a set distance with the main screen and the auxiliary screen respectively. The main coil and the auxiliary coil may be fixed to the main screen and the auxiliary screen, respectively, by liquid adhesive, or the like.

The main control chip 304 is specifically configured to determine a corresponding a according to the volume of the acquired environmental noise at preset time intervals, and control the a2 of the auxiliary PA according to the a and the a 1; or

The main control chip 304 is specifically configured to determine a corresponding a according to the volume of the acquired environmental noise and the system volume level of the audio signal at a preset interval time, and control the a2 of the auxiliary PA according to the a and the a 1.

The corresponding relation between the different environmental noise volumes and A is a one-to-one corresponding relation that each environmental noise volume corresponds to one A and each environmental noise volume corresponds to different A;

under the different system volume levels, the corresponding relation between the different environmental noise volumes and A is the one-to-one corresponding relation that under each system volume level, each environmental noise volume corresponds to A, and the different environmental noise volumes correspond to different A; or

The corresponding relation between the different environmental noise volumes and A is the interval corresponding relation that the environmental noise volumes are divided into M intervals, the environmental noise volume of each interval corresponds to one A, and the environmental noise volumes of different intervals correspond to different As;

under the different system volume levels, the corresponding relation between the different environmental noise volumes and the environmental noise volumes A is that under each system volume level, the environmental noise volumes are divided into M intervals, the environmental noise volumes of each interval correspond to one environmental noise volume A, the environmental noise volumes of different intervals correspond to the interval corresponding relation of different environmental noise volumes A, wherein M is a preset positive integer.

Referring to fig. 4, an embodiment of the present invention further provides a mobile terminal device, as shown in fig. 4, the device includes a middle frame 401, and a main screen 402 and an auxiliary screen 403 respectively located at two sides of the middle frame, and the mobile terminal further includes: a main control chip 404 fixed on the middle frame; a main power amplifier PA and an auxiliary power amplifier PA (not shown in the figure) respectively connected to the main control chip 404; a main coil 405 connected to the main PA and located between the middle frame and the main screen, an auxiliary coil 406 connected to the auxiliary PA and located between the middle frame and the auxiliary screen, and a magnet 407 penetrating through the middle frame and respectively cooperating with the main coil and the auxiliary coil. The mobile terminal device further includes: and the noise acquisition module (not shown in the figure) is connected with the main control chip and is used for acquiring environmental noise.

The mobile terminal device further includes: and the bracket 408 is fixed on the middle frame 401, the bracket is provided with a hollow part penetrating through the middle frame, the magnet penetrates through the hollow part and is fixed with the main screen and the auxiliary screen respectively, the main coil surrounds the position of the magnet between the main screen and the middle frame, and the auxiliary coil surrounds the position of the magnet between the auxiliary screen and the middle frame.

The bracket can be fixed on the middle frame through screws, and the magnet can be fixed on the hollow part of the bracket in a welding or sticking mode and the like and is respectively fixed with the main screen and the auxiliary screen. The main coil surrounds the magnet between the middle frame and the main screen and may be fixed to the main screen by means of liquid adhesive, and the auxiliary coil surrounds the magnet between the middle frame and the auxiliary screen and may be fixed to the auxiliary screen by means of liquid adhesive.

The configurations, functions, and connection manners of the middle frame 401, the main screen 402, the auxiliary screen 403, and the main control chip 404 are the same as those described in the above embodiments, and the configurations, functions, and connection manners of the main coil 405 and the auxiliary coil 406 are the same as those described in the above embodiments, and are not described in detail here.

According to the mobile terminal device and the screen sounding method thereof provided by the embodiment of the invention, the two PAs are enabled, and the driving signal with the same direction and smaller amplitude is applied to the auxiliary screen while the main screen is driven to work, so that the auxiliary screen generates opposite micro vibration, the sound leakage is reduced while the screen sounding is realized, and the problems that the sound leakage is more serious and the screen sounding method is not suitable for the double-sided screen mobile terminal device in the conventional screen sounding method are solved.

Example 2

Referring to fig. 5, a schematic diagram of a method for sounding a screen of a mobile terminal device according to an embodiment of the present invention is provided. As shown, the method includes:

step S501, acquiring the volume of environmental noise, and determining a driving signal according to an audio signal and the volume of the environmental noise;

and when the screen is determined to be used for sounding, determining the main screen and the auxiliary screen of the double-sided screen mobile terminal device according to the working condition of the screen. For example, when a call is made using a dual-screen mobile terminal device, the screen for answering the call is determined as the main screen, and the other screen is determined as the auxiliary screen. Determining that the PA corresponding to the main screen is a main PA, a coil driven by the main PA and corresponding to the main screen is a main coil, and the amplification factor of the main PA is A1; determining that the PA corresponding to the auxiliary screen is an auxiliary PA, a coil driven by the auxiliary PA and corresponding to the auxiliary screen is an auxiliary coil, and the amplification factor of the auxiliary PA is A2; and determining the amplification factor A to be A2/A1, wherein the larger the value A is, the larger the auxiliary screen vibration is, the smaller the leakage sound is, and conversely, the larger the leakage sound is. Under a certain system volume level, the amplification factor A1 of the main PA is fixed, so when a screen sounds, firstly, the amplification factor A corresponding to the currently acquired ambient noise volume is determined according to the corresponding relation between the preset amplification factor A and the ambient noise volume, and then, the amplification factor A2 of the auxiliary PA is determined according to the amplification factor A and the amplification factor A1 of the main PA, so that the driving signal of the auxiliary PA is obtained according to the A2. When the screen is used for sounding, the system volume level is timed according to a set period, the ambient noise volume is acquired, and the corresponding value A is updated, so that the driving signals of the main screen and the auxiliary screen are continuously updated, timely adjustment can be carried out when the ambient noise or the system volume is changed, and the best playing volume and sound leakage prevention effect are obtained.

As an optional implementation, the corresponding relationship between the different environmental noise volumes and a is preset. When the mobile terminal equipment is used in a noisy environment, the requirement on large volume is far greater than the requirement on sound leakage prevention, and the noise of the surrounding environment is more obvious when the noise is more noisy, so that the volume is mainly not influenced in the noisy environment, and the value of A can be set to be a small value or set to be zero, namely the problem of sound leakage is not considered; when the mobile terminal device is used in a quiet environment, the need for sound leakage prevention increases, and the value of a also needs to be set large. In summary, the ambient noise volume is a factor that needs to be considered in the present embodiment to solve the problem of sound leakage during screen sound generation, and therefore, the corresponding relationship between different ambient noise volumes and a may be preset.

As another optional implementation, the corresponding relationship between the different ambient noise volumes and a at different system volume levels is preset. On the basis of the above-mentioned determination of a from the ambient noise volume, the influence of the system volume level may be further considered. When the external noise is constant, the sound leakage of the equipment is reduced as the system volume level is reduced from high to low, and A is reduced to avoid affecting the normal use volume, so that the corresponding relation between different environmental noise volumes and A under different system volume levels can be preset.

The correspondence between the different environmental noise volumes and a is any one of the following correspondences:

1) each ambient noise volume corresponds to a one-to-one correspondence of A, and different ambient noise volumes correspond to different As.

Referring to fig. 6a, a schematic diagram of a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention is shown.

The ambient noise volume is monitored in advance according to the related art, different values a are set for different noise volumes, and the corresponding relationship represented by the graph shown in fig. 6a is obtained, wherein the abscissa of the graph is the ambient noise volume S, and the ordinate is the amplification factor a. As shown, each ambient noise volume corresponds to a unique a value.

2) Dividing the ambient noise volume into M intervals, wherein the ambient noise volume of each interval corresponds to an A, and the ambient noise volumes of different intervals correspond to the interval corresponding relation of different As;

referring to fig. 6b, a schematic diagram of a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention is shown.

In order to simplify the calculation, the ambient noise volume is divided into M sections, the ambient noise volume of each section corresponds to one ambient noise level, a value a is set for each ambient noise level, and the corresponding relationship represented by the graph shown in fig. 6b is obtained, where the abscissa of the graph is the ambient noise volume S, the values are different ambient noise volume level values, and the ordinate is the amplification coefficient a. The figure only illustrates the corresponding relationship among three system volume levels, namely, a system volume level 1, a system volume level 2 and a system volume level 3. Wherein, the system volume relation is that the system volume level is 1< the system volume level is 2< the system volume level is 3. As shown in the figure, different ambient noise volumes in each ambient noise interval correspond to a same value a, and the ambient noise volumes in different intervals correspond to different values a. As the volume level of the system increases, the value of a also increases relatively.

3) And under each system volume level, each environmental noise volume corresponds to one A, and different environmental noise volumes correspond to different A in a one-to-one correspondence relationship.

Referring to fig. 6c, a schematic diagram of a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention is shown.

Under different system volume levels, different values a are set for different noise volumes respectively, and a corresponding relationship represented by a graph shown in fig. 6c is obtained, wherein the abscissa of the graph is the ambient noise volume S, and the ordinate is the amplification factor a. As shown, each ambient noise volume corresponds to a unique a value at each system volume level.

4) And under each system volume level, dividing the ambient noise volume into M intervals, wherein the ambient noise volume of each interval corresponds to an A, and the ambient noise volumes of different intervals correspond to the interval corresponding relations of different As.

Referring to fig. 6d, it is a schematic diagram of a corresponding relationship between the ambient noise volume S and the amplification factor a according to an embodiment of the present invention.

In order to simplify the calculation, the ambient noise volume is divided into M sections at each system sound level, the ambient noise volume of each section corresponds to one ambient noise level, a value a is set for each ambient noise level, a corresponding relationship represented by a graph shown in fig. 6d is obtained, the abscissa of the graph in the graph is the ambient noise volume S, values are taken as different ambient noise volume level values, and the ordinate is an amplification coefficient a. The figure only illustrates the corresponding relationship among three system volume levels, namely, a system volume level 1, a system volume level 2 and a system volume level 3. Wherein, the system volume relation is that the system volume level is 1< the system volume level is 2< the system volume level is 3. As shown in the figure, different ambient noise volumes in each ambient noise interval correspond to a same value a, and the ambient noise volumes in different intervals correspond to different values a. As the volume level of the system increases, the value of a also increases relatively.

In summary, the value of a may be set according to two variables of the ambient noise volume and the system volume level, for example, in the above manner 4), the correspondence relationship is established, if there are 16 volume levels in the mobile terminal device, the correspondence relationship between the system volume level and the ambient noise volume and a is combined in M × 16, a correspondence table between a and the system volume level and the ambient noise volume may be preset, and real-time detection and control may be realized when a screen is used to generate sound, so as to obtain an optimal combination of the playback volume and the sound leakage prevention.

M is a preset positive integer. The graphs shown in fig. 6a to 6d are only used as trend examples of the above-mentioned corresponding relationship, and the actual value of the coordinate in the graphs can be determined according to actual detection.

In particular, the value of a is determined in the manner shown in fig. 7. Fig. 7 is a schematic diagram of a test system for determining an amplification factor a according to an embodiment of the present invention. When the A value is determined, the mobile terminal device can be fixed on a human-shaped clamp, fixed noise is played through a noise playback system at a set distance or a designated position away from the mobile terminal device, the volume of the noise can be adjusted, the vibration amplitude of the auxiliary screen is tested through a laser range finder at the set distance or the designated position away from the mobile terminal device, and a proper A value is determined by combining the system volume level, the vibration amplitude and the like.

The method is used for presetting the corresponding relation between different environmental noise volumes and A, when a screen is used for sounding, the ambient environmental noise volumes are collected at preset time intervals, the A value corresponding to the collected environmental noise volumes is determined according to the corresponding relation, and the amplification factor A2 of the corresponding auxiliary PA is determined according to the amplification factor of the main PA and the formula A which is A2/A1. Thus, the driving signals of the main screen and the auxiliary screen are determined according to the audio signal to be played and the A1 and A2 respectively.

Step S502, the main PA and the auxiliary PA are enabled simultaneously according to the driving signal, the main coil is electrified through the main PA, the auxiliary coil is electrified through the auxiliary PA, and the main screen and the auxiliary screen are respectively driven to generate vibration in opposite directions to generate sound.

After the amplification factor A2 of the auxiliary PA is determined through the steps, the determination signal of the auxiliary PA is determined according to A2 and the audio signal, the driving signal of the main PA is determined according to A1 and the audio signal, the corresponding main PA and the auxiliary PA are driven by the driving signal at the same time, the main coil is electrified through the main PA, the auxiliary coil is electrified through the auxiliary PA, the main coil and the auxiliary coil respectively act with the magnet to generate Ampere force, and the main screen and the auxiliary screen are respectively driven to generate vibration in opposite directions to generate sound.

According to the method for sounding the screen of the mobile terminal device provided by the embodiment of the invention, the amplification factor of the PA is determined according to the system volume level and the ambient noise volume, the amplification factor A2 of the auxiliary PA is determined according to the amplification factor A1 of the main PA and the amplification factor A2 of the auxiliary PA, the main PA and the auxiliary PA are respectively enabled according to A1 and A2, a driving signal with the same direction and smaller amplitude is applied to the auxiliary screen while the main screen is driven to work, and the driving signal is enabled to generate micro vibration in the opposite direction, so that the sound leakage is reduced while the sound sounding of the screen is realized, and the problems that the sound leakage is more serious and the method is not suitable for the double-sided mobile terminal device in the existing screen sounding method are solved.

Example 3

Referring to fig. 8, a schematic diagram of a hardware driving scheme for a screen sound generation of a mobile terminal device according to an embodiment of the present invention is provided. As shown in fig. 8, the mobile terminal device includes a processor CPU, a noise collection module, and a driving control module. The noise acquisition module acquires ambient noise volume through a noise detection device of the mobile terminal device, such as a microphone and the like, and sends the ambient noise volume to the CPU, and the CPU determines the value of A according to the received ambient noise volume, the acquired system volume level and the corresponding relation between the preset A and the ambient noise volume and the acquired system volume level. The value of A2 is determined from the values of A and A1, and the amplification factor of the secondary PA is controlled according to the value of A2. The driving control module respectively inputs driving currents into the main PA and the auxiliary PA, the driving currents are amplified by the main PA according to A1 and amplified by the auxiliary PA according to A2 and then respectively input into the main coil and the auxiliary coil, and the main screen and the auxiliary screen are determined to vibrate and sound.

Referring to fig. 9, a flow diagram of a method for sounding a screen of a mobile terminal device according to an embodiment of the present invention includes:

step S901, determining the current main screen and auxiliary screen of the mobile terminal equipment when the screen is used for sounding;

and when the screen is used for sounding, determining the main screen and the auxiliary screen of the double-sided screen mobile terminal device according to the working condition of the screen. Determining that the PA corresponding to the main screen is a main PA, a coil driven by the main PA and corresponding to the main screen is a main coil, and the amplification factor of the main PA is A1; and determining that the PA corresponding to the auxiliary screen is the auxiliary PA, the coil driven by the auxiliary PA and corresponding to the auxiliary screen is the auxiliary coil, the amplification factor of the auxiliary PA is A2, and the amplification factor A is A2/A1.

Step S902, obtaining a current system volume level K and a corresponding main PA amplification factor A1;

step S903, acquiring the volume S of the current environmental noise;

the method provided by the above embodiment obtains the current noise volume level, and is not described in detail here.

Step S904, searching the corresponding relation between the preset system volume level, the environmental noise volume and the amplification coefficient A, and determining the amplification coefficient A corresponding to the current system volume level K and the current environmental noise volume S;

the method provided by the above embodiment presets the corresponding relationship between the system volume level, the ambient noise volume and the amplification factor a, and is not described in detail here.

Step S905, determining an auxiliary PA amplification factor A2 according to the main PA amplification factor A1 and the amplification factor A;

the auxiliary PA amplification a2 is determined according to the formula a-a 2/a 1.

And step S906, enabling the main PA according to A1, enabling the auxiliary PA according to A2, electrifying the main coil through the main PA, electrifying the auxiliary coil through the auxiliary PA, and respectively driving the main screen and the auxiliary screen to generate vibration in opposite directions to generate sound.

After the amplification factor A2 of the auxiliary PA is determined through the steps, the determination signal of the auxiliary PA is determined according to A2 and the audio signal, the driving signal of the main PA is determined according to A1 and the audio signal, the corresponding main PA and the auxiliary PA are driven by the driving signal at the same time, the main coil is electrified through the main PA, the auxiliary coil is electrified through the auxiliary PA, the main coil and the auxiliary coil respectively act with the magnet to generate Ampere force, and the main screen and the auxiliary screen are respectively driven to generate vibration in opposite directions to generate sound.

Step 907, determining whether the set time interval is reached, if yes, executing step 902, otherwise, executing step 906.

And if the set time interval or the set period is reached, acquiring parameters such as the system volume level, the main PA amplification factor A1, the ambient noise volume and the like again, determining a new A2 according to the steps, and driving the main screen and the auxiliary screen to vibrate and sound according to the updated A1 and A2. The set time interval or the set period is determined according to the actual working condition, and may be set to 3s, 5s, etc., for example.

The method provided by the embodiment of the invention can continuously update the driving signals of the main screen and the auxiliary screen during sounding, ensures that the adjustment can be carried out in time when the environmental noise or the system volume is changed during sounding, and obtains the best playing volume and sound leakage prevention effect.

Example 4

The method for sounding through the screen of the mobile terminal device in the present invention is explained above, and the mobile terminal device is explained below.

Referring to fig. 10, an embodiment of the present invention provides a mobile terminal device, including:

the signal driving module 1001 is configured to acquire an ambient noise volume and determine a driving signal according to an audio signal and the ambient noise volume;

the screen sounding module 1002 is configured to enable the main PA and the auxiliary PA simultaneously according to the driving signal, and energize the main coil through the main PA and energize the auxiliary coil through the auxiliary PA to respectively drive the main screen and the auxiliary screen to generate vibrations in opposite directions to sound.

Referring to fig. 11, another embodiment of the mobile terminal device in the embodiment of the present application includes: radio Frequency (RF) circuit 1110, power supply 1120, processor 1130, memory 1140, input unit 1150, display unit 1160, camera 1170, communication interface 1180, and Wireless Fidelity (WiFi) module 1190.

Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 11 is not intended to be limiting, and that the terminal provided by the embodiments of the present application may include more or less components than those shown, or some components may be combined, or a different arrangement of components may be provided.

The following specifically describes each constituent element of the mobile terminal apparatus 1100 with reference to fig. 11:

the RF circuit 1110 may be used for receiving and transmitting data during a communication or conversation. Specifically, the RF circuit 1110, after receiving downlink data of a base station, sends the downlink data to the processor 1130 for processing; and in addition, sending the uplink data to be sent to the base station. Generally, the RF circuit 1110 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. The RF circuit 1110 may include some or all of the structure shown in fig. 3 in the embodiments described above.

In addition, the RF circuit 1110 can also communicate with a network and other terminals through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The WiFi technology belongs to a short-distance wireless transmission technology, and the mobile terminal device 1100 is connected to an Access Point (AP) through a WiFi module 1190, thereby implementing Access to a data network. The WiFi module 1190 may be used for receiving and transmitting data during communication.

The mobile terminal device 1100 may be physically connected to other terminals through the communication interface 1180. Optionally, the communication interface 1180 is connected to the communication interface of the other terminal through a cable, so as to implement data transmission between the mobile terminal device 1100 and the other terminal.

In the embodiment of the present application, the mobile terminal device 1100 is capable of implementing a communication service and sending information to other contacts, so that the mobile terminal device 1100 needs to have a data transmission function, that is, the mobile terminal device 1100 needs to include a communication module inside. Although fig. 11 shows communication modules such as the RF circuit 1110, the WiFi module 1190, and the communication interface 1180, it is understood that at least one of the above components or other communication modules (such as a bluetooth module) for implementing communication may be present in the mobile terminal device 1100 for data transmission.

For example, when the mobile terminal device 1100 is a mobile phone, the mobile terminal device 1100 may include the RF circuit 1110 and may further include the WiFi module 1190.

The memory 1140 may be used to store software programs and modules. The processor 1130 executes software programs and modules stored in the memory 1140 so as to perform various functional applications and data processing of the mobile terminal device 1100, and when the processor 1130 executes the program codes in the memory 1140, part or all of the processes in fig. 5 according to the embodiments of the present invention can be implemented.

Alternatively, the memory 1140 may mainly include a program storage area and a data storage area. Wherein, the storage program area can store an operating system, various application programs (such as communication application), various modules for WLAN connection, and the like; the storage data area may store data created according to the use of the terminal, and the like.

Further, the memory 1140 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1150 may be used to receive numeric or character information input by a user and generate key signal inputs related to user settings and function control of the mobile terminal apparatus 1100.

Optionally, the input unit 1150 may include a touch panel 1151 and other input terminals 1152.

The touch panel 1151, also called a touch screen, can collect touch operations of a user on or near the touch panel 1151 (for example, operations of a user on or near the touch panel 1151 by using any suitable object or accessory such as a finger or a stylus pen), and drive a corresponding connection device according to a preset program. Alternatively, the touch panel 1151 may include two portions, i.e., a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1130, and can receive and execute commands sent by the processor 1130. In addition, the touch panel 1151 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave.

Optionally, the other input terminals 1152 may include, but are not limited to, one or more of function keys (e.g., volume control keys, switch keys, etc.), a trackball, a joystick, and the like.

The display unit 1160 may be used to display information input by or provided to the user and various menus of the mobile terminal apparatus 1100. The display unit 1160 is a display system of the mobile terminal device 1100, and is used for presenting an interface to implement human-computer interaction.

The display unit 1160 may include a display panel 1161. Alternatively, the Display panel 1161 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.

Further, the touch panel 1151 can cover the display panel 1161, and when the touch panel 1151 detects a touch operation on or near the touch panel 1151, the touch panel is transmitted to the processor 1130 to determine the type of the touch event, and then the processor 1130 provides a corresponding visual output on the display panel 1161 according to the type of the touch event.

Although in fig. 11 the touch panel 1151 and the display panel 1161 are shown as two separate components to implement the input and output functions of the mobile terminal device 1100, in some embodiments, the touch panel 1151 and the display panel 1161 may be integrated to implement the input and output functions of the mobile terminal device 1100.

The processor 1130 is a control center of the smart terminal device 1100, connects various components using various interfaces and lines, and performs various functions of the mobile terminal device 1100 and processes data by operating or executing software programs and/or modules stored in the memory 1140 and calling data stored in the memory 1140, thereby implementing various services based on the terminal. The processor 1130 may be the main control chip in the above embodiments, or may be in other forms.

Optionally, the processor 1130 may include one or more processing units. Optionally, the processor 1130 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into the processor 1130.

The camera 1170 is configured to implement a shooting function of the mobile terminal device 1100, and shoot a picture or a video.

The mobile terminal device 1100 also includes a power supply 1120, such as a battery, for powering the various components. Optionally, the power supply 1120 may be logically connected to the processor 1130 through a power management system, so as to implement functions of managing charging, discharging, power consumption, and the like through the power management system.

Although not shown, the mobile terminal device 1100 may further include at least one sensor, an audio circuit, and the like, which will not be described herein.

An embodiment of the present invention further provides a computer-readable storage medium, which includes instructions, and when the computer-readable storage medium runs on a computer, the computer is enabled to execute the method for sounding a screen of a mobile terminal device provided in the foregoing embodiment.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The technical solutions provided by the present application are introduced in detail, and the present application applies specific examples to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. The utility model provides a mobile terminal equipment, includes the center, and is located the main screen and the supplementary screen of center both sides respectively, its characterized in that still includes:

the main control chip is fixed on the middle frame;

the main power amplifier PA and the auxiliary power amplifier PA are respectively connected with the main control chip;

the main coil is connected with the main PA and positioned between the middle frame and the main screen, the auxiliary coil is connected with the auxiliary PA and positioned between the middle frame and the auxiliary screen, and the magnet penetrates through the middle frame and is respectively matched with the main coil and the auxiliary coil;

the main control chip is used for determining a driving signal according to an audio signal and enabling the main PA and the auxiliary PA at the same time, the main PA is used for electrifying the main coil, and the auxiliary PA is used for electrifying the auxiliary coil so as to respectively drive the main screen and the auxiliary screen to generate vibration in opposite directions to generate sound.

2. Mobile terminal device according to claim 1,

the length and the number of turns of the main coil and the auxiliary coil enable the main screen and the auxiliary screen to generate vibration with opposite directions and same amplitude when the main coil and the auxiliary coil receive the same driving signal.

3. The mobile terminal device of claim 1, wherein the ratio of the power amplification factor a2 of the secondary PA to the power amplification factor a1 of the primary PA is a, further comprising:

the noise acquisition module is connected with the main control chip and is used for acquiring environmental noise;

and the main control chip is used for determining A corresponding to the volume of the acquired environmental noise according to the corresponding relation between the volume of different environmental noises and A, and controlling A2 of the auxiliary PA according to A and A1.

4. The mobile terminal device of claim 1, wherein the ratio of the power amplification factor a2 of the secondary PA to the power amplification factor a1 of the primary PA is a, further comprising:

the noise acquisition module is connected with the main control chip and is used for acquiring environmental noise;

the main control chip is used for determining A corresponding to the volume of the environmental noise under the system volume level of the audio signal according to the corresponding relation between the volume of different environmental noises and A under different system volume levels, and controlling A2 of the auxiliary PA according to A and A1.

5. The mobile terminal device according to claim 1, further comprising:

the support is fixed on the middle frame, the support is provided with a hollow part penetrating through the middle frame, the magnet penetrates through and is fixed in the hollow part, a set distance is reserved between the magnet and the main screen and between the magnet and the auxiliary screen, the main coil is fixed on the main screen and opposite to the magnet, and the auxiliary coil is fixed on the auxiliary screen and opposite to the magnet.

6. The mobile terminal device according to claim 1, further comprising:

the support is fixed on the middle frame, the support is provided with a hollow part penetrating through the middle frame, the magnet penetrates through the hollow part and is fixed with the main screen and the auxiliary screen respectively, the main coil surrounds the part of the magnet between the main screen and the middle frame, and the auxiliary coil surrounds the part of the magnet between the auxiliary screen and the middle frame.

7. Mobile terminal device according to claim 3 or 4,

the main control chip determines a corresponding A according to the volume of the collected environmental noise at intervals of preset interval time, and controls A2 of the auxiliary PA according to the A and A1; or

And the main control chip determines a corresponding A according to the volume of the acquired environmental noise and the system volume level of the audio signal at intervals of preset interval time, and controls the A2 of the auxiliary PA according to the A and the A1.

8. Mobile terminal device according to claim 3 or 4,

the corresponding relation between the different environmental noise volumes and A is a one-to-one corresponding relation that each environmental noise volume corresponds to one A and each environmental noise volume corresponds to different A;

under different system volume levels, the corresponding relation between different environmental noise volumes and A is the one-to-one corresponding relation that under each system volume level, each environmental noise volume corresponds to A, and different environmental noise volumes correspond to different A; or

The corresponding relation between the different environmental noise volumes and A is that the environmental noise volumes are divided into M intervals, the environmental noise volume of each interval corresponds to one A, and the environmental noise volumes of different intervals correspond to the interval corresponding relation of different A;

under different system volume levels, the corresponding relation between different environmental noise volumes and A is that under each system volume level, the environmental noise volumes are divided into M intervals, the environmental noise volumes of each interval correspond to one A, the environmental noise volumes of different intervals correspond to the interval corresponding relation of different A, wherein M is a preset positive integer.

9. A method for sounding a screen of a mobile terminal device is characterized by comprising the following steps:

acquiring the volume of environmental noise, and determining a driving signal according to an audio signal and the volume of the environmental noise;

and enabling the main PA and the auxiliary PA simultaneously according to the driving signal, electrifying the main coil through the main PA, electrifying the auxiliary coil through the auxiliary PA, and respectively driving the main screen and the auxiliary screen to generate vibration in opposite directions to sound.

10. A computer program medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the steps of the method as claimed in claim 9.

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