CN112188370A - Mobile terminal and sound production control method thereof - Google Patents
Mobile terminal and sound production control method thereof Download PDFInfo
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- CN112188370A CN112188370A CN201910596729.2A CN201910596729A CN112188370A CN 112188370 A CN112188370 A CN 112188370A CN 201910596729 A CN201910596729 A CN 201910596729A CN 112188370 A CN112188370 A CN 112188370A
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- 238000000195 production control method Methods 0.000 title claims abstract description 8
- 230000005284 excitation Effects 0.000 claims abstract description 168
- 238000004519 manufacturing process Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 38
- 230000005236 sound signal Effects 0.000 claims description 23
- 230000001629 suppression Effects 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 13
- 230000003313 weakening effect Effects 0.000 claims description 7
- 230000002441 reversible effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000638 stimulation Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 210000000554 iris Anatomy 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
A mobile terminal and a sound production control method of the mobile terminal are provided, wherein the mobile terminal comprises a sound production surface and an excitation device, the excitation device comprises a first magnet and an electromagnetic assembly fixed on the sound production surface, and the electromagnetic assembly can receive an excitation signal and drive the sound production surface to produce sound through vibration; when the mobile terminal comprises two sounding surfaces or a distinguishing area for sounding, the mobile terminal can output a stimulation signal to a listening surface or a stimulation device of a listening area. The method and the device can solve the problem that the sounding surface needs to be distinguished or the up-and-down direction of the mobile phone needs to be distinguished.
Description
Technical Field
The present invention relates to a mobile terminal, and more particularly, to a mobile terminal and a sound emission control method of the mobile terminal.
Background
The overall screen concept is increasingly developed in electronic consumer goods such as mobile phones, flat panels and the like in recent two years, with the popularization of the overall screen of the mobile phone, various manufacturers strive to enlarge the screen occupation ratio of the mobile phone, and part of the mobile phones already reach more than 90 percent of the screen occupation ratio, but the traditional devices are gradually difficult to place, especially the positions of traditional receivers are gradually hidden or even cancelled; at present, the traditional telephone receiver is mainly a moving-coil receiver, an additional hole needs to be formed in a sound production surface, and the problem of forming a hole in the position of a screen telephone receiver is not solved.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a mobile terminal, which comprises a body and a sound production surface, wherein the body is used for bearing the sound production surface, and the mobile terminal is characterized by further comprising an excitation device, and the excitation device comprises: a first magnet fixed to the body; and the electromagnetic assembly is fixed on the sound production surface, receives an excitation signal and drives the sound production surface to vibrate and produce sound under the interaction of the first magnet. By adopting the excitation device, the mobile terminal of the embodiment can solve the problem of low-frequency loss in sound in other screen sounding technologies, and improves the user satisfaction.
In an exemplary embodiment, the sound emitting surface includes a first sound emitting surface and a second sound emitting surface disposed at both sides of the body; the mobile terminal comprises a plurality of excitation devices, and electromagnetic assemblies of part of the excitation devices are fixed on the first sound-emitting surface and are used for exciting the first sound-emitting surface to vibrate and emit sound; and electromagnetic components of other exciting devices are fixed on the second sound-producing surface and are used for exciting the second sound-producing surface to produce sound in a vibration mode. The two sound emitting surfaces of the mobile terminal can realize vibration sound emission.
In an exemplary embodiment, the sound-emitting surface comprises a plurality of areas, and each area is provided with the excitation device, so that the vibration sound emission in different areas can be realized.
The embodiment of the invention also provides a sound production control method of the mobile terminal, wherein the mobile terminal comprises two sound production surfaces and respective excitation devices of the two sound production surfaces, and the method comprises the following steps: determining a receiving surface through detection, wherein the receiving surface is a sound producing surface used for receiving by a current user in the two sound producing surfaces; and outputting the excitation signal to an excitation device of the listening surface so as to excite the listening surface to vibrate and sound. The method can select the listening surface used by the user from the two sounding surfaces to sound in a vibration mode, and the user does not need to distinguish the two sounding surfaces.
The embodiment of the invention also provides a sound production control method of the mobile terminal, the mobile terminal comprises a plurality of excitation devices, different excitation devices are arranged in different areas of the sound production surface to realize vibration sound production in different areas, and the method comprises the following steps: determining a current listening area of the sounding surface through detection; and the excitation device outputs the excitation signal to the current sounding region. The method can realize the regional sound production of the sound production surface without distinguishing the placing direction of the mobile terminal by the user.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a mobile terminal according to an exemplary embodiment of the present invention, in which an excitation device is provided on a sound emitting surface;
fig. 2 is a block diagram of a control system for implementing selection of a sound emitting surface in a mobile terminal with double-sided sound emission according to an exemplary embodiment of the present invention;
fig. 3 is a mobile terminal according to an exemplary embodiment of the present invention, in which two back-to-back excitation devices are disposed on two sound emitting surfaces;
FIG. 4 is a flow diagram of a voicing control method for implementing voicing face selection in accordance with an exemplary embodiment of the invention;
fig. 5 is a flowchart of a control process of a mobile terminal with double-sided sound emission to implement sound emission surface selection and vibration suppression on a non-listening surface according to an exemplary embodiment of the present invention;
fig. 6 is a block diagram of a control system for implementing a partitioned voice production in a partitioned voice production mobile terminal according to an exemplary embodiment of the present invention;
fig. 7 is a mobile terminal according to an exemplary embodiment of the present invention, in which two actuators are disposed in different areas of a sound emission surface;
FIG. 8 is a flowchart of an utterance control method for implementing a partitioned utterance of an exemplary embodiment of the invention;
fig. 9 is a mobile terminal according to an exemplary embodiment of the present invention, in which two back-to-back actuators are disposed in upper and lower areas of two sound emitting surfaces, respectively;
fig. 10 is a flowchart of a control procedure for realizing selection of a sound emission surface and a sound emission area and suppression of vibration of a non-listening surface when the mobile terminal in fig. 9 is a mobile terminal.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
In order to pursue an extremely "screen occupation ratio", the embodiment of the present invention employs a screen sound emission technique in which a sound emission surface such as a screen is driven by an actuator, and the sound emission surface is used as a vibration body to generate sound waves by vibration and then transmitted to human ears.
An exemplary embodiment of the present invention provides a mobile terminal, such as a mobile phone, a tablet, etc. This mobile terminal includes body and sound production face, the body is used for bearing the sound production face still includes excitation device, excitation device includes:
a first magnet fixed to the body;
fix the electromagnetic component on the sound production face, the electromagnetic component accept the excitation signal with first magnet interact drives the sound production face vibration sound production.
The excitation signal may be an alternating current signal generated from a sound signal. After the electromagnetic assembly is connected with the excitation signal, an alternating magnetic field can be generated, so that the acting force between the electromagnetic assembly and the first magnet is changed, and the electromagnetic assembly drives the fixedly connected sound production surface to vibrate and produce sound. In one example, the electromagnetic assembly may be spaced apart from the first magnet, i.e., have a gap therebetween, and an end of the electromagnetic assembly remote from the first magnet is fixedly connected to a sound emitting surface.
In one example, the electromagnetic assembly includes: the second magnet is fixed on the sounding surface, and the coil is sleeved outside the second magnet and can be connected with the excitation signal. In one example, the second magnet and the first magnet are arranged at intervals, the second magnet and the sound-emitting surface can be fixed in a sticking mode, one end of the second magnet is a plane, and the end is directly stuck to the surface of the inner side of the sound-emitting surface.
In one example, the second magnet and the first magnet are both permanent magnets, and the polarities of the two opposite ends of the second magnet and the first magnet are the same or opposite. In another example, the second magnet may also be a soft magnet. Under the condition that the second magnet and the first magnet are both permanent magnets, basically constant suction force or repulsion force can be generated between the second magnet and the first magnet, after alternating current is added into the coil, a variable force can be superposed on the basis of the suction force or the repulsion force, and the permanent magnet is used to be less prone to demagnetization under specific conditions (such as high temperature) compared with a soft magnet; the amplitude is high, the vibration amplitude of the sounding surface is large, and the sound is large.
The excitation device of the embodiment can solve the problem of low-frequency and medium-frequency loss of sound when other types of excitation devices are used, and improves the satisfaction degree of users.
An exemplary embodiment of the present invention is shown in fig. 1, a mobile terminal includes a sound plane 1 and a body 3, in this example, the sound plane 1 includes a screen, and may also include a middle board and other members, which may have different designs. The body 3 includes other components than the sound emission surface 1, including a center frame, a printed circuit board, a rear case 31, and the like. The excitation device comprises a first magnet 21, a second magnet 22 and a coil 23, wherein the first magnet 21 and the second magnet 22 are both permanent magnets such as magnets, and the shapes of the magnets include, but are not limited to, circular, rectangular, T-shaped, U-shaped and the like. The second magnet 22 is adhered to the inner side of the sound emitting surface 1, and the second magnet 22 penetrates through the middle of the coil 23, or the coil 23 is sleeved outside the second magnet 22. The coil 23 may also be adhered to the sound emitting surface 1. The first magnet 21 is fixed to the body 3, such as a printed circuit board, a center frame or other structural member. A closed acoustic chamber is formed between the first magnet 21 and the rear housing 31. In this example, the polarities of the opposite ends of the first magnet 21 and the second magnet 22 are the same, and a repulsive force is generated between the two. After the excitation signal is input, the coil 23 generates an alternating magnetic field near the second magnet 22, a repulsive alternating acting force is correspondingly generated between the first magnet 21 and the second magnet 22, the second magnet 22 and the coil 23 are pushed to vibrate, the second magnet 22 and the coil 23 drive the sound production surface 1 to vibrate, and then the sound production of the sound production surface 1 is realized.
At present, a double-sided screen is also a development trend of the mobile phone, and the mobile phone with two screens both being full screens can be called a double-sided full-screen mobile phone. The double-sided screen mobile phone has two screens, and when a user holds the double-sided screen mobile phone to make a call, the user needs to distinguish which side is the sounding surface, and the situation that normal answering is affected by mistakenly recognizing the sounding surface is often caused.
An exemplary embodiment of the present invention provides a mobile terminal, such as a dual-full-screen mobile phone, which can realize selective sound generation of two sound generation surfaces. The sounding surface comprises a first sounding surface and a second sounding surface which are arranged on two sides of the body; the mobile terminal comprises a plurality of excitation devices, and electromagnetic assemblies of part of the excitation devices are fixed on the first sound-emitting surface as the inner side and are used for exciting the first sound-emitting surface to vibrate and emit sound; and the electromagnetic assemblies of the other exciting devices are fixed on the second sound-producing surface as the inner side and are used for exciting the second sound-producing surface to produce sound in a vibration mode. In one example, the excitation devices are grouped in pairs, two excitation devices in the same group are arranged back to back, and two excitation devices in the same group can share one first magnet, or two first magnets of two excitation devices in the same group can be attracted together. Two excitation devices are structurally compact when placed back-to-back, but this is not necessary, and in another example, a plurality of said excitation devices may be staggered, for example, from bottom to bottom 1 st and 3 rd excitation devices for exciting a first sound emission surface and 2 nd and 4 th excitation devices for exciting a second sound emission surface. In another example, when two excitation devices in the same group are arranged back to back, a magnetic shielding layer can be added between the two first magnets so as to prevent the alternating magnetic field from influencing the second magnet of the other sound production surface when one sound production surface produces sound, and suppress the vibration of the other sound production surface, and at the moment, the sound production of the other sound production surface can be suppressed without using a mode of outputting a suppression signal to the excitation device of the other sound production surface.
The mobile terminal with the double-sided screen can excite the sound receiving surface to vibrate and sound, and a user can hear sound on any sound emitting surface. However, the non-listening surface may also emit sound due to the influence of the alternating magnetic field, and the emitted sound may be heard by other people. Thus, in one example of this embodiment, a system for suppressing non-listening surface sounds is also provided, as shown in fig. 2, the system comprising: a first controller 10, a first switching circuit 20 and a first detection module 30, wherein:
the first detection module 30 is configured to: and determining a listening surface by detection, and sending a determination result to the first controller 10, where the listening surface is a sound surface used by a current user to listen to in the first sound surface and the second sound surface. The first detection module may detect the sound through biometric recognition, for example, if the face of the user is found to face the first sound emitting surface, the first sound emitting surface is determined to be a listening surface, and the second sound emitting surface is determined to be a non-listening surface.
The first controller 10 is arranged to: and an excitation device for controlling the first switch circuit 10 to output an excitation signal generated based on the audio signal to the listening surface. The first controller 10 may send a control signal to the first switching circuit 20 to implement the above-described control. When the excitation signal is output to the excitation device of the listening surface, the excitation signal can be output to part or all of the excitation devices of the listening surface, when the sounding surface is provided with a plurality of excitation devices and sounds in different areas, the excitation signal can be output to part of the excitation devices of the listening surface, otherwise, the excitation signal is output to all the excitation devices of the listening surface.
The first controller may be implemented by a processing device having a logical operation function, such as a digital signal processor. The first switching circuit 20 is schematically represented by a switching diagram, which may be a logic switching circuit, may be implemented using a corresponding switching chip or integrated with other circuitry in a chip.
When a plurality of excitation devices are in a group in pairs and are arranged back to back, when one excitation device excites a sounding surface to vibrate and sound, the alternating magnetic field of the excitation device can also influence the other excitation device which is in the same group with the excitation device, so that the first magnet and the second magnet of the other excitation device generate variable force to a certain extent, and the other sounding surface is driven to vibrate and sound. To avoid this, in one example, the first controller is further configured to: when the excitation signal is output to the excitation device of the listening surface, or when the excitation signal is output to the excitation device of the listening surface and a set condition is satisfied, executing the following processing: and controlling the first switch circuit to output a suppression signal to an excitation device of a non-listening surface so as to suppress vibration sounding of the non-listening surface, wherein the non-listening surface is the other sounding surface except the listening surface in the first sounding surface and the second sounding surface, the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of reversal and weakening. The inversion and weakening of the stimulus signal may be performed before or after the signal passes through the first switching circuit.
In one example, the output of the suppression signal may be conditioned to be output when the first controller outputs the excitation signal to the excitation device of the listening surface. In another example, the mobile terminal further includes a control unit configured to output the excitation signal to an excitation device of the listening surface and to output the suppression signal when a setting condition is satisfied, in which:
a second detection module attached to the first sound emitting surface and configured to: detecting a vibration signal or a sound signal of the first sound emitting surface, and sending a detection result to the first controller;
the third detection module attached to the second sound production surface is set as follows: detecting a vibration signal or a sound signal of the second sounding surface, and sending a detection result to the first controller;
the first controller determines that a setting condition is satisfied, including: and judging that the set condition is met according to the detection result of the detection module (which may be a second detection module or a third detection module) attached to the non-listening surface, such as the fact that the magnitude of a vibration signal or a sound signal of the non-listening surface exceeds a corresponding threshold value. At this time, the first switch circuit is controlled to output the suppression signal to an excitation device of a non-listening surface so as to suppress the vibration and sound production of the non-listening surface,
an exemplary embodiment of the present invention provides a dual-screen mobile terminal, as shown in fig. 3, which includes a body 3, a first sound emission surface 1, and a second sound emission surface 1'. The first sound emitting surface 1 and the second sound emitting surface 1' include, but are not limited to, screens. Although the first sound emission surface 1 and the second sound emission surface 1' in this example each include a screen (and may also include a structural member such as a middle plate), in another example, one of the sound emission surfaces may include a screen, and the other sound emission surface may be another structural member.
The double-sided screen mobile terminal comprises a first excitation means 2 and a second excitation means 2' arranged back to back. That is, the first magnet 21 of the first excitation device 2 and the first magnet 21 'of the second excitation device 2' are the same magnet, but may be different first magnets. The second magnet 22 and the coil 23 of the first excitation device 2 are attached to the inner side of the first sound emission surface 1, and the second magnet 22 of the first excitation device 2 penetrates the coil 23. The second magnet 22 ' and the coil 23 ' of the second excitation device 2 ' are attached to the inner side of the second sound emission surface 1 ', and the second magnet 22 ' of the second excitation device 2 ' penetrates the coil 23 ' in the middle. The mobile terminal further has two sensors (i.e. the above detection modules, which can be implemented by using devices existing on the screen, such as a camera, etc., not shown in the figure) disposed on both the first sound emitting surface 1 and the second sound emitting surface 1'. One of the sensors is used for determining the current answering surface, namely the sound producing surface used by the user through biological recognition (such as fingerprints, faces, irises and the like); the other sensor is used for detecting the magnitude of the vibration signal or the sound signal of the sound production surface. The mobile terminal includes a controller, a switching circuit, and the like (not shown in the figure). The connections between the sensors, the controller and the switching circuit can be seen in fig. 2.
An exemplary embodiment of the present invention further provides a sound emission control method of a mobile terminal, where the mobile terminal includes two sound emission surfaces, and each of the two sound emission surfaces is provided with an excitation device, as shown in fig. 4, the method includes:
step 110, determining a listening surface through detection, wherein the listening surface is a sound emitting surface used for listening by a current user in the two sound emitting surfaces;
and 120, outputting an excitation signal to an excitation device of the listening surface to excite the listening surface to vibrate and sound.
In this context, if an electromagnetic component of an excitation device is fixed to a sound-emitting surface, the excitation device is said to be the excitation device of the sound-emitting surface, and the sound-emitting surface is said to be provided with the excitation device.
In one example, when the excitation signal is output to the excitation device of the listening surface, or when the excitation signal is output to the excitation device of the listening surface and a setting condition is satisfied, the method further comprises: and outputting a suppression signal to an excitation device of a non-listening surface to suppress vibration sounding of the non-listening surface, wherein the non-listening surface is the other sounding surface except the listening surface in the first sounding surface and the second sounding surface, and the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of reverse direction and weakening. In one example, the setting condition is satisfied, including: and if the vibration signal or the sound signal of the non-answering surface is detected to exceed the corresponding threshold value, judging that the set condition is met. The excitation means of the non-listening surface is less vibrating and therefore, in addition to the reversal, some weakening of the excitation signal, such as a reduction in its amplitude, can be performed.
The sound production control method of the embodiment of the invention can be applied to mobile terminals with two sound production surfaces, such as double-sided mobile terminals and the like of the embodiment of the invention. Such as, but not limited to, the dual-sided mobile terminal shown in fig. 3. It can also be used in mobile terminals that use other excitation means to realize sound emission from the sound emission surface.
The following figure illustrates a sound emission control process of a dual-screen mobile terminal in conjunction with the mobile terminal shown in fig. 3. Please refer to fig. 5. When a user answers or dials a call using a mobile terminal, it is first determined by biometric identification (fingerprint, face, iris, etc.) which sounding surface the user uses to answer, assuming that the user uses the first sounding surface 1, then an alternating current is applied to the coil 23 of the first excitation device 2, the alternating magnetic field generated by the coil 23 generates a varying force on the first magnet 21 of the first excitation device 2 and the second magnet 22 ' of the second excitation device 2 ', respectively, the first magnet 21 of the first excitation device 2 and the second magnet 22 ' of the second excitation device 2 ' also generate a reaction force on the coil 23 and the second magnet 22 of the first excitation device 2, respectively, the interaction of the forces causes the first sound emitting surface 1 and the second sound emitting surface 1 ' to vibrate together, and the first sound-emitting surface 1 vibrates violently, and the second sound-emitting surface 1' vibrates weakly, so that the user has the risk of information leakage when using the first sound-emitting surface 1 to make or receive calls.
In this example, a sensor attached to the second sound emission surface 1 'can detect the magnitude of the vibration signal of the second sound emission surface 1', and the magnitude of the vibration signal can be represented by the amplitude, frequency, and the like of the vibration signal. In another example, the size of the sound signal can also be directly detected, and can be expressed by loudness, and the vibration signal and the sound signal of the same sound production surface are related. The mobile terminal system sets a corresponding threshold value inside, the threshold value corresponds to the maximum sound allowed when the second sound emitting surface 1' is used as a non-listening surface, such as a sound signal is detected, a loudness threshold value can be set, such as a vibration signal is detected, and an amplitude threshold value and/or a frequency threshold value of vibration can be set. If the detected magnitude of the vibration signal or the sound signal of the second sound-emitting surface 1 'does not exceed the corresponding threshold value, which represents that the risk of communication information leakage is small, the suppression signal can not be output to the excitation device of the second sound-emitting surface 1'; if the value is larger than the corresponding threshold value, which represents that the risk of communication information leakage is large, the suppression signal is output to the coil 23 'of the second excitation device 2'.
In one example, the excitation signal is inverted and attenuated to obtain the suppression signal. For example, a set of filter coefficients a is generated according to a difference between the magnitude of the detected signal and a corresponding threshold (the larger the difference, the larger the value of a may be), and the reverse signal S of the excitation signal is multiplied by aAObtaining the suppression signal alpha S after reverse and weakening treatmentAAnd the vibration component generated by the suppression signal input coil 23 ' is opposite to the direction of the vibration component generated by the second sound-emitting surface 1 ' after the coil 23 of the first excitation device 2 is fed with the excitation signal, so that the vibration of the second sound-emitting surface 1 ' can be weakened or eliminated, and the risk of information leakage during communication is reduced or weakened. In the answering process, the sensor on the second sound-emitting surface 1 'can continuously detect the vibration signal or the sound signal of the second sound-emitting surface 1', continuously compares corresponding threshold values, and the process is repeated.
According to the scheme of the embodiment, when a user uses a mobile terminal with a double-sided screen, such as a double-sided full-screen mobile phone, the user does not need to distinguish which side is a sounding side, and information leakage can be avoided.
When the mobile phone uses the receiver to sound, the user can see the receiver, so that the accurate sound-emitting position can be known. However, when the screen sounding technology is used in the full screen, the user cannot know the accurate sounding position, and the user can normally listen to the phone only by distinguishing the up-down direction of the mobile phone.
An exemplary embodiment of the present invention provides a mobile terminal. The sound-emanating surface comprises a plurality of areas, for example comprising an upper area and a lower area, each area being provided with said exciting means. In this example, the sound emitting surface of the mobile terminal includes a plurality of the excitation devices, and the electromagnetic assembly of the excitation device provided in each area is fixedly connected to the sound emitting surface of the area.
In one example, the sound emitting surface is divided into an upper area or a lower area, as shown in fig. 6, the mobile terminal further includes a second controller 40, a second switch circuit 50 and a fourth detection module 60, wherein:
the fourth detection module 60 is configured to: the current listening area of the sounding surface is determined by detection, and the determined result is sent to the second controller 40. In one example, the current listening area is an upper area or a lower area of the sound emitting surface;
the second controller 40 is configured to: controlling the second switch circuit 50 to output the excitation signal generated according to the sound signal to the excitation means of the current listening area. The second controller 40 may send a control signal to the second switching circuit 50 to implement the above-described control.
The second controller may be implemented by a processing device having a logical operation function, such as a digital signal processor. The second switching circuit may be implemented with a logic switching device or the like. In one example, the fourth detection module may be implemented using a sensor for gesture detection, such as a gravity sensor in the mobile terminal. In a default vertical placement state, the upper area is the current listening area. And if the mobile terminal is detected to be in a default vertical placement state, determining that the current listening area is an upper area, and if the mobile terminal is detected to be in a reverse placement state, determining that the current listening area is a lower area. In another example, the fourth detection module may also implement detection by biometric technology, which is not limited by the present invention.
In one example, for a full screen cell phone, the screen may be divided into an upper region and a lower region by a line connecting the midpoints of the two long sides of the screen. At least one excitation device is located in each zone. The mobile terminal with single-sided sound emission shown in fig. 7 comprises a body 3 and a sound emission surface 1 having two excitation devices respectively installed at an upper region and a lower region of the sound emission surface. The excitation device adopts the excitation device of the above embodiment of the present invention, and the details are not repeated here. The mobile terminal is provided with a gravity sensor (not shown). The gesture of the mobile phone can be determined according to the detection data of the gravity sensor, whether the user uses the upper area to answer or the lower area to answer is judged, if the user uses the upper area to answer, the excitation signal is output to the excitation device of the upper area, and if the user uses the lower area to answer, the excitation signal is output to the excitation device of the lower area, so that the electromagnetic assembly of the excitation device of the corresponding area vibrates, and the sounding surface is driven to vibrate and sound.
An exemplary embodiment of the present invention further provides a sound emission control method for a mobile terminal, where the mobile terminal includes a plurality of excitation devices, and different excitation devices are disposed in different areas of a sound emission surface of the mobile terminal to implement vibration sound emission in different areas, as shown in fig. 8, and the method includes:
step 210, determining a current listening area in a plurality of areas of the sounding surface through detection;
step 220, outputting the excitation signal to the excitation device of the current listening area.
In an example, the mobile terminal is a mobile terminal that generates sound by vibrating in different areas according to the above embodiments of the present invention, the mobile terminal may be a mobile terminal such as a full-screen mobile phone, the sound generation surface includes a screen, and the screen may be divided into an upper area and a lower area. The user can realize normal answering without distinguishing the upper part and the lower part of the mobile phone.
An exemplary embodiment of the present invention also provides a mobile terminal, as shown in fig. 9, a first sound emitting surface 1 and a second sound emitting surface 1' are respectively disposed at both sides of a body 3 of the mobile terminal. Each sound emitting surface is divided into an upper area and a lower area. The upper area comprises a group of two excitation devices arranged back to back, and electromagnetic components of the two excitation devices are respectively and fixedly connected to the inner sides of the two sound production surfaces. A set of two excitation devices arranged back-to-back is also included in the lower region. The specific structure of the excitation device is as described in the above embodiments. Two excitation devices of the same group share a first magnet, which is fixed to a body such as a hub. The specific structure of the excitation device is described in the above embodiments and will not be described in detail here. At least one of the two sounding surfaces is a screen, and the other surface can be a screen or other structural members.
The two sound emitting surfaces of the mobile terminal have respective excitation devices, and different areas of the same sound emitting surface are also provided with respective excitation devices, so that the selection of the sound emitting surfaces can be realized, and the sound emitting in different areas can also be realized.
The mobile terminal of the present embodiment also has a detection module, a switch circuit and a controller required for implementing sound emitting surface selection and regional sound emission, as can be seen from the above embodiments. It should be noted that, for a mobile terminal having two sound emitting surfaces, each of which emits sound in different areas, the first switch circuit and the second switch circuit may physically use the same switch module. The first controller and the second controller may also use the same device, such as a DSP.
For the mobile terminal of this embodiment, taking a dual full-screen as an example, the sound production control of the sub-area and the sound production control of the automatic recognition listening surface of the above embodiments exist simultaneously, please refer to fig. 10, and the following briefly describes the control process. When a user answers or dials the circuit, the first sounding surface is determined to be the answering surface through the biological recognition device, the upper area of the first sounding surface is determined to be the current answering area through the gravity sensor, the excitation signal is output to the excitation device of the upper area of the first sounding surface, and at the moment, the second sounding surface can vibrate along with the excitation signal to a certain degree. In this case, only the upper region of the second sound emission surface may be detected, or both the upper region and the lower region of the second sound emission surface may be detected. And judging whether the magnitude of the detected vibration signal or sound signal is greater than a corresponding threshold value, and if not, ending. If the magnitude of the vibration signal or the sound signal is larger than the corresponding threshold value, only the suppression signal can be output to the exciting device of the upper area of the second sound-emitting surface. If the magnitudes of the vibration signals or the sound signals of the upper area and the lower area of the second sound-emitting surface are both larger than the set threshold value, then the suppression signals are simultaneously output to the excitation devices of the upper area and the lower area of the second sound-emitting surface, and the two suppression signals can be different, for example, different filter coefficients are adopted. And then, continuously detecting the magnitude of the vibration signal or the sound signal of the second sound production surface and continuously carrying out subsequent processing.
The embodiment can solve the problem that privacy is revealed by double-sided sounding and can also solve the problem that a user needs to distinguish the pain points in the up-and-down direction of the mobile phone.
In the description of the present disclosure, the terms "mounted," "connected," "fixed," and the like, unless expressly stated otherwise or inferred from the context, are intended to be broadly construed, e.g., "connected" may be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments disclosed in the present disclosure are described above, the descriptions are only for the convenience of understanding the present disclosure, and are not intended to limit the present disclosure. It will be understood by those skilled in the art of the present disclosure that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure is to be limited only by the terms of the appended claims.
Claims (16)
1. The utility model provides a mobile terminal, includes body and sound production face, the body is used for bearing the sound production face, its characterized in that still includes the excitation device, the excitation device includes:
a first magnet fixed to the body;
fix the electromagnetic component on the sound production face, the electromagnetic component accept the excitation signal with first magnet interact drives the sound production face vibration sound production.
2. The mobile terminal of claim 1, wherein:
the electromagnetic assembly includes: the coil can be connected with the excitation signal, and the polarities of two opposite ends of the first magnet and the first magnet are the same or opposite.
3. The mobile terminal of claim 1, wherein:
the sounding surface comprises a first sounding surface and a second sounding surface which are arranged on two sides of the body;
the mobile terminal comprises a plurality of excitation devices, and electromagnetic assemblies of part of the excitation devices are fixed on the first sound-emitting surface and are used for exciting the first sound-emitting surface to vibrate and emit sound; and electromagnetic components of other exciting devices are fixed on the second sound-producing surface and are used for exciting the second sound-producing surface to produce sound in a vibration mode.
4. A mobile terminal according to claim 3, characterized in that:
the mobile terminal further comprises a first controller, a first switch circuit and a first detection module, wherein:
the first detection module is configured to: detecting and determining a receiving surface, and sending a determined result to the first controller, wherein the receiving surface is a sound emitting surface used for receiving by a current user in the first sound emitting surface and the second sound emitting surface;
the first controller is configured to: and an excitation device for controlling the first switch circuit to output an excitation signal generated based on a sound signal to the listening surface.
5. The mobile terminal of claim 4, wherein:
the first controller is further configured to: when the excitation signal is output to the excitation device of the listening surface, or when the excitation signal is output to the excitation device of the listening surface and a set condition is satisfied, executing the following processing: and controlling the first switch circuit to output a suppression signal to an excitation device of a non-listening surface so as to suppress vibration sounding of the non-listening surface, wherein the non-listening surface is the other sounding surface except the listening surface in the first sounding surface and the second sounding surface, the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of reversal and weakening.
6. The mobile terminal of claim 5, wherein:
the mobile terminal further includes:
a second detection module attached to the first sound emitting surface and configured to: detecting a vibration signal or a sound signal of the first sound emitting surface, and sending a detection result to the first controller;
the third detection module attached to the second sound production surface is set as follows: detecting a vibration signal or a sound signal of the second sounding surface, and sending a detection result to the first controller;
the first controller determines that a setting condition is satisfied, including: and according to the detection result of the detection module attached to the non-answering surface, judging that the set condition is met if the vibration signal or the sound signal of the non-answering surface exceeds the corresponding threshold value.
7. A mobile terminal according to claim 3, characterized in that:
the excitation devices are grouped in pairs, two excitation devices in the same group are arranged back to back, the two excitation devices in the same group share one first magnet, or two first magnets used by the two excitation devices in the same group are attracted together.
8. A mobile terminal according to claim 3, characterized in that:
the excitation devices are grouped in pairs, the two excitation devices in the same group are arranged back to back, and a magnetic shielding layer is arranged between the two first magnets used by the two excitation devices in the same group.
9. The mobile terminal according to any of claims 2 to 8, characterized in that:
the sound emitting surface includes a plurality of areas, each of which is provided with the excitation device.
10. The mobile terminal of claim 9, wherein:
the mobile terminal further comprises a second controller, a second switch circuit and a fourth detection module, wherein:
the fourth detection module is configured to: detecting and determining a current listening area of the sounding surface, and sending a determined result to the second controller;
the second controller is configured to: and the excitation device is used for controlling the second switch circuit to output the excitation signal generated according to the sound signal to the current listening area.
11. A sound production control method of a mobile terminal, wherein the mobile terminal comprises two sound production surfaces, and the two sound production surfaces are both provided with an excitation device, and the method comprises the following steps:
determining a receiving surface through detection, wherein the receiving surface is a sound producing surface used for receiving by a current user in the two sound producing surfaces;
and outputting an excitation signal to an excitation device of the listening surface so as to excite the listening surface to vibrate and sound.
12. The sound emission control method according to claim 11, characterized in that:
when the excitation signal is output to the excitation device of the listening surface, or when the excitation signal is output to the excitation device of the listening surface and a setting condition is satisfied, the method further includes: and outputting a suppression signal to an excitation device of a non-listening surface to suppress vibration sounding of the non-listening surface, wherein the non-listening surface is the other sounding surface except the listening surface in the first sounding surface and the second sounding surface, and the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of reverse direction and weakening.
13. The sound emission control method according to claim 11, characterized in that:
the set condition is satisfied, including: and if the vibration signal or the sound signal of the non-answering surface is detected to exceed the corresponding threshold value, judging that the set condition is met.
14. The sound emission control method according to any one of claims 11 to 13, characterized in that:
the mobile terminal is according to any of claims 3 to 8.
15. A sound production control method of a mobile terminal is provided, wherein different areas of a sound production surface of the mobile terminal are provided with different excitation devices to realize regional vibration sound production, and the method comprises the following steps:
determining a current listening area of the sounding surface through detection;
and the exciting device outputs an exciting signal to the current listening area.
16. The sound emission control method according to claim 15, characterized in that:
the mobile terminal is a mobile terminal according to claim 9 or 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910596729.2A CN112188370A (en) | 2019-07-02 | 2019-07-02 | Mobile terminal and sound production control method thereof |
| PCT/CN2020/096531 WO2021000730A1 (en) | 2019-07-02 | 2020-06-17 | Mobile terminal, and sound production control method for mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910596729.2A CN112188370A (en) | 2019-07-02 | 2019-07-02 | Mobile terminal and sound production control method thereof |
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| CN112188370A true CN112188370A (en) | 2021-01-05 |
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| CN201910596729.2A Pending CN112188370A (en) | 2019-07-02 | 2019-07-02 | Mobile terminal and sound production control method thereof |
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| WO (1) | WO2021000730A1 (en) |
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| WO2021000730A1 (en) | 2021-01-07 |
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