WO2015154282A1

WO2015154282A1 - Call device and switching method and device applied thereto

Info

Publication number: WO2015154282A1
Application number: PCT/CN2014/075078
Authority: WO
Inventors: 行晓亮
Original assignee: 华为终端有限公司
Priority date: 2014-04-10
Filing date: 2014-04-10
Publication date: 2015-10-15
Also published as: CN104380698A

Abstract

A call device and a switching method and device applied thereto. The method comprises: judging whether a preset switching signal is collected; when the preset switching signal is collected, switching a loudspeaker of the call device to an auxiliary microphone, so that the auxiliary microphone and a microphone that the call device has form double microphones. A loudspeaker of a call device can simultaneously possess two functions of electro-acoustic conversion and acoustic-electro conversion, and in a scenario of needing to use double microphones, the loudspeaker is switched to a microphone, which cooperates with a microphone that the call device itself has, to form the double microphones. In this way, not only can design requirements of a microphone and a loudspeaker that a call device itself has be lowered, but also a structure space inside the call device can be saved, thereby being favourable for realizing light and thin designs of a device.

Description

Call device and switching method and device applied to call device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a call device and a method and device for switching to a call device. Background technique

With the continuous development of information technology, mobile devices such as mobile phones have become an indispensable electronic device in people's daily lives. Speaker in the device, used to convert electrical signals to acoustic signals, used in hands-free calling, ringing tones, music playback, etc.; microphone (mic) in the talking device as a sounding device, used for Realize the conversion of acoustic signals to electrical signals, and use them in the case of hand-held calls, recordings, etc.

In the prior art, in order to improve the call clarity of the user and improve the noise reduction effect, the call device has a built-in 2 mic, the main mic is used to stably maintain a clear call, and the sub mic is used to eliminate the call noise.

The dual mic design also brings the following problems while improving the noise reduction effect of the call device:

1. Improved design requirements for the main mic and speaker. In order to ensure the noise reduction effect, the position of 畐ij mic should be kept away from the main mic as much as possible, so that the voice entering the secondary mic should be as small as possible; the sound sealing and directionality of the speaker should be as good as possible, and the sound of the speaker should be prevented from being transmitted to the secondary mic. Affects the noise reduction effect.

2. Take up the structural space inside the call device. The main mic and the sub-mic are two independent devices, and each peripheral circuit needs to be configured to perform the corresponding work, which limits the development of the device. Summary of the invention

The call device and the method and device for switching the call device in the embodiment of the present invention are used to simplify the internal structure of the dual-mic communication device, and realize the slim and light design of the device.

To this end, the embodiments of the present invention provide the following technical solutions:

In a first aspect, an embodiment of the present invention provides a handover method applied to a call device, where the method includes: Determining whether a preset switching signal is collected;

When the preset switching signal is collected, the speaker of the talking device is switched to a secondary microphone, so that the secondary microphone and the microphone of the talking device form a double microphone.

In a first possible implementation manner of the first aspect, the preset switching signal is a handheld call signal sent by the optical sensor, and the dual microphone is used to suppress ambient noise.

In a second possible implementation manner of the first aspect, the preset switching signal is an audio collecting signal, and the dual microphone is used for performing acoustic positioning.

In a third possible implementation manner of the first aspect, the preset switching signal is a picture acquisition signal, and the dual microphone is used for performing acoustic focusing.

With reference to the first aspect or the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the speaker is connected to the speaker path and the sub-mike channel through the analog switch respectively;

The switching the speaker of the calling device to the secondary microphone includes:

Controlling the analog switch to turn on a connection between the speaker and the sub-mike path, and disconnecting the speaker from the speaker path to form the sub-microphone to form the sub-mike .

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the manner in which the speaker and the secondary microphone path form the secondary microphone include:

Acquiring a vibration signal of the diaphragm of the speaker, and converting the vibration signal into a voltage signal according to a preset relationship between a vibration amplitude and a voltage intensity;

The voltage signal is amplified and output through the sub-microchannel.

In a second aspect, an embodiment of the present invention provides a switching device applied to a call device, where the device includes:

a determining unit, configured to determine whether a preset switching signal is collected;

a switching unit, configured to: when the determining unit determines that the preset switching signal is collected, switch the speaker of the calling device to a secondary microphone, so that the secondary microphone and the microphone of the calling device form a double microphone .

In a first possible implementation manner of the second aspect, the speaker is connected to the speaker path and the sub-mike channel through an analog switch; The switching unit is specifically configured to control the analog switch to open a connection between the speaker and the secondary microphone path, and cut a connection between the speaker and the speaker path, so that the speaker and the speaker A secondary mic path forms the secondary mic.

In a third aspect, an embodiment of the present invention provides a call device, where the call device includes at least one processor, at least one network interface or other communication interface, a memory, at least one communication bus, and a speaker component; the memory is used for storing a program instruction, the processor is configured to execute the following steps according to the program instruction:

Determining whether a preset switching signal is collected;

When the preset switching signal is acquired, the speaker component is switched to a secondary microphone, so that the secondary microphone and the microphone of the talking device form a double microphone.

In a first possible implementation manner of the third aspect, the speaker component includes a speaker, a double-pole double-throw analog switch, a speaker path, a sub-mike path, and an impedance matcher.

Two pins of the speaker are respectively connected to two input ends of the double-pole double-throw analog switch;

Two output ends of the double-pole double-throw analog switch are connected to the speaker passage, and the remaining two output ends of the double-pole double-throw analog switch are connected to the auxiliary microphone passage;

The impedance matcher is connected in series in the secondary microphone path.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation, the processor performs the following steps: switching the speaker component to the secondary microphone:

Controlling the double-pole double-throw analog switch to turn on a connection between the speaker and the sub-mike path, and disconnect a connection between the speaker and the speaker path to form the speaker and the sub-mike path The secondary microphone.

In the embodiment of the invention, the speaker of the communication device has two functions of electroacoustic conversion and acoustic-electric conversion, so that in the scenario where the dual microphone is needed, the speaker can be converted into a microphone, that is, the acoustic signal to the electrical signal is performed through the speaker. The conversion, together with the microphone of the calling device itself, forms a dual microphone. In this way, the design requirements of the microphone and the speaker that are provided to the communication device itself can be reduced, and the structural space inside the communication device can be saved, which is beneficial to realize the slim and light design of the device. DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of a method for switching to a call device according to an embodiment of the present invention;

2 is a schematic view showing the structure of a speaker assembly according to an embodiment of the present invention;

3 is a schematic diagram of a switching device applied to a call device according to an embodiment of the present invention;

4 is a schematic diagram showing the hardware configuration of a call device according to an embodiment of the present invention. detailed description

In order to make those skilled in the art better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Before introducing the technical solution of the present invention, the application scenario of the present invention will be explained. As is well known, for a call device (such as a cell phone, a tablet, etc.) having a call and playback function, the basic components include a speaker for playback and a microphone for mic. The speaker is used to convert the received electrical signal into an acoustic signal for sound playback, and the mic is used to convert the collected acoustic signal into an electrical signal for transmission. The speaker and mic are independent of each other and implement their own functions.

With the continuous development of technology and the gradual improvement of user requirements for devices, in order to provide clear calls to users in a more noisy environment, a dual mic call device has emerged, that is, two mics are built in the call device, and the main mic provides clearness to the user. The call, the secondary mic cooperates with the main mic to reduce the environmental noise. Taking a mobile phone as an example, the main mic and the secondary mic are respectively set at the upper end and the lower end of the mobile phone, and the difference in signal strength, phase, time, and the like caused by the difference in position of the two mics is used to separate the noise and the voice signal. The design of the present invention brings about the problems introduced in the background of the embodiments of the present invention. In order to solve the problems and ensure the clarity of the call, the embodiment of the present invention provides a single mic call device (of course, the solution of the present invention is also The method for switching to a dual-mic communication device, which is not specifically limited in this embodiment of the present invention, converts the speaker in the single-mic communication device into a mic when necessary, so that the single-mic communication device itself has Mic is used as the main mic, and the mic converted by the speaker is used as the secondary mic to convert the single mic call device into a dual mic call device, providing the user with Clear calls and avoid problems with existing dual mic calling devices.

The switching process of the embodiment of the present invention will be explained below with reference to the accompanying drawings. Referring to FIG. 1 , a flowchart of a method for switching a call device according to an embodiment of the present invention is shown, where the method includes:

Step 101: Determine whether a preset switching signal is collected.

Step 102: When collecting the preset switching signal, switch the speaker of the calling device to a secondary microphone, so that the secondary microphone and the microphone of the calling device form a double microphone.

According to the structural principle of the speaker, if the sound pressure is applied to the diaphragm of the speaker, the vibration of the diaphragm generates an electrical signal, and the strength of the electrical signal varies with the amplitude. In this embodiment, the speaker is used to implement the speaker. The reverse application of the acoustic signal to the electrical signal enables the speaker to implement the mic function.

Under normal circumstances, the speaker also acts as a speaker to convert the basic electrical signal to the acoustic signal. Only in special cases, the speaker is switched from the speaker to the microphone. That is, the speaker implements the speaker function by default, and the function is switched only when needed. In this regard, the embodiment of the present invention is mainly implemented by real-time monitoring a preset switching signal, that is, as long as the central processing unit collects a preset switching signal, the speaker is controlled to switch from the speaker function (that is, converting the electrical signal to the acoustic signal) to the microphone. Function (that is, converting the sound signal into an electric signal); if the preset switching signal is not collected, the speaker continues to maintain the speaker function.

The preset switching signals and the switching process in the embodiments of the present invention are explained below.

Preset switching signal

For different application scenarios, the preset switching signals are also different, which can be embodied as: hand-held call signal, audio collection signal, picture acquisition signal, and explained one by one below.

(1) Handheld call scene

The call can be divided into two types: hand-held call and hands-free call. If it is a hands-free call, the speaker needs to be used as a speaker. At this time, the function switch is not performed. If it is a hand-held call, the speaker is not needed at present, so the speaker can be used. The function is switched to mic so that it can cooperate with the mic that comes with the call device to perform noise reduction processing. The specific noise reduction process can be implemented in an existing manner, and the present invention is implemented. This article does not repeat this.

Specifically, the signal collected by the proximity light sensor can be used as a preset switching signal. Generally, when the user performs a handheld call, the proximity light sensor is blocked, so that the sensor can determine that the current call is a call, and the central processor is notified. , perform the speaker function switch. Alternatively, other signals may be used as the preset switching signal; for example, the mode of the hand-held call or the hands-free call is usually selected by the user, and the call device can know the current call mode according to the user's selection, when the call device knows that the current call is When the call is held, the speaker function can be switched.

(2) Audio capture scene

The audio collection scene in the embodiment of the present invention may include scenes such as recording and frequency shooting: for the recording scene, the preset switching signal (ie, the audio collection signal) may be embodied as a signal for starting the recording application, that is, when the user turns on the recording application record. In the case of audio information, the central processing unit receives the audio acquisition signal, so that the function of the speaker can be switched to mic.

For the 拍摄 frequency shooting scene, the preset switching signal (ie, the audio acquisition signal) can be reflected as the signal entering the camera mode, that is, when the user turns on the camera application and selects to enter the camera mode, the central processing unit receives the audio collection signal ( Of course, there is also a frequency acquisition signal), so that the function of the speaker can be converted to mic.

In the audio capture scene, when the function of the speaker is converted to mic (sub mic), it will cooperate with the mic (main mic) built into the call device to achieve acoustic positioning. The specific positioning process can be implemented in the existing manner, and the embodiment of the present invention does not describe the same.

(3) Picture collection scene

For the picture collection scene, the preset switching signal can be reflected as a signal to enter the photographing mode, 艮, when the user turns on the camera application and selects to enter the photographing mode, the central processing unit receives the image capturing signal, so that the speaker can be controlled. The function is converted to mic (sub mic) and interacts with the mic (main mic) built into the call device. When the subject makes a sound, the two mics separately collect the sound for acoustic focusing. The specific positioning and focusing process can be implemented in the existing manner, and the embodiment of the present invention does not describe the same.

It can be seen from the above description of the preset switching signal that the embodiment of the present invention is mainly directed to a scene that does not require a speaker, so that the speaker can form a double mic as the mic of the sub-mic and the communication device itself. 2. Switching process

In order to realize the switching between the speaker and the microphone function, the embodiment of the present invention provides a speaker assembly, which is shown in the structural diagram shown in FIG. 2, and may include a speaker 201, a double-pole double-throw analog switch 202, a speaker path 203, and a sub-mike path. 204. An impedance matcher 205.

Here, the two ends of the analog switch and the speaker can be defined as an input terminal, and the four ends connected to the speaker path and the sub-micro channel are defined as an output terminal, and the output terminals 1, 2, 3 are sequentially from top to bottom. 4, the connection relationship of the components in the speaker assembly is: two pins of the speaker are respectively connected to two input ends of the double-pole double-throw analog switch; two outputs of the double-pole double-throw analog switch Terminals 2, 4 are connected to the speaker path, and the remaining two output terminals 1, 3 of the double-pole double-throw analog switch are connected to the sub-mike path; the impedance matcher is serially connected in the sub-mike path .

Through the control of the analog switch, the speaker can be connected to the speaker path for receiving the electrical signal from the speaker channel and converted into an acoustic signal to play out; or the speaker can be connected to the sub-micro channel for collecting The acoustic signal is converted into an electrical signal and transmitted through the secondary mic path. Based on this, the implementation manner of switching the speaker to the secondary microphone provided by the embodiment of the present invention may be as follows:

As an example, the embodiment of the present invention may further provide a speaker component for converting an acoustic signal to an electrical signal according to the speaker structure principle described above, and the specific process may be: the vibration signal of the diaphragm collected by the speaker, According to the corresponding relationship between the vibration amplitude and the voltage intensity, the vibration signal is converted into a voltage signal, and output to the sub-microchannel, and the voltage signal is amplified by the impedance matching device in the path, and finally outputted by the sub-microchannel.

In the switching method of the embodiment of the present invention, by modifying the speaker component, a sub-micro channel is added on the basis of the original speaker and the speaker channel, so that the speaker has the function of converting the electrical signal to the acoustic signal, and has the function from the acoustic signal to the electrical signal. The conversion function, in this way, in the scene where the dual mic is required, it is possible to control the switching of the speaker in the talking device to the mic (sub mic) use, and convert the single mic talking device into a dual mic talking device. That is to say, the solution of the present invention does not need to establish a separate sub mic, so that the problems caused by the separate establishment of the secondary mic in the prior art can be avoided. In addition, it should be noted that, according to the design idea of the embodiment of the present invention, in addition to the solution described above, the speaker can also implement the microphone function by default, and switch the function to the speaker when needed, that is, in the central processing unit. After the preset switching signal is acquired, the speaker is switched from the microphone to the speaker. The preset switching signal may be a signal for stopping the use of the microphone, such as a hand-held call end signal, an audio collection end signal, a picture collection end signal sent by the proximity light sensor, or the preset switching signal may also be a ring tone playing signal, and the opening is free. The signal of the call, the opening of the music playing signal, and the like indicate that the signal of the speaker is required, which is not specifically limited in the present invention. However, in view of the fact that the speaker is usually used to implement the conversion of the electrical signal to the acoustic signal, in order to avoid frequent switching between the speaker function and the microphone function, the embodiment of the present invention may preferably enable the speaker to implement the speaker function by default.

Corresponding to the above-mentioned switching method applied to the calling device, the embodiment of the present invention further provides a switching device applied to the calling device. Referring to the schematic diagram shown in FIG. 3, the device may include:

The determining unit 301 is configured to determine whether a preset switching signal is collected;

The switching unit 302 is configured to: when the determining unit determines that the preset switching signal is collected, switch the speaker of the calling device to a secondary microphone, so that the secondary microphone and the microphone of the calling device form a double Mike.

For the application scenarios of the preset switching signal and the preset switching signal, refer to the description of the above method, and details are not described here.

In addition, based on the speaker assembly shown in FIG. 2 and the specific switching manner of the speaker function to the microphone function, the switching unit in the embodiment of the present invention is specifically configured to control the analog switch to turn on the speaker and the secondary microphone path. And connecting the speaker and the speaker path to form the sub-microphone. Further, the embodiment of the present invention further provides a hardware configuration of the call device. Referring to Figure 4, at least one processor (e.g., a CPU), at least one network interface or other communication interface, memory, speaker assembly, and at least one communication bus can be included for enabling connection communication between the devices. The processor is configured to execute an executable module, such as a computer program, stored in the memory. Memory It may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The communication connection between the system gateway and at least one other network element is implemented by at least one network interface (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.

In implementing the handover process of the embodiment of the present invention, the processor may perform the following steps according to the program instructions stored in the memory:

Determining whether a preset switching signal is collected;

Specifically, the configuration of the speaker assembly and the function of the components can be referred to the above description, and will not be described herein.

In conjunction with the speaker assembly solution provided by the embodiment of the present invention, the processor may perform the following steps to switch the speaker component to the secondary microphone:

It will be apparent to those skilled in the art from the above description of the embodiments that all or part of the steps of the above embodiments may be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM or a disk. , an optical disk, etc., comprising instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to perform the various embodiments of the present invention or portions of the embodiments described herein. method.

It is to be noted that the various embodiments in the present specification are described in a progressive manner, and the same similar parts between the various embodiments may be referred to each other, and each embodiment focuses on different embodiments from other embodiments. At the office. In particular, for the device and the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment. The apparatus and system embodiments described above are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, and the components displayed as units may It may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

The above description is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Rights request

1. A switching method applied to communication equipment, characterized in that the method includes: determining whether a preset switching signal is collected;

When the preset switching signal is collected, the speaker of the communication device is switched to a secondary microphone, so that the secondary microphone and the microphone of the communication device form a double microphone.

2. The method according to claim 1, characterized in that: the preset switching signal is a handheld call signal sent by a proximity light sensor, and the dual microphones are used to suppress environmental noise.

3. The method according to claim 1, characterized in that: the preset switching signal is an audio collection signal, and the dual microphones are used for acoustic positioning.

4. The method according to claim 1, characterized in that: the preset switching signal is a picture collection signal, and the dual microphones are used for acoustic focusing.

5. The method according to any one of claims 1 to 4, characterized in that the speakers are respectively connected to the speaker path and the auxiliary microphone path through analog switches;

Switching the speaker of the communication device to a secondary microphone includes:

The analog switch is controlled to connect the connection between the speaker and the auxiliary microphone channel, and to cut off the connection between the speaker and the speaker channel, so that the speaker and the auxiliary microphone channel form the auxiliary microphone. .

6. The method according to claim 5, characterized in that the way in which the speaker and the secondary microphone pass through to form the secondary microphone includes:

Collect the vibration signal of the diaphragm of the speaker, and convert the vibration signal into a voltage signal according to the preset corresponding relationship between vibration amplitude and voltage intensity;

The voltage signal is amplified and output through the secondary microphone path.

7. A switching device applied to communication equipment, characterized in that the device includes: a judging unit, used to judge whether a preset switching signal is collected;

A switching unit configured to switch the speaker of the communication device to a secondary microphone when the determination unit determines that the preset switching signal is collected, so that the secondary microphone and the microphone of the communication device form a dual microphone. .

8. The device according to claim 7, characterized in that: the speaker is connected to the speaker path and the auxiliary microphone path respectively through analog switches; The switching unit is specifically used to control the analog switch to connect the connection between the speaker and the auxiliary microphone channel, and to cut off the connection between the speaker and the speaker channel, so that the speaker and the A sub-mic path forms the sub-mic.

9. A communication device, characterized in that the communication device includes at least one processor, at least one network interface or other communication interface, memory, at least one communication bus and speaker assembly; the memory is used to store program instructions, so The processor is configured to perform the following steps according to the program instructions:

Determine whether the preset switching signal is collected;

When the preset switching signal is collected, the speaker assembly is switched to a secondary microphone, so that the secondary microphone and the microphone of the communication device form a double microphone.

10. The communication device according to claim 9, wherein the speaker assembly includes a speaker, a double pole double throw analog switch, a speaker path, a secondary microphone path, and an impedance matcher, and the two pins of the speaker are respectively Connected to the two input terminals of the double-pole double-throw analog switch;

The two output terminals of the double-pole double-throw analog switch are connected to the speaker path, and the remaining two output terminals of the double-pole double-throw analog switch are connected to the auxiliary microphone path;

The impedance matching device is connected in series in the secondary microphone path.

11. The communication device according to claim 10, wherein the processor performs the following steps to switch the speaker component to the secondary microphone:

The double-pole double-throw analog switch is controlled to connect the connection between the speaker and the auxiliary microphone path, and to cut off the connection between the speaker and the speaker path, so that the speaker and the auxiliary microphone path form Said Deputy Mike.