CN112738307B - Electronic equipment - Google Patents

Abstract

The present application discloses an electronic device, comprising: an earphone jack, the earphone jack includes an earphone pin; an audio module; a gating switch, the gating switch includes at least two switch parts, and the at least two switch parts The first end is connected to the output end of the audio module, and the second end of each switch is connected to the same earphone pin of the earphone interface through a corresponding signal processing circuit; and, the control module, the control module The module is connected to the control terminal of the strobe switch; wherein, the control module controls a switch part of the strobe switch to close according to the use state of the electronic device. This method enables the electronic device to control the corresponding switch in the strobe switch to close according to the different use states, so as to use the corresponding signal processing circuit to process the audio signal transmitted from the electronic device to the earphone device, and remove the TDD noise in the audio signal At the same time, the audio signal performance is improved as much as possible to enhance the user experience.

Description

Electronic equipment

technical field

The present disclosure relates to the field of audio signal processing, and in particular to an electronic device.

Background technique

With the continuous improvement of people's living needs, earphone equipment has almost become a necessity of people's life. In daily life, a user can conveniently listen to multimedia data and call data played by the electronic device by connecting the earphone device to the electronic device.

Current electronic devices, such as mobile phones, tablet computers, etc., are generally connected to the earphone device through an earphone jack, for example, a 3.5mm earphone jack, to transmit data such as audio data and call data to the earphone device. In the existing design, the antenna is usually designed near the earphone interface. When the electronic device is connected to the earphone device, the transmission line of the earphone device is equivalent to an antenna. In this case, when the electronic device is used to make a call, the electronic Time Division Distortion (TDD, TimeDivisionDistortion) noise (noise) on the device, that is, TDD noise will radiate to the audio data transmission path, that is, the earphone path, so that the user can hear TDD noise when using the earphone device to make a call, which is serious affect user experience. Therefore, the existing electronic equipment is generally connected with a signal processing circuit for noise removal in the earphone path, for example, a magnetic bead is connected in series in the earphone path to eliminate TDD that may be generated during the use of the electronic equipment. noise.

However, in the process of implementing the present application, the inventors found that due to the hysteresis effect of the magnetic beads, the audio signal will be distorted after passing through the magnetic beads, which may damage the performance of the audio signal and reduce the user experience.

Contents of the invention

The embodiment of the present disclosure provides an electronic device to solve the problem that the performance of the audio signal may be damaged when the electronic device in the prior art transmits the audio signal.

In order to solve the above-mentioned technical problems, the present disclosure is implemented as follows:

In a first aspect, an embodiment of the present disclosure provides an electronic device, including:

an earphone interface, the earphone interface includes an earphone pin;

audio module;

A strobe switch, the strobe switch includes at least two switch elements, the first end of the at least two switch elements is connected to the output end of the audio module, and the second end of each switch element is connected to the corresponding The signal processing circuit is connected to the same earphone pin of the earphone jack; and,

a control module, the control module is connected to the control terminal of the strobe switch;

Wherein, the control module controls a switch member of the gate switch to close according to the use state of the electronic device.

Optionally, the earphone interface includes a plurality of earphone pins, the electronic device includes a plurality of strobe switches, and the plurality of earphone pins are connected to the plurality of strobe switches in a one-to-one correspondence.

Optionally, the matching impedances of different signal processing circuits corresponding to the same gating switch are different from each other.

Optionally, at least part of the signal processing circuits corresponding to the gate switches include magnetic beads.

Optionally, the use state of the electronic device includes a first use state, and the first use state is a use state in which an earphone device is connected through the earphone interface, and user call data is output to the earphone device;

According to the use status of the electronic equipment, controlling a switch member of the strobe switch to be closed includes:

When the use state of the electronic device is the first use state, acquiring network information of a communication network used by the electronic device to transmit user call data;

determining a target switch from the gating switches according to the network information, wherein the second end of the target switch is connected to a signal processing circuit corresponding to the network information;

The target switch element is controlled to be closed.

Optionally, the use state of the electronic device includes a second use state, the second use state is a second use state in which an earphone device is connected through the earphone interface and audio data is output to the earphone device;

According to the use status of the electronic equipment, controlling a switch member of the strobe switch to be closed includes:

When the use state of the electronic device is the second use state, the signal processing circuit connected to the second end of the gating switch is controlled to close the switch element of the wire.

Optionally, the audio module and the control module are responsive to the control of the same processor.

Optionally, the plurality of earphone pins include at least one of the following: a first earphone pin for transmitting a left channel signal, a second earphone pin for transmitting a right channel signal, a second earphone pin for grounding Three headphone pins and a fourth headphone pin for transmitting reference signals.

According to an embodiment of the present disclosure, in the electronic device, a gating switch is provided between the earphone jack and the audio module, and the gating switch includes at least two switching elements, and the second end of each switching element passes through the corresponding The signal processing circuit is connected to the same earphone pin of the earphone interface; the control module of the electronic device is connected to the control terminal of the strobe switch, and can control a switch part of the strobe switch to close according to the use status of the electronic device, so that The electronic device can control the corresponding switch to close according to the different use states, so as to use the corresponding signal processing circuit to process the audio signal transmitted from the electronic device to the earphone device, and to improve the TDD noise as much as possible while removing the TDD noise in the audio signal. Audio signal performance to enhance user experience.

Other features of the present disclosure and advantages thereof will become apparent through the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of a first audio signal processing circuit in an electronic device provided by an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a second audio signal processing circuit in an electronic device provided by an embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a third audio signal processing circuit in an electronic device provided by an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of an audio signal processing flow in an electronic device provided by an embodiment of the present disclosure.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are part of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

Please refer to FIG. 1 , which is a schematic diagram of a first audio signal processing circuit in an electronic device provided by an embodiment of the present disclosure. As shown in Figure 1, in the process of transmitting the user's call data to the headset device through the headset interface, the existing electronic equipment may transmit TDD noise to the headset channel, thereby affecting the performance of the audio signal. In order to remove the TDD noise on the electronic device Generally, the magnetic bead 103 can be fixedly connected in series between the audio module 102, for example, a codec (CODEC, Coder-DECoder) and the earphone interface 104, wherein, according to the difference in the number of earphone pins included in the earphone interface, it can be respectively Correspondingly set the corresponding number of magnetic beads; in specific implementation, the audio signal generated by the audio module can be transmitted to the magnetic beads 103 by the control module 101, for example, the central processing unit, and the TDD noise in the audio signal can be removed by the magnetic beads 103 and The audio signal is transmitted to the earphone interface 104, so as to improve the performance of the audio signal transmitted in the earphone device.

However, due to the hysteresis effect of the magnetic beads, although the electronic device using the circuit shown in Figure 1 can remove the TDD noise in the audio signal, it will also cause distortion of the audio signal, which may also damage the performance of the audio signal and reduce the use of the user. Experience with headset devices.

It should be noted that TDD noise is a common type of noise in electronic equipment, especially in mobile terminal equipment. , When the frequency of 217Hz transmits the Global System for Mobile Communications (GSM, Global System for Mobile Communications) signal, the envelope (envelope) noise is generated.

In view of the above problems, in order to improve the performance of the audio signal transmitted in the earphone device as much as possible while removing the TDD noise, that is, in order to improve the total harmonic distortion plus noise (THD+N) performance of the earphone audio signal, the present disclosure implements An example provides an electronic device, including: an earphone jack, the earphone jack includes an earphone pin; an audio module; a gating switch, the gating switch includes at least two switch elements, the first of the at least two switch elements end is connected to the output end of the audio module, and the second end of each switch is connected to the same earphone pin of the earphone interface through a corresponding signal processing circuit; and, the control module, the control module and The control terminal of the gate switch is connected; wherein, the control module controls a switch part of the gate switch to close according to the use state of the electronic device.

In this embodiment, the electronic device may be a mobile terminal device such as a mobile phone or a tablet computer.

The earphone jack is an interface provided in the electronic device for connecting with the earphone device to transmit audio signals to the earphone device, for example, it may be a 3.5mm earphone jack.

An audio module is a module set in an electronic device for outputting audio signals, wherein the module generally includes a codec, that is, for encoding and compressing the audio signal output by the electronic device, and converting the audio signal output by the electronic device An electronic component that decodes received audio signals.

During specific implementation, there may generally be multiple earphone pins in the earphone jack, that is, the earphone jack in this embodiment may include multiple earphone pins, and correspondingly, the electronic device may also include multiple earphone pins. a plurality of said gating switches, and a plurality of said earphone pins are connected to a plurality of said gating switches in one-to-one correspondence.

In specific implementation, the plurality of earphone pins, for example, may have a first earphone pin for transmitting left channel signals, a second earphone pin for transmitting right channel signals, and a third earphone pin for grounding. The pin and the fourth earphone pin used to transmit the reference signal, for example, transmit the reference voltage of the earphone interface to the chip, are not specifically limited here.

The gating switch is a switch comprising at least two switching elements, and the switch can control a certain switching element to be closed in response to the control of a connected control module, for example, a central processing unit (CPU, Central Processing Unit). In specific implementation, the plurality of gating switches can be set as a multi-channel program-controlled switch, and each channel of the multi-channel program-controlled switch realizes the function of each gating switch respectively.

The use state of the electronic device may be determined according to the type of audio signal output after the electronic device is connected to the earphone device through the headphone jack. For example, the use state may be the first use state for outputting user call data, and may also be Outputting audio data, that is, playing the second usage state of audio data in music or video.

It should be noted that, during specific implementation, the audio module and the control module in the electronic device provided in this embodiment may respond to the control of the same processor, or may be controlled by different processors, and there is no special limitation here. .

In this embodiment, the matching impedances of different signal processing circuits corresponding to the same gating switch are different from each other, that is, the signal processing circuits in this embodiment corresponding to at least two switching elements of the gating switch respectively Among them, part of the signal processing circuit may include magnetic beads with different impedances, so as to use the corresponding signal processing circuit to remove the corresponding TDD noise in the audio signal according to the different use states of the electronic device, that is, at least part of the signal processing corresponding to the gating switch The circuit includes ferrite beads.

Please refer to FIG. 2 , which is a schematic diagram of a second audio signal processing circuit in an electronic device provided by an embodiment of the present disclosure. As shown in FIG. 2 , during specific implementation, a strobe switch 105 can be set correspondingly between the audio module 102 of the electronic device, for example, the codec and at least one earphone pin of the earphone interface 104, for example, in The codec and the first earphone pin for transmitting the left channel signal, the second earphone pin for transmitting the right channel signal, the third earphone pin for grounding and the first earphone pin for transmitting the reference signal A strobe switch is provided between the four earphone pins.

As shown in Figure 2, in this embodiment, the same gating switch 105 can include two switch elements, and the first signal processing circuit connected to one switch element can be directly a wire, that is, a circuit whose impedance is close to zero, and The second signal processing circuit connected to the other switching element may include a magnetic bead 103, that is, a circuit with the function of removing TDD noise generated by electronic equipment. It should be noted that, for the convenience of description, only the corresponding first The strobe switch of the earphone pin is marked, and only the magnetic bead in one signal processing circuit is marked in Fig. 2. It should be understood that the electron in the corresponding position of the circuit corresponding to the marked 105 in the figure is The component is also a gating switch 105 , and the electronic component in the corresponding circuit corresponding to the marked 103 is also a magnetic bead 103 .

In this embodiment, when the electronic device is in the first use state, that is, when the electronic device is connected to the headphone device through the headphone jack and outputs the audio data in the music or video to the use state of the headphone device, the control module can For example, the central processing unit may send to the control end of the strobe switch that the switch part connected with the first signal processing circuit, that is, a circuit with a direct wire and an impedance close to zero, is closed, so that the audio data in music or video There will be no distortion due to the processing of magnetic beads, which will affect the user experience.

In this embodiment, when the electronic device is in the second use state, that is, when the electronic device is connected to the earphone device through the earphone interface, and outputs the user call data to the use state of the earphone device, the control module can send a signal to the strobe switch. The control terminal sends the switch connected to the second signal processing circuit to close, so as to remove the TDD noise in the user call data through the magnetic beads included in the second signal processing circuit, improve the performance of the corresponding audio signal, and improve the user experience. It should be noted that how to determine whether the electronic device is outputting the user's call data is described in detail in the prior art and will not be repeated here.

According to the content of Figure 2, in this embodiment, the electronic device can switch the corresponding signal processing circuit to perform adaptive processing on the audio signal output from the electronic device to the headphone device according to the different usage status, thereby improving the THD of the headphone signal +N performance, improve user experience.

Please refer to FIG. 3, which is a schematic diagram of a third audio signal processing circuit provided by an embodiment of the present disclosure, wherein, in FIG. Make a gesture. As shown in Figure 3, because in practice, the radio frequency transmitting module of an electronic device has different transmitting power according to the communication network it uses, and thus the TDD noise generated by it is also different, and because the same signal processing circuit, for example, The denoising capability of the signal processing circuit including the same magnetic bead, that is, the anti-interference ability is relatively fixed. For example, the same magnetic bead may filter out the TDD noise of GSM1800, but cannot completely filter out the TDD noise of GSM900. Therefore, as shown in FIG. 3 , in order to further improve the performance of the audio signal output by the electronic device and enhance the user experience during specific implementation, each channel of the multi-program switch of the electronic device may have different corresponding connections. Impedance matching, for example, a signal processing circuit including magnetic beads with different impedances, for example, magnetic beads 103-1, magnetic beads 103-2, ..., magnetic beads 103-n, in specific implementation, when the use state of the electronic device is the first A use state, that is, when the headphone device is connected through the headphone interface, and the user's call data is output to the use state of the headphone device, the switch member connected to the corresponding signal processing circuit in each channel of the multi-program switch is controlled to be closed, Adaptively process different types of audio signals to improve audio signal performance.

Please refer to FIG. 4 , which is actually a schematic diagram of an audio signal processing flow provided by an embodiment of the present disclosure. As shown in FIG. 4, the process includes steps S4100-S4300, which will be described in detail below.

Step S4100, if the use state of the electronic device is the first use state, acquire network information of a communication network used by the electronic device to transmit user call data.

Specifically, when the use state of the electronic device is the first use state, the network information of the communication network used by the electronic device when transmitting the user's call data can be obtained. The network information is, for example, GSM900, GSM1800, GSM1900 And other frequency bands or other frequency bands of other communication networks.

Step S4200, according to the network information, determine a target switch element from the gating switches, wherein the second end of the target switch element is connected to a signal processing circuit corresponding to the network information.

After the network information of the communication network used by the electronic device is acquired, the target switch can be determined from the gating switches according to the network information, that is, the switch connected with the signal processing circuit corresponding to the network information.

In this embodiment, the signal processing circuit corresponding to the network information is a circuit capable of removing the TDD noise generated when the radio frequency transmitting module of the electronic device transmits call data using the communication network corresponding to the network information, that is, it has Different impedances, for example, signal processing circuits of different impedance magnetic beads.

Please refer to Table 1 and Table 2, which are schematic diagrams of the influence of different series and types of magnetic beads on THD+N performance, and schematic diagrams of the impedance of different series and different types of magnetic beads corresponding to different network information.

Table 1

Table 2

According to Table 1 and Table 2, it can be seen that in actual implementation, the impedance of HD series magnetic beads is higher than that of BD series at high frequency 900MHz/1800MHz, and its ability to remove TDD noise is stronger than that of BD series, but it is easy to deepen audio signal distortion. .

Therefore, in actual implementation, when the electronic device is in the first use state, it is possible to control the switching element connected to the corresponding signal processing circuit in the strobe switch according to the network information of the communication network used when it transmits the user's call data. Closing, that is, executing step S4300 to control the target switch to close, so as to improve the THD+N performance of the headphone signal while removing the TDD noise in the headphone channel.

According to an embodiment of the present disclosure, in the electronic device, a gating switch is provided between the earphone jack and the audio module, and the gating switch includes at least two switching elements, and the second end of each switching element passes through the corresponding The signal processing power is connected to the same earphone pin of the earphone interface; the control module of the electronic device is connected to the control terminal of the strobe switch, and can control a switch part of the strobe switch to close according to the use status of the electronic device, so that The electronic device can control the corresponding switch to close according to the different use status, so as to use the corresponding signal processing circuit to process the audio signal transmitted from the electronic device to the earphone device, so as to improve the TDD noise as much as possible while removing the TDD noise in the audio signal. Audio signal performance to enhance user experience.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present disclosure can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present disclosure.

The embodiments of the present disclosure have been described above in conjunction with the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Under the inspiration of the present disclosure, without departing from the purpose of the present disclosure and the protection scope of the claims, many forms can be made, all of which are within the protection of the present disclosure.

Claims (8)

1. An electronic device, comprising:

an earphone interface comprising an earphone pin;

an audio module;

the gating switch comprises at least two switching pieces, the first ends of the at least two switching pieces are connected with the output end of the audio module, and the second end of each switching piece is connected with the same earphone pin of the earphone interface through a signal processing circuit corresponding to each switching piece; and the number of the first and second groups,

the control module is connected with the control end of the gating switch;

wherein the control module controls one switching element of the gating switch to be closed according to the using state of the electronic equipment,

the matching impedances of the signal processing circuits corresponding to the at least two switching elements are different from each other.

2. The electronic device of claim 1, wherein the headphone interface comprises a plurality of the headphone pins, the electronic device comprises a plurality of the gating switches, and the plurality of headphone pins are connected to the plurality of gating switches in a one-to-one correspondence.

3. The electronic device of claim 2, wherein the matching impedances of different signal processing circuits corresponding to the same gating switch are different from each other.

4. The electronic device of claim 1, wherein at least a portion of the signal processing circuitry corresponding to the gating switch comprises a magnetic bead.

5. The electronic device according to claim 1, wherein the use status of the electronic device comprises a first use status, the first use status is a use status in which a headset device is connected through the headset interface and user call data is output to the headset device;

the controlling of the closing of one switching element of the gating switch according to the using state of the electronic equipment comprises the following steps:

acquiring network information of a communication network used by the electronic equipment when the electronic equipment transmits user call data under the condition that the use state of the electronic equipment is the first use state;

determining a target switching element from the gating switch according to the network information, wherein a second end of the target switching element is connected with a signal processing circuit corresponding to the network information;

and controlling the target switch piece to be closed.

6. The electronic device according to claim 1, wherein the use status of the electronic device includes a second use status, and the second use status is a second use status in which a headphone device is connected through the headphone interface and audio data is output to the headphone device;

the controlling of the closing of one switching element of the gating switch according to the using state of the electronic equipment comprises the following steps:

and under the condition that the use state of the electronic equipment is the second use state, controlling a signal processing circuit connected with the second end of the gating switch to close a switch piece of a lead.

7. The electronic device of claim 1, wherein the audio module and the control module are responsive to control of the same processor.

8. The electronic device of claim 2, wherein the plurality of earpiece pins comprises at least one of: the earphone comprises a first earphone pin used for transmitting a left channel signal, a second earphone pin used for transmitting a right channel signal, a third earphone pin used for grounding and a fourth earphone pin used for transmitting a reference signal.

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