CN112738307B - Electronic device - Google Patents

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Publication number
CN112738307B
CN112738307B CN202011601508.9A CN202011601508A CN112738307B CN 112738307 B CN112738307 B CN 112738307B CN 202011601508 A CN202011601508 A CN 202011601508A CN 112738307 B CN112738307 B CN 112738307B
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Prior art keywords
electronic device
earphone
signal processing
gating switch
electronic equipment
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CN202011601508.9A
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CN112738307A (en
Inventor
麦碧权
周伟
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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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
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/09—Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Abstract

The application discloses electronic equipment includes: 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; the control module is connected with the control end of the gating switch; the control module controls one switching element of the gating switch to be closed according to the using state of the electronic equipment. The method enables the electronic equipment to control the corresponding switch part in the gating switch to be closed according to different use states of the electronic equipment, so that the corresponding signal processing circuit is used for processing the audio signal transmitted to the earphone equipment by the electronic equipment, the TDD noise in the audio signal is removed, the performance of the audio signal is improved as much as possible, and the user experience is improved.

Description

Electronic device
Technical Field
The present disclosure relates to the field of audio signal processing, and particularly to an electronic device.
Background
With the continuous improvement of the living demands of people, the earphone equipment almost becomes the necessity of the life of people. In life, a user can conveniently listen to multimedia data and call data played by the electronic equipment by connecting the earphone equipment with the electronic equipment.
When a conventional electronic device, such as a mobile phone, a tablet computer, etc., is connected to an earphone device, the conventional electronic device is generally connected to the earphone device through an earphone interface, such as a 3.5mm earphone interface, so as to transmit data, such as audio data, call data, etc., to the earphone device. In the existing design, an antenna is usually designed near an earphone interface, and after an electronic device is connected to an earphone device, a transmission line of the earphone device is equivalent to one antenna, in this case, when the electronic device is used to make and receive calls, time Division Distortion (TDD) noise (noise) on the electronic device, that is, the TDD noise will be radiated to a transmission path of audio data, that is, an earphone path, so that a user can hear the TDD noise when the user makes and receives calls using the earphone device, and user experience is seriously affected. Therefore, a signal processing circuit for removing noise is generally connected to the earphone path of the existing electronic device, for example, a magnetic bead (magnetic bead) is connected in series to the earphone path to eliminate TDD noise that may be generated during the use of the electronic device.
However, in the process of implementing the present application, the inventor finds that, due to the hysteresis effect of the beads, the audio signal may generate a distortion phenomenon after passing through the beads, which may cause a problem of damaging the performance of the audio signal and reducing the user experience.
Disclosure of Invention
The embodiment of the disclosure provides electronic equipment, so as to solve the problem that the performance of an audio signal may be damaged when the electronic equipment in the prior art transmits the audio signal.
In order to solve the technical problem, 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 comprising an earphone pin;
an audio module;
the gating switch comprises at least two switch pieces, the first ends of the at least two switch pieces are connected with the output end of the audio module, and the second end of each switch piece is connected with the same earphone pin of the earphone interface through a signal processing circuit corresponding to each switch piece; and the number of the first and second groups,
the control module is connected with the control end of the gating switch;
the control module controls one switching element of the gating switch to be closed according to the using state of the electronic equipment.
Optionally, the earphone interface includes a plurality of earphone pins, the electronic device includes a plurality of gating switches, and the plurality of earphone pins are connected to the plurality of gating switches in a one-to-one correspondence manner.
Alternatively, the matching impedances of different signal processing circuits corresponding to the same gate switch are different from each other.
Optionally, at least a portion of the signal processing circuit corresponding to the gate switch includes a magnetic bead.
Optionally, the usage state of the electronic device includes a first usage state, where the first usage state is a usage state in which an earphone device is connected through the earphone interface and user call data is output to the earphone 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 transmitting 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 member to be closed.
Optionally, the usage status of the electronic device includes a second usage status, where the second usage status is a second usage status in which a headset device is connected through the headset interface and audio 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:
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.
Optionally, the audio module and the control module are responsive to control of the same processor.
Optionally, the plurality of earphone 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.
According to the embodiment of the disclosure, in the electronic device, a gating switch is arranged between the earphone interface and the audio module, the gating switch comprises at least two switching pieces, 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; the control module of the electronic equipment is connected with the control end of the gating switch, and can control the closing of one switch piece of the gating switch according to the use state of the electronic equipment, so that the electronic equipment can control the closing of the corresponding switch piece according to the difference of the use state of the electronic equipment, so that the corresponding signal processing circuit is used for processing the audio signal transmitted to the earphone equipment by the electronic equipment, and the performance of the audio signal is improved as much as possible while the TDD noise in the audio signal is removed, and the user experience is improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate 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 disclosure.
Fig. 2 is a schematic diagram of a second audio signal processing circuit in the electronic device provided by the embodiment of the disclosure.
Fig. 3 is a schematic diagram of a third audio signal processing circuit in the electronic device according to the embodiment of the disclosure.
Fig. 4 is a schematic view illustrating an audio signal processing flow in an electronic device according to an embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without inventive step, are intended to be within the 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 according to an embodiment of the disclosure. As shown in fig. 1, to solve the problem that the TDD noise may be transmitted to an earphone access and thus the performance of an audio signal is affected when the conventional electronic device transmits user call data to the earphone device through an earphone interface, in order to remove the TDD noise on the electronic device, a magnetic bead 103 may be fixedly connected in series between an audio module 102, for example, a CODEC (CODEC) and an earphone interface 104, where a corresponding number of magnetic beads may be respectively and correspondingly set according to the difference in the number of earphone pins included in the earphone interface; in specific implementation, the control module 101, for example, a central processing unit, may transmit the audio signal generated by the audio module to the magnetic bead 103, remove the TDD noise in the audio signal through the magnetic bead 103, and transmit the audio signal to the headphone interface 104, so as to improve performance of the audio signal transmitted in the headphone device.
However, due to the hysteresis effect of the magnetic beads, although the electronic device applying the circuit shown in fig. 1 can remove the TDD noise in the audio signal, it may also cause distortion of the audio signal, which may also impair the performance of the audio signal and degrade the user experience of using the headphone device.
It should be noted that TDD noise is a kind of noise commonly found in electronic devices, especially Mobile terminal devices, and the reason for this is that the Power amplifier (Power amplifier) of the rf transmitting module of the electronic device transmits an envelope noise (envelope) every 1/217 sec, i.e. 217Hz, when a Global System for Mobile Communications (GSM) signal is transmitted.
In order to solve the above problem, in order to improve the performance of an audio signal transmitted in a headphone device as much as possible while removing TDD noise, that is, in order to improve total harmonic distortion plus noise (THD + N) performance of the headphone audio signal, an embodiment of the present disclosure provides an electronic device, including: 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; the control module is connected with the control end of the gating switch; the control module controls one switching element of the gating switch to be closed according to the using state of the electronic equipment.
In this embodiment, the electronic device may be a mobile terminal device such as a mobile phone and a tablet computer.
The headphone interface, which is an interface provided in the electronic device for connecting with a headphone device to transmit an audio signal into the headphone device, may be, for example, a 3.5mm headphone interface.
An audio module is a module disposed in an electronic device and used for outputting an audio signal, wherein the module generally includes a codec, that is, an electronic component for encoding and compressing the audio signal output by the electronic device and decoding the audio signal received by the electronic device.
In a specific implementation, a plurality of earphone pins may generally be provided in the earphone interface, that is, the earphone interface of this embodiment may include a plurality of earphone pins corresponding to the earphone pins, and the electronic device may further include a plurality of gating switches, where the plurality of earphone pins are connected to the plurality of gating switches in a one-to-one correspondence manner.
In an implementation, the plurality of headphone pins may include, for example, a first headphone pin for transmitting a left channel signal, a second headphone pin for transmitting a right channel signal, a third headphone pin for grounding, and a fourth headphone pin for transmitting a reference signal, for example, a reference voltage of a headphone interface, to the chip, which is not limited herein.
A gate switch, a switch comprising at least two switching elements, can control a certain switching element to close in response to the control of a connected control module, e.g. a Central Processing Unit (CPU). In a specific implementation, the multiple gating switches may be configured as a multi-channel program-controlled switch (multi-channel program-controlled switch), and each channel of the multi-channel program-controlled switch implements a function of each gating switch.
The usage state of the electronic device may be determined according to the type of the audio signal output after the electronic device is connected to the earphone device through the earphone interface, for example, the usage state may be a first usage state in which user call data is output, and may also be a second usage state in which audio data, i.e., audio data in music or video, is output.
It should be noted that, in a 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, which is not limited herein.
In this embodiment, matching impedances of different signal processing circuits corresponding to the same gating switch are different from each other, that is, in the signal processing circuit corresponding to each of the at least two switching elements of the gating switch in this embodiment, a part of the signal processing circuits may include magnetic beads having different impedances, so as to remove a corresponding TDD noise in the audio signal using the corresponding signal processing circuit according to different usage states of the electronic device, that is, at least a part of the signal processing circuits corresponding to the gating switch includes the magnetic beads.
Please refer to fig. 2, which is a schematic diagram of a second audio signal processing circuit in an electronic device according to an embodiment of the disclosure. In an implementation, as shown in fig. 2, a gating switch 105 may be correspondingly disposed between the audio module 102 of the electronic device, for example, the codec and at least one headphone pin of the headphone interface 104, for example, a gating switch is disposed between the codec and a first headphone pin for transmitting a left channel signal, a second headphone pin for transmitting a right channel signal, a third headphone pin for grounding, and a fourth headphone pin for transmitting a reference signal.
As shown in fig. 2, in this embodiment, the same gating switch 105 may include two switching elements, the first signal processing circuit connected to one switching element may be a direct wire, i.e., a circuit with an impedance close to zero, and the second signal processing circuit connected to the other switching element may be a circuit including a magnetic bead 103, i.e., a circuit with a function of removing TDD noise generated by an electronic device, it should be noted that, for convenience of description, only the gating switch corresponding to the first earphone pin is identified in fig. 2, and only the magnetic bead in one signal processing circuit is identified in fig. 2, it should be understood that the electronic element in the figure corresponding to the identified gating switch 105 is also a gating switch 105, and the electronic element in the figure corresponding to the identified magnetic bead 103 is also a magnetic bead 103.
In this embodiment, when the electronic device is in the first use state, that is, the electronic device is in a use state in which the electronic device is connected to the earphone device through the earphone interface and outputs audio data in music or video to the earphone device, the control module, for example, the central processing unit may send a switch closure connected with a first signal processing circuit, that is, a circuit with impedance close to zero, directly serving as a lead to the control end of the gating switch, so that the audio data in the music or video is not distorted due to processing by the magnetic beads, and user experience is not affected.
In this embodiment, when the electronic device is in the second usage state, that is, the electronic device is connected to the headset device through the headset interface and outputs the user call data to the usage state in the headset device, the control module may send the switch element connected to the second signal processing circuit to the control end of the gating switch to be closed, so as to remove the TDD noise in the user call data through the magnetic bead included in the second signal processing circuit, thereby improving the performance of the corresponding audio signal and improving the user experience. It should be noted that, as detailed description is given in the prior art, details of how to determine whether the electronic device is outputting the user call data are not described herein.
As can be seen from fig. 2, in this embodiment, the electronic device may switch the corresponding signal processing circuit to perform adaptive processing on the audio signal output to the earphone device by the electronic device according to the difference of the use state of the electronic device, so as to improve the THD + N performance of the earphone signal and improve the user experience.
Please refer to fig. 3, which is a schematic diagram of a third audio signal processing circuit according to an embodiment of the present disclosure, wherein in fig. 3, a plurality of gate switches corresponding to each earphone pin one to one are illustrated as a multi-path programmable switch. As shown in fig. 3, in practice, the radio frequency transmitting module of the electronic device has different transmitting power and thus different TDD noise generated according to the different communication networks used by the electronic device, and the same signal processing circuit, for example, the signal processing circuit including the same magnetic bead, has relatively fixed noise removing capability, i.e., anti-interference capability, and for example, the same magnetic bead, may filter the TDD noise of GSM1800, but cannot completely filter the TDD noise of GSM 900. Therefore, as shown in fig. 3, in a specific implementation, in order to further improve performance of audio signals output by the electronic device, so as to improve user experience, in each path of the multi-path programmable switch of the electronic device, different matching impedances, for example, signal processing circuits including different impedance magnetic beads, for example, magnetic bead 103-1, magnetic bead 103-2, …, and magnetic bead 103-n, may be respectively and correspondingly connected, in the specific implementation, when the usage state of the electronic device is the first usage state, that is, when the electronic device is connected to the headset device through the headset interface, and user call data is output to the usage state of the headset device, the switch element connected to the corresponding signal processing circuit in each path of the multi-path programmable switch is controlled to be closed, so as to adaptively process different types of audio signals, and improve performance of the audio signals.
Please refer to fig. 4, which is 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, described in detail below.
Step S4100, when the usage state of the electronic device is the first usage state, acquiring network information of a communication network used when the electronic device transmits user call data.
Specifically, when the usage state of the electronic device is the first usage state, the network information of the communication network used by the electronic device when transmitting the user call data, for example, the network information is GSM900, GSM1800, GSM1900, or other frequency bands of other communication networks, may be acquired.
And step S4200, determining a target switching element from the gating switch according to the network information, wherein a signal processing circuit corresponding to the network information is connected to a second end of the target switching element.
After acquiring the network information of the communication network used by the electronic device, a target switch, that is, a switch to which a signal processing circuit corresponding to the network information is connected may be determined from the gating switch according to the network information.
In this embodiment, the signal processing circuit corresponding to the network information is a circuit capable of removing TDD noise generated when the radio frequency transmission module of the electronic device transmits call data using the communication network corresponding to the network information, that is, a signal processing circuit having different impedances, for example, different impedance beads.
Please refer to table 1 and table 2, which are schematic diagrams of the effect of different types of different series of magnetic beads on the THD + N performance, and schematic diagrams of impedances of different types of different series of magnetic beads corresponding to different network information.
Figure BDA0002869508250000061
TABLE 1
Figure BDA0002869508250000062
TABLE 2
As can be seen from tables 1 and 2, in the implementation, the HD series magnetic beads have higher impedance than the BD series at high frequency of 900MHz/1800MHz, and the TDD noise removing capability is better than that of the BD series, but the audio signal distortion phenomenon is easily deepened.
Therefore, in specific implementation, when the electronic device is in the first use state, the switch connected to the corresponding signal processing circuit in the gating switch may be controlled to be closed according to the network information of the communication network used when the electronic device transmits the user call data, that is, step S4300 is executed to control the target switch to be closed, so as to improve the THD + N performance of the headset signal while removing the TDD noise in the headset path.
According to the embodiment of the disclosure, in the electronic device, a gating switch is arranged between the earphone interface and the audio module, the gating switch comprises at least two switch pieces, and the second end of each switch piece is connected with the same earphone pin of the earphone interface through the signal processing electric quantity corresponding to each switch piece; the control module of the electronic equipment is connected with the control end of the gating switch, and can control the closing of one switch piece of the gating switch according to the using state of the electronic equipment, so that the electronic equipment can control the closing of the corresponding switch piece according to the difference of the using state of the electronic equipment, and the corresponding signal processing circuit is used for processing the audio signal transmitted to the earphone equipment by the electronic equipment, thereby removing the TDD noise in the audio signal, and improving the performance of the audio signal as much as possible, so as to improve the user experience.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present disclosure.
While the present disclosure has been described with reference to the embodiments illustrated in the drawings, which are intended to be illustrative rather than restrictive, it will be apparent to those of ordinary skill in the art in light of the present disclosure that many more modifications may be made without departing from the spirit of the disclosure and the scope of the appended claims.

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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