CN106936972B - Method, device and system for controlling audio channel - Google Patents
Method, device and system for controlling audio channel Download PDFInfo
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- CN106936972B CN106936972B CN201511025005.0A CN201511025005A CN106936972B CN 106936972 B CN106936972 B CN 106936972B CN 201511025005 A CN201511025005 A CN 201511025005A CN 106936972 B CN106936972 B CN 106936972B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/605—Portable telephones adapted for handsfree use involving control of the receiver volume to provide a dual operational mode at close or far distance from the user
Abstract
The disclosure relates to a method, a device and a system for controlling an audio channel, which are used for reducing or eliminating POP sound in an earphone channel. The device comprises: first group control switch, the control end is connected with the treater, and first group control switch includes: a first branch control switch connected in series with a path between the earphone node and the first ground node; a second branch control switch connected in series to a path between the earphone node and the audio decoder; when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
Description
Technical Field
The present disclosure relates to the field of communications and computer processing, and more particularly, to a method and apparatus for controlling an audio path.
Background
With the development of electronic technology, the mobile terminal can not only make a call, but also play music. And the functions of the earphone are more and more abundant. The user can listen to the song through the earphone, and can also carry out conversation through the earphone.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a method, apparatus, and system for controlling an audio path.
According to a first aspect of the embodiments of the present disclosure, there is provided an apparatus for controlling an audio path, including:
first group control switch, the control end is connected with the treater, and first group control switch includes:
a first branch control switch connected in series with a path between the earphone node and the first ground node;
a second branch control switch connected in series to a path between the earphone node and the audio decoder;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in one embodiment, before the audio player needs to be powered down, the first group of control switches receives the first control signal sent by the processor and controls the first branch control switch to be closed and the second branch control switch to be opened.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in one embodiment, after the audio player is powered on or powered off, the first group of control switches receives the second control signal sent by the processor and controls the first branch control switch to be opened and the second branch control switch to be closed.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in one embodiment, the apparatus further comprises:
the second group of control switches, the control end is connected with the treater, includes:
the third branch circuit control switch is connected in series with a path between the first grounding node and the first protection circuit;
the fourth branch control switch is connected in series with a path between the audio decoder and the second protection circuit;
a first protection circuit connected to the second ground node;
a second protection circuit connected to the third ground node;
and after the audio player is powered on, the second group of control switches receives a third control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be closed.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in one embodiment, before the audio player needs to be powered down, the second group of control switches receives a fourth control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be switched off;
after the third branch control switch and the fourth branch control switch are disconnected, the first group of control switches receive a second control signal sent by the processor and control the first branch control switch to be disconnected and the second branch control switch to be closed.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in one embodiment, the apparatus is located in a mobile terminal.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to a second aspect of embodiments of the present disclosure, there is provided a system for controlling an audio path, comprising:
a processor;
an earphone node;
a first ground node;
an audio decoder connected with the processor;
the audio player is respectively connected with the processor and the earphone node;
first group control switch, the control end is connected with the treater, and first group control switch includes:
a first branch control switch connected in series with a path between the earphone node and the first ground node;
a second branch control switch connected in series to a path between the earphone node and the audio decoder;
the processor receives a power-on instruction of the audio player and sends a first control signal to the control ends of the first group of control switches; after the first control signal is sent, the processor controls the audio player to be powered on;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
In one embodiment, the processor receives a power-down instruction of the audio player and sends a first control signal to the control terminals of the first group of control switches; after the first control signal is sent, the processor controls the audio player to power down;
before the audio player needs to be powered down, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
In one embodiment, after the audio player is powered on or powered off, the processor sends a second control signal to the control terminals of the first group of control switches;
and the first group of control switches receive a second control signal sent by the processor and control the first branch circuit control switch to be switched off and the second branch circuit control switch to be switched on.
In one embodiment, the apparatus further comprises:
the second group control switch, the control end is connected with the treater, and the second group control switch includes:
the third branch circuit control switch is connected in series with a path between the first grounding node and the first protection circuit;
the fourth branch control switch is connected in series with a path between the audio decoder and the second protection circuit;
a first protection circuit connected to the second ground node;
a second protection circuit connected to the third ground node;
after the audio player is powered on, the processor sends a third control signal to the control ends of the second group of control switches;
and the second group of control switches receives a third control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be closed.
In one embodiment, the processor receives an audio player power-down instruction and sends a fourth control signal to the second set of control switches; after sending the fourth control signal, sending a second control signal to the first group of control switches;
before the audio player needs to be powered off, the second group of control switches receives a fourth control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be disconnected;
after the third branch control switch and the fourth branch control switch are disconnected, the first group of control switches receive a second control signal sent by the processor and control the first branch control switch to be disconnected and the second branch control switch to be closed.
According to a third aspect of the embodiments of the present disclosure, there is provided a method of controlling an audio path, including:
the processor receives a power-on instruction of the audio player and sends a first control signal to the control ends of the first group of control switches; after the first control signal is sent, the processor controls the audio player to be powered on;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a block diagram illustrating an apparatus for controlling an audio path according to an exemplary embodiment.
Fig. 2 is a block diagram illustrating an apparatus for controlling an audio path according to an example embodiment.
FIG. 3 is a block diagram illustrating a system for controlling an audio path according to an exemplary embodiment.
FIG. 4 is a block diagram illustrating a system for controlling an audio path in accordance with an exemplary embodiment.
FIG. 5 is a flow chart illustrating a method of controlling an audio path according to an exemplary embodiment.
FIG. 6 is a block diagram illustrating an apparatus in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the related art, a mobile phone can provide both a call function and a music playing function. Both functions can be listened to through headphones. That is, the earphone will connect the audio decoder of the call function and the audio player playing music at the same time.
One possible solution is that the processor (AP & BP) is connected to an audio decoder (codec) and an audio player (HIFI), respectively, as shown in fig. 1. The audio decoder and the audio player (HIFI) are both connected with the earphone. A switch (switch) is connected in series between the audio decoder and the earphone. The audio player includes an operational amplifier circuit (opacricuit) having a disable function. Due to the existence of the operational amplifier circuit, the audio player can generate POP (POP sound) sound at the moment of power-on or power-off, and the POP sound enters the earphone to influence the listening effect of a user.
The embodiment improves the path of the audio decoder, and reduces or eliminates POP sound on the path of the audio player by using the path of the audio decoder.
Fig. 2 is a block diagram illustrating an apparatus 200 for controlling an audio path according to an exemplary embodiment, as shown in fig. 2, including: a first set of control switches.
A first set of control switches, the control terminal sel being connected to the processor 207, the first set of control switches comprising: a first leg control switch 201 and a second leg control switch 202.
A first branch control switch 201 connected in series in the path between the earphone node 203 and the first ground node 204.
A second branch control switch 202 is connected in series in the path between the headphone node 203 and the audio decoder 205.
When the audio player 206 needs to be powered on, the first group of control switches receives the first control signal sent by the processor 207, and controls the first branch control switch 201 to be closed and the second branch control switch 202 to be opened.
In this embodiment, a first ground node 204 is added, and when the audio player 206 needs to be powered on, the first group of control switches receives a first control signal (e.g., sel high level signal), the first branch control switch 201 is closed, and the second branch control switch 202 is opened. The headphones are disconnected from the audio decoder 205. At this time, the headphone is connected to the audio player 206 while being grounded. The audio player 206 starts to power up, and the power level generated by the power up will flow directly to the first ground node 204 and not to the headphones. Because the earphone impedance is high relative to the first ground node 204. Since the level does not flow to the headset, POP sound is not generated.
In one embodiment, similar to the power-up process, before the audio player 206 needs to be powered down, the first group of control switches receives the first control signal sent by the processor 207 and controls the first branch control switch 201 to be closed and the second branch control switch 202 to be opened.
Similarly, when the audio player 206 is powered down, the power level generated by the power down will flow directly to the first ground node 204, and not to the headphones. Because the earphone impedance is high relative to the first ground node 204. Since the level does not flow to the headset, POP sound is not generated.
In one embodiment, after the audio player 206 is powered on or powered off, the first set of control switches receives the second control signal (e.g., sel low signal) sent by the processor 207 and controls the first branch control switch 201 to be open and the second branch control switch 202 to be closed.
In this embodiment, the earphone only needs to be grounded at a moment when the audio player 206 is powered on or powered off, in order to prevent POP sounds. During the duration of the audio player 206 after power up or power down, there will be no POP tone and the headset will not be grounded.
In one embodiment, as shown in fig. 3, the apparatus 200 further comprises: and a second set of control switches.
A second set of control switches, the control terminals of which are connected to the processor 207, comprising: a third branch control switch 208 and a fourth branch control switch 209.
A third branch control switch 208 is connected in series in the path between the first ground node 204 and the first protection circuit 210.
A fourth branch control switch 209 is connected in series in the path between the audio decoder 205 and the second protection circuit 211.
The first protection circuit 210 is connected to the second ground node 212. The first protection circuit 210 includes a protection resistor.
The second protection circuit 211 is connected to the third ground node 213. The second protection circuit 211 includes a protection resistor.
After the audio player 206 is powered on, the second set of control switches receives the third control signal sent by the processor 207 and controls the third branch control switch 208 and the fourth branch control switch 209 to be closed.
The second ground node 212 and the third ground node 213 may be the same ground node.
In this embodiment, after the audio player 206 is powered on, the processor 207 may not send the second control signal to the first set of control switches, but send a third control signal (e.g., a mute high signal) to the second set of control switches. The third leg control switch 208 and the fourth leg control switch 209 are closed, the first leg control switch 201 is closed and the second leg control switch 202 is open. The audio decoder 205 disables the first set of control switches by grounding the protection circuit. The earphone receives the music played by the audio player 206, and the signal is stable. Meanwhile, the first protection circuit 210 and the second protection circuit 211 may protect the audio decoder 205. As shown in fig. 4.
In one embodiment, before the audio player 206 needs to be powered down, the second set of control switches receives the fourth control signal sent by the processor 207 and controls the third branch control switch 208 and the fourth branch control switch 209 to be turned off.
After the third branch control switch 208 and the fourth branch control switch 209 are opened, the first group of control switches receives the second control signal sent by the processor 207, and controls the first branch control switch 201 to be opened and the second branch control switch 202 to be closed.
In this embodiment, the processor 207 sends a fourth control signal (e.g., a mute low signal) to the second set of control switches. The third leg control switch 208 and the fourth leg control switch 209 are open. The first set of control switches is deactivated and continues to receive the first control signal, at which point the audio player 206 begins to power down. The audio player 206 enters a low power consumption mode, the disable function is pulled low, the op-amp circuit enters the low power consumption mode, and the audio player 206 enters a standby mode, which is equivalent to power off. Since the impedance of the earphone is high with respect to the second ground node 212 and the third ground node 213, the level does not flow to the earphone, and thus POP sound is not generated.
Thereafter, the processor 207 sends a second control signal to the first set of control switches, the first leg control switch 201 is open and the second leg control switch 202 is closed. The headphones again communicate with the audio decoder 205.
In one embodiment, the device is located in equipment such as a mobile terminal with more than two sound paths of conversation and playing.
Fig. 2 is a block diagram illustrating a system for controlling an audio path according to an exemplary embodiment, as shown in fig. 2, including:
a processor 207;
an earphone node 203;
a first ground node 204;
an audio decoder 205 connected to the processor 207; the method is used for call processing;
an audio player 206 connected to the processor 207 and the earphone node 203, respectively; for music processing;
a first set of control switches, the control terminals of which are connected to the processor 207, the first set of control switches comprising:
a first branch control switch 201 connected in series to a path between the earphone node and the first ground node;
a second branch control switch 202 connected in series to a path between the headphone node 203 and the audio decoder 205;
the processor 207 receives a power-on instruction of the audio player 206 and sends a first control signal to the control terminals of the first group of control switches; after transmitting the first control signal, the processor 207 controls the audio player 206 to power up;
when the audio player 206 needs to be powered on, the first group of control switches receives the first control signal sent by the processor 207, and controls the first branch control switch 201 to be closed and the second branch control switch 202 to be opened.
For example, the user clicks a button for playing music, which corresponds to the processor 207 receiving a power-on command from the audio player 206. The processor 207 sends a first control signal (e.g. sel high signal) to the control terminals of the first set of control switches, the first leg control switch 201 is closed and the second leg control switch 202 is open. The headphones are disconnected from the audio decoder 205. At this time, the headphone is connected to the audio player 206 while being grounded. The processor 207 sends a power-on command to the audio player 206, which may be sent simultaneously with the first control signal or after the first control signal. The audio player 206 starts to power up, and the power level generated by the power up will flow directly to the first ground node 204 and not to the headphones. Because the earphone impedance is high relative to the first ground node 204. Since the level does not flow to the headset, POP sound is not generated.
In one embodiment, the processor 207 receives a power-down command from the audio player 206 and sends a first control signal to the control terminals of the first set of control switches; after transmitting the first control signal, the processor 207 controls the audio player 206 to power down;
before the audio player 206 needs to be powered down, the first group of control switches receives the first control signal sent by the processor 207 and controls the first branch control switch 201 to be closed and the second branch control switch 202 to be opened.
For example, the user clicks a button to turn off the music, which corresponds to the processor 207 receiving a power-down instruction from the audio player 206. The processor 207 sends a first control signal (e.g. sel high signal) to the control terminals of the first set of control switches, the first leg control switch 201 is closed and the second leg control switch 202 is open. The headphones are disconnected from the audio decoder 205. At this time, the headphone is connected to the audio player 206 while being grounded. The processor 207 sends a power down command to the audio player 206, which may be sent simultaneously with the first control signal or after the first control signal. The audio player 206 begins to power down, and the power down produces a level that flows directly to the first ground node 204 and not to the headphones. Because the earphone impedance is high relative to the first ground node 204. Since the level does not flow to the headset, POP sound is not generated.
In one embodiment, after the audio player 206 is powered on or powered off, the processor 207 sends a second control signal to the control terminals of the first set of control switches;
the first group of control switches receives the second control signal sent by the processor 207 and controls the first branch control switch 201 to be opened and the second branch control switch 202 to be closed.
In this embodiment, the earphone only needs to be grounded at a moment when the audio player 206 is powered on or powered off, in order to prevent POP sounds. During the duration of the audio player 206 after power up or power down, there will be no POP tone and the headset will not be grounded.
In one embodiment, as shown in fig. 3, the apparatus further comprises:
a second set of control switches, the control terminals of which are connected to the processor 207, the second set of control switches comprising:
a third branch control switch 208 connected in series in a path between the first ground node 204 and the first protection circuit 210;
a fourth branch control switch 209 connected in series in the path between the audio decoder and the second protection circuit 211 of 205;
a first protection circuit 210 connected to the second ground node 212;
a second protection circuit 211 connected to the third ground node 213;
after the audio player 206 is powered on, the processor 207 sends a third control signal to the control terminals of the second set of control switches;
the second group of control switches receives the third control signal sent by the processor 207 and controls the third branch control switch 208 and the fourth branch control switch 209 to be closed.
In this embodiment, after the audio player 206 is powered on, the processor 207 may not send the second control signal to the first set of control switches, but send a third control signal (e.g., a mute high signal) to the second set of control switches. The third leg control switch 208 and the fourth leg control switch 209 are closed, the first leg control switch 201 is closed and the second leg control switch 202 is open. The audio decoder 205 disables the first set of control switches by grounding the protection circuit. The earphone receives the music played by the audio player 206, and the signal is stable. Meanwhile, the first protection circuit 210 and the second protection circuit 211 may protect the audio decoder 205. As shown in fig. 4.
In one embodiment, the processor 207 receives the audio player 206 power-down instruction and sends a fourth control signal to the second set of control switches; after sending the fourth control signal, sending a second control signal to the first group of control switches;
when the audio player 206 needs to be powered down, the second group of control switches receives the fourth control signal sent by the processor 207, and controls the third branch control switch 208 and the fourth branch control switch 209 to be turned off;
after the third branch control switch 208 and the fourth branch control switch 209 are opened, the first group of control switches receives the second control signal sent by the processor 207, and controls the first branch control switch 201 to be opened and the second branch control switch 202 to be closed.
In this embodiment, the processor 207 sends a fourth control signal (e.g., a mute low signal) to the second set of control switches. The third leg control switch 208 and the fourth leg control switch 209 are open. The first set of control switches is deactivated and continues to receive the first control signal, at which point the audio player 206 begins to power down. The audio player 206 enters a low power consumption mode, the disable function is pulled low, the op-amp circuit enters the low power consumption mode, and the audio player 206 enters a standby mode, which is equivalent to power off. Since the impedance of the earphone is high with respect to the second ground node 212 and the third ground node 213, the level does not flow to the earphone, and thus POP sound is not generated.
Thereafter, the processor 207 sends a second control signal to the first set of control switches, the first leg control switch 201 is open and the second leg control switch 202 is closed. The headphones again communicate with the audio decoder 205.
FIG. 5 is a flow diagram illustrating a method of controlling an audio path according to an exemplary embodiment. Referring to fig. 5, the method steps include:
in step 501, a processor receives a power-on instruction of an audio player and sends a first control signal to control terminals of a first group of control switches; after the first control signal is sent, the processor controls the audio player to be powered on.
In step 502, when the audio player needs to be powered on, the first group of control switches receives the first control signal sent by the processor, and controls the first branch control switch to be closed and the second branch control switch to be opened.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 6 is a block diagram illustrating an apparatus 600 for controlling an audio path according to an example embodiment. For example, the apparatus 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 6, apparatus 600 may include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616.
The processing component 602 generally controls overall operation of the device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
The memory 604 is configured to store various types of data to support operation at the device 600. Examples of such data include instructions for any application or method operating on device 600, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 608 includes a screen that provides an output interface between the device 600 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 600 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 610 is configured to output and/or input audio signals. For example, audio component 610 includes a Microphone (MIC) configured to receive external audio signals when apparatus 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.
The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 614 includes one or more sensors for providing status assessment of various aspects of the apparatus 600. For example, the sensor component 614 may detect an open/closed state of the device 600, the relative positioning of components, such as a display and keypad of the apparatus 600, the sensor component 614 may also detect a change in position of the apparatus 600 or a component of the apparatus 600, the presence or absence of user contact with the apparatus 600, orientation or acceleration/deceleration of the apparatus 600, and a change in temperature of the apparatus 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 616 is configured to facilitate communications between the apparatus 600 and other devices in a wired or wireless manner. The apparatus 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 604 comprising instructions, executable by the processor 620 of the apparatus 600 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. An apparatus for controlling an audio path, comprising:
first group control switch, the control end is connected with the treater, and first group control switch includes:
a first branch control switch connected in series with a path between the earphone node and the first ground node;
a second branch control switch connected in series to a path between the earphone node and the audio decoder;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened;
wherein the apparatus further comprises:
the control end of the second group of control switches is connected with the processor;
the second set of control switches comprises: the first branch control switch, the second branch control switch, the third branch control switch, the fourth branch control switch, the first protection circuit and the second protection circuit are connected in series;
the third branch circuit control switch is connected in series with a path between the first grounding node and the first protection circuit;
the fourth branch control switch is connected in series with a path between the audio decoder and the second protection circuit;
a first protection circuit connected to the second ground node;
a second protection circuit connected to the third ground node;
after the audio player is powered on, the second group of control switches receives a third control signal sent by the processor, and controls the third branch control switch and the fourth branch control switch to be closed, so that the audio decoder is grounded through the second protection circuit.
2. The apparatus of claim 1, wherein the first set of control switches receives the first control signal from the processor and controls the first branch control switch to close and the second branch control switch to open before the audio player needs to be powered down.
3. The apparatus of claim 2, wherein after the audio player is powered on or powered off, the first set of control switches receives the second control signal sent by the processor and controls the first branch control switch to open and the second branch control switch to close.
4. The apparatus for controlling audio channel according to claim 1, wherein before the audio player needs to power down, the second set of control switches receives a fourth control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be turned off;
after the third branch control switch and the fourth branch control switch are disconnected, the first group of control switches receive a second control signal sent by the processor and control the first branch control switch to be disconnected and the second branch control switch to be closed.
5. The apparatus for controlling an audio path of claim 1, wherein the apparatus is located in a mobile terminal.
6. A system for controlling an audio path, comprising:
a processor;
an earphone node;
a first ground node;
an audio decoder connected with the processor;
the audio player is respectively connected with the processor and the earphone node;
first group control switch, the control end is connected with the treater, and first group control switch includes:
a first branch control switch connected in series with a path between the earphone node and the first ground node;
a second branch control switch connected in series to a path between the earphone node and the audio decoder;
the processor receives a power-on instruction of the audio player and sends a first control signal to the control ends of the first group of control switches; after the first control signal is sent, the processor controls the audio player to be powered on;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened;
wherein the system further comprises:
the control end of the second group of control switches is connected with the processor;
the second set of control switches includes: the first branch control switch, the second branch control switch, the third branch control switch, the fourth branch control switch, the first protection circuit and the second protection circuit are connected in series;
the third branch circuit control switch is connected in series with a path between the first grounding node and the first protection circuit;
the fourth branch control switch is connected in series with a path between the audio decoder and the second protection circuit;
a first protection circuit connected to the second ground node;
a second protection circuit connected to the third ground node;
after the audio player is powered on, the processor sends a third control signal to the control ends of the second group of control switches;
and the second group of control switches receives a third control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be closed so that the audio decoder is grounded through the second protection circuit.
7. The system according to claim 6, wherein the processor receives a power-down command from the audio player and sends a first control signal to the control terminals of the first set of control switches; after the first control signal is sent, the processor controls the audio player to power down;
before the audio player needs to be powered down, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened.
8. The system according to claim 7, wherein the processor sends the second control signal to the control terminals of the first set of control switches after the audio player is powered on or powered off;
and the first group of control switches receive a second control signal sent by the processor and control the first branch circuit control switch to be switched off and the second branch circuit control switch to be switched on.
9. The system according to claim 6, wherein the processor receives an audio player power down command and sends a fourth control signal to the second set of control switches; after sending the fourth control signal, sending a second control signal to the first group of control switches;
before the audio player needs to be powered off, the second group of control switches receives a fourth control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be disconnected;
after the third branch control switch and the fourth branch control switch are disconnected, the first group of control switches receive a second control signal sent by the processor and control the first branch control switch to be disconnected and the second branch control switch to be closed.
10. A method for controlling an audio path, applied to the apparatus for controlling an audio path according to any one of claims 1-5, the method comprising:
the processor receives a power-on instruction of the audio player and sends a first control signal to the control ends of the first group of control switches; after the first control signal is sent, the processor controls the audio player to be powered on;
when the audio player needs to be powered on, the first group of control switches receive a first control signal sent by the processor and control the first branch circuit control switch to be closed and the second branch circuit control switch to be opened;
further comprising:
after the audio player is powered on, the processor sends a third control signal to the control ends of the second group of control switches;
and the second group of control switches receives a third control signal sent by the processor and controls the third branch control switch and the fourth branch control switch to be closed so that the audio decoder is grounded through the second protection circuit.
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| CN201511025005.0A CN106936972B (en) | 2015-12-30 | 2015-12-30 | Method, device and system for controlling audio channel |
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| CN108446094B (en) * | 2018-03-27 | 2021-04-13 | 北京小米移动软件有限公司 | Audio acquisition circuit, terminal equipment, audio acquisition method and device |
| CN112965684B (en) * | 2019-12-12 | 2023-08-25 | 成都鼎桥通信技术有限公司 | Audio output control method and device |
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