CN107800853B - Memory, mobile phone, audio circuit thereof and method for externally playing audio file - Google Patents

Memory, mobile phone, audio circuit thereof and method for externally playing audio file Download PDF

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Publication number
CN107800853B
CN107800853B CN201710861935.2A CN201710861935A CN107800853B CN 107800853 B CN107800853 B CN 107800853B CN 201710861935 A CN201710861935 A CN 201710861935A CN 107800853 B CN107800853 B CN 107800853B
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circuit
interface
sound channel
audio
external loudspeaker
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CN201710861935.2A
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CN107800853A (en
Inventor
金修禄
吴志华
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Jiekai Communications Shenzhen Co Ltd
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Jiekai Communications Shenzhen Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit

Abstract

The invention provides a memory, a mobile phone, an audio circuit thereof and an audio file external playing method, wherein the audio circuit comprises a right sound channel circuit, a detection circuit, a control circuit and an interface unit, the control circuit comprises a switch piece and a power amplifier, the interface unit comprises a left sound channel interface and a right sound channel interface, the detection circuit is connected with the left sound channel interface, the right sound channel circuit is connected with the input end of the control circuit, the right sound channel interface is connected with the output end of the control circuit, the switch piece and the power amplifier are respectively connected between the input end and the output end of the control circuit, and the switch piece is disconnected when the detection circuit detects that an external loudspeaker is inserted. According to the audio circuit provided by the invention, the control circuit is added between the right channel circuit and the right channel interface, and when the external loudspeaker is inserted into the interface unit, the audio file of the mobile phone is played through the power amplifier and the external loudspeaker, so that the external playing effect of the mobile phone is improved, the user experience is improved, and the cost is reduced.

Description

Memory, mobile phone, audio circuit thereof and method for externally playing audio file
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a memory, a mobile phone, an audio circuit thereof and an audio file playing method.
Background
Along with the development of electronic technology, the use popularity of mobile electronic products is higher and higher, and the requirements of people on the intellectualization and humanization of the mobile electronic products are also higher and higher. Among them, the functions attached to the mobile electronic products become one of the determinants of whether the mobile electronic products can occupy the market, and the audio playing function is the most indispensable function among the functions. In order to improve the audio playing effect of the mobile electronic device, two methods are commonly used at present: 1. the double-horn scheme is that two horns are arranged on a mobile electronic product, and the size and stacking requirements of mobile electronic equipment are high due to the large size of the horns, so that the double-horn scheme is not beneficial to thinning; 2. the intelligent power amplifier is used for pushing the telephone receiver and the loudspeaker to play together, but the intelligent power amplifier is higher in cost and more complex in debugging.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the memory, the mobile phone, the audio circuit of the mobile phone and the method for playing out the audio file, so that the playing out effect of the mobile phone is improved, the user experience is improved, and the cost is reduced.
The specific technical scheme provided by the invention is as follows: the utility model provides an audio circuit of cell-phone, audio circuit includes right track circuit, detection circuitry, control circuit and interface unit, control circuit includes switching element and power amplifier, interface unit includes left track interface, right track interface, detection circuitry with left track interface connection, right track circuit with control circuit's input is connected, right track interface with control circuit's output is connected, switching element, power amplifier connect respectively in between control circuit's input, the output, switching element is in disconnection when detection circuitry detects external loudspeaker and inserts.
Furthermore, the audio circuit further comprises a left channel circuit, the interface unit further comprises a ground port, the left channel circuit is connected with the left channel interface, and the ground port is grounded.
Further, external loudspeaker include the socket unit, the socket unit includes first interface, second interface and third interface, first interface, second interface, third interface are in the socket unit inserts when the interface unit is middle, respectively with left sound channel interface, right sound channel interface and ground connection mouth are connected.
Further, the audio circuit further comprises a speaker, and the speaker is connected with the left channel circuit.
Further, the switching element is a transistor.
The invention also provides a method for externally playing the audio file of the mobile phone, wherein the mobile phone comprises the audio circuit, and the method for externally playing the audio file comprises the following steps:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
Further, the mobile phone further comprises a left sound channel circuit and a loudspeaker connected with the left sound channel circuit, and after the step of disconnecting the switch element if an external loudspeaker is inserted into the interface unit, the external playing method further comprises the following steps: and starting an external playing mode, and playing the audio file through the loudspeaker and the external loudspeaker.
The present invention also provides a memory having stored therein a plurality of instructions adapted to be loaded and executed by a processor:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
The present invention also provides a mobile phone, including:
a processor adapted to implement a plurality of instructions;
a memory adapted to store the plurality of instructions, the plurality of instructions adapted to be loaded and executed by the processor to:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
According to the audio circuit provided by the invention, the control circuit is added between the right channel circuit and the right channel interface, and when the external loudspeaker is inserted into the interface unit, the audio file of the mobile phone is played through the power amplifier and the external loudspeaker, so that the external playing effect of the mobile phone is improved, the user experience is improved, and the cost is reduced.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic diagram of an audio circuit;
FIG. 2 is a detailed schematic diagram of an audio circuit;
fig. 3 is a flowchart of a method of playing out an audio file.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided to explain the principles of the invention and its practical application to thereby enable others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use contemplated. In the drawings, like reference numerals will be used to refer to like elements throughout.
Referring to fig. 1 and fig. 2, the audio circuit of the mobile phone provided in this embodiment includes a right channel circuit 1, a detection circuit 2, a control circuit 3, and an interface unit 4. The control circuit 3 comprises a switch piece 31 and a power amplifier 32, the interface unit 4 comprises a left sound channel interface 41 and a right sound channel interface 42, the detection circuit 2 is connected with the left sound channel interface 41, the right sound channel circuit 1 is connected with an input end V1 of the control circuit 3, the right sound channel interface 42 is connected with an output end V2 of the control circuit 3, the switch piece 31 and the power amplifier 32 are respectively connected between an input end V1 and an output end V2 of the control circuit 3, and the switch piece 31 is disconnected when the detection circuit 2 detects that the external horn 5 is inserted.
The switch 31 and the power amplifier 32 are connected in parallel between the input end V1 and the output end V2, when the detection circuit 2 detects that the external speaker 5 is inserted, the switch 31 is turned off, at this time, only the power amplifier 32 is connected between the input end V1 and the output end V2, and the audio file of the mobile phone can be played through the power amplifier 32 and the external speaker 5. When the external speaker 5 is pulled out or the earphone is inserted, the switching member 31 is closed, and at this time, the power amplifier 32 is short-circuited. The switch 31 in this embodiment is a transistor, but may be another electronic component having a switching function, and is not limited herein.
In order to realize the stereo effect, the audio circuit further includes a left channel circuit 6 and a speaker (not shown), the interface unit 4 further includes a ground port 43, the speaker is connected to the left channel circuit 6, the left channel circuit 6 is connected to the left channel interface 41, and the ground port 43 is grounded. When the mobile phone is in the external playing mode, the left channel audio signal and the right channel audio signal can be played through the loudspeaker and the external loudspeaker 5 respectively, so that the mobile phone has a better stereo effect when being played externally.
The external speaker 5 includes a socket unit 51 and a speaker unit 52, the socket unit 51 includes a first interface 511, a second interface 512 and a third interface 513, and the first interface 511, the second interface 512 and the third interface 513 are respectively connected to the left channel interface 41, the right channel interface 42 and the ground interface 43 when the socket unit 51 is inserted into the interface unit 4.
In order to implement the microphone function, the mobile phone in this embodiment further includes a microphone circuit 7, the interface unit 4 further includes a microphone interface 44, the microphone circuit 7 is connected to the microphone interface 44, the external speaker 5 further includes a fourth interface 514, and when the socket unit 51 is inserted into the interface unit 4, the fourth interface 514 is connected to the microphone interface 44.
Referring to fig. 2 again, specifically, the right channel circuit 1 includes a signal port S1, an inductor L1, a bead FB1, a capacitor C1, a capacitor C2, a resistor R1, a transient voltage suppressor TVS1, and an inductor L2, where the inductor L1 is connected to the signal port S1, the bead FB1 is connected to the inductor L1, the inductor L2 is connected between the output end of the bead FB1 and the input end V1, the capacitors C1, C2, R1, and TVS1 are respectively connected to the output end of the bead FB1, the capacitors C1, C2, R1, and TVS1 are respectively grounded at the other ends thereof, the signal port S1 is used for inputting the right channel audio signal, the inductors L1 and FB1 play a role in filtering, and the transient voltage suppressor TVS1 plays a role in preventing static electricity and is used for discharging static electricity.
The detection circuit 2 includes a signal port S2, a signal port S3, a resistor R2, and a resistor R3, wherein the resistor R2 is connected between the signal port S2 and the left channel interface 41, and the resistor R3 is connected between the signal port S3 and the left channel interface 41. The resistor R2 and the resistor R3 each serve as a load resistor of the detection circuit 2.
The left channel circuit 6 includes a signal port S4, an inductor L3, a magnetic bead FB2, a capacitor C3, a capacitor C4, a resistor R4, a transient voltage suppressor TVS2, and an inductor L4, where the inductor L3 is connected to the signal port S4, the magnetic bead FB2 is connected to the inductor L3, the inductor L4 is connected between an output terminal of the magnetic bead FB2 and the left channel interface 41, the capacitor C3, the capacitor C4, the resistor R4, and the transient voltage suppressor TVS2 are respectively connected to an output terminal of the magnetic bead FB2, the capacitor C3, the capacitor C4, the resistor R4, and another terminal of the transient voltage suppressor TVS2 are respectively grounded, the signal port S4 is used for inputting a left channel audio signal, the inductor L3 and the magnetic bead FB2 play a role of filtering, and the transient voltage suppressor TVS2 plays a role of preventing static electricity, and is used for discharging static electricity.
The microphone circuit 7 comprises a signal port S5, a capacitor C5, a transient voltage suppressor TVS3 and an inductor L5, wherein the signal port S5 is grounded through the capacitor C5 and the transient voltage suppressor TVS3, respectively, the signal port S5 is connected with the microphone interface 44 through the inductor L5, and the signal port S5 is used for outputting an audio signal collected by the external speaker 5 to the mobile phone.
The audio circuit provided by the embodiment plays the audio file of the mobile phone through the power amplifier 32 and the external loudspeaker 5 without adding an additional loudspeaker or an intelligent power amplifier by adding the control circuit 3 between the right channel circuit 1 and the right channel interface 42, so that the cost is reduced, and the external playing effect of the mobile phone is improved. In addition, when the mobile phone is in the external playing mode, the audio file of the mobile phone can be played through the loudspeaker of the mobile phone and the external speaker 5, the loudspeaker of the mobile phone plays the audio signal of the left channel, and the external speaker 5 plays the audio signal of the right channel, so that the stereo effect of the mobile phone is improved.
Referring to fig. 3, the present embodiment further provides a method for playing an audio file of a mobile phone, where the mobile phone includes the audio circuit as described above, that is, the audio circuit includes a right channel circuit 1, a detection circuit 2, a control circuit 3, and an interface unit 4. The control circuit 3 includes a switch 31 and a power amplifier 32, the interface unit 4 includes a left channel interface 41 and a right channel interface 42, the detection circuit 2 is connected with the left channel interface 41, the right channel circuit 1 is connected with an input end V1 of the control circuit 3, the right channel interface 42 is connected with an output end V2 of the control circuit 3, the switch 31 and the power amplifier 32 are respectively connected between an input end V1 and an output end V2 of the control circuit 3, the switch 31 is disconnected when the detection circuit 2 detects that the external speaker 5 is inserted, and the external playing method includes the steps of:
s1, detecting whether the external horn 5 is inserted into the interface unit 4, and judging whether the external horn 5 is inserted into the interface unit 4 according to the signals of the signal port S2 and the signal port S3 of the analysis detection circuit 2;
s2, if an external loudspeaker 5 is inserted into the interface unit 4, the switch piece 31 is disconnected, and the audio file is played through the external loudspeaker 5, wherein the switch piece 31 and the power amplifier 32 are connected in parallel between the input end V1 and the output end V2, when the detection circuit 2 detects that the external loudspeaker 5 is inserted, the switch piece 31 is disconnected, at the moment, only the power amplifier 32 is connected between the input end V1 and the output end V2, and the audio file of the mobile phone can be played through the power amplifier 32 and the external loudspeaker 5.
The mobile phone in this embodiment further includes a left channel circuit 6 and a speaker connected to the left channel circuit 6, and after step S2, the playing method further includes: and starting an external playing mode, and playing the audio file through a loudspeaker and an external loudspeaker 5.
The present embodiments also provide a memory having stored therein a plurality of instructions adapted to be loaded and executed by a processor:
detecting whether an external loudspeaker 5 is inserted into the interface unit 4;
if an external loudspeaker 5 is inserted into the interface unit 4, the switch piece 31 is disconnected, and the audio file is played through the external loudspeaker 5.
The present embodiment further provides a mobile phone, where the mobile phone includes: a processor adapted to implement a plurality of instructions; a memory adapted to store the plurality of instructions, the plurality of instructions adapted to be loaded and executed by the processor to:
detecting whether an external loudspeaker 5 is inserted into the interface unit 4;
if an external loudspeaker 5 is inserted into the interface unit 4, the switch piece 31 is disconnected, and the audio file is played through the external loudspeaker 5.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (7)

1. The audio circuit of the mobile phone is characterized by comprising a right sound channel circuit, a left sound channel circuit, a detection circuit, a control circuit and an interface unit, wherein the control circuit comprises a switch element and a power amplifier, the interface unit comprises a left sound channel interface, a right sound channel interface and a grounding port, the left sound channel circuit is connected with the left sound channel interface, and the grounding port is grounded; the detection circuit is connected with the left sound channel interface, the right sound channel circuit is connected with the input end of the control circuit, the right sound channel interface is connected with the output end of the control circuit, the switch piece and the power amplifier are respectively connected between the input end and the output end of the control circuit, and the switch piece is disconnected when the detection circuit detects that an external loudspeaker is inserted; the external loudspeaker includes the socket unit, the socket unit includes first interface, second interface and third interface, first interface, second interface, third interface are in the socket unit inserts during the interface unit respectively with left sound channel interface, right sound channel interface and ground connection mouth are connected.
2. The audio circuit of claim 1, further comprising a speaker, the speaker coupled to the left channel circuit.
3. The audio circuit of claim 1, wherein the switching element is a transistor.
4. A method for playing out an audio file of a cellular phone, wherein the cellular phone includes the audio circuit of claim 1, the method comprising the steps of:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
5. The method according to claim 4, wherein the mobile phone further comprises a left channel circuit and a speaker connected to the left channel circuit, and after the step of turning off the switch member if an external speaker is inserted into the interface unit, the method further comprises: and starting an external playing mode, and playing the audio file through the loudspeaker and the external loudspeaker.
6. A memory having stored therein a plurality of instructions for controlling the audio circuit of claim 1, the plurality of instructions adapted to be loaded and executed by a processor to:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
7. A handset, characterized in that the handset comprises the audio circuit of claim 1, the handset further comprising:
a processor adapted to implement a plurality of instructions;
a memory adapted to store the plurality of instructions, the plurality of instructions adapted to be loaded and executed by the processor to:
detecting whether an external loudspeaker is inserted into the interface unit;
if an external loudspeaker is inserted into the interface unit, the switch piece is disconnected, and the audio file is played through the external loudspeaker.
CN201710861935.2A 2017-09-21 2017-09-21 Memory, mobile phone, audio circuit thereof and method for externally playing audio file Active CN107800853B (en)

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CN107800853B true CN107800853B (en) 2020-07-24

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Publication number Priority date Publication date Assignee Title
CN109195067A (en) * 2018-07-20 2019-01-11 广州市欧智智能科技有限公司 A kind of muting control circuit
CN111263272B (en) * 2020-01-19 2022-05-20 深圳巴金科技有限公司 Audio signal shunting and returning method and system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204206428U (en) * 2014-08-21 2015-03-11 北京康智乐思网络科技有限公司 Audio interface and audio connector communication system and main equipment thereof and external equipment
CN106658291A (en) * 2016-12-21 2017-05-10 捷开通讯(深圳)有限公司 Audio device and method for switching stereo and single track external play

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204206428U (en) * 2014-08-21 2015-03-11 北京康智乐思网络科技有限公司 Audio interface and audio connector communication system and main equipment thereof and external equipment
CN106658291A (en) * 2016-12-21 2017-05-10 捷开通讯(深圳)有限公司 Audio device and method for switching stereo and single track external play

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