CN201898481U - Audio driving device and mobile terminal - Google Patents
Audio driving device and mobile terminal Download PDFInfo
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- CN201898481U CN201898481U CN2010205392406U CN201020539240U CN201898481U CN 201898481 U CN201898481 U CN 201898481U CN 2010205392406 U CN2010205392406 U CN 2010205392406U CN 201020539240 U CN201020539240 U CN 201020539240U CN 201898481 U CN201898481 U CN 201898481U
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Abstract
The embodiment of the utility model discloses audio frequency drive arrangement and mobile terminal, this audio frequency drive arrangement includes: the power supply module, the main control module, the power amplification module and the loudspeaker are arranged; the power supply module is used for supplying power to the main control module and the power amplification module; the main control module is connected with the power amplification module and is used for outputting an audio signal and a control signal to the power amplification module; the power amplification module is connected with the loudspeaker and used for converting the audio signal into a sound signal through the loudspeaker and outputting the sound signal after the audio signal is amplified; and a constant voltage module is arranged between the power supply module and the power amplification module and is used for keeping the voltage output by the power supply module to the power amplification module constant. The embodiment of the utility model provides an audio frequency drive arrangement and mobile terminal can guarantee also to obtain when the battery low pressure with the saturation same audio frequency quality, increase the user and experience the beautiful of music, also can prevent to experience the variation poor because of the volume diminishes, walks the use that the sound leads to the user when the battery low pressure.
Description
Technical Field
The utility model relates to an electron field especially relates to an audio drive device and mobile terminal.
Background
Many current electronic products, including mobile terminals, have audio drivers for playing audio. The existing audio driving device can realize automatic gain control of audio and adjust audio volume. However, the inventor of the present invention finds that there are obvious defects in the existing audio driving device in implementing the present invention: referring to fig. 1, a schematic structural diagram of a conventional audio driving apparatus is shown, as shown in the figure:
the audio driving apparatus includes: a power supply module 61, a main control module 62, a power amplification module 63 and a loudspeaker 64. The power supply module 61 is connected to the main control module 62 and the power amplification module 63, and is configured to supply power to the main control module 62 and the power amplification module 63. The power supply module 61 is a battery. The signal output end of the main control module 62 is connected to the signal input end of the power amplification module 63, and the main control module 62 is configured to output an audio signal and a control signal to the power amplification module 63. The power amplification module 63 is connected to the speaker 64, and the power amplification module 63 is configured to amplify the audio signal and convert the amplified audio signal into a sound signal through the speaker 64 for output. The audio driving apparatus has the following disadvantages: the voltage for the power amplification module 63 to achieve the audio gain is provided by the power supply module 61, and as the electric quantity of the power supply module 61 decreases, the voltage provided by the power supply module 61 also decreases, but at present, no electronic product considers the influence on the power amplification module 63 when the electric quantity is low. In fact, all audio drivers of electronic products have rated operating voltage, and as the voltage provided by the battery decreases, the volume of the audio drivers will decrease, and even the audio drivers will sound away, chatter, etc., which easily causes the user experience of the products to deteriorate.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides an audio frequency drive arrangement and mobile terminal, can guarantee also to obtain when the battery low pressure with the saturation same audio frequency quality, increases the user and experiences to the beautiful of music, also can prevent to experience the variation in quality because of the volume diminishes, walks the use that the sound leads to the user when the battery low pressure.
In order to solve the above technical problem, an embodiment of the present invention provides an audio driving apparatus, which includes a power supply module 1, a main control module 2, a power amplification module 3, and a speaker 4; the power supply module 1 is used for supplying power to the main control module 2 and the power amplification module 3; the main control module 2 is connected with the power amplification module 3 and is used for outputting audio signals and control signals to the power amplification module 3; the power amplification module 3 is connected with the loudspeaker 4 and used for converting the audio signal into a sound signal through the loudspeaker 4 and outputting the sound signal after the audio signal is amplified;
a constant voltage module 5 is arranged between the power supply module 1 and the power amplification module 3, and the constant voltage module 5 is used for keeping the voltage output from the power supply module 1 to the power amplification module 3 constant.
The input end of the constant voltage module 5 is connected with the output end of the power supply module 1; and the output end of the constant voltage module 5 is connected with the power input end of the power amplification module 3.
The main control module 2 is connected with the constant voltage module 5 and used for controlling the constant voltage module 5 to work.
Wherein, the main control module 2 includes:
an audio control unit 21 for outputting an audio signal and a control signal to the power amplification module 3;
a voltage detection unit 22 for detecting whether the output voltage of the power supply module 1 is lower than a threshold value;
and a constant voltage control unit 23 connected to the voltage detection unit 22, for activating the constant voltage module 5 when the voltage detection unit 22 determines that the output voltage of the power supply module 1 is lower than the threshold value.
When the output voltage of the power supply module 1 is not lower than the threshold value, the constant voltage control unit 23 turns off the constant voltage module 5, so that the output voltage of the power supply module 1 is directly loaded to the power amplification module 3;
the constant voltage control unit 23 activates the constant voltage module 5 when the output voltage of the power supply module 1 is lower than the threshold value, so that the voltage applied to the power amplification module 3 is constant.
The voltage output by the constant voltage module 5 is the normal operating voltage of the power amplification module 3.
When the constant voltage module 5 works, the output current of the power supply module 1 is increased, the output power of the power supply module 1 is kept not lower than the normal working power of the power amplification module 3, and the output voltage of the power supply module 1 is boosted to the normal working voltage of the power amplification module 3 and then is output to the power amplification module 3.
The power supply module 1 is one of a lithium battery, a zinc-manganese battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery and an alkaline-manganese battery.
Correspondingly, the utility model also provides a mobile terminal, aforementioned audio drive arrangement among the mobile terminal.
Wherein the mobile terminal includes: mobile phones, notebook computers, palmtop computers, portable players.
Implement the embodiment of the utility model provides a, following beneficial effect has:
utility model has fully considered the characteristic of battery and the demand characteristic of audio drive arrangement to power, audio drive arrangement's power amplification module provides invariable supply voltage by the constant voltage module, guarantees also to obtain when the battery low pressure with same audio quality when saturated, increases the user and experiences to the beautiful of music, also can prevent to experience the variation in quality because of the volume diminishes, walks to sound and lead to user's use when the battery low pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic diagram of a conventional audio driving apparatus;
fig. 2 is a schematic structural diagram of a first embodiment of the audio driving apparatus provided by the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the audio driving apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 2, for the structure schematic diagram of the first embodiment of the audio driving apparatus provided by the present invention, as shown in fig. 2:
the audio driving apparatus includes: the device comprises a power supply module 1, a main control module 2, a power amplification module 3 and a loudspeaker 4; the power supply module 1 is used for supplying power to the main control module 2 and the power amplification module 3; the main control module 2 is connected with the power amplification module 3 and is used for outputting audio signals and control signals to the power amplification module 3; the power amplification module 3 is connected with the loudspeaker 4 and used for converting the audio signal into a sound signal through the loudspeaker 4 and outputting the sound signal after the audio signal is amplified.
A constant voltage module 5 is arranged between the power supply module 1 and the power amplification module 3, and the constant voltage module 5 is used for keeping the voltage output from the power supply module 1 to the power amplification module 3 constant.
The utility model provides an audio drive arrangement has fully considered the characteristic of battery and the demand characteristic of power amplification module to power. The power amplification module of the audio driving device is supplied with constant power supply voltage by the constant voltage module, so that the same audio quality as that in saturation is ensured to be obtained when the battery is in low voltage, the beautiful experience of a user on music is increased, and the use experience deterioration of the user caused by the fact that the volume is reduced and the sound is leaked can be prevented when the battery is in low voltage.
Referring to fig. 3, it is a schematic structural diagram of a second embodiment of the audio driving apparatus according to the present invention. In the present embodiment, the structure of the audio driving apparatus and the functions of the respective components will be described in more detail. As shown in fig. 3:
the audio driving apparatus includes: the device comprises a power supply module 1, a main control module 2, a power amplification module 3 and a loudspeaker 4; the power supply module 1 is used for supplying power to the main control module 2 and the power amplification module 3; the main control module 2 is connected with the power amplification module 3 and is used for outputting audio signals and control signals to the power amplification module 3; the power amplification module 3 is connected with the loudspeaker 4 and used for converting the audio signal into a sound signal through the loudspeaker 4 and outputting the sound signal after the audio signal is amplified.
A constant voltage module 5 is arranged between the power supply module 1 and the power amplification module 3, and the constant voltage module 5 is used for keeping the voltage output from the power supply module 1 to the power amplification module 3 constant. The input end of the constant voltage module 5 is connected with the output end of the power supply module 1; and the output end of the constant voltage module 5 is connected with the power input end of the power amplification module 3.
The constant voltage module 5 may be always in a working state, that is, when the power supply module 1 is saturated with electricity, the power supply module 1 also indirectly supplies power to the power amplification module 3 through the constant voltage module 5, and the constant voltage module 5 may ensure that the voltage loaded on the power amplification module 3 is constant, so as to maintain the normal working voltage of the power amplification module 3. Thereby stabilizing the sound quality of the audio driving apparatus.
Further, when the power supply module 1 is saturated with electricity, it is ensured that the power amplification module 3 operates at the normal voltage, and at this time, the power supply module 1 supplies power to the power amplification module 3 through the constant voltage module 5, and the constant voltage module 5 does not play a substantial role, but consumes the electricity of the power supply module 1, so that the main control module 2 of the audio driving apparatus is further improved, and the main control module 2 is connected with the constant voltage module 5 to control the operation of the constant voltage module 5.
In the prior art, the main control module 2 is only used for outputting the audio signal and the control signal to the power amplifying module 3, and in this embodiment, the main control module 2 is also used for controlling the operation of the constant voltage module 5. More specifically, the main control module 2 includes:
the audio control unit 21 is configured to output the audio signal and the control signal to the power amplification module 3. I.e. the functions implemented by the existing master control module.
A voltage detection unit 22, configured to detect whether the output voltage of the power supply module 1 is lower than a threshold. The manufacturer of the audio driving apparatus may preset a threshold value in the voltage detection unit 22, and the preset value should not be lower than the voltage at which the power amplification module 3 can normally operate.
And the constant voltage control unit 23 is connected with the voltage detection unit 22 and is used for starting the constant voltage module 5 when the voltage detection unit 22 judges that the output voltage of the power supply module 1 is lower than the threshold value.
More specifically, a multi-path selection switch may be disposed between the power supply module 1 and the constant voltage module 5 and the power amplification module 3, and the constant voltage control unit 23 turns off the constant voltage module 5 when the output voltage of the power supply module 1 is not lower than the threshold value, and controls the selection switch to connect the power supply module 1 and the power amplification module, so that the output voltage of the power supply module 1 is directly loaded to the power amplification module 3; when the output voltage of the power supply module 1 is lower than the threshold value, the constant voltage control unit 23 starts the constant voltage module 5, and controls the selector switch to disconnect the power supply module 1 and the power amplification module 3, so that the power supply module 1 is connected with the constant voltage module 5, and the voltage loaded on the power amplification module 3 is kept constant.
Further, for example, the voltage at which the power amplification module 3 can normally operate, and the threshold value preset in the voltage detection unit 22 is 4V, when the voltage detection unit 22 detects that the output voltage of the power supply module 1 is lower than the threshold value, for example, 3.8V, the constant voltage control unit 23 activates the constant voltage module 5.
The constant voltage module 5 operates under the control of the main control module 2. The constant voltage module 5 is started to block the direct connection between the power supply module 1 and the power amplification module 3, the power supply module 1 supplies power to the constant voltage module 5 instead, and the resistance of the constant voltage module 5 is smaller than that of the power amplification module 3, so that the current output by the power supply module 1 is increased, and the output power of the power supply module 1 is not lower than the normal working power of the power amplification module 3. That is, although the output voltage of the power supply module 1 decreases, the constant voltage module 5 increases the current outputted therefrom, and the total output power remains unchanged.
The constant voltage module 5 boosts the voltage output by the power supply module 1 to the normal operating voltage (4V) of the power amplification module 3 by a charge pump or DC-DC conversion, and outputs the boosted voltage to the power amplification module 3. Therefore, the power amplification module 3 is kept to work under normal voltage all the time, and the output audio quality of the power amplification module is ensured. More specifically, it is assumed that the voltage output from the power supply module 1 to the constant voltage module 5 is V a Current is I a The voltage output from the constant voltage module 5 to the power amplification module 3 is V b Current is I b Then V is a * I a ＝V b * I b Because the constant voltage module 5 boosts the voltage output by the power supply module 1, V is estimated a ＜V b However, since the power supplied from the power supply module 1 to the constant voltage module 5 is equal to the power supplied from the constant voltage module 5 to the power amplification module 3, I a ＞I b . The constant voltage module 5 plays a role of current conversion and voltage conversion in the above process,
it should be noted that the main control module 2 controls the constant voltage module 5 to start up, so as to maintain uninterrupted power supply to the power amplification module 3 in the process of supplying power to the power amplification module 3.
Preferably, in this embodiment, the power supply module 1 is a battery, and includes: lithium batteries, zinc-manganese batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, alkaline manganese batteries, and the like.
It is emphasized that the audio driving apparatus provided by the present embodiment is suitable for being applied to a mobile terminal, and the mobile terminal comprises: various terminals using a battery as a power source, such as a mobile phone, a notebook computer, a palm computer, and a portable player.
The utility model provides an audio drive arrangement and mobile terminal have fully considered the characteristic of battery and the demand characteristic of power amplification module to power. The power amplification module of the audio driving device is supplied with constant power supply voltage by the constant voltage module, so that the same audio quality as that in saturation is ensured to be obtained when the battery is in low voltage, the beautiful experience of a user on music is increased, and the use experience deterioration of the user caused by the fact that the volume is reduced and the sound is leaked can be prevented when the battery is in low voltage.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (7)
1. An audio driving device comprises a power supply module (1), a main control module (2), a power amplification module (3) and a loudspeaker (4); the power supply module (1) is used for supplying power to the main control module (2) and the power amplification module (3); the main control module (2) is connected with the power amplification module (3) and is used for outputting audio signals and control signals to the power amplification module (3); the power amplification module (3) is connected with the loudspeaker (4) and is used for converting the audio signal into a sound signal through the loudspeaker (4) to be output after the audio signal is amplified; it is characterized in that the preparation method is characterized in that,
be equipped with constant voltage module (5) between power module (1) and power amplification module (3), constant voltage module (5) are used for keeping the voltage that power module (1) exported to power amplification module (3) invariable.
2. Audio drive arrangement according to claim 1, characterized in that the input of the constant voltage module (5) is connected to the output of the power supply module (1); and the output end of the constant voltage module (5) is connected with the power input end of the power amplification module (3).
3. The audio driver apparatus as claimed in claim 1, wherein the main control module (2) is connected to the constant voltage module (5) for controlling the operation of the constant voltage module (5).
4. The audio driving apparatus according to claim 3, wherein the main control module (2) comprises:
an audio control unit (21) for outputting an audio signal and a control signal to the power amplification module (3);
a voltage detection unit (22) for detecting whether the output voltage of the power supply module (1) is lower than a threshold value;
and the constant voltage control unit (23) is connected with the voltage detection unit (22) and is used for starting the constant voltage module (5) when the voltage detection unit (22) judges that the output voltage of the power supply module (1) is lower than a threshold value.
5. Audio drive arrangement according to claim 4, wherein the power supply module (1) is one of a lithium battery, a zinc-manganese battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, an alkaline-manganese battery.
6. A mobile terminal, characterized in that the mobile terminal comprises the audio driving device according to any one of claims 1 to 5.
7. The mobile terminal of claim 6, wherein the mobile terminal comprises: mobile phones, notebook computers, palmtop computers, portable players.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205392406U CN201898481U (en) | 2010-09-20 | 2010-09-20 | Audio driving device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205392406U CN201898481U (en) | 2010-09-20 | 2010-09-20 | Audio driving device and mobile terminal |
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| CN201898481U true CN201898481U (en) | 2011-07-13 |
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| CN2010205392406U Expired - Lifetime CN201898481U (en) | 2010-09-20 | 2010-09-20 | Audio driving device and mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510824A (en) * | 2020-04-22 | 2020-08-07 | Oppo广东移动通信有限公司 | Audio processing circuit, audio processing method, electronic device, and computer-readable storage medium |
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2010
- 2010-09-20 CN CN2010205392406U patent/CN201898481U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510824A (en) * | 2020-04-22 | 2020-08-07 | Oppo广东移动通信有限公司 | Audio processing circuit, audio processing method, electronic device, and computer-readable storage medium |
| CN111510824B (en) * | 2020-04-22 | 2021-07-13 | Oppo广东移动通信有限公司 | Audio processing circuit, audio processing method, electronic device, and computer-readable storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20110713 |