CN101990038A - Method for improving efficiency of audio power amplifier and mobile phone using the same - Google Patents
Method for improving efficiency of audio power amplifier and mobile phone using the same Download PDFInfo
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- CN101990038A CN101990038A CN2010105707542A CN201010570754A CN101990038A CN 101990038 A CN101990038 A CN 101990038A CN 2010105707542 A CN2010105707542 A CN 2010105707542A CN 201010570754 A CN201010570754 A CN 201010570754A CN 101990038 A CN101990038 A CN 101990038A
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- audio
- power amplifier
- sound volume
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a mobile phone, which comprises a base band processing module, an audio power amplifier and a power supply management module, wherein the base band processing module outputs an audio signal; the audio power amplifier receives the audio signal and amplifies the audio signal; and the power supply management module provides variable working voltage for the audio power amplifier according to a volume level selected by a user. The invention further provides a method for improving the efficiency of the audio power amplifier. By the mode, the technical scheme of the invention can obviously reduce the integral power consumption of the mobile phone in the process of playing music and prolong the playing time.
Description
[technical field]
The present invention relates to field of consumer electronics, especially, relate to a kind of mobile phone that promotes the method for audio-frequency power amplifier efficient and use this method.
[background technology]
Music phone becomes more and more popular, and all basically in the market mobile phones are put loudspeaker outside all being furnished with, and all need special driving and put loudspeaker outward, in order to guarantee the quality of sound, generally all can select the audio-frequency power amplifier of AB class for use.And in the practical application, the maximal efficiency of AB genus audio power amplifier also has only 78.5%, mobile phone is in playing back music, efficient generally also has only below 50%, and efficient directly can influence the power consumption of mobile phone, and power consumption is big more, and the time that battery of mobile phone uses is just short more, therefore, be necessary to promote the efficient of audio-frequency power amplifier to reduce the power consumption of mobile phone.
[summary of the invention]
The technical problem that the present invention solves provides a kind of mobile phone that promotes the method for audio-frequency power amplifier efficient and use this method.
The present invention for the technical scheme that the technical solution problem adopts is: a kind of mobile phone is provided, comprises: baseband processing module, output audio signal; Audio-frequency power amplifier, received audio signal, and audio signal amplified; Power management module, the level of sound volume of selecting according to the user provides variable operating voltage for audio-frequency power amplifier.
The preferred embodiment one of according to the present invention, power management module receives the level of sound volume that the user selects, and according to the corresponding described operating voltage of described level of sound volume output.
The preferred embodiment one of according to the present invention, baseband processing module receive the level of sound volume that the user selects and also control the corresponding operating voltage of power management module output.
The preferred embodiment one of according to the present invention, mobile phone further comprises Subscriber Interface Module SIM, is used to import the level of sound volume that the user selects, Subscriber Interface Module SIM is sent to baseband processing module or power management module with level of sound volume.
The preferred embodiment one of according to the present invention, mobile phone further comprises loud speaker, loud speaker is sounding under the driving of the audio signal through amplifying, and audio-frequency power amplifier is the AB genus audio power amplifier.
The preferred embodiment one of according to the present invention, when the user selects different level of sound volume, the different operating voltage of the corresponding output of power management module.
The preferred embodiment one of according to the present invention, power management module is by the operating voltage input VBAT of the corresponding operating voltage of voltage output interface LDO output to audio-frequency power amplifier.
The present invention for the technical scheme that the technical solution problem adopts is: a kind of method that promotes audio-frequency power amplifier efficient is provided, comprises: utilize the baseband processing module output audio signal; Utilize the audio-frequency power amplifier received audio signal, and audio signal is amplified; Utilize power management module to provide variable operating voltage for audio-frequency power amplifier according to the level of sound volume that the user selects.
The preferred embodiment one of according to the present invention, the method that promotes audio-frequency power amplifier efficient further comprises: when the user selects different level of sound volume, the different operating voltage of the corresponding output of power management module.
The preferred embodiment one of according to the present invention, the method that promotes audio-frequency power amplifier efficient further comprises: the described level of sound volume of utilizing Subscriber Interface Module SIM input user to select, and utilize baseband processing module or power management module to receive the level of sound volume that the user selects.
By the way, the method for lifting audio-frequency power amplifier efficient provided by the invention and use the mobile phone of this method can significantly reduce the overall power of mobile phone when playing back music, prolong reproduction time.
[description of drawings]
Fig. 1 is the structural representation of mobile phone of the present invention;
Fig. 2 is the structural representation according to the mobile phone of the first embodiment of the present invention; And
Fig. 3 is the flow chart of the method for lifting audio-frequency power amplifier efficient of the present invention.
[embodiment]
Relevant feature of the present invention and technology contents please refer to following detailed description and accompanying drawing, and accompanying drawing only provides reference and explanation, is not to be used for the present invention is limited.
See also Fig. 1, Fig. 1 has illustrated the structural representation of mobile phone of the present invention.As shown in Figure 1, disclosed mobile phone comprises: baseband processing module 101, audio-frequency power amplifier 103 and power management module 102.
In the present embodiment, power management module 102 can directly receive the level of sound volume that the user selects and thinks that audio-frequency power amplifier 103 provides variable operating voltage.Yet, in other embodiments of the invention, also can utilize baseband processing module 101 to receive the level of sound volume that the user selects, and export corresponding operating voltage to audio-frequency power amplifier 103 according to the level of sound volume control power management module 102 that the user selects.
As shown in Figure 1, the operating voltage input VBAT of audio-frequency power amplifier 103 is directly connected on the voltage output interface LDO of power management module 102, and the efficient of audio-frequency power amplifier 103 can be obtained by following formula:
η＝(πV
peak)/(4V
BAT)
V wherein
PeakBe the output amplitude of audio signal, this amplitude is only with the amplitude of audio-frequency power amplifier output signal and gain relevantly, and the amplitude of output signal is big more, V
PeakBig more, it is big more to gain, and η is big more.And V
BATBe the voltage that inputs to the operating voltage input VBAT of audio-frequency power amplifier 103.Therefore,, reduce power consumption, have only reduction V in order to promote efficient
BAT
In the present invention, the operating voltage input VBAT of audio-frequency power amplifier 103 is connected on the voltage output interface LDO of the output adjusted of power management module 102,, adjusts the output voltage V on the voltage output interface LDO according to the level of sound volume that the user selects
BAT, and then can adjust efficiency eta.
Can test according to reality, obtain representing the table 1.1 of the corresponding relation of user's level of sound volume and LDO output voltage, must be noted that the correlation values in the table only is used to illustrate, in different applied environments, different numerical value can be arranged).Shown in table 1.1, when the user selects different level of sound volume, the different output voltage V of power management module 102 corresponding outputs
BATAs the operating voltage of audio-frequency power amplifier 103, only need adjust the output voltage V of LDO according to the different level of sound volume of user's setting
BAT, just can guarantee that audio-frequency power amplifier 103 always works in the efficient more than 70%.
Table 1.1
| Level of sound volume | The baseband output signal gain | The LDO output voltage |
| 1 | 23db | ?3.4V |
| 2 | 20db | ?3.2V |
| 3 | 17db | ?3.0V |
| 4 | 14db | ?2.9V |
| 5 | 13db | ?2.7V |
| 6 | 8db | ?2.6V |
| 7 | 5db | ?2.4V |
| 8 | 2db | ?2.2V |
| 9 | -1db | ?2.0V |
Disclosed mobile phone can further comprise Subscriber Interface Module SIM, for example: keyboard input module or touch-screen input module, be used on keyboard input module or touch-screen input module, selecting level of sound volume for the user, when power management module 102 has processing capacity, keyboard input module or touch-screen input module can be sent to level of sound volume power management module 102, and power management module 102 is after obtaining level of sound volume and then can export corresponding operating voltage to audio-frequency power amplifier 103 according to for example corresponding relation shown in the table 1.1.It should be noted that except that keyboard input module or touch-screen input module, the present invention can also adopt other Subscriber Interface Module SIMs to select level of sound volume for the user, as acoustic control input module etc., the present invention does not limit this.
When power management module 102 does not have processing capacity, keyboard input module or touch-screen input module can be sent to level of sound volume baseband processing module 101, and baseband processing module 101 is after obtaining level of sound volume and then can export corresponding operating voltage to audio-frequency power amplifier 103 according to for example control of the corresponding relation shown in the table 1.1 power management module 102.
In addition, in a preferred embodiment of the invention, audio-frequency power amplifier 103 can be the AB genus audio power amplifier.
See also Fig. 2, Fig. 2 has illustrated the structural representation of mobile phone according to an embodiment of the invention.As shown in Figure 2, in the first embodiment of the present invention, baseband processing module 201 is connected with the first input end 221 of audio-frequency power amplifier 203 with input resistance 205 by coupling capacitance 206.In addition, second input 222 of audio-frequency power amplifier amplifies resistance 208 and is arranged between the first input end 221 and output 223 of audio-frequency power amplifier by electric capacity 207 ground connection.Baseband processing module 201 can be by first input end 221 to audio-frequency power amplifier 203 input audio signals.
Therefore, by formula η=(π V
Peak)/(4V
BAT) as can be known, only need utilize the operating voltage V of power management module 202 suitable outputs corresponding to user-selected level of sound volume
BATOperating voltage input VBAT to audio-frequency power amplifier 203 can obtain rational efficient, thereby reduces power consumption.
Below see also Fig. 3, wherein, Fig. 3 has illustrated the flow chart of the method for lifting audio-frequency power amplifier efficient of the present invention.As shown in Figure 3, method of the present invention may further comprise the steps:
In step 301, utilize the baseband processing module output audio signal.
In step 302, utilize the audio-frequency power amplifier received audio signal, and audio signal is amplified.
In step 303, utilize power management module to provide variable operating voltage for audio-frequency power amplifier according to the level of sound volume that the user selects.
By the way, the invention provides a kind of mobile phone that promotes the method for audio-frequency power amplifier efficient and use this method, it can significantly reduce the overall power of mobile phone when playing back music, prolong reproduction time.
Above with reference to description of drawings various preferred embodiments of the present invention, but only otherwise deviate from the spirit and scope of the invention, those skilled in the art can carry out modifications and changes on the various forms to it, all belongs to protection scope of the present invention.
Claims (10)
1. a mobile phone is characterized in that, comprising:
Baseband processing module, output audio signal;
Audio-frequency power amplifier receives described audio signal, and described audio signal is amplified;
Power management module, the level of sound volume of selecting according to the user provides variable operating voltage for described audio-frequency power amplifier.
2. mobile phone according to claim 1 is characterized in that, described power management module receives the level of sound volume that the user selects, and according to the corresponding described operating voltage of described level of sound volume output.
3. mobile phone according to claim 1 is characterized in that, described baseband processing module receives the level of sound volume that the user selects, and controls the corresponding described operating voltage of described power management module output according to described level of sound volume.
4. according to claim 2 or 3 described mobile phones, it is characterized in that, described mobile phone further comprises Subscriber Interface Module SIM, is used to import the described level of sound volume that the user selects, and described Subscriber Interface Module SIM is sent to described baseband processing module or described power management module with described level of sound volume.
5. mobile phone according to claim 1 is characterized in that described mobile phone further comprises loud speaker, and described loud speaker is sounding under the driving of described audio signal through amplifying, and described audio-frequency power amplifier is the AB genus audio power amplifier.
6. mobile phone according to claim 1 is characterized in that, when the user selects different level of sound volume, and the different described operating voltage of the corresponding output of described power management module.
7. mobile phone according to claim 1 is characterized in that, described power management module is exported the operating voltage input VBAT of corresponding described operating voltage to described audio-frequency power amplifier by voltage output interface LDO.
8. a method that promotes audio-frequency power amplifier efficient is characterized in that, comprising:
Utilize the baseband processing module output audio signal;
Utilize audio-frequency power amplifier to receive described audio signal, and described audio signal is amplified;
Utilize power management module to provide variable operating voltage for described audio-frequency power amplifier according to the level of sound volume that the user selects.
9. the method for lifting audio-frequency power amplifier efficient according to claim 8 is characterized in that, when the user selects different level of sound volume, and the different described operating voltage of the corresponding output of described power management module.
10. according to Claim 8 or the method for 9 described lifting audio-frequency power amplifier efficient, it is characterized in that, described method further comprises: the described level of sound volume of utilizing Subscriber Interface Module SIM input user to select, and utilize described baseband processing module or power management module to receive the described level of sound volume that the user selects.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105827210A (en) * | 2015-08-31 | 2016-08-03 | 维沃移动通信有限公司 | Voltage adjustment method and terminal |
| CN106101933A (en) * | 2016-07-11 | 2016-11-09 | Tcl通力电子（惠州）有限公司 | Volume adjusting method and device of power amplifier system |
| CN106101936A (en) * | 2016-08-25 | 2016-11-09 | 深圳众思科技有限公司 | A kind of audio amplification device based on music maximum level, method and terminal |
| CN106131750A (en) * | 2016-08-25 | 2016-11-16 | 深圳众思科技有限公司 | A kind of audio amplification device, method and terminal |
| CN103686529B (en) * | 2012-09-13 | 2018-01-19 | 纬创资通股份有限公司 | Voltage supply circuit, audio output device and voltage supply method |
| CN107682551A (en) * | 2017-09-30 | 2018-02-09 | 努比亚技术有限公司 | A kind of control method of intelligent power output amplification, terminal and storage medium |
| CN113741855A (en) * | 2020-05-27 | 2021-12-03 | 青岛海信移动通信技术股份有限公司 | Audio playing method and terminal |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686529B (en) * | 2012-09-13 | 2018-01-19 | 纬创资通股份有限公司 | Voltage supply circuit, audio output device and voltage supply method |
| CN105827210A (en) * | 2015-08-31 | 2016-08-03 | 维沃移动通信有限公司 | Voltage adjustment method and terminal |
| CN106101933A (en) * | 2016-07-11 | 2016-11-09 | Tcl通力电子（惠州）有限公司 | Volume adjusting method and device of power amplifier system |
| CN106101933B (en) * | 2016-07-11 | 2020-07-31 | Tcl通力电子（惠州）有限公司 | Volume adjusting method and device of power amplifier system |
| CN106101936A (en) * | 2016-08-25 | 2016-11-09 | 深圳众思科技有限公司 | A kind of audio amplification device based on music maximum level, method and terminal |
| CN106131750A (en) * | 2016-08-25 | 2016-11-16 | 深圳众思科技有限公司 | A kind of audio amplification device, method and terminal |
| CN106101936B (en) * | 2016-08-25 | 2022-03-25 | 南昌黑鲨科技有限公司 | Audio amplification device, method and terminal based on music maximum level |
| CN106131750B (en) * | 2016-08-25 | 2022-04-01 | 南昌黑鲨科技有限公司 | Audio amplification device, method and terminal |
| CN107682551A (en) * | 2017-09-30 | 2018-02-09 | 努比亚技术有限公司 | A kind of control method of intelligent power output amplification, terminal and storage medium |
| CN107682551B (en) * | 2017-09-30 | 2021-02-19 | 努比亚技术有限公司 | Control method, terminal and storage medium of intelligent power amplifier |
| CN113741855A (en) * | 2020-05-27 | 2021-12-03 | 青岛海信移动通信技术股份有限公司 | Audio playing method and terminal |
| CN113741855B (en) * | 2020-05-27 | 2023-10-31 | 青岛海信移动通信技术有限公司 | Audio playing method and terminal |
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Application publication date: 20110323 |