CN101645697B - System and method for controlling sound volume - Google Patents
System and method for controlling sound volume Download PDFInfo
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- CN101645697B CN101645697B CN2008101458469A CN200810145846A CN101645697B CN 101645697 B CN101645697 B CN 101645697B CN 2008101458469 A CN2008101458469 A CN 2008101458469A CN 200810145846 A CN200810145846 A CN 200810145846A CN 101645697 B CN101645697 B CN 101645697B
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Abstract
The invention relates to a system and a method for controlling sound volume, which is applied to an electronic device which can be connected with various power supply units and is provided with a switching unit used to be connected with the power supply units and a loudspeaker unit used for outputting sound, wherein the power supply units are provided with power supply signals with different magnitudes. The system prestores audio frequency amplification parameter values of an electrical mode of the power supply signals of the corresponding power supply units, detects the electrical mode of the power supply signals through a control module when the switching unit receives one power supply signal of the power supply units, generates control signals according to the electrical mode of the power supply signals, and outputs the control signals to an audio frequency amplifying unit. The audio frequency amplifying unit can select the corresponding audio frequency amplification parameter values according to the control signals to amplify audio frequency signals when receiving the audio frequency signals generated by the electronic device and the control signals, and outputs the audio frequency signals to the loudspeaker unit so as to make the loudspeaker unit output sound with corresponding sound volume. Therefore, the system and the method can properly adjust the sound volume output by the loudspeaker unit.
Description
Technical field
The present invention relates to a kind of sound-volume control system and method, more detailed it, the present invention is a kind of electronic installation that is applied to connect multiple power supply unit and has the speaker unit that is used for connecting the switch unit of this power supply unit and is used for output sound, and is used for adjusting when switching the power supply that power supply unit provided the sound-volume control system and the method for the output volume of electronic installation.
Background technology
In living now, consumption electronic products, for example notebook computer, mobile phone, personal digital assistant etc. are universal day by day, thereby make daily life more convenient.With notebook computer for, become people's routine work and the life in requisite Data Processing instrument, can be used to carry out as word processing, Entertainment and multimedia or the like.
Present notebook computer generally has two power supply units, one for external power source to be civil power handle the back through power supply adaptor (Adaptor) exports, another then is a battery, in most cases use this external power source to power, and, when notebook computer is connected to this external power source, the notebook computer internal circuit with this external power source as default power supply unit and by it this battery is charged simultaneously; Pull out or during not external this external power source, then power until this notebook computer by this battery.
Yet, because the magnitude of voltage that this external power source and battery are exported is also inequality, the voltage that general notebook computer power supply adaptor (Adaptor) is exported is 19 volts, and battery only provides 11.1 volts output voltage, differ bigger, therefore what can produce some problems when actual Switching power is powered.For example, when the user uses by notebook computer as watches film or listen to multi-media player function such as music, if pull out this power supply adaptor this moment, and as mentioned above by this powered battery, or use powered battery earlier, and then plug this power supply adaptor and change by external power source and power, because the audio frequency amplifier in the notebook computer is by above-mentioned two kinds of power supplys power supply equally, in case switch so change appears in power supply unit, then can make this audio frequency amplifier the volume saltus step of output audio signal occur in the moment of switching power supply unit, that is the sound of user institute uppick lightens suddenly or rises violently suddenly, very easily cause user's bad impression thus, when serious, even can influence user's the hearing and the life-span of loudspeaker.
Therefore, how to find a kind of method of the volume difference of being exported can reduce to switch the notebook computer power supply time, to remedy above-mentioned many disadvantages, real is present problem demanding prompt solution.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of sound-volume control system and method, with by suitably adjusting the volume of output, and it is poor to reduce the volume of this electronic installation output sound when power supply switches.
For reaching above-mentioned and other purpose, sound-volume control system provided by the present invention, be applied to connect multiple power supply unit, and electronic installation with the speaker unit that is used for connecting the switch unit of this power supply unit and is used for output sound, wherein, this power supply unit has the power supply signal of different size respectively, and this switch unit is used for when connecting this power supply unit, receive one of them power supply signal of this power supply unit, so that this electronic installation is powered, it is characterized in that, this sound-volume control system comprises: control module, electrically connect with this switch unit, be used for when this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal, and exported, this power supply signal is an output voltage values, and this output voltage values is corresponding one by one with this control signal; And audio amplification unit, electrically connect with this control module, and have a plurality of audio frequency amplifying parameters values and this audio frequency amplifying parameters value is corresponding one by one with this control signal, be used for receiving the control signal that audio signal that this electronic installation produces and this control module are exported, and select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby sound for this speaker unit output respective output volume, when the output voltage values of this power supply unit that is switched than before switching when big, what then this control module produced is the control signal of the less audio frequency amplifying parameters value of correspondence, to reduce the output sound volume by this audio amplification unit; If the output voltage values of this power supply unit that is switched was than before not switching hour, what then this control module produced is the control signal of the bigger audio frequency amplifying parameters value of correspondence, to strengthen the output sound volume by this audio amplification unit.
In one embodiment, this control module comprises: storage element prestores the control signal of a plurality of electrical patterns to power supply signal that should power supply unit; Detecting unit electrically connects with this switch unit, is used for detecting the electrical pattern of this power supply signal when this switch unit receives one of them power supply signal of this power supply unit, and the electrical pattern of this power supply signal of being detected is exported; And the volume control unit, electrically connect with this storage element and detecting unit, be used for electrical mode producing control signal according to this power supply signal, and exported.The electrical pattern of this power supply signal comprises alternating current (AC) powering mode and direct current (DC) powering mode, and this audio amplification unit in the audio frequency amplifying parameters value that sets under this alternating current (AC) powering mode less than the audio frequency amplifying parameters value that under this direct current (DC) powering mode, sets, and under this AC-powered pattern, this power supply unit is for connecting the power supply adaptor (adaptor) of civil power, under this powered by direct current pattern, this power supply unit is a battery.This control module is embedded Control wafer (Embedded Controller; EC).This audio frequency amplifying parameters value is the audio frequency multiplication factor.Pass through two general input and output (General Purpose Input Output between this control module and this audio amplification unit; GPIO) interface carries out the signal transmission.Pass through eight System Management Bus (SystemManagement Bus between this control module and this audio amplification unit; SMBUS) interface carries out the signal transmission.This power supply signal is an output voltage values.This switch unit is the power supply control switching circuit.This speaker unit is loudspeaker.
Corresponding above-mentioned sound-volume control system, method for controlling volume provided by the present invention, be applied to connect multiple power supply unit, and electronic installation with the speaker unit that is used for connecting the switch unit of this power supply unit and is used for output sound, wherein, this power supply unit has the power supply signal of different size respectively, and this switch unit is used for when connecting this power supply unit, receive one of them power supply signal of this power supply unit, so that this electronic installation is powered, it is characterized in that this method for controlling volume comprises: prestore to the audio frequency amplifying parameters of the electrical pattern of power supply signal that should power supply unit; When this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal, this power supply signal is an output voltage values, and this output voltage values is corresponding one by one with this control signal; And when this electronic installation produces audio signal, select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby sound for this speaker unit output respective output volume, wherein, when the output voltage values of this power supply unit that is switched than before switching when big, then this control signal is corresponding less audio frequency amplifying parameters value, to reduce the output sound volume; If the output voltage values of this power supply unit that is switched was than before not switching hour, then this control signal is corresponding bigger audio frequency amplifying parameters value, to strengthen the output sound volume.
In one embodiment, the electrical pattern of this power supply signal comprises alternating current (AC) powering mode and direct current (DC) powering mode, and in the audio frequency amplifying parameters value that sets under this alternating current (AC) powering mode less than the audio frequency amplifying parameters value that under this direct current (DC) powering mode, sets, and under this AC-powered pattern, this power supply unit is for connecting the power supply adaptor (adaptor) of civil power, under this powered by direct current pattern, this power supply unit is a battery.This audio frequency amplifying parameters value is the audio frequency multiplication factor.This power supply signal is an output voltage values.This switch unit is the power supply control switching circuit.This speaker unit is loudspeaker.
Compared with prior art, sound-volume control system of the present invention and method, be earlier by this control module when this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of the power supply signal that detects and export this audio amplification unit to, and this audio amplification unit receives the control signal that audio signal that this electronic installation produces and this control module are exported, and select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby sound for this speaker unit output respective output volume, can suitably adjust the volume of this speaker unit output thus, among the embodiment as this case, under this AC-powered pattern, the selected audio frequency amplifying parameters of this audio amplification unit value is less than selected audio frequency amplifying parameters value under this powered by direct current pattern, the volume that can reduce this electronic installation output sound when power supply switches thus is poor, thereby reach the purpose of this case, and make the sound of user institute uppick more smooth and easy, even unlikelyly influence user's the hearing and the life-span of loudspeaker.
Description of drawings
Fig. 1 is the framework block schematic diagram of sound-volume control system of the present invention;
Fig. 2 is the overall architecture block schematic diagram of Fig. 1 in conjunction with functional module in the control module that is loaded into sound-volume control system of the present invention;
Fig. 3 A and 3B are the framework block schematic diagram of two kinds of execution modes of signal transmission form between control module and audio amplification unit in the sound-volume control system of the present invention; And
Fig. 4 is the flow chart of method for controlling volume of the present invention.
The main element symbol description:
10 power supply units
11 switch units
12 speaker unit
13,13 ', 13 " control module
130 storage elements
131 detecting units
132 volume control unit
14,14 ', 14 " audio amplification unit
S1 to S4 step
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the content that this specification disclosed.The present invention also can be implemented or be used by other different instantiations, and each details in this specification also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 1, be the framework block schematic diagram of sound-volume control system of the present invention.Sound-volume control system of the present invention is applied to connect multiple power supply unit 10 and has the electronic installation of the speaker unit 12 that is used for connecting the switch unit 11 of this power supply unit 10 and is used for output sound, wherein, this power supply unit 10 has the power supply signal of different size respectively, and this switch unit 11 is used for when connecting this power supply unit 10, receive one of them power supply signal of this power supply unit 10, with to this electronic installation power supply.In the present embodiment, this electronic installation is a notebook computer, this power supply unit 10 then is external power source (civil power is handled the back via voltage adapter (Adaptor) transformation and exported) and battery, and it is output voltage values that these two kinds of power supplys have the different electrical power signal, for example this external power source is by exchanging (AC) power supply transformation gained, size can be aforesaid 19 volts, and this battery then is direct current (DC) power supply, and size can be aforesaid 11.1 volts.
Have, in the present embodiment, this switch unit 11 is a power supply switch circuit again, can be used to switch one of them and be this electronic installation power supply in power supply units 10 such as said external voltage, battery, and this speaker unit 12 can for example be common loudspeaker then.
Sound-volume control system of the present invention includes control module 13 and audio amplification unit 14.
This control module 13 electrically connects with this switch unit 11, be used for when this switch unit 11 receives one of them power supply signal of these power supply units 10, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal, and exported.In the present embodiment, this electronic installation is a notebook computer as previously mentioned, and this control module 13 then can for example be embedded Control wafer (the Embedded Controller in the notebook computer; EC), be used for controlling some underlying device, or carry out for example switching on and shutting down etc. of some basic functions for example such as keyboard, slide-mouse, fan, indicator light etc., the present invention then by for these control module 13 load modules to realize above-mentioned functions; Simultaneously, in the present embodiment, the electrical pattern that this control module 13 is detected comprises alternating current (AC) powering mode and direct current (DC) powering mode, and when this electronic installation be notebook computer when being in this alternating current (AC) powering mode, employed power supply unit 10 promptly connects the power supply adaptor (adaptor) of civil power for this external power source; In addition, when this electronic installation was in this direct current (DC) powering mode, 10 of employed power supply units were battery.And this control signal is an enable signal, and selects to trigger the corresponding audio amplifying parameters at this audio amplification unit 14, will be described in detail later herein.
This audio amplification unit 14 electrically connects with this control module 13, and has an audio frequency amplifying parameters value of a plurality of control signals of a plurality of correspondences, be used for receiving the control signal that audio signal that this electronic installation produces and this control module 13 are exported, and select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit 12 according to this to, thereby export the sound of respective output volume for this speaker unit 12.In the present embodiment, this audio amplification unit 14 in the audio frequency amplifying parameters value that sets under this AC-powered pattern less than the audio frequency amplifying parameters value that under this powered by direct current pattern, sets, and this audio amplification unit 14 can be common amplifier (Amplifier), and having can be for the function of setting audio amplifying parameters value, for example can preestablish various amplifying parameters value for you to choose for edit routine for the logic programmable device, and this amplifying parameters value is a multiplication factor in the present embodiment, with decibel (db) is unit, and its to can be used to this electronic installation be the sound of the audio signal that produces of notebook computer such as microphone input, the audio signal of multimedia file etc. is exported after processing and amplifying.
See also Fig. 2, from the above, for reaching above-mentioned functions, control module 13 of the present invention is loaded and is comprised at least: storage element 130, detecting unit 131 and volume control unit 132.
This storage element 130 prestores the control signal of a plurality of electrical patterns to power supply signal that should power supply unit 10.In the present embodiment, this storage element 130 can be memory, memory body, data bank etc. for example, and the power supply signal of this each power supply unit 10 is that output voltage values can be for example with the corresponding one by one arrangement of tabulation mode with corresponding control signal.
This detecting unit 131 electrically connects with this switch unit 130, be used for when this switch unit 11 receives one of them power supply signal of these power supply units 10, detect the electrical pattern of this power supply signal, and the electrical pattern of this power supply signal of being detected is exported.In the present embodiment, this detecting unit 131 promptly detect switch 10 out-put supply signals of power supply unit (being output voltage values) electrical pattern (promptly exchange (AC) powering mode or direct current (DC) powering mode) determine to power by in two which, yet need to prove, in other embodiments, if this power supply unit 10 is more than two, the power supply signal that then also can detect this power supply unit 10 is an output voltage values doing identification, but not only exceeds with present embodiment.
This volume control unit 132 electrically connects with this storage element 130 and detecting unit 131, is used for electrical mode producing control signal according to this power supply signal, and is exported.In the present embodiment, as previously mentioned, if detect institute's Switching power for the external power source of Alternating Current Power Supply pattern is provided, then correspondence is searched the control signal content of the corresponding electrical pattern that detects in this storage element 130, and then can correspondingly generate this control signal and export this audio amplification unit 14 to.
As mentioned above, the function of sound-volume control system of the present invention is when this switch unit 11 Switching powers are powered, the dynamic audio frequency amplifying parameters value of setting audio amplifying unit 14, suitably to adjust this speaker unit output and volume, thereby the volume that can reduce this electronic installation output sound when power supply switches is poor, so if the output voltage values of the power supply unit 10 that switched is than before switching when big, then this audio amplification unit 14 can be set less audio frequency amplifying parameters value to reduce the output sound volume; Otherwise, if power supply unit 10 voltage ratios of being switched were not switched preceding hour, then this audio amplification unit 14 can be set bigger audio frequency amplifying parameters to strengthen the output sound volume, correspondingly, sound-volume control system of the present invention can reach and reduce the purpose of this electronic installation in the volume difference of Switching power time institute output sound.
Know clearly it, when sound-volume control system of the present invention is applied on the aforementioned notebook computer, because notebook computer can connect the battery with 11.1 volts of output voltages, two kinds of power supply units 10 of external power source with 19 volts of output voltages, so just can by the electrical pattern of voltage (being Alternating Current Power Supply pattern or the direct current supply pattern) mode of this power supply unit 10 of detection determine the audio frequency amplifying parameters that should select, when detecting the Alternating Current Power Supply pattern (when using this external power source), because its output voltage values is bigger 19 volts, then correspond to this audio amplification unit 14 and set less volume amplifying parameters value as 18 decibels, otherwise, if detect when detecting the direct current supply pattern when using powered battery (even), because of institute's output voltage values is less 11.1 volts, then set bigger volume amplifying parameters as 36 decibels etc.
In the present embodiment, can connect this control module 13 and audio amplification unit 14 by certain data transmission interface with transmission signals, so this control signal is a digital signal.As previously mentioned, all audio frequency amplifying parameters values of this volume amplifying unit 13 all can preestablish to be finished, that is this volume amplifying unit 13 can be earlier to be set with a plurality of audio frequency amplifying parameters values by programming mode available, the control signal that then only need receive the certain format that this control module 13 exported then can enable the corresponding audio amplifying parameters for use.
See also Fig. 3 A to 3B, be used for illustrating control module 13 ' and 13 in the sound-volume control system of the present invention " and audio amplification unit 14 ' and 14 " between signal transmission form.And as shown in Figure 3A, this control module 13 ' is by two general input and output (General Purpose InputOutput; GPIO) interface link to each other with this audio amplification unit 14 ' transmit corresponding form control signal to set corresponding volume amplifying parameters, because everybody level all can numeral 0 or 1 be represented, promptly with 0 expression low level, 1 expression high level, then the control signal of this two address can have four kinds of forms " 00 ", " 01 ", " 10 ", " 11 ", control signal in the present embodiment then has 4 kinds of forms, and all can be corresponding to different audio frequency amplifying parameters values, " 12db " of for example corresponding " 00 ", " 18db " of corresponding " 01 ", " 24db " of corresponding " 10 ", and " 36db " of corresponding " 11 ", promptly there are four kinds of audio frequency amplifying parameters values available, certainly the power supply of power supply unit 10 only has two kinds in the present embodiment, be external power source and battery, then only need preestablishing wherein, two kinds of control signals get final product, during as the power supply of power supply externally, corresponding to generate and send " 01 " to this audio amplification unit 14 ' setting audio amplifying parameters be 18 decibels, and when powered battery, generation is also sent " 11 " to this audio amplification unit 14 ', and the setting size is 36 decibels an audio frequency amplifying parameters; In addition, for another example shown in Fig. 3 B, this control module 13 " also can pass through eight System Management Bus (System Management Bus; SMBUS) interface is connected in this audio amplification unit 14 " transmit the control signal of corresponding form; can correspondingly generate 256 (eight promptly have 28 power kinds) and plant control signal; also can be in advance corresponding to set 256 volume amplifying parameters values available at this audio amplification unit, its quantity can change with the address of coffret and do corresponding change certainly.
Have, though in the present embodiment, this control signal is a digital electric signal again, yet under other embodiment, its form can be changed according to actual needs, only need reach can enable pairing audio frequency amplifying parameters and get final product, but not exceed with present embodiment.
In addition, as previously mentioned, the corresponding relation of this control signal and this audio frequency amplifying parameters also can be set up when this audio amplification unit 14 is preset the audio frequency amplifying parameters.
See also Fig. 4, by as seen above-mentioned, the present invention also provides a kind of method for controlling volume, the electronic installation that is applied to connect multiple power supply unit 10 and has the speaker unit 12 that is used for connecting the switch unit 11 of this power supply unit 10 and is used for output sound, wherein, this power supply unit 10 has the power supply signal of different size respectively, and this switch unit 11 is used for when connecting this power supply unit 10, receive one of them power supply signal of this power supply unit 10, so that this electronic installation is powered, this method for controlling volume comprises the steps:
In step S1, prestore audio frequency amplifying parameters to the electrical pattern of power supply signal that should power supply unit 10.In the present embodiment, as mentioned above, this electronic installation is a notebook computer, this power supply unit 10 is external power source and battery, the control signal (promptly as above-mentioned digital signals such as " 01 ") that this step promptly prestores and distinguishes corresponding battery or external power source, can be as described above with the power supply signal of this each power supply unit 10 and corresponding control signal content with the corresponding one by one arrangement of tabulation mode, be " AC/19V, 01 " as the order of corresponding external power source.Then carry out step S2.
In step S2, when this switch unit 11 receives one of them power supply signal of these power supply units 10, detect the electrical pattern of this power supply signal.In the present embodiment, as mentioned above, this power supply unit 10 is external power source (being that civil power is through power supply adaptor (Adaptor) output) and battery, and this power supply signal is output voltage values, this step is promptly when switching power supply unit 10, and the electrical pattern (promptly exchange (AC) power or direct current (DC) is powered) of switching the output voltage values of power supply unit 10 by detecting determines that this electronic installation is to be powered by in two which.Then carry out step S3.
In step S3, generate the control signal of the corresponding electrical pattern that detects according to the electrical pattern of this power supply signal and the content that prestored.In the present embodiment, as previously mentioned, for example this electronic installation is just powered by external power source, is " AC/19V, 01 " in the corresponding clauses and subclauses that prestored then, can therefrom extract " 01 " and generate control signal output.Then carry out step S4.
In step S4, when this electronic installation produces audio signal, choose corresponding volume amplifying parameters value amplifying this audio signal according to this control signal, and export this speaker unit 12 (being loudspeaker) according to this to, thereby for the sound of these speaker unit 12 output respective output volume.
Compared with prior art, sound-volume control system of the present invention and method, be earlier by this control module when this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal and export this audio amplification unit to, and this audio amplification unit receives the control signal that audio signal that this electronic installation produces and this control module are exported, and select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby sound for this speaker unit output respective output volume, can suitably adjust the volume of this speaker unit output thus, among the embodiment as this case, under this AC-powered pattern, the audio frequency amplifying parameters value that this audio amplification unit sets is less than the audio frequency amplifying parameters value that sets under this powered by direct current pattern, the volume that can reduce this electronic installation output sound when power supply switches thus is poor, thereby reach the purpose of this case, and make the sound of user institute uppick more smooth and easy, even unlikelyly influence user's the hearing and the life-span of loudspeaker.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention, claim is listed as the aforementioned.
Claims (14)
1. sound-volume control system, the electronic installation that is applied to connect multiple power supply unit and has the speaker unit that is used for connecting the switch unit of this power supply unit and is used for output sound, wherein, this power supply unit has the power supply signal of different size respectively, and this switch unit is used for when connecting this power supply unit, receives one of them power supply signal of this power supply unit, with to this electronic installation power supply, it is characterized in that this sound-volume control system comprises:
Control module, electrically connect with this switch unit, be used for when this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal, and exported, this power supply signal is an output voltage values, and this output voltage values is corresponding one by one with this control signal; And
Audio amplification unit, electrically connect with this control module, and have a plurality of audio frequency amplifying parameters values and this audio frequency amplifying parameters value is corresponding one by one with this control signal, be used for receiving the control signal that audio signal that this electronic installation produces and this control module are exported, and select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby export the sound of respective output volume for this speaker unit
When the output voltage values of this power supply unit that is switched than before switching when big, then this control module produced is the control signal of corresponding less audio frequency amplifying parameters value, to reduce the output sound volume by this audio amplification unit; If the output voltage values of this power supply unit that is switched was than before not switching hour, what then this control module produced is the control signal of the bigger audio frequency amplifying parameters value of correspondence, to strengthen the output sound volume by this audio amplification unit.
2. sound-volume control system according to claim 1, wherein, this control module comprises:
Storage element prestores the control signal of a plurality of electrical patterns to power supply signal that should power supply unit;
Detecting unit electrically connects with this switch unit, is used for detecting the electrical pattern of this power supply signal when this switch unit receives one of them power supply signal of this power supply unit, and the electrical pattern of this power supply signal of being detected is exported; And
The volume control unit electrically connects with this storage element and detecting unit, is used for electrical mode producing control signal according to this power supply signal, and is exported.
3. sound-volume control system according to claim 1 and 2 is characterized in that, the electrical pattern of this power supply signal comprises AC-powered pattern and powered by direct current pattern.
4. sound-volume control system according to claim 3 is characterized in that, this audio amplification unit in the audio frequency amplifying parameters value that sets under this AC-powered pattern less than the audio frequency amplifying parameters value that under this powered by direct current pattern, sets.
5. sound-volume control system according to claim 1 is characterized in that, this control module is the embedded Control wafer.
6. sound-volume control system according to claim 1 is characterized in that, this audio frequency amplifying parameters value is the audio frequency multiplication factor.
7. sound-volume control system according to claim 1 is characterized in that, carries out the signal transmission by two universal input/output interfaces between this control module and this audio amplification unit.
8. sound-volume control system according to claim 1 is characterized in that, carries out the signal transmission by eight System Management Bus interfaces between this control module and this audio amplification unit.
9. sound-volume control system according to claim 1 is characterized in that, this switch unit is the power supply control switching circuit.
10. method for controlling volume, the electronic installation that is applied to connect multiple power supply unit and has the speaker unit that is used for connecting the switch unit of this power supply unit and is used for output sound, wherein, this power supply unit has the power supply signal of different size respectively, and this switch unit is used for when connecting this power supply unit, receives one of them power supply signal of this power supply unit, with to this electronic installation power supply, it is characterized in that this method for controlling volume comprises:
Prestore to the audio frequency amplifying parameters value of the electrical pattern of power supply signal that should power supply unit;
When this switch unit receives one of them power supply signal of this power supply unit, detect the electrical pattern of this power supply signal, and according to the electrical mode producing control signal of this power supply signal, this power supply signal is an output voltage values, and this output voltage values is corresponding one by one with this control signal; And
When this electronic installation produces audio signal, select corresponding audio amplifying parameters value to amplify this audio signal according to this control signal, and export this speaker unit according to this to, thereby sound for this speaker unit output respective output volume, wherein, when the output voltage values of this power supply unit that is switched than before switching when big, then this control signal is corresponding less audio frequency amplifying parameters value, to reduce the output sound volume; If the output voltage values of this power supply unit that is switched was than before not switching hour, then this control signal is corresponding bigger audio frequency amplifying parameters value, to strengthen the output sound volume.
11. method for controlling volume according to claim 10 is characterized in that, the electrical pattern of this power supply signal comprises AC-powered pattern and powered by direct current pattern.
12. method for controlling volume according to claim 11 is characterized in that, in the audio frequency amplifying parameters value that sets under this AC-powered pattern less than the audio frequency amplifying parameters value that under this powered by direct current pattern, sets.
13. method for controlling volume according to claim 10 is characterized in that, this audio frequency amplifying parameters value is the audio frequency multiplication factor.
14. method for controlling volume according to claim 10 is characterized in that, this switch unit is the power supply control switching circuit.
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| WO2012069973A1 (en) * | 2010-11-24 | 2012-05-31 | Koninklijke Philips Electronics N.V. | A device comprising a plurality of audio sensors and a method of operating the same |
| CN102098017B (en) * | 2010-11-29 | 2014-03-12 | 深圳创维－Rgb电子有限公司 | Volume control circuit and device as well as multimedia equipment |
| CN102855905B (en) * | 2011-06-29 | 2016-10-05 | 富泰华工业（深圳）有限公司 | Audio playing apparatus and method for controlling volume thereof |
| TWI557552B (en) * | 2014-12-12 | 2016-11-11 | 廣達電腦股份有限公司 | Sensor systems |
| CN108522221A (en) * | 2018-04-23 | 2018-09-14 | 台州创投环保科技有限公司 | A kind of agricultural irrigation systems based on agriculture big data |
| CN112420083B (en) * | 2020-10-23 | 2022-07-22 | 东风汽车股份有限公司 | Vehicle-mounted audio and video 12V and 24V power supply universal control system and method |
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