CN102541143A - Method for dynamically adjusting power consumption of audio decoder, system and multimedia equipment - Google Patents
Method for dynamically adjusting power consumption of audio decoder, system and multimedia equipment Download PDFInfo
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- CN102541143A CN102541143A CN2010105985444A CN201010598544A CN102541143A CN 102541143 A CN102541143 A CN 102541143A CN 2010105985444 A CN2010105985444 A CN 2010105985444A CN 201010598544 A CN201010598544 A CN 201010598544A CN 102541143 A CN102541143 A CN 102541143A
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Abstract
The invention provides a method for dynamically adjusting power consumption of an audio decoder, a system and multimedia equipment, which are applicable to the technical field of multimedia. The method includes detecting output power or audio input signals in real time; and dynamically adjusting working voltage and/or direct-current bias current of the audio decoder according to the detected output power or the detected audio input signals. The output power or the audio input signals is detected in real time, the working voltage and/or the direct-current bias current of the audio decoder is dynamically adjusted according to the detected output power or the audio input signals, accordingly, the power consumption of the audio decoder can be dynamically adjusted, and work efficiency of the audio decoder is improved to the greatest extent.
Description
Technical field
The invention belongs to multimedia technology field, relate in particular to a kind of method, system and multimedia equipment of dynamic adjustment audio decoder power consumption.
Background technology
Along with the widespread use of mobile multimedia equipment, the power-efficient of the audio decoder in the mobile multimedia equipment also receives extensive concern because when the efficient of mobile multimedia equipment is higher then service time long; Remove frequent charging incident from; Otherwise, then to often consider the charging incident of multimedia equipment, very inconvenient; Especially in the occasion of being inconvenient to charge, the power supply service efficiency of audio decoder seems more important.Usually for the power supply service efficiency of the audio decoder that promotes mobile multimedia equipment, the developer tries hard to reduce to the stand-by power consumption of equipment minimum under the prerequisite of obtained performance index.Yet, equipment in use, power-efficient often is subject to the energy loss of equipment self, therefore, the power consumption of the audio decoder of prior art adjustment can't realize dynamic adjustment.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of dynamic adjustment audio decoder power consumption, and the power consumption adjustment that is intended to solve the audio decoder of prior art can't realize the dynamically problem of adjustment.
The embodiment of the invention is achieved in that a kind of method of dynamic adjustment audio decoder power consumption, and said method comprises the steps:
Detect the size of output power or audio input signal in real time;
According to the output power of said detection or the size of audio input signal, dynamically adjust the WV and/or the dc bias current of audio decoder.
The embodiment of the invention also provides a kind of system of dynamic adjustment audio decoder power consumption, and said system comprises:
Detecting unit is used for detecting in real time the size of output power or audio input signal;
Adjustment unit is used for dynamically adjusting the WV and/or the dc bias current of audio decoder according to the output power of said detection or the size of audio input signal.
The embodiment of the invention also provides a kind of multimedia equipment, and said multimedia equipment comprises the system of above-mentioned dynamic adjustment audio decoder power consumption.
The embodiment of the invention compared with prior art; Beneficial effect is: in embodiments of the present invention; Through the size of real-time detection output power or audio input signal, and, dynamically adjust the WV and/or the dc bias current of audio decoder according to the output power that detects or the size of audio input signal; Make the power consumption dynamically to adjust audio decoder, promoted the work efficiency of audio decoder to greatest extent.
Description of drawings
Fig. 1 is the structural representation of the audio decoder that provides of the embodiment of the invention one;
Fig. 2 is the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention one;
Fig. 3 is the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention three;
Fig. 4 is the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention four;
Fig. 5 is the structural drawing of the system of the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention five;
Fig. 6 is the structural drawing of the system of the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention six;
Fig. 7 is the structural drawing of the system of the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention eight;
Fig. 8 is the structural drawing of the system of the dynamic adjustment audio decoder power consumption that provides of the embodiment of the invention nine.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention is dynamically adjusted the WV and the dc offset voltage of audio decoder through the size of output power or input audio signal,
The embodiment of the invention is achieved in that a kind of method of dynamic adjustment audio decoder power consumption, and said method comprises the steps:
Detect the size of output power or audio input signal in real time;
According to the output power of said detection or the size of audio input signal, dynamically adjust the WV and/or the dc bias current of audio decoder, make the power consumption can dynamically adjust audio decoder, promoted the work efficiency of audio decoder to greatest extent.
The embodiment of the invention also provides a kind of system of dynamic adjustment audio decoder power consumption, and said system comprises:
Detecting unit is used for detecting in real time the size of output power or audio input signal;
Adjustment unit is used for dynamically adjusting the WV and/or the dc bias current of audio decoder according to the output power of said detection or the size of audio input signal.
The embodiment of the invention also provides a kind of multimedia equipment, and said multimedia equipment comprises the system of above-mentioned dynamic adjustment audio decoder power consumption.
The embodiment of the invention is through detect the size of output power or audio input signal in real time; And according to the output power that detects or the size of audio input signal; Dynamically adjust the WV and/or the dc bias current of audio decoder; Make the power consumption dynamically to adjust audio decoder, promoted the work efficiency of audio decoder to greatest extent.
Below in conjunction with specific embodiment realization of the present invention is described in detail:
Embodiment one
The structure of audio decoder sees also Fig. 1; The driving circuit that promotes load comprises analog to digital converter (analog digital conversion; ADC), digital to analog converter (digital analog conversion, DAC) and note amplifier (Amplifier, AMP).Because audio decoder is operated in fixed power source voltage, and is fixedly under the dc bias current condition, therefore minimum for the stand-by power consumption of equipment is reduced to,, selectively open or close certain module usually according to use occasion.For example, when being in broadcast state, then close ADC; When being in recording state, then closing DAC and AMP, thereby reach lifting efficient.The embodiment of the invention proposes dynamically to adjust the technical scheme of audio decoder power consumption on the basis of technique scheme, specifically see also the specific descriptions of Fig. 2:
Fig. 2 shows the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that the embodiment of the invention provides, and details are as follows:
In step S201, detect the size of output power or audio input signal in real time.
In embodiments of the present invention, the step that detects the size of output power or audio input signal in real time is specially:
Judge the residing state of audio decoder.
When judging that audio decoder is in broadcast state, detect the size of output power.
When judging that audio decoder is in recording state, detect the size of audio input signal.
State through to audio decoder is judged, with enforcement output power is perhaps detected the size of audio input signal, can promote efficient so that residing each of audio decoder all can reach optimum power consumption constantly.
In step S202,, dynamically adjust the WV and/or the dc bias current of audio decoder according to the output power that detects or the size of audio input signal.
In embodiments of the present invention, WV and/or the dc bias current of dynamically adjusting audio decoder are so that the size of output power that its coincidence detection arrives or audio input signal.
In embodiments of the present invention; Size through real-time detection output power or audio input signal; And according to the output power that detects or the size of audio input signal; The dynamically WV and/or the dc bias current of adjustment audio decoder make the power consumption that can dynamically adjust audio decoder, have promoted the work efficiency of audio decoder to greatest extent.
Embodiment two
In embodiments of the present invention; Can be through register adjustment control audio decoder functions voltage and/or dc bias current; Perhaps also can be through self-adaptation adjustment control audio decoder functions voltage and/or dc bias current; The concrete mode that adopts can determine according to the actual requirements, at this not in order to restriction the present invention.
In embodiments of the present invention; The process of register adjustment control audio decoder functions voltage and/or dc bias current can adopt following mode: testing circuit is transferred to CPU with detected output power or audio input signal; CPU will receive signal and be given to register; Audio decoder is through reading the value of register, adjustment WV or dc bias current.
Embodiment three
Fig. 3 shows the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that the embodiment of the invention three provides, and details are as follows:
In step S301, detect the size of output power or audio input signal in real time.
In step S302; Judge present output power or the output power of input audio signal and previous moment or the size of input audio signal; When judging present output power or input audio signal greater than the output power of previous moment or input audio signal; Execution in step S303, when judging present output power or input audio signal less than the output power of previous moment or input audio signal, execution in step S304.
In step S303, heighten the WV and/or the dc bias current of audio decoder accordingly.
In step S304, turn down the WV and/or the dc bias current of audio decoder accordingly.
The embodiment of the invention; Realize when the value that output power or audio input signal are arranged changes through deterministic process; According to the trend that changes, all carry out WV and/or the dc bias current of heightening or turn down audio decoder accordingly, make that each constantly all is to give audio decoder input voltage and electric current according to actual conditions; Reduce the loss of energy, promoted efficient.
Embodiment four
Fig. 4 shows the realization flow figure of the method for the dynamic adjustment audio decoder power consumption that the embodiment of the invention four provides, and details are as follows:
In step S401, detect the size of output power or audio input signal in real time.
In step S402; Search detected output power or audio input signal residing interval in the interval table of comparisons of electric current and voltage; The interval table of comparisons of electric current and voltage comprises a plurality of intervals that the output power and the audio input signal of audio decoder are divided, and each is interval corresponding with corresponding work voltage and/or dc bias current with all.
In the embodiment of the invention, can the output power of audio decoder and a plurality of intervals of audio input signal division can according to circumstances be divided between concrete dividing regions, the interval of division is many more, the more approaching actual output power of output power.
In step S403, WV and/or the dc bias current of adjusting audio decoder in real time are interval corresponding WV and/or dc bias current.
The embodiment of the invention is through searching the corresponding relation of output power or audio input signal and WV and/or dc bias current in the interval table of comparisons of electric current and voltage; Simultaneously the WV and/or the dc bias current of audio decoder are regulated, very convenient.
Embodiment five
Fig. 5 shows the structural drawing of the system of the dynamic adjustment audio decoder power consumption that the embodiment of the invention five provides; For the ease of explanation; Only show the part relevant with the embodiment of the invention, this system can be software unit, hardware cell or the soft or hard combining unit that is built in the multimedia equipment.
In embodiments of the present invention, the system that dynamically adjusts the audio decoder power consumption comprises detecting unit 51 and adjustment unit 52, wherein,
Detecting unit 51 detects the size of output power or audio input signal in real time.
According to the output power of detecting unit 51 detections or the size of audio input signal, 52 dynamically adjust the WV and/or the dc bias currents of audio decoders.
In embodiments of the present invention; Detect the size of output power or audio input signal in real time through detecting unit; And according to the output power of detection or the size of audio input signal; Adjustment unit is dynamically adjusted the WV and/or the dc bias current of audio decoder, makes the power consumption can dynamically adjust audio decoder, has promoted the work efficiency of audio decoder to greatest extent.
Embodiment six
Fig. 6 shows the structural drawing of the system of the dynamic adjustment audio decoder power consumption that the embodiment of the invention six provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The difference of the embodiment of the invention and embodiment five is that detecting unit comprises judge module 611 and mode selection module 612, wherein,
When judge module 611 judges that audio decoder is in broadcast state; Mode selection module 612 detects the size of output power; And when judge module 611 judged that audio decoder is in recording state, mode selection module 612 detected the size of audio input signal.
The embodiment of the invention is judged through the state to audio decoder, with enforcement output power is perhaps detected the size of audio input signal, can promote efficient so that residing each of audio decoder all can reach optimum power consumption constantly.
Embodiment seven
In embodiments of the present invention, the adjustment unit among embodiment five and the embodiment six specifically can be through register adjustment audio decoder WV and/or dc bias current; Perhaps through adaptive mode adjustment audio decoder WV and/or dc bias current.
In embodiments of the present invention, the concrete mode that adopts can determine according to the actual requirements, at this not in order to restriction the present invention.
Embodiment eight
Fig. 7 shows the structural drawing of the system of the dynamic adjustment audio decoder power consumption that the embodiment of the invention eight provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
Difference with embodiment six in the embodiment of the invention is that adjustment unit 72 specifically comprises judge module 721, heightens module 722 and turns down module 723.
Wherein, judge module 721 is judged present output power or the output power of input audio signal and previous moment or the size of input audio signal.
When judge module 721 is judged present output power or input audio signal greater than the output power of previous moment or input audio signal, heighten WV and/or dc bias current that module 722 is heightened audio decoder accordingly; When judge module 721 is judged present output power or input audio signal less than the output power of previous moment or input audio signal, turn down WV and/or dc bias current that module 723 is turned down audio decoder accordingly.
The embodiment of the invention; The deterministic process of implementing through judge module realizes when the value that output power or audio input signal are arranged changes; According to the trend that changes,, make that each constantly all is to give audio decoder input voltage and electric current according to actual conditions by heightening module 722 and turning down module 723 and carry out WV and/or the dc bias current of heightening or turn down audio decoder accordingly; Reduce the loss of energy, promoted efficient.
Embodiment nine
Fig. 8 shows the structural drawing of the system of the dynamic adjustment audio decoder power consumption that the embodiment of the invention nine provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
In embodiments of the present invention, adjustment unit 82 specifically comprise search module 821 and the adjustment execution module 822.
Wherein, search module 821 and search detected output power and/or audio input signal residing interval in the interval table of comparisons of electric current and voltage.
In embodiments of the present invention, the interval table of comparisons of electric current and voltage comprises a plurality of intervals that the output power and/or the audio input signal of audio decoder are divided, and each is interval corresponding with corresponding work voltage and/or dc bias current with all.
In sum, the beneficial effect of the embodiment of the invention is:
1, the embodiment of the invention is through detect the size of output power or audio input signal in real time; And according to the output power that detects or the size of audio input signal; Dynamically adjust the WV and/or the dc bias current of audio decoder; Make the power consumption dynamically to adjust audio decoder, promoted the work efficiency of audio decoder to greatest extent.
2, the embodiment of the invention realizes when the value that output power or audio input signal are arranged changes through deterministic process; According to the trend that changes; All carry out WV and/or the dc bias current of heightening or turn down audio decoder accordingly; Make that each constantly all is to give audio decoder input voltage and electric current according to actual conditions, reduced the loss of energy, promoted efficient.
It should be noted that among the said system embodiment that each included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize function corresponding; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition; One of ordinary skill in the art will appreciate that all or part of step that realizes in above-mentioned each embodiment method is to instruct relevant hardware to accomplish through program; Corresponding program can be stored in the computer read/write memory medium; Described storage medium is like ROM/RAM, disk or CD etc.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of dynamically adjusting the audio decoder power consumption is characterized in that said method comprises the steps:
Detect the size of output power or audio input signal in real time;
According to the output power of said detection or the size of audio input signal, dynamically adjust the WV and/or the dc bias current of audio decoder.
2. the method for claim 1 is characterized in that, the WV of said adjustment audio decoder and/or the step of dc bias current are specially:
Register adjustment audio decoder WV and/or dc bias current; Perhaps
Self-adaptation adjustment audio decoder WV and/or dc bias current.
3. like claim 1 or the described method of 2 arbitrary claims, it is characterized in that the WV of said adjustment audio decoder and/or the step of dc bias current are specially:
Judge present output power or the output power of input audio signal and previous moment or the size of input audio signal;
When judging present output power or input audio signal, heighten the WV and/or the dc bias current of said audio decoder accordingly greater than the output power of previous moment or input audio signal;
When judging present output power or input audio signal, turn down the WV and/or the dc bias current of said audio decoder accordingly less than the output power of previous moment or input audio signal.
4. like claim 1 or the described method of 2 arbitrary claims, it is characterized in that the WV of said dynamic adjustment audio decoder and/or the step of dc bias current are specially:
Search said detected output power and/or audio input signal residing interval in the interval table of comparisons of electric current and voltage;
The WV of adjustment audio decoder and/or dc bias current are said interval corresponding WV and/or the dc bias current that finds in real time;
Wherein: the interval table of comparisons of said electric current and voltage comprises a plurality of intervals that the output power and/or the audio input signal of audio decoder are divided, and each is interval corresponding with corresponding work voltage and/or dc bias current with all.
5. dynamic system of adjustment audio decoder power consumption is characterized in that said system comprises:
Detecting unit is used for detecting in real time the size of output power or audio input signal;
Adjustment unit is used for dynamically adjusting the WV and/or the dc bias current of audio decoder according to the output power of said detection or the size of audio input signal.
6. system as claimed in claim 5 is characterized in that, said detecting unit specifically comprises:
Judge module is used to judge the residing state of audio decoder;
Mode selection module is used for when said judge module judges that audio decoder is in broadcast state, detecting the size of output power; And when said judge module judges that audio decoder is in recording state, detect the size of audio input signal.
7. system as claimed in claim 5 is characterized in that, said adjustment unit specifically passes through:
Register adjustment audio decoder WV and/or dc bias current; Perhaps
Self-adaptation adjustment audio decoder WV and/or dc bias current.
8. like the described system of the arbitrary claim of claim 5 to 7, it is characterized in that said adjustment unit specifically comprises:
Judge module is used to judge the output power of present output power or input audio signal and previous moment or the size of input audio signal;
Heighten module, be used for when judge module is judged present output power or input audio signal greater than the output power of previous moment or input audio signal, heightening the WV and/or the dc bias current of said audio decoder accordingly;
Turn down module, be used for when judge module is judged present output power or input audio signal less than the output power of previous moment or input audio signal, turning down the WV and/or the dc bias current of said audio decoder accordingly.
9. like the described system of the arbitrary claim of claim 5 to 7, it is characterized in that said adjustment unit specifically comprises:
Search module, be used for searching said detected output power and/or audio input signal in the residing interval of the interval table of comparisons of electric current and voltage;
The adjustment execution module, the WV and/or the dc bias current that are used for adjusting in real time audio decoder are said interval corresponding WV and/or the dc bias current that module searches arrives of searching;
Wherein: the interval table of comparisons of said electric current and voltage comprises a plurality of intervals that the output power and/or the audio input signal of audio decoder are divided, and each is interval corresponding with corresponding work voltage and/or dc bias current with all.
10. a multimedia equipment is characterized in that, said multimedia equipment comprises the system of the described dynamic adjustment audio decoder power consumption of the arbitrary claim of claim 5 to 9.
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