CN104954935A - Audio device and control method thereof - Google Patents
Audio device and control method thereof Download PDFInfo
- Publication number
- CN104954935A CN104954935A CN201410115014.8A CN201410115014A CN104954935A CN 104954935 A CN104954935 A CN 104954935A CN 201410115014 A CN201410115014 A CN 201410115014A CN 104954935 A CN104954935 A CN 104954935A
- Authority
- CN
- China
- Prior art keywords
- temperature
- loudspeaker
- audio device
- operating voltage
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses an audio device having temperature control capability and a control method of the audio device. The audio device includes a digital-analog converting unit, an amplifier, a loudspeaker, a power management unit and a temperature detecting unit. The digital-analog converting unit receives a digital audio signal and converts the digital audio signal to an analog audio signal. The amplifier is coupled to the digital-analog converting unit and amplifies the analog audio signal for producing an amplified analog audio signal. The loudspeaker is coupled to the amplifier and is used for broadcasting the amplified analog audio signal. The power management unit is used for providing a first working voltage to the amplifier and providing a second working voltage to the digital-analog converting unit. The temperature detecting unit is coupled to the loudspeaker and produces a temperature detecting signal according to the temperature of the loudspeaker. The power management unit adjusts the first working voltage and the second working voltage according to the temperature detecting signal. According to the invention, effects of saving electricity and protecting the loudspeaker can be realized.
Description
Technical field
The present invention relates to a kind of audio device; In particular to a kind of audio device and control method thereof of tool temperature control capability.
Background technology
Fig. 1 is the schematic diagram of known audio device 100.Audio device 100 includes gain controller 101, loudspeaker 102, Temperature Detector 103, digital/analog converter 104 and an amplifier 105.Gain controller 101 receives audio signals Dau, produces audio signals Gau after a gain, and after being converted to digital signal by digital/analog converter 104, exporting loudspeaker 102 to play out by amplifier 105 after gain.Temperature Detector 103 detects the temperature of loudspeaker 102, produces a temperature detection signal Td.If the temperature of loudspeaker 102 is more than a preset temperature; gain controller 101 carries out attenuation processing according to the audio signals Dau of temperature detection signal Td to input; reduce loudspeaker 102 broadcast sound volume, reduce power and the operating temperature of loudspeaker 102, to reach effect that cause thermal damage crossed by protection loudspeaker 102.
But the processing mode of known audio device 100 is decayed by audio signals Dau, and now the operating voltage of loudspeaker 102 still maintains fixed size, this kind mode reduced of being originated by signal is wasted causing the power supply of loudspeaker 102.Moreover the temperature detection control mode of known audio device 100, only adjusts up and down at a preset temperature, the accuracy of control still needs to improve.
Summary of the invention
For the problems referred to above, one of object of the embodiment of the present invention, after information loudspeaker temperature being detected, according to the temperature model (thermal model) of each loudspeaker, provides suitable protection mechanism.
For the problems referred to above, one of object of the embodiment of the present invention is providing a kind of not only power saving but also can protect the apparatus and method of loudspeaker.
One embodiment of the invention provide a kind of audio device of tool temperature control capability, comprise a digital/analog converter, an amplifier, loudspeaker, a Power Management Unit and a temperature detecting unit.Digital/analog converter receives a digit news signal, digit news signal is converted to a simulating music signal signal.Amplifier couples digital/analog converter, and amplified analog audio signals simulates audio signals after producing an amplification.Loudspeaker couple amplifier, after playing amplification, simulate audio signals.Power Management Unit in order to provide one first operating voltage to amplifier, and provides one second operating voltage to digital/analog converter.And temperature detecting unit, couple loudspeaker, produce a temperature detection signal according to the temperature of loudspeaker.Wherein, Power Management Unit adjusts the first operating voltage and/or the second operating voltage according to temperature detection signal.
Another embodiment of the present invention provides a kind of control method of audio device, includes the following step: first, according to the characteristic of loudspeaker, and a maximum temperature critical value of setting loudspeaker and a minimum temperature critical value.Detect the temperature of loudspeaker.When loudspeaker temperature exceedes maximum temperature critical value, enter an overheated section operation, downgrade one first operating voltage of amplifier and/or one second operating voltage of digital/analog converter; When loudspeaker temperature is lower than lowest critical value, enters a release section operation section, discharge the first operating voltage and/or the second operating voltage, to allow the temperature return of loudspeaker to higher than minimum temperature critical value.
Another embodiment of the present invention provides a kind of control method of audio device, include the following step: first, according to the characteristic of loudspeaker, multiple temperature-controlled areas section that setting loudspeaker are corresponding, wherein each temperature-controlled area section corresponding one presets operating voltage method of adjustment.Detect the temperature of loudspeaker.Judge temperature falls into which temperature-controlled area section of multiple temperature-controlled areas section.One first operating voltage of amplifier coupled according to the default operating voltage method of adjustment adjustment supply loudspeaker of temperature-controlled area section and/or one second operating voltage of digital/analog converter.
The audio device of the tool temperature control capability of the embodiment of the present invention and control method thereof, after loudspeaker temperature being detected, can adjust the first and/or second operating voltage that power supervisor produces.But not message input signal is increased and decreased, amount capable of reducing power consumption, improve the accuracy controlled.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of a known audio device.
Fig. 2 A shows the schematic diagram of the audio device of the tool temperature control capability of one embodiment of the invention.
Fig. 2 B shows the schematic diagram of the audio device of the tool temperature control capability of another embodiment of the present invention.
Fig. 3 A shows the schematic diagram of the audio device of the tool temperature control capability of another embodiment of the present invention.
Fig. 3 B shows the schematic diagram of the Power Management Unit of one embodiment of the invention.
Fig. 4 A shows the running oscillogram of the audio device of the tool temperature control capability of known technology.
Fig. 4 B shows a running oscillogram of the audio device of the tool temperature control capability of one embodiment of the invention.
Fig. 5 A shows the flow chart of the control method of the audio device of one embodiment of the invention.
Fig. 5 B shows the schematic diagram of the controlling mechanism running of cooperation Fig. 5 A of the audio device of the tool temperature control capability of one embodiment of the invention.
Wherein, description of reference numerals is as follows:
100,200 audio devices
101 gain controllers
201,201a, 201b, 301a, 301b Power Management Unit
102,202,302 loudspeaker
105,203,303 amplifiers
103,205,305 Temperature Detectors
306 power control units
104,204,304 analog/digital conversion unit
301 message processing units
307 interpolation filtering circuit
307a higher frequency unit
307b modulation unit
Com comparator
S0, S1, S2, S3 switch
R1, R2 resistance
Embodiment
Fig. 2 A is the schematic diagram of the audio device 200a of the tool temperature control capability of one embodiment of the invention.Audio device 200a includes Power Management Unit (Power Manager) 201, loudspeaker 202, amplifier 203, digital/analog converter 204 and temperature detecting unit 205.
Digital/analog converter 204 receives a digit news signal Dau, digit news signal Dau is converted to a simulating music signal signal Aau.
Amplifier 203 couples digital/analog converter 204, receives simulating music signal signal Aau, is amplified by simulating music signal signal Aau, to simulate audio signals AAau after producing an amplification and to export loudspeaker 202 to.
Loudspeaker 202 couple this amplifier 203, in order to play the message of amplifying rear simulation audio signals AAau.
Temperature detecting unit 205, couples loudspeaker 202, detects the temperature of loudspeaker 202, and according to the temperature of loudspeaker 202, to produce a temperature detection signal Td.In one embodiment, temperature detecting unit 205 detects the temperature of a resistance in loudspeaker 202.Certainly, if the design of loudspeaker 202 changes, temperature detecting unit 205 can respective design be also detect the temperature of loudspeaker 202 other elements inner or loudspeaker 202 inner space.
Power Management Unit 201 couples a power vd D, in order to provide the first operating voltage Vdd_amp and the second operating voltage Vdd_dac respectively to amplifier 203 and digital/analog converter 204, and supply the size of the first operating voltage Vdd_amp of amplifier 203 and/or the second operating voltage Vdd_dac of digital/analog converter 204 according to temperature detection signal Tdd adjustment.Such as turn down first, second operating voltage Vdd_amp, the Vdd_dac size of supply digital/analog converter 204 and/or amplifier 20, to reduce the volume of loudspeaker 202, and then reduce the temperature of loudspeaker 202.
By this; the audio device 200a of the present embodiment can utilize adjustment amplifier 203 to supply the first operating voltage size Vdd_amp of loudspeaker 202 and/or the second operating voltage Vdd_dac of digital/analog converter 204; reduce the temperature of loudspeaker 202, reach effect of protection loudspeaker 202.
When variations in temperature reaches pre-conditioned, audio device 200a can adjust simultaneously, timesharing or adjust one of them the first operating voltage Vdd_amp and the second operating voltage Vdd_dac, such as, and the large I of the first operating voltage Vdd_amp and the second operating voltage Vdd_dac adjusts arbitrarily according to demand, makes both equal and opposite in directions or unequal.Fig. 2 B shows the schematic diagram of the audio device 200b of the tool temperature control capability of another embodiment of the present invention.Audio device 200b includes one first Power Management Unit 201a, a second source administrative unit 201b, loudspeaker 202, amplifier 203 and a digital/analog converter 204.
The difference of audio device 200b and audio device 200a is, audio device 200b includes two Power Management Unit 201a and 201b.Wherein, the first Power Management Unit 201a couples a power vd D, according to the variations in temperature of loudspeaker 202, adjusts the size that the first Power Management Unit 201a supplies the first operating voltage size Vdd_amp of amplifier 20.The first voltage control signal Vdd_amp_ctr such as according to reaction loudspeaker 202 variations in temperature reduces the first operating voltage Vdd_amp; And second source administrative unit 201b also couples power vd D, according to the variations in temperature of loudspeaker 202, adjustment is supplied to the second operating voltage Vdd_dac of digital/analog converter 204.The second voltage control signal Vdd_dac_ctr such as according to reaction loudspeaker 202 variations in temperature downgrades the second operating voltage Vdd_dac supplying digital/analog converter 204, thus reduces the temperature of loudspeaker 202.
Fig. 3 A shows the schematic diagram of the audio device 300 of the tool temperature control capability of another embodiment of the present invention.Audio device 300 includes a message processing unit (Audio processing unit) 301, one interpolation filtering circuit (Interpolation filter) 307,1 first Power Management Unit 301a, a second source administrative unit 301b, loudspeaker 302, amplifier 303, digital/analog converter 304, temperature detecting unit 305, power control unit 306.Wherein, interpolation filtering circuit 307 includes a higher frequency unit 307a, a modulation unit 307b.
One embodiment of message processing unit 301 can be an equalizer (Equalizer, EQ) or an automatic level control circuit (Automatic Level Control, ALC).In the present embodiment, message processing unit 301 includes a gain controller (not shown), carries out gain process in order to the input audio signals received message processing unit 301, and its yield value is a current gain value.Gain controller is only an embodiment, the present invention is not limited thereto.
Higher frequency unit 307 is in order to adjust audio signals frequency.Then, audio signals, via after modulation unit 307b modulation to pre-set frequency band, exports digit news signal Dau to digital/analog converter 304.
Thereafter, digit news signal Dau is provided to digital/analog converter 304, amplifier 303, loudspeaker 302, first, second Power Management Unit 301a, 301b and audio device 200b process, the function mode of each element is identical with aforementioned operation, repeats no more.The audio device 300 of the present embodiment, in time operating, utilizes temperature detecting unit 305 to detect the temperature of loudspeaker 302, produces temperature detection signal Tdd to power control unit 306.Power control unit 306 produces the first voltage control signal Vdd_amp_ctr and the one second voltage control signal Vdd_dac_ctr of reflection loudspeaker 302 variations in temperature according to temperature detection signal Tdd.Then, the first Power Management Unit 301a adjusts according to the first voltage control signal Vdd_amp_ctr the first operating voltage Vdd_amp being supplied to amplifier 303; Second source administrative unit 301b is also supplied to the second operating voltage Vdd_dac of digital/analog converter 304 according to the second voltage control signal Vdd_dac_ctr adjustment.
Fig. 3 B is the schematic diagram of Power Management Unit one embodiment that the present invention proposes.In the present embodiment, Power Management Unit includes a comparator Com, multiple switch S 0, S1, S2, S3, resistance R1 and R2.Power Management Unit couples a supply voltage VDD, produces output voltage Vo after being multiplied by a ratio.Output voltage Vo is the first voltage control signal vdd_amp_crt or the second voltage control signal vdd_dac_crt, and utilize switch S 0, S1, S2, S3 keying to change the ratio of resistance R1 and R2, output voltage
Mode according to this, Power Management Unit suitably can adjust the voltage swing of supply amplifier or digital/analog converter.Should be noted that the Power Management Unit of the embodiment of the present invention is not limited thereto, can be other elements and form, or component number also can design arbitrarily.Such as, the number of switch is not limited to four, and resistance can be implemented by various transistor or other elements.
Fig. 4 A shows the running oscillogram of the audio device 100 of known technology, please refer to Fig. 1.And Fig. 4 B shows the running oscillogram of audio device 300 1 embodiment that the present invention proposes, please refer to Fig. 3 A.As shown in Figure 4 A, the control mode of known audio device 100 is signal controlling (signal control).When loudspeaker 102 temperature is normal, suppose that input signal that digital/analog converter 104 and amplifier 105 receive is all in the full scale (full scale) of operating voltage, is respectively Vdd_dac=1.8V, Vdd_amp=5V.And when loudspeaker 102 temperature overheating; its Temperature Detector 103 can notify that gain controller 101 reduces input signal size; such as reduce gain 3 decibels (dB) to make to be less than 1.8V at the input signal of digital/analog converter 104; make to be less than 5V at the input signal of amplifier 105 simultaneously; and allow loudspeaker 102 temperature decline, and then reach the effect of protection loudspeaker 102.Please note now, the operating voltage of known technology loudspeaker 102 and digital/analog converter 104 is still 1.8V, and the operating voltage of amplifier 105 is still 5V.
And in figure 4b, when loudspeaker 302 temperature is normal, suppose that input signal that digital/analog converter 304 and amplifier 303 receive is all in the full scale (full scale) of the second, first operating voltage, is respectively Vdd_dac=1.8V, Vdd_amp=5V.When loudspeaker temperature overheating, temperature detecting unit 305 produces a temperature detection signal Tdd and notifies power control unit 306, produces the first voltage control signal Vdd_amp_ctr and/or the second voltage control signal Vdd_dac_ctr to the first Power Management Unit 301a and/or second source administrative unit 301b.First Power Management Unit 301a and/or second source administrative unit 301b downgrades supply the first operating voltage Vdd_amp of amplifier 303 and/or the second operating voltage Vdd_dac of digital/analog converter 304 according to the first voltage control signal Vdd_amp_ctr and/or the second voltage control signal Vdd_dac_ctr respectively, such as downgrade 3 decibels (dB), make the second operating voltage Vdd_dac of digital/analog converter 304 be down to 1.3V by 1.8V, and/or the first operating voltage Vdd_amp of amplifier 303 is down to 3.6V by 5V.Thus, reducing the volume of loudspeaker 302, while loudspeaker 302 are protected, the effect of power saving is also reached.Should be noted, above-mentioned numeral is only example, the present invention is not limited thereto, and can design arbitrarily on demand.
Moreover, in one embodiment of the invention when loudspeaker temperature is too high, the voltage being supplied to digital/analog converter can via low dropout voltage regulator (Low Dropout Regulator, LDO) downgrade, and the output signal stool and urine of sound can and then decline, reach reduction volume and reduce power consumption simultaneously, and reach the effect of being lowered the temperature by loudspeaker.In addition, under the condition outputing signal not butt (clipping), also the voltage of supply amplifier is downgraded, just can reach the effect of power saving.One embodiment of the horn control device of the embodiment of the present invention, under the mode not reducing input signal size, downgrades the first operating voltage of amplifier and/or the second operating voltage of digital/analog converter, can reach effect of loudspeaker temperature protection and power saving
Fig. 5 A is the flow chart of audio device control method one embodiment of the present invention.Fig. 5 B is the schematic diagram that audio device one embodiment according to the present invention coordinates the temperature control mechanism of Fig. 5 A to operate.In the embodiment of Fig. 5 B, the temperature control mechanism of audio device is divided into four to operate section, comprises secure section, overheated section, decay section and release section.
Audio device control method includes the following step:
Step S502: start.
Step S504: first, according to horn characteristic, the withstand temperature scope of setting loudspeaker.Audio device is for different horn characteristic, set the maximum temperature critical value (thermal threshold) of the loudspeaker that it couples and a minimum temperature critical value, in the embodiment of Fig. 5 B, maximum temperature critical value is set to 110 degree, and minimum temperature critical value is then 100 degree.Following explanation will represent the highest, minimum temperature critical value respectively with upper and lower limit.Relatively, first, second operating voltage Vdd_amp, Vdd_dac that the Power Management Unit in this audio device provides also have a range intervals, and its bound represents with maximum voltage and minimum voltage in figure 5b.
Step S506: detect loudspeaker temperature.
Step S508: judge that whether temperature is lower than the upper limit 110 degree, if enter step S512; If not, step S510 is entered.
Step S510: when temperature detecting unit detects that loudspeaker temperature is prescribed a time limit higher than upper, judge to enter overheated section (overdrive).Now can trigger the mechanism of decay (attack) voltage, Power Management Unit downgrades supply the first operating voltage Vdd_amp of amplifier and/or the second operating voltage Vdd_dac of digital/analog converter, the output volume of loudspeaker is reduced, make loudspeaker temperature start to decline, this temperature decline section is decay section.
Step S512: judge that whether temperature is higher than lower limit 100 degree, if enter step S516; Enter step S514 if not.
Step S514: when temperature detecting unit detects that loudspeaker temperature is prescribed a time limit lower than lower, represent that current operation must enter release section, in other words, the first operating voltage Vdd_amp now and/or the second operating voltage Vdd_dac is too low, loudspeaker are caused to fail to maintain suitable working temperature, therefore must discharge the first operating voltage Vdd_amp and/or the second operating voltage Vdd_dac, by raising.In brief, in release section, Power Management Unit promotes the second operating voltage Vdd_dac and/or the first operating voltage Vdd_amp voltage, to allow loudspeaker temperature raise, until get back in secure section, reaches maximum message and exports.
Step S516: judge that the temperature of loudspeaker is between bound, temperature control mechanism is maintained at secure section (safe).
Step S518: terminate.
Should be noted, though the present embodiment operates sections for showing with four, but not as limit, the order of these four sections above-mentioned can adjust according to system requirements, each bound temperature is not limited to above-mentioned example and can adjusts according to demand, and each bound temperature is main relevant with the horn characteristic that this audio device couples, and is also not limited to four sections, section can be controlled according to requirements set to be divided into more or less.
Mode according to this; the audio device of the tool temperature control capability that the present invention proposes can utilize adjustment digital/analog converter and amplifier to supply the operating voltage size of loudspeaker; but not only do to increase and decrease to message input signal; loudspeaker temperature can be reduced to reduce the temperature of loudspeaker; and reduce the consumption of voltage further, reach power saving and the effect protecting loudspeaker.
In sum, although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.The technical staff in the technical field of the invention, not departing from these novel spirit and scope, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on the appended claim person of defining.
Claims (11)
1. an audio device, is characterized in that, comprises:
One digital/analog converter, receives a digit news signal, and this digit news signal is converted to a simulating music signal signal;
One amplifier, couples this digital/analog converter, amplifies this simulating music signal signal and simulate audio signals after producing an amplification;
One loudspeaker, couple this amplifier, after playing this amplification, simulate audio signals;
One Power Management Unit, in order to provide one first operating voltage to this amplifier, and provides one second operating voltage to this digital/analog converter; And
One temperature detecting unit, couples this loudspeaker, produces a temperature detection signal according to the temperature of these loudspeaker;
Wherein, this Power Management Unit adjusts this first operating voltage and/or this second operating voltage according to this temperature detection signal.
2. audio device as claimed in claim 1, it is characterized in that, this temperature detecting unit detects the temperature of a resistance in these loudspeaker, to produce this temperature detection signal.
3. audio device as claimed in claim 2, is characterized in that, also comprise a power control unit, produces one first voltage control signal and one second voltage control signal according to this temperature detection signal.
4. audio device as claimed in claim 3, it is characterized in that, this Power Management Unit comprises:
One first Power Management Unit, couples a power supply, downgrades this first operating voltage size of this amplifier of supply, to reduce volume and the temperature of these loudspeaker according to this first voltage control signal; And
One second source administrative unit, couples this power supply, downgrades this second operating voltage size of supply digital/analog converter, to reduce volume and the temperature of these loudspeaker according to this second voltage control signal.
5. audio device as claimed in claim 1, it is characterized in that, couple a Received signal strength circuit, this Received signal strength circuit includes:
One message processing unit, includes a gain controller, and this message processing unit receives this digit news signal, and this gain controller carries out gain process to this digit news signal, and wherein this yield value is a current gain value;
One higher frequency unit, in order to adjust the frequency of this digit news signal; And
One modulation unit, in order to this digit news signal to pre-set frequency band of modulation, to export this digital/analog converter to.
6. audio device as claimed in claim 1, wherein, this Power Management Unit includes a comparator, multiple switch and one first resistance and one second resistance, this Power Management Unit couples a supply voltage, an output voltage is produced after this supply voltage is multiplied by a ratio, wherein this output voltage is this first voltage control signal or this second voltage control signal, and this Power Management Unit utilizes the keying of the plurality of switch to change this ratio of this first resistance and this second resistance.
7. audio device as claimed in claim 1, wherein these loudspeaker are provided with a minimum temperature critical value and a maximum temperature critical value.
8. audio device as claimed in claim 1, wherein when this temperature detecting unit detects that the temperature of these loudspeaker exceedes this maximum temperature critical value, this Power Management Unit triggers an evanescent voltage mechanism, downgrades this first operating voltage and/or this second operating voltage.
9. audio device as claimed in claim 1, when wherein this temperature detecting unit detects the temperature of these loudspeaker lower than this minimum temperature critical value, this Power Management Unit triggers a release voltage mechanism, promoting or transferring this first operating voltage high and/or this second operating voltage.
10. a control method for audio device, this audio device comprises an amplifier and a digital/analog converter, and this control method comprises:
According to the characteristic of loudspeaker, set a maximum temperature critical value and a minimum temperature critical value of these loudspeaker;
Detect the temperature of these loudspeaker;
When this loudspeaker temperature exceedes this maximum temperature critical value, enter an overheated section operation, downgrade one first operating voltage of this amplifier and/or one second operating voltage of this digital/analog converter;
When this loudspeaker temperature is lower than this lowest critical value, enters a release section operation section, discharge this first operating voltage and/or this second operating voltage, to allow the temperature return of these loudspeaker to higher than this minimum temperature critical value.
11. methods as claimed in claim 10, wherein when this temperature is between the highest critical value and this lowest critical value, this audio device maintains operation in a secure section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115014.8A CN104954935B (en) | 2014-03-26 | 2014-03-26 | Audio device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115014.8A CN104954935B (en) | 2014-03-26 | 2014-03-26 | Audio device and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104954935A true CN104954935A (en) | 2015-09-30 |
| CN104954935B CN104954935B (en) | 2018-11-06 |
Family
ID=54169219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410115014.8A Active CN104954935B (en) | 2014-03-26 | 2014-03-26 | Audio device and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104954935B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125880A (en) * | 2016-06-14 | 2016-11-16 | 乐视控股（北京）有限公司 | The method for controlling volume of a kind of intelligent terminal and device and storage medium |
| CN106792413A (en) * | 2016-11-15 | 2017-05-31 | 四川长虹电器股份有限公司 | Verify the experimental system and method for loudspeaker reliability |
| CN110113694A (en) * | 2019-04-30 | 2019-08-09 | 广州三星通信技术研究有限公司 | Method and apparatus for controlling audio broadcasting in the electronic device |
| CN110768632A (en) * | 2018-07-27 | 2020-02-07 | 瑞昱半导体股份有限公司 | Adaptive temperature audio amplifier device and control method thereof |
| CN111988706A (en) * | 2019-05-23 | 2020-11-24 | 瑞昱半导体股份有限公司 | Audio playing device and method |
| CN112468633A (en) * | 2020-11-30 | 2021-03-09 | 维沃移动通信有限公司 | Method and device for adjusting loudspeaker, electronic equipment and medium |
| US11750993B2 (en) | 2019-10-30 | 2023-09-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for processing information, terminal device, and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060015199A1 (en) * | 2004-07-14 | 2006-01-19 | Kabushiki Kaisha Toshiba | Audio signal processing apparatus and audio signal processing method |
| KR20070048067A (en) * | 2005-11-03 | 2007-05-08 | 삼성전자주식회사 | Method and apparatus for controlling ouput power optimized in headphone in digital power amp |
| CN101507105A (en) * | 2006-08-21 | 2009-08-12 | 美国思睿逻辑有限公司 | Method and apparatus for controlling a selectable voltage audio power output stage |
| CN101789766A (en) * | 2009-01-23 | 2010-07-28 | 瑞昱半导体股份有限公司 | Gain adjustment device and method |
| CN102468808A (en) * | 2010-11-05 | 2012-05-23 | 凌通科技股份有限公司 | Thermal protection circuit and method of audio power amplification circuit |
| CN103500574A (en) * | 2012-08-16 | 2014-01-08 | 万喻 | Intelligent electronic horn and achieving method thereof |
-
2014
- 2014-03-26 CN CN201410115014.8A patent/CN104954935B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060015199A1 (en) * | 2004-07-14 | 2006-01-19 | Kabushiki Kaisha Toshiba | Audio signal processing apparatus and audio signal processing method |
| KR20070048067A (en) * | 2005-11-03 | 2007-05-08 | 삼성전자주식회사 | Method and apparatus for controlling ouput power optimized in headphone in digital power amp |
| CN101507105A (en) * | 2006-08-21 | 2009-08-12 | 美国思睿逻辑有限公司 | Method and apparatus for controlling a selectable voltage audio power output stage |
| CN101789766A (en) * | 2009-01-23 | 2010-07-28 | 瑞昱半导体股份有限公司 | Gain adjustment device and method |
| CN102468808A (en) * | 2010-11-05 | 2012-05-23 | 凌通科技股份有限公司 | Thermal protection circuit and method of audio power amplification circuit |
| CN103500574A (en) * | 2012-08-16 | 2014-01-08 | 万喻 | Intelligent electronic horn and achieving method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125880A (en) * | 2016-06-14 | 2016-11-16 | 乐视控股（北京）有限公司 | The method for controlling volume of a kind of intelligent terminal and device and storage medium |
| CN106792413A (en) * | 2016-11-15 | 2017-05-31 | 四川长虹电器股份有限公司 | Verify the experimental system and method for loudspeaker reliability |
| CN110768632A (en) * | 2018-07-27 | 2020-02-07 | 瑞昱半导体股份有限公司 | Adaptive temperature audio amplifier device and control method thereof |
| CN110113694A (en) * | 2019-04-30 | 2019-08-09 | 广州三星通信技术研究有限公司 | Method and apparatus for controlling audio broadcasting in the electronic device |
| CN111988706A (en) * | 2019-05-23 | 2020-11-24 | 瑞昱半导体股份有限公司 | Audio playing device and method |
| US11750993B2 (en) | 2019-10-30 | 2023-09-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for processing information, terminal device, and storage medium |
| CN112468633A (en) * | 2020-11-30 | 2021-03-09 | 维沃移动通信有限公司 | Method and device for adjusting loudspeaker, electronic equipment and medium |
| CN112468633B (en) * | 2020-11-30 | 2023-03-24 | 维沃移动通信有限公司 | Loudspeaker adjusting method and device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104954935B (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104954935A (en) | Audio device and control method thereof | |
| TWI592034B (en) | Audio apparatus with thermal controlling ability and the controlling method thereof | |
| CN104469608A (en) | System and method for adjusting microphone functionality | |
| CN109328430A (en) | For the system and method for carrying out prediction switching in audio-frequency amplifier | |
| ATE543341T1 (en) | AUDIO AMPLIFIER WITH LOCAL INTERFACE | |
| CN103812508A (en) | Current sharing device, method and system | |
| CN108563418A (en) | A kind of audio volume adjusting method, device, electronic equipment and storage medium | |
| CN103092246A (en) | System and method for power supply monitoring | |
| CN104485909A (en) | Gain control method and device | |
| CN103533181A (en) | Device and method for awakening external equipment of mobile terminal | |
| CN103402157B (en) | Voicefrequency circuit, audio system and the method eliminating POP noise | |
| KR101573577B1 (en) | Apparatus and method for controlling sound output | |
| CN105451137A (en) | User equipment wake-up method and device | |
| US7339424B2 (en) | Apparatus and method for controlling temperature of electronic apparatus | |
| CN104485910A (en) | Gain control method and device | |
| CN101789766A (en) | Gain adjustment device and method | |
| CN103841492A (en) | Output method of audio signal and apparatus | |
| CN103872885B (en) | A kind of standby power consumption control circuit and method | |
| US9634621B1 (en) | Charge-pump power supply with voltage-headroom-dependent supply voltage | |
| CN111030604B (en) | Method and device for controlling DCDC converter, storage medium and electronic equipment | |
| EP3054624B1 (en) | Method for amplifying a signal and amplifying device | |
| CN203193643U (en) | Optically-controlled digital gain automatic-control optical receiver | |
| US8130982B2 (en) | Signal amplifying apparatus, amplification system, and signal amplification method | |
| CN107864435B (en) | Audio power control method, control circuit and audio equipment | |
| CN109361367A (en) | A kind of frequency conversion automatic gain control equipment suitable for intelligent power output amplification chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |