CN102945010B - Method and device for realizing automatic switching of sound source - Google Patents
Method and device for realizing automatic switching of sound source Download PDFInfo
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- CN102945010B CN102945010B CN201210442925.2A CN201210442925A CN102945010B CN 102945010 B CN102945010 B CN 102945010B CN 201210442925 A CN201210442925 A CN 201210442925A CN 102945010 B CN102945010 B CN 102945010B
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Abstract
The invention discloses a method for realizing automatic switching of sound sources, which comprises the following steps: establishing a connection with an electronic device; detecting the working state of each sound source access interface; and selecting a preset corresponding sound source switching strategy to execute sound source switching according to the working state of each sound source access interface. The method for realizing automatic switching of the sound source can automatically switch the sound source according to the working state of each sound source access interface, reduces the use difficulty of a user and improves the user experience. < | 1- >)
Description
Technical field
The present invention relates to technical field of electronic equipment, automatically switch and realize in particular to a kind of source of soundMethod and device.
Background technology
At present, the size of portable type electronic product is more and more less, therefore can not join for these electronic productsStandby make the device that they can playback high quality sound signal, especially, can be used for micropkonic spaceLittle, so audio power and passband must be restricted in this electronic product, thus, market at presentOn occurred being equipped with additional loudspeaker to be produced by portable electronic to improve for these electronic products provideThe docking unit that the sound of the sound source that product read is played up.
For example, along with iPod, the iPhone of Apple, (iPod and iPhone are AppleRegistration mark) etc. the fast sale of series of products, aiming at apple products provides the docking unit (letter of better tonequalityClaim Docking) also more and more welcomed by the people of product. Current Docking product category on the marketVarious, and function is also more and more abundanter, and its Source source that can support (being signal source) is also more and moreMany, for example these Source sources can be Aux, Bluetooth, iPodDock, FM etc.
But in the time that user need to be switched Source source, traditional method is used Docking exactly conventionallyThe button of panel or remote controller go to realize and switch, and adopt the switching needs that carry out in this way Source sourceUser removes Attended Operation in person, and especially, for the Docking product with distant control function not, user alsoMust go to Docking product placement place, and then carry out the operation of panel button, thereby increase useThe operation easier at family, user experiences poor.
Summary of the invention
In order to solve need to manually participating in of existing in prior art in the time carrying out the switching of Source source, increaseUser use the problem of difficulty, the object of the present invention is to provide a kind of source of sound automatic switchover implementation methodAnd device.
In order to reach object of the present invention, the present invention realizes by the following technical solutions:
A kind of source of sound automatic switchover implementation method, comprising:
Foundation is connected with electronic equipment;
Detect the duty of each source of sound access interface;
Select default corresponding source of sound switchover policy to carry out sound according to the duty of each source of sound access interfaceSwitch in source.
Preferably, described source of sound comprises: Bluetooth, USB, iPodDock, Airplay, FM withAnd Aux, wherein, Bluetooth has limit priority, and USB, iPodDock and Airplay haveIdentical priority, and priority level is low compared with Bluetooth, and FM has compared with USB, iPodDock or AirplayLow priority, Aux has lowest priority.
Preferably, in the time that Bluetooth source of sound access interface detects audio transmission request, select the first soundSource switchover policy is carried out source of sound and is switched, and it comprises the steps:
Judge that whether current source of sound is Bluetooth, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Airplay, iPodDock or USB, if so, continueJudge that whether corresponding source of sound access interface is in broadcast state, if so, send and cease and desist order to correspondingSource of sound access interface, and current source of sound is switched to Bluetooth, if corresponding source of sound access interface is notBe in broadcast state, directly current source of sound switched to Bluetooth; Otherwise turn next step;
Judge whether current source of sound is FM, if so, continue to judge that whether FM source of sound access interface is in oneselfMoving tuning state, if so, stops tuning, and current source of sound is switched to Bluetooth, if FM source of soundAccess interface is not in automatic channel search state, directly current source of sound is switched to Bluetooth; OtherwiseTurn next step;
Judge and show that current source of sound is Aux, and directly current source of sound is switched to Bluetooth.
Preferably, in the time that iPodDock source of sound access interface detects that iPodDock inserts, select the second soundSource switchover policy is carried out source of sound and is switched, and it comprises the steps:
Judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay or USB, if so, judgementCorresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, if not,Current source of sound is switched to iPodDock; Otherwise turn next step;
Judge whether current source of sound is FM, if so, continue to judge that whether FM source of sound access interface is in oneselfMoving tuning state, if so, keeps current source of sound, if corresponding source of sound access interface is not in playingState, continues to judge whether current frequency exists available stations, if so, keeps current source of sound, ifThere is not available stations in current frequency, current source of sound is switched to iPodDock; Otherwise turn next step;
Judge and show that current source of sound is Aux, and judge that whether Aux source of sound access interface is in broadcast state,If so, keep current source of sound, otherwise, current source of sound is switched to iPodDock.
Preferably, when the broadcast state that iPodDock source of sound access interface detected is from stopping becoming broadcastingTime, the step of carrying out source of sound switching according to the second source of sound switchover policy comprises:
Judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay or USB, if so, continueJudge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, if phaseThe source of sound access interface of answering is not in broadcast state, current source of sound is switched to iPodDock; OtherwiseTurn next step;
Judge whether current source of sound is FM, if so, continue to judge that whether FM source of sound access interface is in oneselfMoving tuning state, if so, stops tuning, and current source of sound is switched to iPodDock, if FM source of soundAccess interface is not in automatic channel search state, directly current source of sound is switched to iPodDock; OtherwiseTurn next step;
Judge and show that current source of sound is Aux, and current source of sound is switched to iPodDock.
Preferably, when the Aux pulse flag bit that Aux source of sound access interface detected is true time, select the 3rdSource of sound switchover policy is carried out source of sound and is switched, and it comprises the steps:
Judge that whether current source of sound is Aux, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay, USB or iPodDock, ifTo continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps currentSource of sound, if corresponding source of sound access interface is not in broadcast state, switches to Aux by current source of sound; NoTurn next step;
Judge and show that current source of sound is FM, judge that whether FM source of sound access interface is in automatic channel search state,If so, keep current source of sound, if not, continue to judge whether current frequency exists available stations,If so, keep current source of sound, if current frequency does not exist available stations, current source of sound is switched to Aux.
Preferably, the step that Aux source of sound access interface arranges Aux pulse flag bit comprises:
Cycle has judged whether the input of Aux analog signal, and if so, counter adds 1, otherwise, will countDevice zero clearing, and Aux pulse mark position is set to vacation;
Judge whether counter is greater than default threshold value, if not, return to previous step, if so, continueContinue and judge whether Aux pulse mark position is true, if Aux pulse mark position is not true, by Aux arteries and veinsIt is true rushing mark position, if Aux pulse mark position is true, returns to previous step.
Preferably, when system powers on, select the 4th source of sound switchover policy carry out source of sound switch, it comprise asLower step:
Judge whether source of sound automatic switching function is opened, if not, the historical sound while obtaining last shutdownSource, and current source of sound is switched to this history source of sound, if source of sound automatic switching function is opened, continue to sentenceWhether disconnected iPodDock and USB source of sound access interface have iPodDock or USB device to insert, if so,Current source of sound is set to iPodDock or USB, if iPodDock and USB source of sound access interface do not haveThere are iPodDock or USB device to insert, continue to judge whether Aux source of sound access interface has analog signalInput, if so, current source of sound is set to Aux, otherwise current source of sound is set to FM.
Preferably, in the time that Airplay source of sound access interface detects audio transmission request, select five notes of traditional Chinese music sourceSwitchover policy is carried out source of sound and is switched, and it comprises the steps:
Judge that whether current source of sound is Airplay, if so, keeps current source of sound; Otherwise turn next step;
Judge that whether current source of sound is the one in iPodDock, Bluetooth or USB, if so, continuesContinue and judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, andTransmission is ceased and desisted order to Airplay source of sound access interface, if corresponding source of sound access interface is not in playingState, switches to Airplay by current source of sound; Otherwise turn next step;
Judge whether current source of sound is FM, if so, continue to judge that whether FM source of sound access interface is in oneselfMoving tuning state, if so, stops tuning, and current source of sound is switched to Airplay, if FM source of sound connectsIncoming interface is not in automatic channel search state, directly current source of sound is switched to Airplay; Otherwise under turningOne step;
Judge and show that current source of sound is Aux, switches to Airplay by current source of sound.
Preferably, in the time that USB source of sound access interface detects that USB device inserts, select the 6th source of sound to switchStrategy execution source of sound switches, and it comprises the steps:
Judge that whether current source of sound is USB, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, iPodDock or Airplay, if so,Continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound,If corresponding source of sound access interface is not in broadcast state, current source of sound is switched to USB; OtherwiseTurn next step;
Judge whether current source of sound is FM, if so, continue to judge that whether FM source of sound access interface is in oneselfMoving tuning state, if so, stops tuning, and current source of sound is switched to USB, if the access of FM source of soundInterface is not in automatic channel search state, directly current source of sound is switched to USB; Otherwise turn next step;
Judge and show that current source of sound is Aux, switches to USB by current source of sound.
A kind of source of sound automatic switchover implement device, comprising:
Communication unit, for setting up and being connected of electronic equipment;
Detecting unit, for detection of the duty of each source of sound access interface;
Performance element, selects default corresponding source of sound for the duty according to each source of sound access interfaceSwitchover policy is carried out source of sound and is switched.
Preferably, described communication unit at least comprises that Bluetooth source of sound access interface, USB source of sound connectMouth, iPodDock source of sound access interface, Airplay source of sound access interface, FM source of sound access interface and AuxThe one of source of sound access interface, wherein, Bluetooth has limit priority, USB, iPodDock withAnd Airplay has identical priority, and priority level is low compared with Bluetooth, and FM has compared with USB, iPodThe priority that Dock or Airplay are low, Aux has lowest priority.
Preferably, described detecting unit comprises:
Aux source of sound input module, for being connected to Aux source of sound access interface, and accesses according to Aux source of soundThe working condition of interface is exported corresponding level signal;
Aux source of sound detection module, for sentencing by the level signal value that reads the output of Aux source of sound input moduleThe duty of disconnected Aux source of sound access interface;
And described performance element comprises:
ADC analog-to-digital conversion module, turns for the level signal of Aux source of sound input module output is carried out to modulusChange and process, and export Aux data signal;
MCU control module, the judged result of obtaining from Aux source of sound detection module for foundation is to power amplifier mouldPiece sends the control instruction of whether playing Aux source of sound;
Power amplifier module, carries out power amplification processing for the control instruction according to obtaining to Aux data signal.
Preferably, described Aux source of sound detection module comprise resistance R 1～R9, capacitor C 1～C4, capacitor C 285,Triode Q14, Q17 and Q18 and diode D5 and D6, wherein, the Aux_R of Aux source of sound input moduleOutput is connected to the base stage of triode Q18 by capacitor C 1, the Aux_L output of Aux source of sound input moduleEnd is connected to the base stage of triode Q17, the grounded emitter of triode Q18, triode Q18 by capacitor C 2Base stage be connected to the first end of resistance R 3 by resistance R 1, the colelctor electrode of triode Q18 is by resistance R 2Be connected to the first end of resistance R 3, the first end of resistance R 3 also passes through capacitor C 3 ground connection, second of resistance R 3End is connected to the first input end of MCU control module, and the base stage of triode Q17 connects by resistance R 4 and R5Be connected to the colelctor electrode of triode Q17, the colelctor electrode of triode Q17 is also connected to the anode of diode D6, threeThe grounded emitter of utmost point pipe Q17, the colelctor electrode of triode Q18 is connected to the anode of diode D5, diodeThe negative electrode of D5 and D6 is all connected to the first end of capacitor C 285 and the first end of resistance R 6, capacitor C 285The second end ground connection and be connected to the second input of MCU control module by capacitor C 4, of resistance R 6Two ends are connected to the base stage of first end and the triode Q14 of resistance R 9, the second end ground connection of resistance R 9,The grounded emitter of triode Q14, the colelctor electrode of triode Q14 connects high level by resistance R 7, and,The colelctor electrode of triode Q14 is also connected to the second input of MCU control module by resistance R 8.
Technical scheme by the invention described above can find out, by the present invention, it can make accordinglySource of sound automatic switchover implement device is after connecting with electronic equipment, by detecting himself each source of soundThe duty of access interface, thus select default corresponding according to the duty of each source of sound access interfaceSource of sound switchover policy carry out source of sound switch, adopt the method, do not need user's sound of controlling equipment in personPanel is switched in source, has reduced user's use difficulty, has improved user's experience, and in addition, the present invention canBe applied to docking unit, in addition, can also expand its be applied to SoundBar, Micro, DVD,On the audio class products such as BD.
Brief description of the drawings
Fig. 1 is the source of sound automatic switchover implementation method schematic flow sheet that the embodiment of the present invention provides;
Fig. 2 is the automatic switchover schematic flow sheet of the bluetooth source of sound that provides of the embodiment of the present invention;
Fig. 3 is the iPodDock source of sound automatic switchover schematic flow sheet that the embodiment of the present invention provides;
Fig. 4 be the broadcast state when the electronic equipment such as iPod/iPhone/iPad that provides of the embodiment of the present invention byStop becoming the source of sound automatic switchover schematic flow sheet while broadcasting;
Fig. 5 is the Aux source of sound automatic switching function module diagram that the embodiment of the present invention provides;
Fig. 6 is the hardware circuit diagram of the Aux source of sound detection module that provides of the embodiment of the present invention;
Fig. 7 is the Aux source of sound automatic switchover schematic flow sheet that the embodiment of the present invention provides;
Fig. 8 is the FM source of sound automatic switchover schematic flow sheet that the embodiment of the present invention provides;
Fig. 9 is the Airplay source of sound automatic switchover schematic flow sheet that the embodiment of the present invention provides;
Figure 10 is the USB source of sound automatic switchover schematic flow sheet that the embodiment of the present invention provides;
Figure 11 is the source of sound automatic switchover implement device structural representation that the embodiment of the present invention provides.
Realization, functional characteristics and the excellent effect of the object of the invention, below in conjunction with specific embodiment andAccompanying drawing is described further.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is done further to retouch in detailState, can be implemented so that those skilled in the art can better understand the present invention also, but the reality of liftingExecute example not as a limitation of the invention.
In the present invention, by reading the state value of each source of sound (Source), and according to different statesRemove to automatically switch to the needed Source of user, the method has been simplified the step of traditional switching Source, forUser provides more comfortable experience.
As shown in Figure 1, a kind of source of sound automatic switchover implementation method that the embodiment of the present invention provides, comprises as followsStep:
S10, foundation are connected with electronic equipment;
S20, detect the duty of each source of sound access interface;
S30, the corresponding source of sound switchover policy of presetting according to the duty selection of each source of sound access interface are heldRow source of sound switches.
Particularly, described source of sound comprises: Bluetooth, USB, iPodDock, Airplay, FM,Aux。
In the present embodiment, suppose that docking unit supports following source of sound: Aux, iPodDock, Bluetooth,FM, Airplay, USB, and acquiescence Source is Aux, presses the order switched after panel Source key successivelyBe:
Aux – iPodDock – Bluetooth – FM – Airplay – USB – Aux so circulates;
And the priority between each source of sound is as follows:
Bluetooth – USB – iPodDock – Airplay – FM – Aux, wherein, data signal has the mould of ratioThe priority that analog signal is higher, for data signal, Bluetooth has limit priority, USB, iPodDock and Airplay have identical priority, and priority level is low compared with Bluetooth, and FM hasThe priority that USB, iPodDock or Airplay are low, Aux has lowest priority.
With reference to figure 2, in the present embodiment, when Bluetooth source of sound access interface detects audio transmission requestTime, to select the first source of sound switchover policy to carry out source of sound and switch, it comprises the steps:
1) judge that whether current source of sound is Bluetooth, if so, keeps current source of sound; Otherwise turn nextStep;
2) judge that whether current source of sound is the one in Airplay, iPodDock or USB, if so, continuesContinue and judge that whether corresponding source of sound access interface is in broadcast state, if so, send and cease and desist order to phaseThe source of sound access interface of answering, and current source of sound is switched to Bluetooth, if corresponding source of sound access interfaceNot in broadcast state, directly current source of sound is switched to Bluetooth; Otherwise turn next step;
3) judge whether current source of sound is FM, if so, continue to judge whether FM source of sound access interface is locatedIn automatic channel search state, if so, stop tuning, and current source of sound is switched to Bluetooth, if FMSource of sound access interface is not in automatic channel search state, directly current source of sound is switched to Bluetooth;Otherwise turn next step;
4) judge and show that current source of sound is Aux, and directly current source of sound is switched to Bluetooth.
With reference to figure 3, in the present embodiment, because the effect of iPodDock is except playing music, also possessThe function of charging, therefore the automatic switchover of iPodDock and the way of bluetooth are different, and user is likelyJust plug iPod in order to charge, when MCU (MicroControllerUnit, micro-place of docking unitReason unit) confirm that all Source are in the time of unactivated state, docking unit just can automatically switchSource to iPodDock.
Particularly, in the time that iPodDock source of sound access interface detects that iPodDock inserts, select the second soundSource switchover policy is carried out source of sound and is switched, and it comprises the steps:
1) judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn nextStep;
2) because Bluetooth, Airplay and USB are all data signal, it is with respect to analog signal toolThere is relatively high priority, therefore in the present embodiment, judge that whether current source of sound is hereWhether one in Bluetooth, Airplay or USB, if so, judge corresponding source of sound access interfaceIn broadcast state, if so, keep current source of sound, if not, current source of sound is switched to iPodDock; Otherwise turn next step;
3) judge whether current source of sound is FM, if so, continue to judge whether FM source of sound access interface is locatedIn automatic channel search state, if so, keep current source of sound, if corresponding source of sound access interface be not inBroadcast state, continues to judge whether current frequency exists available stations, if so, keeps current source of sound,If current frequency does not exist available stations, current source of sound is switched to iPodDock; Otherwise turn next step;
4) judge and show that current source of sound is Aux, and judge that whether Aux source of sound access interface is in playing shapeState, if so, keeps current source of sound, otherwise, current source of sound is switched to iPodDock.
With reference to figure 4, in the present embodiment, when the broadcast state that iPodDock source of sound access interface detected byStop becoming while broadcasting, the step of carrying out source of sound switching according to the second source of sound switchover policy comprises:
1) judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn nextStep;
2) judge that whether current source of sound is the one in Bluetooth, Airplay or USB, if so, continuesContinue and judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, ifCorresponding source of sound access interface is not in broadcast state, current source of sound is switched to iPodDock; NoTurn next step;
3) judge whether current source of sound is FM, if so, continue to judge whether FM source of sound access interface is locatedIn automatic channel search state, if so, stop tuning, and current source of sound is switched to iPodDock, this isBecause now can judge and show that iPod has become broadcast state, because data signal has compared with analog signalHigher priority level, therefore now needs to switch, so that source of sound is switched to iPodDock from FM,If FM source of sound access interface is not in automatic channel search state, directly current source of sound is switched to iPodDock; Otherwise turn next step;
4) judge and show that current source of sound is Aux, similarly, because data signal has compared with analog signalHigh priority level, now need to switch to iPodDock from Aux by current source of sound equally.
With reference to figure 5, in the present embodiment, what export due to Aux source of sound input module 201 is analog signal,Its processing procedure directly enters power amplifier module 303 after ADC analog-to-digital conversion module 301, therefore thinksObtain the broadcast state (play and stop) of analog signal, depending merely on existing circuit is impossible realize. For this reason, increased Aux source of sound detection module 202, it is in order to by reading Aux source of sound input moduleThe level state value of 201 outputs judges the state of source of sound.
With reference to figure 5 and Fig. 6, described Aux source of sound detection module 202 comprise resistance R 1～R9, capacitor C 1～C4,Capacitor C 285, triode Q14, Q17 and Q18 and diode D5 and D6, wherein, Aux source of sound is defeatedThe Aux_R output that enters module 201 is connected to the base stage of triode Q18 by capacitor C 1, Aux source of sound is defeatedThe Aux_L output that enters module 201 is connected to the base stage of triode Q17, triode Q18 by capacitor C 2Grounded emitter, the base stage of triode Q18 is connected to the first end of resistance R 3, three utmost points by resistance R 1The colelctor electrode of pipe Q18 is connected to the first end of resistance R 3 by resistance R 2, the first end of resistance R 3 also passes throughCapacitor C 3 ground connection, the second end of resistance R 3 is connected to the first input end of MCU control module 302, three utmost pointsThe base stage of pipe Q17 is connected to the colelctor electrode of triode Q17, the current collection of triode Q17 by resistance R 4 and R5The utmost point is also connected to the anode of diode D6, the grounded emitter of triode Q17, the colelctor electrode of triode Q18Be connected to the anode of diode D5, the first end that the negative electrode of diode D5 and D6 is all connected to capacitor C 285 withAnd the first end of resistance R 6, the second end ground connection of capacitor C 285 is also connected to MCU control mould by capacitor C 4The second input of piece 302, the second end of resistance R 6 is connected to first end and the triode Q14 of resistance R 9Base stage, the second end ground connection of resistance R 9, the grounded emitter of triode Q14, the current collection of triode Q14The utmost point connects high level by resistance R 7, and the colelctor electrode of triode Q14 is also connected to MCU by resistance R 8The second input of control module 302.
In the time that Aux source of sound has input signal, through triode Q17, Q18 amplify after, enter D6 andC285, obtains a stable level signal after rectifying and wave-filtering, when the base voltage of Q14 be greater than 0.6V timeWait, Q14 is in conducting state, and now MCU reads AUDIO_SENSE pin, low level signal if,Think that Aux has signal input (in broadcast state); Otherwise, triode Q14 cut-off, now MCU readsGet AUDIO_SENSE pin, high level signal if, thinks that Aux does not have signal to input (in stoppingState).
With reference to figure 7, in the present embodiment, when the Aux pulse flag bit of Aux source of sound access interface being detectedFor true time, to select the 3rd source of sound switchover policy to carry out source of sound and switch, it comprises the steps:
1) judge that whether current source of sound is Aux, if so, keeps current source of sound; Otherwise turn next step;
2) judge whether current source of sound is the one in Bluetooth, Airplay, USB or iPodDock,If so, continue to judge that whether corresponding source of sound access interface is in broadcast state, if so, keep working asFront source of sound, if corresponding source of sound access interface is not in broadcast state, switches to Aux by current source of sound;Otherwise turn next step;
3) judge and show that current source of sound is FM, judge that whether FM source of sound access interface is in automatic channel search shapeState, if so, keeps current source of sound, if not continuing to judge whether current frequency exists can electricity consumptionPlatform, if so, keeps current source of sound, if current frequency does not exist available stations, current source of sound is switchedTo Aux.
Continue with reference to figure 7, in the present embodiment, Aux source of sound access interface arranges Aux pulse flag bitStep comprises:
1) cycle has judged whether the input of Aux analog signal, and if so, counter adds 1, otherwise, will countThe zero clearing of number device, and Aux pulse mark position is set to vacation;
2) judge whether counter is greater than default threshold value, if not, return to previous step, if so,Continue to judge whether Aux pulse mark position is true, if Aux pulse mark position is not true, by AuxPulse mark position is true, if Aux pulse mark position is true, returns to previous step 1).
With reference to figure 8, in the present embodiment, because no matter whether the particularity of FM signal (exist available stationsSignal, FM module all can be sent analog signal), so the automatic switchover flow process of FM is only in the time that product is started shootingStart, when other sources of sound are all in halted state time, loom automatic switchover source of sound is to FM.
Particularly, when system powers on, select the 4th source of sound switchover policy carry out source of sound switch, it comprise asLower step:
1) judge whether source of sound automatic switching function is opened, if not, the history while obtaining last shutdownSource of sound, and current source of sound is switched to this history source of sound, if source of sound automatic switching function is opened, continueJudge whether iPodDock and USB source of sound access interface have iPodDock or USB device to insert, if so,Current source of sound is set to iPodDock or USB, if iPodDock and USB source of sound access interface do not haveThere are iPodDock or USB device to insert, continue to judge whether Aux source of sound access interface has analog signalInput, if so, current source of sound is set to Aux, otherwise current source of sound is set to FM.
With reference to figure 9, in the present embodiment, in the time that Airplay source of sound access interface detects audio transmission request,Select five notes of traditional Chinese music source switchover policy to carry out source of sound and switch, it comprises the steps:
1) judge that whether current source of sound is Airplay, if so, keeps current source of sound; Otherwise turn next step;
2) judge whether current source of sound is the one in Bluetooth, iPodDock or USB, if so,Continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound,And send and cease and desist order to Airplay source of sound access interface, if corresponding source of sound access interface is not in broadcastingPut state, current source of sound is switched to Airplay; Otherwise turn next step;
3) judge whether current source of sound is FM, if so, continue to judge whether FM source of sound access interface is locatedIn automatic channel search state, if so, stop tuning, and current source of sound is switched to Airplay, if FM soundSource access interface is not in automatic channel search state, directly current source of sound is switched to Airplay; OtherwiseTurn next step;
4) judge and show that current source of sound is Aux, switches to Airplay by current source of sound.
With reference to Figure 10, in the present embodiment, in the time that USB source of sound access interface detects that USB device inserts,Select the 6th source of sound switchover policy to carry out source of sound and switch, it comprises the steps:
1) judge that whether current source of sound is USB, if so, keeps current source of sound; Otherwise turn next step;
2) judge whether current source of sound is the one in Bluetooth, iPodDock or Airplay, if so,Continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound,If corresponding source of sound access interface is not in broadcast state, current source of sound is switched to USB; OtherwiseTurn next step;
3) judge whether current source of sound is FM, if so, continue to judge whether FM source of sound access interface is locatedIn automatic channel search state, if so, stop tuning, and current source of sound is switched to USB, if FM source of soundAccess interface is not in automatic channel search state, directly current source of sound is switched to USB; Otherwise under turningOne step;
4) judge and show that current source of sound is Aux, switches to USB by current source of sound.
As shown in figure 11, the embodiment of the present invention also provides a kind of source of sound automatic switchover implement device, comprising:
Communication unit 10, for setting up and being connected of electronic equipment;
Detecting unit 20, for detection of the duty of each source of sound access interface;
Performance element 30, selects default corresponding sound for the duty according to each source of sound access interfaceSource switchover policy is carried out source of sound and is switched.
In the present embodiment, described communication unit 10 at least comprises Bluetooth source of sound access interface, USB source of soundAccess interface, iPodDock source of sound access interface, Airplay source of sound access interface, FM source of sound access interfaceAnd the one of Aux source of sound access interface, wherein, Bluetooth has limit priority, USB, iPodDockAnd Airplay has identical priority, and priority level is low compared with Bluetooth, FM have compared with USB,The priority that iPodDock or Airplay are low, Aux has lowest priority.
In the present embodiment, continue with reference to figure 5, described detecting unit 20 comprises:
Aux source of sound input module 201, for being connected to Aux source of sound access interface, and connects according to Aux source of soundThe working condition of incoming interface is exported corresponding level signal;
Aux source of sound detection module 202, for the level letter going out by reading Aux source of sound input module defeated 201Number value judges the duty of Aux source of sound access interface;
And described performance element comprises:
ADC analog-to-digital conversion module, 301 for carrying out mould to the level signal of Aux source of sound input module outputNumber conversion processing, and export Aux data signal;
MCU control module 302, the judged result of obtaining from Aux source of sound detection module for foundation is to power amplifierModule is sent the control instruction of whether playing Aux source of sound;
Power amplifier module 303, carries out power amplification place for the control instruction according to obtaining to Aux data signalReason.
Continue with reference to figure 5 and Fig. 6, described Aux source of sound detection module 202 comprises resistance R 1～R9, electric capacityC1～C4, capacitor C 285, triode Q14, Q17 and Q18 and diode D5 and D6, wherein, AuxThe Aux_R output of source of sound input module is connected to the base stage of triode Q18, Aux source of sound by capacitor C 1The Aux_L output of input module is connected to the base stage of triode Q17, triode Q18's by capacitor C 2Grounded emitter, the base stage of triode Q18 is connected to the first end of resistance R 3, triode by resistance R 1The colelctor electrode of Q18 is connected to the first end of resistance R 3 by resistance R 2, the first end of resistance R 3 is also by electricityHold C3 ground connection, the second end of resistance R 3 is connected to the first input end of MCU control module 302, triodeThe base stage of Q17 is connected to the colelctor electrode of triode Q17, the colelctor electrode of triode Q17 by resistance R 4 and R5Also be connected to the anode of diode D6, the grounded emitter of triode Q17, the colelctor electrode of triode Q18 connectsBe connected to the anode of diode D5, the negative electrode of diode D5 and D6 be all connected to capacitor C 285 first end andThe first end of resistance R 6, the second end ground connection of capacitor C 285 is also connected to MCU control module by capacitor C 4The second input, the second end of resistance R 6 is connected to the first end of resistance R 9 and the base of triode Q14The utmost point, the second end ground connection of resistance R 9, the grounded emitter of triode Q14, the colelctor electrode of triode Q14 is logicalCross resistance R 7 and connect high level, and the colelctor electrode of triode Q14 is also connected to MCU control by resistance R 8The second input of molding piece 302.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,Every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do, or directlyOr be indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (11)
1. a source of sound automatic switchover implementation method, is characterized in that, comprising:
Foundation is connected with electronic equipment;
Detect the duty of each source of sound access interface;
Select default corresponding source of sound switchover policy to carry out sound according to the duty of each source of sound access interfaceSwitch in source;
Described source of sound comprises Bluetooth, USB, iPodDock, Airplay, FM and Aux, wherein,Bluetooth has limit priority, and USB, iPodDock and Airplay have identical priority,And priority level is low compared with Bluetooth, FM has compared with USB, iPodDock or the low priority of Airplay,Aux has lowest priority;
In the time that Bluetooth source of sound access interface detects audio transmission request, select the first source of sound to switch planSlightly carry out source of sound and switch, it comprises the steps:
Judge that whether current source of sound is Bluetooth, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Airplay, iPodDock or USB, if so, continueJudge that whether corresponding source of sound access interface is in broadcast state, if so, send and cease and desist order to correspondingSource of sound access interface, and current source of sound is switched to Bluetooth, if corresponding source of sound access interface is notBe in broadcast state, directly current source of sound switched to Bluetooth; Otherwise turn next step;
Judge whether current source of sound is FM, if so, continue to judge FM source of sound access interface whether inAutomatic channel search state, if so, stops tuning, and current source of sound is switched to Bluetooth, if FM soundSource access interface is not in automatic channel search state, directly current source of sound is switched to Bluetooth; NoTurn next step;
Judge and show that current source of sound is Aux, and directly current source of sound is switched to Bluetooth.
2. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, works as iPodDockSource of sound access interface detects when iPodDock inserts, and selects the second source of sound switchover policy to carry out source of sound and cutsChange, it comprises the steps:
Judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay or USB, if so, continueJudge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, if phaseThe source of sound access interface of answering is not in broadcast state, current source of sound is switched to iPodDock; OtherwiseTurn next step;
Judge whether current source of sound is FM, if so, continue to judge FM source of sound access interface whether inAutomatic channel search state, if so, keeps current source of sound, if FM source of sound access interface is not in automatically searchingPlatform state, continues to judge whether current frequency exists available stations, if so, keeps current source of sound,If current frequency does not exist available stations, current source of sound is switched to iPodDock; Otherwise turn next step;
Judge and show that current source of sound is Aux, and judge that whether Aux source of sound access interface is in broadcast state,If so, keep current source of sound, otherwise, current source of sound is switched to iPodDock.
3. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, when detectingThe broadcast state of iPodDock source of sound access interface from stop becoming broadcasting time, switch according to the second source of soundThe step that strategy execution source of sound switches comprises:
Judge that whether current source of sound is iPodDock, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay or USB, if so, continueJudge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, if phaseThe source of sound access interface of answering is not in broadcast state, current source of sound is switched to iPodDock; OtherwiseTurn next step;
Judge whether current source of sound is FM, if so, continue to judge FM source of sound access interface whether inAutomatic channel search state, if so, stops tuning, and current source of sound is switched to iPodDock, if FMSource of sound access interface is not in automatic channel search state, directly current source of sound is switched to iPodDock;Otherwise turn next step;
Judge and show that current source of sound is Aux, and current source of sound is switched to iPodDock.
4. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, when detectingThe Aux pulse flag bit of Aux source of sound access interface is true time, selects the 3rd source of sound switchover policy to carry out source of soundSwitch, it comprises the steps:
Judge that whether current source of sound is Aux, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, Airplay, USB or iPodDock, ifTo continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps currentSource of sound, if corresponding source of sound access interface is not in broadcast state, switches to Aux by current source of sound;Otherwise turn next step;
Judge and show that current source of sound is FM, judge that whether FM source of sound access interface is in automatic channel search state,If so, keep current source of sound, if not, continue to judge whether current frequency exists available stations,If so, keep current source of sound, if current frequency does not exist available stations, current source of sound is switched to Aux.
5. source of sound automatic switchover implementation method as claimed in claim 4, is characterized in that Aux source of soundThe step that access interface arranges Aux pulse flag bit comprises:
Cycle has judged whether the input of Aux analog signal, and if so, counter adds 1, otherwise, will countDevice zero clearing, and Aux pulse mark position is set to vacation;
Judge whether counter is greater than default threshold value, if not, return to previous step, if so, continueContinue and judge whether Aux pulse mark position is true, if Aux pulse mark position is not true, by Aux arteries and veinsIt is true rushing mark position, if Aux pulse mark position is true, returns to previous step.
6. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, system powers onTime, to select the 4th source of sound switchover policy to carry out source of sound and switch, it comprises the steps:
Judge whether source of sound automatic switching function is opened, if not, the historical sound while obtaining last shutdownSource, and current source of sound is switched to this history source of sound, if source of sound automatic switching function is opened, continue to sentenceWhether disconnected iPodDock and USB source of sound access interface have iPodDock or USB device to insert, if so,Current source of sound is set to iPodDock or USB, if iPodDock and USB source of sound access interface do not haveThere are iPodDock or USB device to insert, continue to judge whether Aux source of sound access interface has analog signalInput, if so, current source of sound is set to Aux, otherwise current source of sound is set to FM.
7. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, works as AirplayWhen source of sound access interface detects audio transmission request, select five notes of traditional Chinese music source switchover policy to carry out source of sound and switch,It comprises the steps:
Judge that whether current source of sound is Airplay, if so, keeps current source of sound; Otherwise turn next step;
Judge that whether current source of sound is the one in Bluetooth, iPodDock or USB, if so, continuesContinue and judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound, andTransmission is ceased and desisted order to Airplay source of sound access interface, if corresponding source of sound access interface is not in playingState, switches to Airplay by current source of sound; Otherwise turn next step;
Judge whether current source of sound is FM, if so, continue to judge FM source of sound access interface whether inAutomatic channel search state, if so, stops tuning, and current source of sound is switched to Airplay, if FM source of soundAccess interface is not in automatic channel search state, directly current source of sound is switched to Airplay; Otherwise turnNext step;
Judge and show that current source of sound is Aux, switches to Airplay by current source of sound.
8. source of sound automatic switchover implementation method as claimed in claim 1, is characterized in that, when USB soundSource access interface detects when USB device inserts, selects the 6th source of sound switchover policy to carry out source of sound and switches,It comprises the steps:
Judge that whether current source of sound is USB, if so, keeps current source of sound; Otherwise turn next step;
Judge whether current source of sound is the one in Bluetooth, iPodDock or Airplay, if so,Continue to judge that corresponding source of sound access interface, whether in broadcast state, if so, keeps current source of sound,If corresponding source of sound access interface is not in broadcast state, current source of sound is switched to USB; OtherwiseTurn next step;
Judge whether current source of sound is FM, if so, continue to judge FM source of sound access interface whether inAutomatic channel search state, if so, stops tuning, and current source of sound is switched to USB, if FM source of sound connectsIncoming interface is not in automatic channel search state, directly current source of sound is switched to USB; Otherwise turn nextStep;
Judge and show that current source of sound is Aux, switches to USB by current source of sound.
9. a source of sound automatic switchover implement device, is characterized in that, comprising:
Communication unit, for setting up and being connected of electronic equipment;
Detecting unit, for detection of the duty of each source of sound access interface;
Performance element, selects default corresponding source of sound for the duty according to each source of sound access interfaceSwitchover policy is carried out source of sound and is switched;
Described communication unit at least comprises Bluetooth source of sound access interface, USB source of sound access interface, iPodDock source of sound access interface, Airplay source of sound access interface, FM source of sound access interface and the access of Aux source of soundThe one of interface, wherein, Bluetooth has limit priority, USB, iPodDock and AirplayHave identical priority, and priority level is low compared with Bluetooth, FM has compared with USB, iPodDockOr the low priority of Airplay, Aux has lowest priority;
Described Bluetooth source of sound access interface, for detection of when the audio transmission request, judges current source of soundWhether be Bluetooth, if so, keep current source of sound; Otherwise judge current source of sound be whether Airplay,One in iPodDock or USB, if so, continue to judge corresponding source of sound access interface whether inBroadcast state, if so, sends and ceases and desist order to corresponding source of sound access interface, and current source of sound is cutChange to Bluetooth, if corresponding source of sound access interface is not in broadcast state, directly by current soundSource switches to Bluetooth; Otherwise judge whether current source of sound is FM, if so, continue to judge FM soundSource access interface, whether in automatic channel search state, if so, stops tuning, and current source of sound is switchedTo Bluetooth, if FM source of sound access interface is not in automatic channel search state, directly by current source of soundSwitch to Bluetooth; Otherwise judge and show that current source of sound is Aux, and directly current source of sound is switched toBluetooth。
10. source of sound automatic switchover implement device as claimed in claim 9, is characterized in that described detectionUnit comprises:
Aux source of sound input module, for being connected to Aux source of sound access interface, and accesses according to Aux source of soundThe working condition of interface is exported corresponding level signal;
Aux source of sound detection module, for sentencing by the level signal value that reads the output of Aux source of sound input moduleThe duty of disconnected Aux source of sound access interface;
And described performance element comprises:
ADC analog-to-digital conversion module, for carrying out modulus to the level signal of Aux source of sound input module outputConversion processing, and export Aux data signal;
MCU control module, the judged result of obtaining from Aux source of sound detection module for foundation is to power amplifier mouldPiece sends the control instruction of whether playing Aux source of sound;
Power amplifier module, carries out power amplification processing for the control instruction according to obtaining to Aux data signal.
11. source of sound automatic switchover implement devices as claimed in claim 10, is characterized in that described AuxSource of sound detection module comprises resistance R 1～R9, capacitor C 1～C4, capacitor C 285, triode Q14, Q17And Q18 and diode D5 and D6, wherein, the Aux_R output of Aux source of sound input module passes throughCapacitor C 1 is connected to the base stage of triode Q18, and the Aux_L output of Aux source of sound input module passes through electric capacityC2 is connected to the base stage of triode Q17, the grounded emitter of triode Q18, and the base stage of triode Q18 is logicalCross the first end that resistance R 1 is connected to resistance R 3, the colelctor electrode of triode Q18 is connected to electricity by resistance R 2The first end of resistance R3, the first end of resistance R 3 is also by capacitor C 3 ground connection, and the second end of resistance R 3 connectsTo the first input end of MCU control module, the base stage of triode Q17 is connected to three by resistance R 4 and R5The colelctor electrode of utmost point pipe Q17, the colelctor electrode of triode Q17 is also connected to the anode of diode D6, triodeThe grounded emitter of Q17, the colelctor electrode of triode Q18 is connected to the anode of diode D5, diode D5And the negative electrode of D6 is all connected to the first end of capacitor C 285 and the first end of resistance R 6, capacitor C 285The second end ground connection is also connected to the second input of MCU control module, of resistance R 6 by capacitor C 4Two ends are connected to the base stage of first end and the triode Q14 of resistance R 9, the second end ground connection of resistance R 9,The grounded emitter of triode Q14, the colelctor electrode of triode Q14 connects high level by resistance R 7, and,The colelctor electrode of triode Q14 is also connected to the second input of MCU control module by resistance R 8.
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| CN105554638A (en) * | 2016-01-15 | 2016-05-04 | 深圳市蜗蜗科技有限责任公司 | Method and system for realizing multi-channel audio switching |
| CN105681974A (en) * | 2016-04-01 | 2016-06-15 | 北京小鸟听听科技有限公司 | Multiple-sound-source switching method and device and audio equipment |
| CN106713978A (en) * | 2017-01-04 | 2017-05-24 | 青岛海信电器股份有限公司 | Method and device for selecting audio output channel and terminal equipment |
| CN109756824B (en) * | 2017-11-03 | 2021-07-13 | 厦门雅迅网络股份有限公司 | Circuit and method for realizing automatic switching of vehicle-mounted external audio channel |
| CN108965784B (en) * | 2017-12-28 | 2020-09-08 | 视联动力信息技术股份有限公司 | Data processing method and device for video network |
| CN108184193B (en) * | 2017-12-28 | 2021-03-30 | 西安Tcl软件开发有限公司 | Play control method of Bluetooth play terminal, Bluetooth device and computer storage medium |
| USD919640S1 (en) | 2020-01-24 | 2021-05-18 | Caterpillar Inc. | Display screen with graphical user interface |
| CN112468933A (en) * | 2020-11-02 | 2021-03-09 | 青岛海尔多媒体有限公司 | Control method and device for sound system and sound box |
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Address after: 516006 community 37, Zhongkai high tech Zone, Huizhou, Guangdong Patentee after: Tongli Technology Co.,Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 19 district Patentee before: TONLY ELECTRONICS HOLDINGS Ltd. |