CN105430492A - Audio output control method and audio output control device - Google Patents
Audio output control method and audio output control device Download PDFInfo
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- CN105430492A CN105430492A CN201510851554.7A CN201510851554A CN105430492A CN 105430492 A CN105430492 A CN 105430492A CN 201510851554 A CN201510851554 A CN 201510851554A CN 105430492 A CN105430492 A CN 105430492A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4396—Processing of audio elementary streams by muting the audio signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The invention discloses an audio output control method. The method comprises the following steps of: when an electronic device receives an application switching command, acquiring a to-be-switched multimedia application corresponding to the switching command; acquiring switching duration between the to-be-switched multimedia application and the current multimedia application; regulating an audio output state of an audio power amplifier of the electronic device to be a mute state, wherein the duration of the mute state is the switching duration; and at the end of the mute state, recovering the audio output state of the audio power amplifier. The invention also discloses an audio output control device. With the method and the device provided by the invention, the audio output of a television audio power amplifier is regulated to be mute output during a multimedia application switching process; phenomena that audio information of the current multimedia application is output, even users can hear harsh sound, and so on, in the multimedia application switching process, are avoided; and consequently, audio output abnormity, such as noise, of the current multimedia application generated when switching the multimedia application is avoided.
Description
Technical field
The present invention relates to TV technology, particularly relate to a kind of audio output control method and device.
Background technology
At present, along with the fast development of intelligent television, such as sounds of nature K sings, the multimedia application of liking the multimedia application such as strange skill video and intelligent television also gets more and more, function is more and more abundanter, for user provides abundant amateur entertainment resource.
But, when intelligent television carries out switching between multimedia application, because the resource releases such as the audio frequency that present multimedia is applied need the regular hour, the audio resource causing present multimedia to apply continues to export a period of time, and then causes the audio frequency output abnormality of intelligent television.For example, intelligent television is being play sounds of nature K and is being sung the songs such as you Wan Nian of love of such as Liu De China in multimedia application, now user is switched to DTV (DigitalTelevision, Digital Television) TV programme such as multimedia application viewing Spring Festival Gala etc., do not suspend because sounds of nature K sings, after being switched to DTV multimedia application efficiently, user can also hear the song of Liu Dehua for some time when look at TV programme, switch the audio frequency output abnormality of generation between these multimedia application, greatly have impact on the viewing experience of user.
Summary of the invention
The invention provides a kind of audio output control method and device, be intended to the technical problem solving intelligent television audio frequency output abnormality when multimedia application switches.
For achieving the above object, a kind of audio output control method provided by the invention, be applied in an electronic installation, described audio output control method comprises the following steps:
When electronic installation receives application switching command, obtain the to be switched multimedia application that described switching command is corresponding;
Obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
The audio output state of the audio-frequency power amplifier of described electronic installation is adjusted to mute state, and the lasting duration of described mute state is described switching duration;
At the end of described mute state, recover the audio output state of described audio-frequency power amplifier.
Preferably, the described to be switched multimedia application of described acquisition and present multimedia apply between the step of switching duration comprise:
Be first time when switching between described to be switched multimedia application and present multimedia are applied, obtain described to be switched multimedia application respectively and present multimedia applies the memory size taken;
Apply based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively and calculate the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
The closedown duration that the starting duration of described to be switched multimedia application and present multimedia are applied is added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
Preferably, at the end of described mute state, after recovering the audio frequency output of described audio-frequency power amplifier, described method also comprises:
When described to be switched multimedia application and present multimedia application switching complete, obtain the actual switching duration that described to be switched multimedia application and present multimedia are applied;
Store described reality to switch duration or upgrade described switching duration based on described reality switching duration.
Preferably, the described to be switched multimedia application of described acquisition and present multimedia apply between the step of switching duration comprise:
First time when switching between described to be switched multimedia application and present multimedia are applied, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
Preferably, described audio output control method also comprises:
When described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
At the end of described mute state, after the step that the audio frequency recovering described audio-frequency power amplifier exports, described method also comprises:
Increase progressively the audio output gain of described audio-frequency power amplifier.
In addition, for achieving the above object, the present invention also provides a kind of audio output control device, and described audio output control device comprises:
First acquisition module, during for receiving application switching command at electronic installation, obtains the to be switched multimedia application that described switching command is corresponding;
Second acquisition module, for obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
Quiet module, the audio output state for the audio-frequency power amplifier by described electronic installation is adjusted to mute state, and the lasting duration of described mute state is described switching duration;
Recover module, at the end of described mute state, the audio frequency recovering described audio-frequency power amplifier exports.
Preferably, described second acquisition module comprises:
Acquiring unit, between applying in described to be switched multimedia application and present multimedia be switch first time time, obtain described to be switched multimedia application respectively and present multimedia applies the memory size taken;
First computing unit, calculates for applying based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
Second computing unit, closedown duration for the starting duration of described to be switched multimedia application and present multimedia are applied be added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
Preferably, described audio output control device also comprises:
3rd acquisition module, for when described to be switched multimedia application and present multimedia application switching complete, obtains the actual switching duration that described to be switched multimedia application and present multimedia are applied;
Storage update module, switches duration for storing described reality or upgrades described switching duration based on described reality switching duration.
Preferably, described second acquisition module also between applying in described to be switched multimedia application and present multimedia be not switch first time time, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
Preferably, described audio output control device also comprises:
To successively decrease module, for when described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
Increase progressively module, for increasing progressively the audio output gain of described audio-frequency power amplifier.
The present invention is by receiving application switching command during at electronic installation, obtain the to be switched multimedia application that described switching command is corresponding, then obtain to be switched multimedia application and present multimedia apply between switching duration, then the audio output state of the audio-frequency power amplifier of electronic installation is adjusted to mute state, and the lasting duration of mute state is for switching duration, last at the end of mute state, recover the audio output state of audio-frequency power amplifier, achieve in multimedia application handoff procedure, make the audio frequency of television audio power amplifier export as quiet output, the audio-frequency information exporting present multimedia application in multimedia application handoff procedure can be avoided, even user hears the phenomenons such as ear-piercing sound, and then the audio frequency output abnormality such as noise of present multimedia application when avoiding multimedia application to switch.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of audio output control method first embodiment of the present invention;
Fig. 2 obtains the refinement schematic flow sheet switching duration step in audio output control method second embodiment of the present invention;
Fig. 3 is the schematic flow sheet of audio output control method of the present invention 3rd embodiment;
Fig. 4 is the high-level schematic functional block diagram of audio output control device first embodiment of the present invention;
Fig. 5 is the refinement high-level schematic functional block diagram of the second acquisition module in audio output control device second embodiment of the present invention;
Fig. 6 is the high-level schematic functional block diagram of audio output control device of the present invention 3rd embodiment;
Fig. 7 is the high-level schematic functional block diagram of audio output control device of the present invention 4th embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of audio output control method.With reference to the schematic flow sheet that Fig. 1, Fig. 1 are audio output control method first embodiment of the present invention.
In the present embodiment, audio output control method is applied in an electronic installation, and this audio output control method comprises:
Step S10, when electronic installation receives application switching command, obtains the to be switched multimedia application that described switching command is corresponding;
Wherein, electronic installation comprises intelligent television, IPAD etc., the multimedia application of intelligent television comprises sounds of nature K and sings, likes the videos such as strange skill video, music application and HDMI (HighDefinitionMultimediaInterface, HDMI (High Definition Multimedia Interface)) application, DTV application etc.The switching command of intelligent television multimedia application refers to user when needing switching multi-media to apply by instruction that the panel etc. of the terminals such as remote controller or TV sends, receive the panel of user by the terminals such as remote controller or TV send or the switching command of input time, TV obtains to be switched multimedia application corresponding to this switching command, and this to be switched multimedia application can be the arbitrary multimedia application in intelligent television except present multimedia application.
Step S20, obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
Switch duration and refer to that to be switched multimedia application and present multimedia apply the required time consumed of television system when switching.Easy understand, switch duration and mainly comprise the closedown duration (internal memory release duration) that the starting duration of to be switched multimedia application and present multimedia apply, and the internal memory release duration of multimedia application and starting duration are determined by the memory size of this multimedia application, therefore, television terminal different multimedia application between switching duration primarily of to be switched multimedia application and present multimedia application memory size determine.In the present embodiment, by obtaining the memory size that to be switched multimedia application and present multimedia are applied respectively, then the memory size applied according to the to be switched multimedia application that gets and present multimedia calculates the closedown duration (consuming time) that to be switched multimedia application and present multimedia are applied respectively, again the closedown duration that the starting duration of the to be switched multimedia application calculated and present multimedia are applied is added can obtain to be switched multimedia application and present multimedia apply between switching duration, such as, memory size shared by present multimedia application sounds of nature K sings is 1200M, then the closedown duration of present multimedia application is 1200ms, the memory size of to be switched multimedia application DTV multimedia application is 1000M, then the starting duration of to be switched multimedia application is 1000ms, therefore, this to be switched multimedia application and present multimedia apply between switching duration be 2200ms, the switching duration that the memory size of multimedia application often increases 100M then its correspondence increases 100ms.Certainly, present multimedia application with to be switched multimedia application be not first time switch time, the present multimedia application of television system storage and the starting duration of to be switched multimedia application can be obtained, this switching duration is the front switching duration once switched of present multimedia application and to be switched multimedia application, and wherein previous multimedia application switches and can apply for being applied by present multimedia to switch to be switched multimedia application or switch to present multimedia by be switched multimedia application.
Step S30, is adjusted to mute state by the audio output state of the audio-frequency power amplifier of described electronic installation, and the lasting duration of described mute state is described switching duration;
In the present embodiment, the audio output state of audio-frequency power amplifier is made to be adjusted to mute state by the audio-frequency power amplifier of TV being in high level, the audio-frequency power amplifier of TV is the power amplifier that high level interrupts, and the duration that audio-frequency power amplifier is in high level is the closedown duration that to be switched multimedia application and present multimedia are applied.
Step S40, at the end of described mute state, recovers the audio output state of described audio-frequency power amplifier.
At the end of the duration of mute state, TV recovers the audio output state of audio-frequency power amplifier, audio frequency by audio-frequency power amplifier exports the audio output state before being adjusted to multimedia application switching, the audio output gain of audio-frequency power amplifier is adjusted to the audio output gain before multimedia application switching.
In the present embodiment, when the audio frequency recovering audio-frequency power amplifier exports, obtain the closedown duration that this to be switched multimedia application and present multimedia are applied, then store or upgrade the closedown duration that to be switched multimedia application and present multimedia are applied, for follow-up again carry out the switching that to be switched multimedia application and present multimedia apply time, directly adopt this switching duration switched.
In handoff procedure, the information that can be switched by the display module display present multimedia application of television system, such as information, the adjustment process information of audio output gain and the change information etc. of audio output gain that handoff procedure sound intermediate frequency exports.
The present embodiment is by receiving application switching command during at electronic installation, obtain the to be switched multimedia application that described switching command is corresponding, then obtain to be switched multimedia application and present multimedia apply between switching duration, then the audio output state of the audio-frequency power amplifier of electronic installation is adjusted to mute state, and the lasting duration of mute state is for switching duration, last at the end of mute state, recover the audio output state of audio-frequency power amplifier, achieve in multimedia application handoff procedure, make the audio frequency of television audio power amplifier export as quiet output, the audio-frequency information exporting present multimedia application in multimedia application handoff procedure can be avoided, even user hears the phenomenons such as ear-piercing sound, and then the audio frequency output abnormality such as noise of present multimedia application when avoiding multimedia application to switch, improve Consumer's Experience.
Propose the second embodiment of audio output control method of the present invention based on the first embodiment, with reference to Fig. 2, in the present embodiment, step S20 comprises:
Step S21 is first time when switching between described to be switched multimedia application and present multimedia are applied, and obtains described to be switched multimedia application respectively and present multimedia applies the memory size taken;
To be switched multimedia application and present multimedia are applied the memory size taken and are referred to that to be switched multimedia application and present multimedia are applied in the size of the television system internal memory taken respectively in running.
Step S22, applies based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively and calculates the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
The memory size applied according to the to be switched multimedia application got and present multimedia calculates the closedown duration that the starting duration of to be switched multimedia application and present multimedia are applied respectively, such as, memory size shared by present multimedia application sounds of nature K sings is 1200M, then the closedown duration of present multimedia application is 1200ms, the memory size of to be switched multimedia application DTV multimedia application is 1000M, then the starting duration of to be switched multimedia application is 1000ms, in the present embodiment, to be switched multimedia application or present multimedia application memory size often increase 100M then its correspondence switching duration increase 100ms.
Step S23, the closedown duration that the starting duration of described to be switched multimedia application and present multimedia are applied is added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
The closedown duration of the starting duration of above-mentioned to be switched multimedia application and present multimedia application is added can obtain to be switched multimedia application and present multimedia apply between switching duration, for example, the closedown duration of present multimedia application is 1200ms, when the starting duration of to be switched multimedia application is 1000ms, to be switched multimedia application and present multimedia apply between switching duration be 2200ms.In the present embodiment, along with the continuous renewal of multimedia application, internal memory shared by this multimedia application may become (multimedia application optimization) greatly or diminishes (when the function of multimedia application increases) and then cause the switching duration of this multimedia application and other multimedia application to change, therefore, after switching duration calculation between each multimedia application completes, can store or upgrade the switching duration of system storage.
The present embodiment by between to be switched multimedia application and present multimedia applys be switch for the first time time, obtain to be switched multimedia application respectively and present multimedia applies the memory size taken, then apply based on the to be switched multimedia application obtained and present multimedia the memory size taken respectively and calculate the closedown duration that the starting duration of to be switched multimedia application and present multimedia apply, then the closedown duration that the starting duration of to be switched multimedia application and present multimedia are applied is added obtain to be switched multimedia application and present multimedia apply between switching duration, and preserve the switching duration obtained, achieve the memory size applied according to be switched multimedia application and present multimedia calculate to be switched multimedia application and present multimedia apply between switching duration, make to be switched multimedia application and present multimedia apply between the calculating of switching duration more accurate, and then the problem of cacophonia occurs when can multimedia application be avoided accurately to switch, further increase Consumer's Experience.
Propose the 3rd embodiment of audio output control method of the present invention based on the first embodiment, with reference to Fig. 3, in the present embodiment, after the step s 40, this audio output control method also comprises:
Step S50, when described to be switched multimedia application and present multimedia application switching complete, obtains the actual switching duration that described to be switched multimedia application and present multimedia are applied;
In the present embodiment, when carrying out multimedia application and switch at every turn, television system stores the switching duration of this multimedia application switching and the multimedia application (comprising the information of to be switched multimedia application and present multimedia application) of correspondence, certainly when television system stores the switching duration of this multimedia application switching, this switching duration of direct renewal, to make this switching duration more accurate, for example along with the continuous renewal of multimedia application, internal memory shared by this multimedia application may become (multimedia application optimization) greatly or diminishes (when the function of multimedia application increases) and then cause the switching duration of this multimedia application and other multimedia application to change, therefore, after each multimedia application has switched, all need the switching duration upgrading system storage, therefore when to be switched multimedia application and present multimedia application switching complete, need to obtain the actual switching duration that to be switched multimedia application and present multimedia are applied.
Step S60, stores described reality and switches duration or upgrade described switching duration based on described reality switching duration;
Further, in other embodiments, this step S20 also comprises: be not first time when switching between described to be switched multimedia application and present multimedia are applied, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
Not that first time is when switching between to be switched multimedia application and present multimedia are applied, television system internal memory needs switching multi-media application and apply with present multimedia the switching duration switched for the last time, therefore can directly obtain the described to be switched multimedia application of TV storage and present multimedia apply between switching duration.
In the present embodiment, by when to be switched multimedia application and present multimedia application switching complete, obtain the actual switching duration that to be switched multimedia application and present multimedia are applied, then store actual switching duration or switch duration based on reality and upgrade described switching duration, achieve to be switched multimedia application and present multimedia apply between the storage of actual switching duration or renewal, and then for follow-up again carry out this to be switched multimedia application and present multimedia apply between switching time, directly call this switching duration, improve the switching efficiency that to be switched multimedia application and present multimedia are applied, the control that when making to switch, television system audio frequency exports is more accurate.
Propose the 4th embodiment of audio output control method of the present invention based on the first embodiment, in the present embodiment, this audio output control method also comprises:
When described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
Wherein, the mode that the audio output gain successively decreasing TV can adopt timing decile to successively decrease, wherein the time interval of timing can be determined according to the number of times switching duration and decile, for example successively decrease once every 100ms, in the present embodiment, till in the lasting duration in described controlling mute of audio power amplifier state, audio output gain is decremented to zero DB.
After the step s 40, this audio output control method also comprises: the audio output gain increasing progressively described audio-frequency power amplifier.
In the present embodiment, the mode contrary with the mode of the audio output gain of the above-mentioned TV that successively decreases can be adopted to carry out increasing progressively the audio output gain of TV, namely the mode that timing decile increases progressively is adopted, wherein, the time interval of timing can be determined according to the number of times switching duration and decile, for example successively decrease once every 100ms, the gain size increased progressively is identical with above-mentioned gain size of successively decreasing, in the present embodiment, by increasing progressively the audio output gain of audio-frequency power amplifier, know that the audio output gain of television system audio-frequency power amplifier reaches the audio output gain that multimedia application switches front audio-frequency power amplifier.
The present embodiment is by when audio-frequency power amplifier is in mute state, successively decrease the audio output gain of audio-frequency power amplifier, decrease the noise jamming that television audio exports, and the gain making audio frequency export continues level and smooth decay, for user provides the auditory perception of high-quality, by increasing progressively the audio output gain of audio-frequency power amplifier, make the increase that the audio output gain of the television system when playing to be switched multimedia application is level and smooth, decrease television audio export noise jamming and avoid play to be switched multimedia application time there is ear-piercing sound, further increase Consumer's Experience.
The present invention further provides a kind of audio output control device.With reference to the high-level schematic functional block diagram that Fig. 4, Fig. 4 are audio output control device first embodiment of the present invention.
In the present embodiment, the abnormal device of this acoustic processing comprises:
First acquisition module 10, during for receiving application switching command at electronic installation, obtains the to be switched multimedia application that described switching command is corresponding;
Wherein, electronic installation comprises intelligent television, IPAD etc., the multimedia application of such as intelligent television comprises sounds of nature K and sings, likes the videos such as strange skill video, music application and HDMI (HighDefinitionMultimediaInterface, HDMI (High Definition Multimedia Interface)) application, DTV application etc.The switching command of intelligent television multimedia application refers to user when needing switching multi-media to apply by instruction that the panel etc. of the terminals such as remote controller or TV sends, receive the panel of user by the terminals such as remote controller or TV send or the switching command of input time, TV obtains to be switched multimedia application corresponding to this switching command, and this to be switched multimedia application can be the arbitrary multimedia application in intelligent television except present multimedia application.
Second acquisition module 20, for obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
Switch duration and refer to that to be switched multimedia application and present multimedia apply the required time consumed of television system when switching.Easy understand, switch duration and mainly comprise (closedown duration) internal memory release duration of present multimedia application and the starting duration of to be switched multimedia application, and the internal memory release duration of multimedia application and starting duration are determined by the memory size of this multimedia application, therefore, television terminal different multimedia application between switching duration primarily of to be switched multimedia application and present multimedia application memory size determine.In the present embodiment, by obtaining the memory size that to be switched multimedia application and present multimedia are applied respectively, then the memory size applied according to the to be switched multimedia application that gets and present multimedia calculates the closedown duration (consuming time) that to be switched multimedia application and present multimedia are applied respectively, again the closedown duration that the starting duration of the to be switched multimedia application calculated and present multimedia are applied is added can obtain to be switched multimedia application and present multimedia apply between switching duration, such as, memory size shared by present multimedia application sounds of nature K sings is 1200M, then the closedown duration of present multimedia application is 1200ms, the memory size of to be switched multimedia application DTV multimedia application is 1000M, then the starting duration of to be switched multimedia application is 1000ms, therefore, this to be switched multimedia application and present multimedia apply between switching duration be 2200ms, the switching duration that the memory size of multimedia application often increases 100M then its correspondence increases 100ms.Certainly, present multimedia application with to be switched multimedia application be not first time switch time, the present multimedia application of television system storage and the starting duration of to be switched multimedia application can be obtained, this switching duration is the front switching duration once switched of present multimedia application and to be switched multimedia application, and wherein previous multimedia application switches and can apply for being applied by present multimedia to switch to be switched multimedia application or switch to present multimedia by be switched multimedia application.
Quiet module 30, the audio output state for the audio-frequency power amplifier by described electronic installation is adjusted to mute state, and the lasting duration of described mute state is described switching duration;
In the present embodiment, by quiet module 30, the audio-frequency power amplifier of TV being in high level makes the audio output state of audio-frequency power amplifier be adjusted to mute state, the audio-frequency power amplifier of TV is the power amplifier that high level interrupts, and the duration that audio-frequency power amplifier is in high level is the closedown duration that to be switched multimedia application and present multimedia are applied.
Recover module 40, at the end of described mute state, recover the audio output state of described audio-frequency power amplifier.
At the end of the duration of mute state, recover the audio frequency output that module 40 recovers audio-frequency power amplifier, audio frequency by audio-frequency power amplifier exports the audio output state before being adjusted to multimedia application switching, the audio output gain of audio-frequency power amplifier is adjusted to the audio output gain before multimedia application switching.
The present embodiment is by receiving application switching command during at electronic installation, first acquisition module 10 obtains to be switched multimedia application corresponding to described switching command, then the second acquisition module 20 obtain to be switched multimedia application and present multimedia apply between switching duration, then the audio output state of the audio-frequency power amplifier of electronic installation is adjusted to mute state by quiet module 30, and the lasting duration of mute state is for switching duration, last at the end of mute state, recover the audio output state that module 40 recovers audio-frequency power amplifier, achieve in multimedia application handoff procedure, make the audio frequency of television audio power amplifier export as quiet output, the audio-frequency information exporting present multimedia application in multimedia application handoff procedure can be avoided, even user hears the phenomenons such as ear-piercing sound, and then the audio frequency output abnormality such as noise of present multimedia application when avoiding multimedia application to switch, improve Consumer's Experience.
Propose the second embodiment of audio output control device of the present invention based on the first embodiment, with reference to Fig. 5, in the present embodiment, the second acquisition module 20 comprises:
Acquiring unit 21, between applying in described to be switched multimedia application and present multimedia be switch first time time, obtain described to be switched multimedia application respectively and present multimedia applies the memory size taken;
To be switched multimedia application and present multimedia are applied the memory size taken and are referred to that to be switched multimedia application and present multimedia are applied in the size of the television system internal memory taken respectively in running.
First computing unit 22, calculates for applying based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
First computing unit 22 calculates according to the memory size that the to be switched multimedia application got and present multimedia are applied the closedown duration that the starting duration of to be switched multimedia application and present multimedia apply respectively, such as, memory size shared by present multimedia application sounds of nature K sings is 1200M, then the closedown duration of present multimedia application is 1200ms, the memory size of to be switched multimedia application DTV multimedia application is 1000M, then the starting duration of to be switched multimedia application is 1000ms, in the present embodiment, to be switched multimedia application or present multimedia application memory size often increase 100M then its correspondence switching duration increase 100ms.
Second computing unit 23, closedown duration for the starting duration of described to be switched multimedia application and present multimedia are applied be added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
Second computing unit 23 the closedown duration of the starting duration of above-mentioned to be switched multimedia application and present multimedia application is added can obtain to be switched multimedia application and present multimedia apply between switching duration, for example, the closedown duration of present multimedia application is 1200ms, when the starting duration of to be switched multimedia application is 1000ms, to be switched multimedia application and present multimedia apply between switching duration be 2200ms.In the present embodiment, along with the continuous renewal of multimedia application, internal memory shared by this multimedia application may become (multimedia application optimization) greatly or diminishes (when the function of multimedia application increases) and then cause the switching duration of this multimedia application and other multimedia application to change, therefore, after switching duration calculation between each multimedia application completes, can store or upgrade the switching duration of system storage.
The present embodiment by between to be switched multimedia application and present multimedia applys be switch for the first time time, acquiring unit 21 obtains to be switched multimedia application respectively and present multimedia applies the memory size taken, then the first computing unit 22 is applied based on the to be switched multimedia application obtained and present multimedia the memory size taken respectively and is calculated the closedown duration that the starting duration of to be switched multimedia application and present multimedia apply, then the second computing unit 23 the closedown duration that the starting duration of to be switched multimedia application and present multimedia are applied is added obtain to be switched multimedia application and present multimedia apply between switching duration, and preserve the switching duration obtained, achieve the memory size applied according to be switched multimedia application and present multimedia calculate to be switched multimedia application and present multimedia apply between switching duration, make to be switched multimedia application and present multimedia apply between the calculating of switching duration more accurate, and then the problem of cacophonia occurs when can multimedia application be avoided accurately to switch, further increase Consumer's Experience.
Propose the 3rd embodiment of audio output control device of the present invention based on the first embodiment, with reference to Fig. 6, in the present embodiment, audio output control device also comprises:
3rd acquisition module 50, for when described to be switched multimedia application and present multimedia application switching complete, obtains the actual switching duration that described to be switched multimedia application and present multimedia are applied;
Storage update module 60, switches duration for storing described reality or upgrades described switching duration based on described reality switching duration.
In the present embodiment, when carrying out multimedia application and switch at every turn, television system stores the switching duration of this multimedia application switching and the multimedia application (comprising the information of to be switched multimedia application and present multimedia application) of correspondence, certainly when television system stores the switching duration of this multimedia application switching, this switching duration of direct renewal, to make this switching duration more accurate, for example along with the continuous renewal of multimedia application, internal memory shared by this multimedia application may become (multimedia application optimization) greatly or diminishes (when the function of multimedia application increases) and then cause the switching duration of this multimedia application and other multimedia application to change, therefore, after each multimedia application has switched, all need the switching duration upgrading system storage, therefore when to be switched multimedia application and present multimedia application switching complete, need to obtain the actual switching duration that to be switched multimedia application and present multimedia are applied.
Further, in other embodiments, second acquisition module 20 also between applying in described to be switched multimedia application and present multimedia be not switch first time time, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
Not that first time is when switching between to be switched multimedia application and present multimedia are applied, television system internal memory needs switching multi-media application and apply with present multimedia the switching duration switched for the last time, therefore can directly obtain the described to be switched multimedia application of TV storage and present multimedia apply between switching duration.
In the present embodiment, by when to be switched multimedia application and present multimedia application switching complete, 3rd acquisition module 50 obtains the actual switching duration that to be switched multimedia application and present multimedia are applied, then storage update module 60 stores actual switching duration or switches duration based on reality and upgrades described switching duration, achieve to be switched multimedia application and present multimedia apply between the storage of actual switching duration or renewal, and then for follow-up again carry out this to be switched multimedia application and present multimedia apply between switching time, directly call this switching duration, improve the switching efficiency that to be switched multimedia application and present multimedia are applied, the control that when making to switch, television system audio frequency exports is more accurate.
Propose the 4th embodiment of audio output control device of the present invention based on the first embodiment, with reference to Fig. 7, in the present embodiment, audio output control device also comprises:
To successively decrease module 70, for when described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
Wherein, the mode that the audio output gain successively decreasing TV can adopt timing decile to successively decrease, wherein the time interval of timing can be determined according to the number of times switching duration and decile, for example successively decrease once every 100ms, in the present embodiment, till in the lasting duration in described controlling mute of audio power amplifier state, audio output gain is decremented to zero DB.
Increase progressively module 80, for increasing progressively the audio output gain of described audio-frequency power amplifier.
In the present embodiment, the mode contrary with the mode of the audio output gain of the above-mentioned TV that successively decreases can be adopted to carry out increasing progressively the audio output gain of TV, namely the mode that timing decile increases progressively is adopted, wherein, the time interval of timing can be determined according to the number of times switching duration and decile, for example successively decrease once every 100ms, the gain size increased progressively is identical with above-mentioned gain size of successively decreasing, in the present embodiment, by increasing progressively the audio output gain of audio-frequency power amplifier, know that the audio output gain of television system audio-frequency power amplifier reaches the audio output gain that multimedia application switches front audio-frequency power amplifier.
The present embodiment is by when audio-frequency power amplifier is in mute state, module of successively decreasing 70 is successively decreased the audio output gain of audio-frequency power amplifier, decrease the noise jamming that television audio exports, and the gain making audio frequency export continues level and smooth decay, for user provides the auditory perception of high-quality, the audio output gain of audio-frequency power amplifier is increased progressively by increasing progressively module 80, make the increase that the audio output gain of the television system when playing to be switched multimedia application is level and smooth, decrease television audio export noise jamming and avoid play to be switched multimedia application time there is ear-piercing sound, further increase Consumer's Experience.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an audio output control method, is applied in an electronic installation, it is characterized in that, described audio output control method comprises the following steps:
When electronic installation receives application switching command, obtain the to be switched multimedia application that described switching command is corresponding;
Obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
The audio output state of the audio-frequency power amplifier of described electronic installation is adjusted to mute state, and the lasting duration of described mute state is described switching duration;
At the end of described mute state, recover the audio output state of described audio-frequency power amplifier.
2. audio output control method as claimed in claim 1, is characterized in that, the described to be switched multimedia application of described acquisition and present multimedia apply between the step of switching duration comprise:
Be first time when switching between described to be switched multimedia application and present multimedia are applied, obtain described to be switched multimedia application respectively and present multimedia applies the memory size taken;
Apply based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively and calculate the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
The closedown duration that the starting duration of described to be switched multimedia application and present multimedia are applied is added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
3. audio output control method as claimed in claim 1, is characterized in that, at the end of described mute state, after recovering the audio frequency output of described audio-frequency power amplifier, described method also comprises:
When described to be switched multimedia application and present multimedia application switching complete, obtain the actual switching duration that described to be switched multimedia application and present multimedia are applied;
Store described reality to switch duration or upgrade described switching duration based on described reality switching duration.
4. audio output control method as claimed in claim 3, is characterized in that, the described to be switched multimedia application of described acquisition and present multimedia apply between the step of switching duration comprise:
First time when switching between described to be switched multimedia application and present multimedia are applied, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
5. the audio output control method as described in any one of Claims 1-4, is characterized in that, described audio output control method also comprises:
When described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
At the end of described mute state, after recovering the step of the audio output state of described audio-frequency power amplifier, described method also comprises:
Increase progressively the audio output gain of described audio-frequency power amplifier.
6. an audio output control device, is characterized in that, described audio output control device comprises:
First acquisition module, during for receiving application switching command at electronic installation, obtains the to be switched multimedia application that described switching command is corresponding;
Second acquisition module, for obtain described to be switched multimedia application and present multimedia apply between switching duration, wherein, described switching duration is greater than the closedown duration of present multimedia application;
Quiet module, the audio output state for the audio-frequency power amplifier by described electronic installation is adjusted to mute state, and the lasting duration of described mute state is described switching duration;
Recover module, at the end of described mute state, recover the audio output state of described audio-frequency power amplifier.
7. audio output control device as claimed in claim 6, it is characterized in that, described second acquisition module comprises:
Acquiring unit, between applying in described to be switched multimedia application and present multimedia be switch first time time, obtain described to be switched multimedia application respectively and present multimedia applies the memory size taken;
First computing unit, calculates for applying based on the described to be switched multimedia application obtained and present multimedia the memory size taken respectively the closedown duration that the starting duration of described to be switched multimedia application and present multimedia apply;
Second computing unit, closedown duration for the starting duration of described to be switched multimedia application and present multimedia are applied be added obtain described to be switched multimedia application and present multimedia apply between switching duration, and preserve the described switching duration obtained.
8. audio output control device as claimed in claim 6, it is characterized in that, described audio output control device also comprises:
3rd acquisition module, for when described to be switched multimedia application and present multimedia application switching complete, obtains the actual switching duration that described to be switched multimedia application and present multimedia are applied;
Storage update module, switches duration for storing described reality or upgrades described switching duration based on described reality switching duration.
9. audio output control device as claimed in claim 8, it is characterized in that, described second acquisition module also between applying in described to be switched multimedia application and present multimedia be not switch first time time, obtain described to be switched multimedia application that described TV stores and present multimedia apply between switching duration.
10. the audio output control device as described in any one of claim 6 to 9, is characterized in that, described audio output control device also comprises:
To successively decrease module, for when described audio-frequency power amplifier is in mute state, the audio output gain of the described audio-frequency power amplifier that successively decreases;
Increase progressively module, for increasing progressively the audio output gain of described audio-frequency power amplifier.
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| CN201510851554.7A CN105430492A (en) | 2015-11-26 | 2015-11-26 | Audio output control method and audio output control device |
| PCT/CN2016/084202 WO2017088427A1 (en) | 2015-11-26 | 2016-05-31 | Audio output control method and device |
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