CN106375824A - Clock adjustment method and device, terminal and multimedia synchronous playing system - Google Patents
Clock adjustment method and device, terminal and multimedia synchronous playing system Download PDFInfo
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- CN106375824A CN106375824A CN201610882881.3A CN201610882881A CN106375824A CN 106375824 A CN106375824 A CN 106375824A CN 201610882881 A CN201610882881 A CN 201610882881A CN 106375824 A CN106375824 A CN 106375824A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 abstract description 12
- 230000001105 regulatory effect Effects 0.000 description 26
- 230000006870 function Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 10
- 230000006854 communication Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 230000015654 memory Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
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Classifications
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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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
- G10L21/055—Time compression or expansion for synchronising with other signals, e.g. video signals
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/4222—Remote control device emulator integrated into a non-television apparatus, e.g. a PDA, media center or smart toy
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- 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
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The embodiment of the invention provides a clock adjustment method and device, a terminal and a multimedia synchronous playing system. The clock adjustment method provided by the embodiment of the invention comprises the steps of: in the process of playing multimedia data, obtaining a time error between a system clock and a reference clock; then, determining adjustment information for adjustment according to the time error, and detecting whether a multimedia signal played and output currently has a human voice signal; and if no, adjusting the system clock according to the adjustment information so that the time error is zero. According to the scheme, the synchronization of multimedia played among multimedia playing devices can be improved.
Description
Technical field
The present invention relates to synchronous play-back technology field is and in particular to a kind of clock adjustment, device, terminal and multimedia
Synchronous playing system.
Background technology
With growth in the living standard, home audio-visual devices play important role in the life of people.Currently, will
Multiple multimedia play equipments (for example, audio amplifier, player etc.) and control device are interconnected by wired or wireless network,
One multimedia play system of composition, synchronous broadcasting identical multimedia such as music, it has been widely used.
In above-mentioned multimedia play system, each multimedia play equipment has independent clock system.Each is play
Equipment plays multimedia according to the clock system of its own.However, each multimedia play equipment and reference device are (general
For control device) clock system not always synchronous.Each playback equipment and reference device there may be each other
The trickle time difference.When multiple multimedia play equipments play identical multimedia such as music, the above-mentioned trickle time difference leads to respectively
The playing progress rate of individual multimedia play equipment is inconsistent, thereby result in raising multimedia play equipment between play multimedia with
Step property is than relatively low.
Content of the invention
The embodiment of the present invention provides a kind of clock adjustment, device, terminal and multimedia synchronous Play System, Ke Yiti
Multimedia synchronicity is play between high multimedia play equipment.
The embodiment of the present invention provides a kind of clock adjustment, comprising:
During playing multi-medium data, obtain the time error between system clock and reference clock；
Determine the regulation information being adjusted according to described time error；
Detect in the multi-media signal of currently playing output whether there is human voice signal；
If it is not, then according to described regulation information, described system clock is adjusted, so that described time error is zero.
Accordingly, the embodiment of the present invention also provides a kind of clock adjustment apparatus, comprising:
Acquiring unit, for during playing multi-medium data, obtain between system clock and reference clock when
Between error；
Determining unit, for determining the regulation information being adjusted according to described time error；
Detector unit, for detecting in the multi-media signal of currently playing output whether there is human voice signal；
Adjustment unit, for when detector unit detection does not have human voice signal, according to described regulation information to described system
Clock is adjusted, so that described time error is zero.
Accordingly, the embodiment of the present invention also provides a kind of terminal, comprising:
Be stored with the memorizer of executable program code；
The processor coupling with described memorizer；
Described processor calls the described executable program code of storage in described memorizer, and the execution embodiment of the present invention carries
For arbitrary clock adjustment.
Accordingly, the embodiment of the present invention additionally provides a kind of multimedia synchronous Play System, comprising: control device and at least
One playback equipment；Described control device is connected with described playback equipment；Described playback equipment is used for executing the embodiment of the present invention
The arbitrary clock adjustment providing.
The embodiment of the present invention, using during playing multi-medium data, obtains between system clock and reference clock
Time error, then, determines the regulation information being adjusted according to this time error, detects the multimedia letter of currently playing output
Whether there is human voice signal in number, if it is not, being then adjusted to this system clock according to this regulation information, so that this time error
It is zero.During the program can be with multimedia, and in nobody's voice output, system clock is adjusted, so that being
System clock is synchronous with reference clock, and then reaches multiple playback equipments synchronously multimedia effect of broadcasting, with respect to prior art
For, can improve and between multimedia play equipment, play multimedia synchronicity.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing is briefly described.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, on the premise of not paying creative work, can also be obtained other attached according to these accompanying drawings
Figure.
Fig. 1 is the schematic flow sheet of the clock adjustment that the embodiment of the present invention one provides.
Fig. 2 is the schematic flow sheet of the clock adjustment that the embodiment of the present invention two provides.
Fig. 3 is the structural representation of the first clock adjustment apparatus that the embodiment of the present invention three provides.
Fig. 4 is the structural representation of the second clock adjustment apparatus that the embodiment of the present invention three provides.
Fig. 5 is the structural representation of the third clock adjustment apparatus that the embodiment of the present invention three provides.
Fig. 6 is the schematic diagram of a scenario of the multimedia synchronous Play System that the embodiment of the present invention four provides.
Fig. 7 is the structural representation of the terminal that the embodiment of the present invention five provides.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other enforcement that those skilled in the art are obtained under the premise of not making creative work
Example, broadly falls into the scope of protection of the invention.
Term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second ", " the 3rd " etc.
(if present) is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that this
The object of sample description can exchange in the appropriate case.Additionally, term " comprising " and " having " and their any deformation, meaning
Figure is to cover non-exclusive comprising.For example, contain the process of series of steps, method or contain a series of modules or list
The device of unit, terminal, system are not necessarily limited to those steps or module or the unit clearly listed, and can also include unclear
The step listed or module or unit it is also possible to include for these processes, method, device, terminal or intrinsic its of system
Its step or module or unit.
The embodiment of the present invention provides a kind of clock adjustment, device, terminal and multimedia synchronous Play System, below will
It is described in detail respectively.
Embodiment one
The present embodiment specifically can integrated be play being described this clock adjustment apparatus from the angle of clock adjustment apparatus
In equipment, this playback equipment can be the playback equipment such as terminal (smart mobile phone, panel computer etc.), audio amplifier.
A kind of clock adjustment, comprising: during playing multi-medium data, obtains system clock and reference clock
Between time error, then, the regulation information that is adjusted is determined according to this time error, detects the many of currently playing output
Whether have human voice signal in media signal, if it is not, being then adjusted to this system clock according to this regulation information so that this when
Between error be zero.
As shown in figure 1, this clock adjustment, idiographic flow may include that
101st, during playing multi-medium data, obtain the time error between system clock and reference clock.
Wherein, this multi-medium data can be voice data, audio, video data etc..This voice data includes but is not limited to
cd、wav、mp3(moving picture experts group audio layer iii)、wma(windows media
The voice data of form such as audio).
This reference clock can be the system clock of reference device, and this reference device is the synchronous reference device play, than
As it can be control device or playback equipment.In actual applications, can choose from playback equipment according to the actual requirements
One equipment is as reference device.
Specifically, step " obtaining the time error between system clock and reference clock " may include that
Obtain the reference device current the first system time；
Obtain itself current second system time；
According to second system time and the first system time, obtain the time error between system clock and reference clock.
Such as, the time difference between second system time and the first system time can be calculated, this time difference is
Time error between system clock and reference clock；Time difference between this second system time and the first system time refers to
Be to be deducted the time difference that the first system time obtains the second system time.
In other embodiments, the time difference of the first system time and second system time, Ji Jiang can also be obtained
One system time deducts the time difference that the second system time obtains.
Wherein, the mode obtaining the current system time of reference device can have multiple, such as, can ask reference device
Send its current system time or reference device active push.
102nd, determine the regulation information being adjusted according to this time error.
This regulation information can be the regulation parameter of adjusted in concert, and it may include that regulation direction and regulated quantity, or
Only include regulated quantity.
Wherein, adjust direction and can include positive direction or negative direction, this positive direction adjusts and is to speed up system clock, losing side
It is to slow down system clock to regulation.Can also be: negative direction adjusts and is to speed up system clock, when positive direction regulation is to slow down system
Clock；Specifically can set according to the actual requirements.
Specifically, in time error be itself current time and reference device current time time difference, positive direction adjust
Section is to speed up system clock, negative direction adjust be slow down system clock in the case of, if time error is more than zero, determine same step
The regulation direction of section is negative direction, that is, need to slow down the system clock of itself；If time error is less than zero, determine that adjusting direction is
Positive direction, that is, need to accelerate the system clock of itself.
Wherein, this regulated quantity can be the absolute value of time error, and such as, when time error is 20ms, regulated quantity is 20ms,
When time error is -30ms, regulated quantity is 30ms.
103rd, whether there is human voice signal in the multi-media signal detecting currently playing output, if it is not, then execution step 104,
If so, then return to step 103 continues detection.
Wherein, the acoustical signal that human voice signal's behaviour sends；In the present embodiment, multi-media signal may include that picture signal
And/or acoustical signal.
In the present embodiment, in the multi-media signal that currently playing output can be detected in real time or dynamically, whether there is voice
Signal.
That is, this step is the acoustical signal that in the multi-media signal detect currently playing output, whether someone sends.
In the present embodiment, whether there is the mode of human voice signal can have in the multi-media signal detecting currently playing output many
Kind, as follows:
(1), the frequency domain information based on signal is detecting.
Because voice is concentrated mainly on specific frequency domain, therefore, it can carry out frequency-domain analysiss to multi-media signal, according to many matchmakers
The frequency domain information of body signal is detecting voice；Namely whether step " has voice in the multi-media signal detecting currently playing output
Signal " may include that
Frequency-domain analysiss are carried out to the multi-media signal of currently playing output, obtains the frequency domain information of multi-media signal；
Judge whether this frequency domain information is mated with default voice frequency domain information；
If coupling is it is determined that have human voice signal in the multi-media signal of currently playing output；
If mismatching it is determined that there is no human voice signal in the multi-media signal of currently playing output.
Wherein, the frequency domain information of multi-media signal can include the information such as the frequency of signal, frequency band.Default people's Audio Frequency Domain letter
Breath can be according to carrying out the voice frequency domain information that frequency-domain analysiss obtain to sample human voice signal.
(2), it is based on speech recognition technology to detect.
Because speech recognition technology can be identified to human voice signal, obtain corresponding content, then if multimedia
There is human voice signal in signal, the corresponding content of voice just can be identified by speech recognition, such as corresponding Word message.Cause
This, can detect in multi-media signal whether there is human voice signal by speech recognition.Namely step " detects currently playing output
Multi-media signal in whether have human voice signal " may include that
Speech recognition is carried out to the multi-media signal of currently playing output, obtains voice content；
When this voice content is not space-time, in the multi-media signal determining currently playing output, there is human voice signal；
When this voice content is space-time, in the multi-media signal determining currently playing output, there is no human voice signal.
(3), detected based on image recognition.
When multi-medium data is for video data, can determine by image recognition whether multi-media signal has voice to believe
Number；Specifically, step " whether having human voice signal in the multi-media signal detecting currently playing output " mays include:
Image recognition is carried out to the multi-media signal of currently playing output, obtains image recognition result.
Whether there is human voice signal in the multi-media signal detecting currently playing output according to image recognition result.
When image recognition result meets pre-conditioned, voice in the multi-media signal determining currently playing output, is had to believe
Number, otherwise determine there is no human voice signal.Such as, when the image identifying comprises personage it is determined that there being human voice signal, again than
As then determined there is human voice signal etc. when identifying that image comprises captions.
(4), it is based on track to detect.
Due to there being the audio track data of special voice (dialogue, libretto) in media file, therefore, it can by detecting many matchmakers
Whether volume data comprises audio track data to determine whether voice.Namely step " detects the multi-media signal of currently playing output
In whether have human voice signal " may include that
Detect in currently playing multi-medium data whether there is audio track data；
If having it is determined that having human voice signal in the multi-media signal of currently playing output；
If not having it is determined that there is no human voice signal in the multi-media signal of currently playing output.
It will be appreciated that detecting whether in the present embodiment that the mode of human voice signal is not limited only to the side of above-mentioned introduction
Formula, can also be other modes.
104th, according to this regulation information, this system clock is adjusted, so that this time error is zero.
Specifically, according to regulation direction and regulated quantity, system clock can be adjusted.Such as, will according to regulation direction
System clock adjusts a regulated quantity；As made system clock accelerate a default regulation step-length, such as accelerate 10ms etc..
For example, when clocking error is for 10ms, regulated quantity can be 10ms, and regulation direction is negative direction, then can be by
According to negative direction, system clock is adjusted 10ms, even if system clock slows down 10ms.
Alternatively, in order to avoid disposable regulating system clock reduces multimedia output quality, the present embodiment can basis
Adjust direction and regulated quantity is repeatedly adjusted to system clock, so that this time error is zero.
Such as, according to regulated quantity (now for total regulated quantity), regulation direction and default regulated quantity, system clock can be entered
Row is repeatedly adjusted.Default regulated quantity can set according to the actual requirements, such as, can be 10ms, 20ms, 1s etc..
Such as, time error is 15ms, when default regulated quantity is 5ms, can be first default according to adjusting direction regulation one
Regulated quantity 5ms, then again according to adjusting one default regulated quantity 5ms of direction regulation after the preset time period of interval, so again
After three times are adjusted, you can make time error be zero.
Alternatively, for improving the accuracy that clock is adjusted, and then improve the synchronicity between system clock and reference clock；
The present embodiment can constantly obtain time error between system clock and reference clock every certain time length, therefore, is not having
When having human voice signal, regulation information (as adjusted direction and regulated quantity) can be updated according to the time error obtaining again.Namely
The present embodiment method also includes: when obtaining the time error between system clock and reference clock, starts timing；
Now, when having human voice signal in the multi-media signal of currently playing output, judge whether present timing duration is big
In preset duration；If so, then obtain the time error between system clock and reference clock again, according to the time error obtaining
Update this regulation information.
Therefore, the present embodiment can constantly cyclically obtain time error to refresh regulation information, improve clock and adjust
Accuracy and promptness, and then improve the synchronicity of media play.
Alternatively, for improving the synchronicity of media play and the quality of media play, in many matchmakers of currently playing output
When having human voice signal in body signal, the present embodiment can also adjust system when the corresponding voice content of human voice signal is for certain content
System clock.Namely the present embodiment clock adjustment can also include:
When having human voice signal in the multi-media signal of currently playing output, obtain the corresponding voice content of human voice signal；
Judge whether this voice content is preset content；
If so, then according to this regulation information, this system clock is adjusted.
Such as, when voice content is for ad content, according to this regulation information, this system clock can be adjusted, this
When, adjust and be difficult to be perceived by the user, the quality that physical medium is play does not affect.
From the foregoing, it will be observed that the embodiment of the present invention, using during playing multi-medium data, obtains system clock and reference
Time error between clock, then, determines, according to this time error, the regulation information being adjusted, detects currently playing output
Multi-media signal in whether have human voice signal, if it is not, being then adjusted to this system clock according to this regulation information so that
This time error is zero.During the program can be with multimedia, and in nobody's voice output, system clock is adjusted
Section, so that system clock is synchronous with reference clock, and then reaches multiple playback equipments synchronously multimedia effect of broadcasting, relatively
For prior art, can improve and between multimedia play equipment, play multimedia synchronicity.
Additionally, the embodiment of the present invention can be carried out to system clock in nobody's voice output with dynamic monitoring people's voice output
Adjust, the quality of multimedia can be improved, greatly improve Consumer's Experience.
Embodiment two
Citing is described in further detail by clock adjustment according to described by embodiment one below.
In the present embodiment, carry out in detail as a example the clock adjustment apparatus described by by embodiment one being integrated in playback equipment
Thin description.
As shown in Fig. 2 a kind of clock adjustment, idiographic flow is as follows:
201st, playback equipment, during playing multi-medium data, obtains the time between system clock and reference clock
Error, and start timing.
Wherein, this multi-medium data can be voice data, audio, video data etc..The form of this voice data has many
Kind, such as, mp3 form, wma form etc..
Specifically, when playback equipment obtains reference device current the first system time and itself current second system
Between, then, according to second system time and the first system time, obtain the time error between system clock and reference clock.
Such as, the first system time is 1:06, and the second system time is 1:00, and now can obtain time error is -6s.
202nd, playback equipment judges whether time error is zero, if it is not, then execution step 203, if so, then execution step
207.
203rd, playback equipment determines the regulation direction and regulated quantity needing to be adjusted according to time error.
Wherein, adjust direction and can include positive direction or negative direction, this positive direction adjusts and is to speed up system clock, losing side
It is to slow down system clock to regulation.Wherein, this regulated quantity is the absolute value of time error.
If time error is more than zero, determine that the regulation direction of adjusted in concert is negative direction, that is, need to slow down itself is
System clock；If time error is less than zero, determine that adjusting direction is positive direction, that is, need to accelerate the system clock of itself.Such as, when
Between error be -6s when it may be determined that adjust direction be positive direction, regulated quantity be 6s.
204th, whether there is human voice signal, if it is not, then executing in the multi-media signal of the currently playing output of playback equipment detection
Step 205, if so, then continues whether there is human voice signal in the multi-media signal detect currently playing output, and execution step
206.
Wherein, detection human voice signal mode can the mode based on frequency domain information, the mode based on speech recognition, be based on
The mode of track and the mode based on image recognition.Specifically, detection process may be referred to the description of embodiment one, herein no longer
Repeat.
205th, playback equipment is adjusted to system clock according to regulation direction and regulated quantity, so that time error is
Zero, go to step 207.
Such as, according to regulation direction, system clock is adjusted a regulated quantity；As made system clock accelerate a default tune
Section step-length, such as accelerates 20ms etc..
Alternatively, in order to avoid disposable regulating system clock reduces multimedia output quality, the present embodiment playback equipment
According to regulation direction and regulated quantity, system clock repeatedly can be adjusted, so that this time error is zero.As by five
It is zero that secondary regulation makes time error.
206th, playback equipment is more than predetermined threshold value in present timing value, obtains between system clock and reference clock again
Time error, and regulation direction and regulated quantity are updated according to this time error.
Wherein, predetermined threshold value is the time interval of detection time error twice, and it can set, such as according to the actual requirements
1s, 3s etc..
207th, playback equipment, when present timing value is more than predetermined threshold value, obtains between system clock and reference clock again
Time error, go to step 202.
When being embodied as, the present invention is not limited by the execution sequence of each described step, is not producing conflict
In the case of, some steps can also be carried out or be carried out simultaneously using other orders.
From the foregoing, it will be observed that embodiment of the present invention playback equipment play multi-medium data during, obtain system clock with
Time error between reference clock, then, determines the regulation information being adjusted, detection is currently playing according to this time error
Whether there is human voice signal in the multi-media signal of output, if it is not, being then adjusted to this system clock according to this regulation information, with
This time error is made to be zero.During the program can be with multimedia, and in nobody's voice output, system clock is entered
Go and adjust, so that system clock is synchronous with reference clock, and then reach multiple playback equipments synchronously multimedia effect of broadcasting,
In terms of existing technologies, can improve and between multimedia play equipment, play multimedia synchronicity.
Additionally, the embodiment of the present invention can be carried out to system clock in nobody's voice output with dynamic monitoring people's voice output
Adjust, the quality of multimedia can be improved, greatly improve Consumer's Experience.
Embodiment three
In order to preferably implement above method, the embodiment of the present invention also provides a kind of clock adjustment apparatus, and this clock is adjusted
Device can be integrated in playback equipment, and this playback equipment can be the equipment such as smart mobile phone, panel computer, audio amplifier.
As shown in figure 3, clock adjustment apparatus 300 may include that acquiring unit 301, determining unit 302, detector unit 303
And adjustment unit 304, as follows:
Acquiring unit 301, for, during playing multi-medium data, obtaining between system clock and reference clock
Time error；
Determining unit 302, for determining the regulation information being adjusted according to this time error；
Detector unit 303, for detecting in the multi-media signal of currently playing output whether there is human voice signal；
Adjustment unit 304, for when detector unit 303 detection does not have human voice signal, according to this regulation information to this being
System clock is adjusted, so that this time error is zero.
Wherein, the mode of detection human voice signal has multiple, and such as, this detector unit 303 can be specifically for:
Frequency-domain analysiss are carried out to the multi-media signal of currently playing output, obtains the frequency domain information of multi-media signal；
Judge whether this frequency domain information is mated with default voice frequency domain information；
If coupling is it is determined that have human voice signal in the multi-media signal of currently playing output.
Again such as, this detector unit 303 can be specifically for:
Speech recognition is carried out to the multi-media signal of currently playing output, obtains voice content；
When this voice content is not space-time, in the multi-media signal determining currently playing output, there is human voice signal；
When this voice content is space-time, in the multi-media signal determining currently playing output, there is no human voice signal.
Alternatively, with reference to Fig. 4, the present embodiment clock adjustment apparatus 300 can also include: timing unit 305, first judges
Unit 306 and updating block 307；
Timing unit 305, during for obtaining the time error between system clock and reference clock in acquiring unit, starts
Timing；
First judging unit 306, for detecting in the multi-media signal of currently playing output there is voice in detector unit 303
During signal, judge whether present timing duration is more than preset duration；
Updating block 307, for when the first judging unit 306 judges more than preset duration, obtaining system clock again
Time error and reference clock between, the time error according to obtaining updates this regulation information.
With reference to Fig. 5, the present embodiment clock adjustment apparatus 300 can also include:
Voice recognition unit 308, during for having human voice signal in the multi-media signal of currently playing output, obtains voice
The corresponding voice content of signal；
Second judging unit 309, for judging whether this voice content is preset content；
This adjustment unit 304, be additionally operable to when the second judging unit 309 is judged as YES, according to this regulation information to this be
System clock is adjusted.
When being embodied as, above unit can be realized as independent entity it is also possible to carry out combination in any, makees
To realize for same or several entities, being embodied as of above unit can be found in embodiment of the method above, and here is not
Repeat again.
From the foregoing, it will be observed that the embodiment of the present invention adopts acquiring unit 301 during playing multi-medium data, obtain system
Time error between clock and reference clock, then, determines, by determining unit 302, the tune being adjusted according to this time error
Whether section information, have human voice signal in the multi-media signal being detected currently playing output by detector unit 303, if it is not, then by adjusting
Section unit 304 is adjusted to this system clock according to this regulation information, so that this time error is zero.The program can be many
In media play process, and in nobody's voice output, system clock is adjusted, so that system clock and reference clock
Synchronous, and then reach multiple playback equipments synchronously multimedia effect of broadcasting, in terms of existing technologies, many matchmakers can be improved
Multimedia synchronicity is play between body playback equipment.
Additionally, the embodiment of the present invention can be carried out to system clock in nobody's voice output with dynamic monitoring people's voice output
Adjust, the quality of multimedia can be improved, greatly improve Consumer's Experience.
Example IV
Citing is described in further detail by clock adjustment according to described by embodiment one and two below.
In the present embodiment, will be integrated in slave with clock adjustment apparatus described by embodiment one, two and three and be
Example is described in detail.
Embodiments provide a kind of multimedia synchronous Play System, may include that control device and at least one
Playback equipment；Described control device is connected (as by network connection) with described playback equipment；Described playback equipment is used for executing
Arbitrary clock adjustment that above-described embodiment provides.
Wherein, control device can be used as main control device, and playback equipment can be used as slave.
With reference to Fig. 6, present embodiments provide a kind of multimedia synchronous Play System, comprising: source device 10, main control device
20th, at least one slave 30；Can be interconnected by network phase between this source device 10, main control device 20, slave 30
Connect.
Wherein, main control device 20 is used for controlling slave, and it can be terminal, such as mobile phone, panel computer etc., this master control
Equipment can also be playback equipment, such as, the playback equipment such as audio amplifier；The present embodiment will so that main control device 20 is as terminal as a example be carried out
Explanation.
This slave 30 can be the playback equipment being controlled by main control device 20, and this slave can be audio amplifier, tool
There are the playback equipments such as the terminal of playing function.
Wherein, source device 10 is used for providing multi-medium data to be played, and it can be with network equipments such as servers.
Before synchronous broadcasting multimedia, the present embodiment can choose an equipment as same from multiple slaves 30
The reference device that step is play, in synchronous playing process, when the clock of all slaves is all by system with this reference device
Clock preserves synchronous.Such as, a slave can be chosen from multiple slaves 30 by main control device 20 to broadcast as synchronous
The reference device put, then, the mark of reference device is sent to each slave.
If it is to be noted that when main control device 20 is also received from the media data that status is sent out in addition to distributing media data
During broadcasting, this main control device 20 is also slave.At this point it is possible to choosing main control device 20 is that equipment is broadcast in reference.
The flow process of multimedia is as follows:
Source device 10 sends multi-medium data to main control device 20；Main control device 20 is packed to multi-medium data, obtains
To multiple media data packet；Main control device 20 sends media data packet to each slave 30；Slave 30 buffered media
Packet simultaneously plays the media data packet of caching.The clock that slave 30 executes described by embodiment one and two afterwards is adjusted
Step.Here is omitted.
From the foregoing, it will be observed that the embodiment of the present invention adopts slave 30 during playing multi-medium data, obtain system
Time error between clock and reference clock, then, determines the regulation information being adjusted, detection is worked as according to this time error
Whether there is human voice signal, if it is not, then carrying out to this system clock according to this regulation information in the multi-media signal of front broadcasting output
Adjust, so that this time error is zero.During the program can be with multimedia, and in nobody's voice output to system
Clock is adjusted, so that system clock is synchronous with reference clock, and then reaches multiple playback equipments synchronously broadcasting multimedia
Effect, in terms of existing technologies, can improve and between multimedia play equipment, play multimedia synchronicity.
Additionally, embodiment of the present invention slave 30 can be with dynamic monitoring people's voice output, in nobody's voice output to being
System clock is adjusted, and can improve the quality of multimedia, greatly improve Consumer's Experience.
Embodiment five
The embodiment of the present invention also provides a kind of terminal, as shown in fig. 7, this terminal 400 can include radio frequency (rf, radio
Frequency) circuit 401, the memorizer 402 including one or more computer-readable recording mediums, input block
403rd, display unit 404, sensor 405, voicefrequency circuit 406, Wireless Fidelity (wifi, wireless fidelity) module
407th, the parts such as processor 408 and the power supply 409 of or more than one processing core are included.People in the art
Member, it is appreciated that the restriction of the terminal structure not structure paired terminal shown in Fig. 7, can include more more or less of than illustrating
Part, or combine some parts, or different part arrangements.
Radio circuit 401 can be used for receiving and sending messages, or the reception of signal and transmission in communication process, especially, by base station
Downlink information receive after, transfer to one or more than one processor 408 processed；In addition, up data is activation will be related to
To base station.Generally, radio circuit 401 includes but is not limited to antenna, at least one amplifier, tuner, one or more vibration
Device, subscriber identity module (sim, subscriber identity module) card, transceiver, bonder, low noise amplification
Device (lna, low noise amplifier), duplexer etc..Additionally, radio circuit 401 can also pass through radio communication and network
With other equipment communication.This radio communication can use arbitrary communication standard or agreement, including but not limited to global system for mobile telecommunications
System (gsm, global system of mobile communication), general packet radio service (gprs, general
Packet radio service), CDMA (cdma, code division multiple access), wideband code division many
Location (wcdma, wideband code division multiple access), Long Term Evolution (lte, long term
Evolution), Email, Short Message Service (sms, short messaging service) etc..
Memorizer 402 can be used for storing application program data.Include and can hold in the application program of memorizer 402 storage
Line program code.Application program can form various functions module.Processor 408 passes through operation and is stored in answering of memorizer 402
With program, thus executing various function application and data processing.Memorizer 402 can mainly include storing program area and storage number
According to area, wherein, storing program area can application program needed for storage program area, at least one function (such as sound plays work(
Energy, image player function etc.) etc.；Storage data field can store according to terminal using created data (such as voice data,
Phone directory etc.) etc..Additionally, memorizer 402 can include high-speed random access memory, non-volatile memories can also be included
Device, for example, at least one disk memory, flush memory device or other volatile solid-state parts.Correspondingly, memorizer
402 can also include Memory Controller, to provide the access to memorizer 402 of processor 408 and input block 403.
Input block 403 can be used for numeral, character information or the user's characteristic information (such as fingerprint) of receives input, and
Produce the keyboard relevant with user setup and function control, mouse, action bars, optics or trace ball signal input.Specifically
Ground, input block 403 can include fingerprint recognition module.In certain embodiments, input block 403 can also include touch-sensitive table
Face.Touch sensitive surface, also referred to as touch display screen or Trackpad, can collect user thereon or neighbouring touch operation (such as
User uses the operation on Touch sensitive surface or near Touch sensitive surface of any suitable object such as finger, stylus or adnexa), and
Corresponding attachment means are driven according to formula set in advance.Optionally, Touch sensitive surface may include touch detecting apparatus and touch
Two parts of controller.Wherein, touch detecting apparatus detect the touch orientation of user, and detect the signal that touch operation brings,
Transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into touching
Point coordinates, then give processor 408, and can the order sent of receiving processor 408 being executed.Furthermore, it is possible to using electricity
The polytypes such as resistive, condenser type, infrared ray and surface acoustic wave realize Touch sensitive surface.Except Touch sensitive surface, input block 403
Other input equipments can also be included.Specifically, other input equipments can include but is not limited to physical keyboard, function key (ratio
As volume control button, switch key etc.), trace ball, mouse, one or more of action bars etc..
Display unit 404 can be used for display and by the information of user input or is supplied to the information of user and the various of terminal
Graphical user interface, these graphical user interface can be made up of figure, text, icon, video and its combination in any.Display
Unit 404 may include display floater.Optionally, can using liquid crystal display (lcd, liquid crystal display),
The forms such as Organic Light Emitting Diode (oled, organic light-emitting diode) are configuring display floater.Further
, Touch sensitive surface can cover display floater, when Touch sensitive surface detects thereon or after neighbouring touch operation, sends process to
Device 408, to determine the type of touch event, provides accordingly according to the type of touch event on a display panel with preprocessor 408
Visual output.Although in the figure 7, Touch sensitive surface and display floater are to realize inputting as two independent parts and to input
Function, but in some embodiments it is possible to will be integrated to Touch sensitive surface and display floater and realize input and output function.
Terminal may also include at least one sensor 405, such as optical sensor, motion sensor and other sensors.
Specifically, optical sensor may include ambient light sensor and proximity transducer, and wherein, ambient light sensor can be according to ambient light
The brightness to adjust display floater for the light and shade, proximity transducer can cut out display floater and/or the back of the body when terminal moves in one's ear
Light.As one kind of motion sensor, Gravity accelerometer can detect (generally three axles) acceleration in all directions
Size, can detect that size and the direction of gravity when static, can be used for identify mobile phone attitude application (such as horizontal/vertical screen switching,
Dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Can also configure as terminal
Gyroscope, barometer, drimeter, thermometer, the other sensors such as infrared ray sensor, will not be described here.
Voicefrequency circuit 406 can provide the audio interface between user and terminal by speaker, microphone.Voicefrequency circuit
The voice data receiving can be converted into the signal of telecommunication by 406, be transferred to speaker, be converted to acoustical signal output by speaker；
On the other hand, the acoustical signal of collection is converted to the signal of telecommunication by microphone, is converted to audio frequency number by voicefrequency circuit 406 after being received
According to then after processing voice data output processor 408, through radio circuit 401 being sent to such as another terminal, or by sound
Frequency data output is to memorizer 402 to process further.Voicefrequency circuit 406 is also possible that earphone jack, to provide peripheral hardware
Earphone and the communication of terminal.
Wireless Fidelity (wifi) belongs to short range wireless transmission technology, and terminal can be helped by wireless fidelity module 407
User sends and receive e-mail, browses webpage and access streaming video etc., and it has provided the user wireless broadband internet and has accessed.
Although Fig. 7 shows wireless fidelity module 407, but it is understood that, it is simultaneously not belonging to must be configured into of terminal, completely may be used
To omit in the scope of essence not changing invention as needed.
Processor 408 is the control centre of terminal, using the various pieces of various interfaces and the whole terminal of connection, leads to
Cross and run or execute the application program being stored in memorizer 402, and call the data being stored in memorizer 402, execution
The various functions of terminal and processing data, thus carry out integral monitoring to terminal.Optionally, processor 408 may include one or
Multiple processing cores；Preferably, processor 408 can integrated application processor and modem processor, wherein, application processor
Main process operating system, user interface and application program etc., modem processor mainly processes radio communication.It is appreciated that
, above-mentioned modem processor can not also be integrated in processor 408.
Terminal also includes the power supply 409 (such as battery) powered to all parts.Preferably, power supply can pass through power supply pipe
Reason system is logically contiguous with processor 408, thus realizing management charging, electric discharge and power managed by power-supply management system
Etc. function.Power supply 409 can also include one or more direct current or alternating current power supply, recharging system, power failure inspection
The random component such as slowdown monitoring circuit, power supply changeover device or inverter, power supply status indicator.
Although not shown in Fig. 7, terminal can also include photographic head, bluetooth module etc., will not be described here.
Specifically in the present embodiment, the processor 408 in terminal can be according to following instruction, will be one or more
The corresponding executable program code of process of application program is loaded in memorizer 402, and to be run by processor 408 and be stored in
Application program in memorizer 402, thus realizing various functions:
During playing multi-medium data, obtain the time error between system clock and reference clock, then, root
Determine the regulation information being adjusted according to this time error, in the multi-media signal detecting currently playing output, whether have voice to believe
Number, if it is not, being then adjusted to this system clock according to this regulation information, so that this time error is zero.
Preferably, whether there is human voice signal in the multi-media signal of the currently playing output of described detection, comprising:
Frequency-domain analysiss are carried out to the multi-media signal of currently playing output, obtains the frequency domain information of multi-media signal；
Judge whether described frequency domain information is mated with default voice frequency domain information；
If coupling is it is determined that have human voice signal in the multi-media signal of currently playing output.
Preferably, whether there is human voice signal in the multi-media signal of the currently playing output of described detection, comprising:
Speech recognition is carried out to the multi-media signal of currently playing output, obtains voice content；
When described voice content is not space-time, in the multi-media signal determining currently playing output, there is human voice signal；
When described voice content is space-time, in the multi-media signal determining currently playing output, there is no human voice signal.
Preferably, following functions also realized by processor 408:
When obtaining the time error between system clock and reference clock, start timing；
When having human voice signal in the multi-media signal of currently playing output, judge present timing duration whether more than default
Duration；
If so, then obtain the time error between system clock and reference clock again, according to the time error obtaining more
Newly described regulation information.
Preferably, following functions also realized by processor 408:
When having human voice signal in the multi-media signal of currently playing output, obtain the corresponding voice content of human voice signal；
Judge whether described voice content is preset content；
If so, then according to described regulation information, described system clock is adjusted.
Aforesaid operations specifically can be found in embodiment of the method above, will not be described here.
From the foregoing, it will be observed that embodiments providing a kind of terminal, this terminal, during playing multi-medium data, obtains
Take the time error between system clock and reference clock, then, the regulation information being adjusted determined according to this time error,
Detect in the multi-media signal of currently playing output whether there is human voice signal, if it is not, then according to this regulation information to this system when
Clock is adjusted, so that this time error is zero.During the program can be with multimedia, and in nobody's voice output
System clock is adjusted, so that system clock is synchronous with reference clock, and then reaches the synchronously broadcasting of multiple playback equipments
Multimedia effect, in terms of existing technologies, can improve and play multimedia synchronicity between multimedia play equipment.
It should be noted that one of ordinary skill in the art will appreciate that whole in the various methods of above-described embodiment or
Part steps can be by program to complete come the hardware to instruct correlation, and this program can be stored in computer-readable storage medium
In matter, storage medium may include that read only memory (rom, read only memory), random access memory (ram,
Random access memory), disk or CD etc..
A kind of clock adjustment, device, terminal and the multimedia synchronous that above the embodiment of the present invention are provided are play
System is described in detail, and specific case used herein is set forth to the principle of the present invention and embodiment, with
The explanation of upper embodiment is only intended to help and understands the method for the present invention and its core concept；Technology simultaneously for this area
Personnel, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this theory
Bright book content should not be construed as limitation of the present invention.
Claims (12)
1. a kind of clock adjustment is it is characterised in that include:
During playing multi-medium data, obtain the time error between system clock and reference clock；
Determine the regulation information being adjusted according to described time error；
Detect in the multi-media signal of currently playing output whether there is human voice signal；
If it is not, then according to described regulation information, described system clock is adjusted, so that described time error is zero.
2. clock adjustment as claimed in claim 1 is it is characterised in that the multimedia of the currently playing output of described detection is believed
Whether there is human voice signal in number, comprising:
Frequency-domain analysiss are carried out to the multi-media signal of currently playing output, obtains the frequency domain information of multi-media signal；
Judge whether described frequency domain information is mated with default voice frequency domain information；
If coupling is it is determined that have human voice signal in the multi-media signal of currently playing output.
3. clock adjustment as claimed in claim 1 is it is characterised in that the multimedia of the currently playing output of described detection is believed
Whether there is human voice signal in number, comprising:
Speech recognition is carried out to the multi-media signal of currently playing output, obtains voice content；
When described voice content is not space-time, in the multi-media signal determining currently playing output, there is human voice signal；
When described voice content is space-time, in the multi-media signal determining currently playing output, there is no human voice signal.
4. clock adjustment as claimed in claim 1 is it is characterised in that also include: when obtaining system clock with reference
During time error between clock, start timing；
When having human voice signal in the multi-media signal of currently playing output, when whether judging present timing duration more than presetting
Long；
If so, then obtain the time error between system clock and reference clock again, institute is updated according to the time error obtaining
State regulation information.
5. clock adjustment as claimed in claim 1 is it is characterised in that also include:
When having human voice signal in the multi-media signal of currently playing output, obtain the corresponding voice content of human voice signal；
Judge whether described voice content is preset content；
If so, then according to described regulation information, described system clock is adjusted.
6. a kind of clock adjustment apparatus are it is characterised in that include:
Acquiring unit, for during playing multi-medium data, obtaining the time between system clock and reference clock by mistake
Difference；
Determining unit, for determining the regulation information being adjusted according to described time error；
Detector unit, for detecting in the multi-media signal of currently playing output whether there is human voice signal；
Adjustment unit, for when detector unit detection does not have human voice signal, according to described regulation information to described system clock
It is adjusted, so that described time error is zero.
7. clock adjustment apparatus as claimed in claim 6 are it is characterised in that described detector unit, specifically for:
Frequency-domain analysiss are carried out to the multi-media signal of currently playing output, obtains the frequency domain information of multi-media signal；
Judge whether described frequency domain information is mated with default voice frequency domain information；
If coupling is it is determined that have human voice signal in the multi-media signal of currently playing output.
8. clock adjustment apparatus as claimed in claim 6 are it is characterised in that described detector unit, specifically for:
Speech recognition is carried out to the multi-media signal of currently playing output, obtains voice content；
When described voice content is not space-time, in the multi-media signal determining currently playing output, there is human voice signal；
When described voice content is space-time, in the multi-media signal determining currently playing output, there is no human voice signal.
9. clock adjustment apparatus as claimed in claim 6 it is characterised in that also include timing unit, the first judging unit with
And updating block；
Timing unit, during for obtaining the time error between system clock and reference clock in acquiring unit, starts timing；
First judging unit, during for having human voice signal in the multi-media signal of the detector unit currently playing output of detection, sentences
Whether disconnected present timing duration is more than preset duration；
Updating block, for when the first judging unit judges more than preset duration, obtaining system clock and reference clock again
Between time error, according to obtain time error update described regulation information.
10. clock adjustment apparatus as claimed in claim 6 are it is characterised in that also include:
Voice recognition unit, during for having human voice signal in the multi-media signal of currently playing output, obtains human voice signal couple
The voice content answered；
Second judging unit, for judging whether described voice content is preset content；
Described adjustment unit, is additionally operable to when the second judging unit is judged as YES, during according to described regulation information to described system
Clock is adjusted.
A kind of 11. terminals are it is characterised in that include:
Be stored with the memorizer of executable program code；
The processor coupling with described memorizer；
Described processor calls the described executable program code of storage in described memorizer, and execution such as claim 1 is to right
Require the method described in 5 any one.
A kind of 12. multimedia synchronous Play Systems are it is characterised in that include: control device and at least one playback equipment；Described
Control device is connected with described playback equipment；Described playback equipment is used for execution if claim 1 is to any one of claim 5 institute
The method stated.
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| CN111727608A (en) * | 2018-02-23 | 2020-09-29 | 日商艾菲克泽股份有限公司 | Content playback program, content playback method, and content playback system |
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