CN101001362B - Method and terminal of on-line playing flow media - Google Patents
Method and terminal of on-line playing flow media Download PDFInfo
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- CN101001362B CN101001362B CN2006100008390A CN200610000839A CN101001362B CN 101001362 B CN101001362 B CN 101001362B CN 2006100008390 A CN2006100008390 A CN 2006100008390A CN 200610000839 A CN200610000839 A CN 200610000839A CN 101001362 B CN101001362 B CN 101001362B
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Abstract
This invention discloses a method and a terminal for on-line playing flow media including: A, a terminal side downloads the flow media to be played from the network side, B, the terminal side determines volume of the buffer-store currently to store the download flow media, C, playing the buffer-stored flow media data. This invented terminal includes: a buffer-stored unit used for buffer-storing download data, a code flow obtaining unit used in getting the code rate of the flow media sent by the network side, a computation unit for download rate used in computing the current download rate, a comparison unit used in comparing said code rate and the current download rate, a buffer-store distribution unit used in deciding a strategy for distributing buffer storage and outputting the result tosaid buffer-storage unit.
Description
Technical field
The present invention relates to field of wireless, particularly relate to the method for online playing stream media and the terminal of online playing stream media.
Background technology
Along with improving constantly of the networked level of social life, Streaming Media has become means indispensable in people's daily life, work and the amusement.On PC, people can pass through the online or download appreciation Streaming Media in internet at present.Along with extensively popularizing of portable terminal (as: mobile phone), people wish to enjoy the Streaming Media of oneself liking whenever and wherever possible.
But,, complete film can not be kept on the portable terminal at present owing to be subjected to the restriction of the memory space of portable terminal.Therefore, need form, online playing stream media by continuous buffer memory.
In the PC+Internet environment during online appreciation Streaming Media, if enter the buffer memory wait state, player can be opened up the buffer area of a fixed size, has only and could continue to play after this buffer area is filled with data at present.Because PC has enough disposal abilities, and Internet also can provide enough bandwidth, thus the number of times of buffer memory and few, and the time of each buffer memory is also shorter.
But in portable terminal+wireless network environment, be subjected to the restriction of the portable terminal disposal ability and the network bandwidth, if still continue to use the strategy of PC+Internet, open up the buffer area of a fixed size, then can make the number of times of buffer memory wait and the time of buffer memory wait at every turn can't obtain balance, bring bad experience to the user.
Summary of the invention
The invention provides the method for online playing stream media and the terminal of online playing stream media, pass through at present to have the discontinuous problem of streaming media playing in the process of the online playing stream media of wireless network in order to solve.
Further solved the adaptive problem of buffer memory that can't realize wireless terminal at present.
The inventive method comprises the following steps:
The user is at the default duration of desiring continuous broadcast of end side;
End side is downloaded Streaming Media to be played from network side;
Obtain the code check of this Streaming Media the description document of the Streaming Media that end side issues from network side;
If described code check is greater than current downloading rate, then the size of described current cache is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again;
Otherwise the size of described current cache is not less than described code check;
When the data volume of the Streaming Media that end side is downloaded from network side is not less than the code check of this Streaming Media, allows the user to start and play stream medium data in the described buffer memory.
Comprise the following steps: to judge the largest buffered whether described current cache size that should distribute can open up less than terminal before the stream medium data in playing described buffer memory, if be current cache then with the described current cache size that should distribute; Otherwise the largest buffered that can open up with terminal is a current cache.
The initial value of described current downloading rate is a network theory speed.
Described current downloading rate is the network rate mean value that occurs in the buffer memory stand-by period point unit duration before.Perhaps, described current downloading rate is the network rate mean value in the duration that occurs playing continuously before the buffer memory stand-by period point.Perhaps, described current downloading rate is calculated in real time, and its value is the network rate mean value in the unit duration before the current point in time.
The terminal of online playing stream media of the present invention comprises: buffer unit, be used for the buffer memory data download, and described terminal also comprises: the code check acquiring unit is used to obtain the code check of the Streaming Media that network side issues; The downloading rate computing unit is used to calculate current downloading rate; Comparing unit is used for the size of more described code check and current downloading rate; The buffer memory allocation units, be used for as if described code check greater than current downloading rate, then the cache size that should distribute is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again, and if described code check is not more than current downloading rate, then the cache size that should distribute is not less than described code check, and allocation result is outputed to described buffer unit; When the data volume that is used for the Streaming Media downloaded from network side is not less than the code check of this Streaming Media, allow the user to start and play the unit of the stream medium data in the described buffer memory.
If the largest buffered that the allocation result of described buffer memory allocation units output can provide greater than described buffer unit, then described buffer unit distributes all buffer memorys.
Beneficial effect of the present invention is as follows:
The present invention bides one's time buffer memory etc. occurring, perhaps in real time the code check and the current downloading rate of the Streaming Media of online broadcast compared, if described code check is greater than current downloading rate, the size of then current distribution buffer memory is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again; Otherwise the size of current distribution buffer memory is not less than described code check.So just realized magnitude relationship, the size of dynamic assignment buffer memory according to described code check and current downloading rate.
In order to support the inventive method, the present invention also provides a kind of terminal, comprising: buffer unit is used for the buffer memory data download; The code check acquiring unit is used to obtain the code check of the Streaming Media that network side issues; The downloading rate computing unit is used to calculate current downloading rate; Comparing unit is used for the size of more described code check and current downloading rate; The buffer memory allocation units are used for the magnitude relationship according to described code check and current downloading rate, and decision distributes the strategy of buffer memory, and allocation result is outputed to described buffer unit.
The present invention provides a kind of method again,, allows to begin immediately to play during greater than the code check of this Streaming Media in the stream medium data amount of judging current cache.
By enforcement of the present invention, the user appreciate by terminal Streaming Media the time, described terminal is bide one's time buffer memory etc. occurring at every turn, perhaps real-time size according to current network condition dynamic adjustments buffer memory, when the situation of frequent interruption appears in the promptly actual duration of playing continuously less than the duration of user preset, automatic and the suitable increase cache size of meeting is to increase the actual duration of broadcast continuously; Otherwise the actual duration of playing continuously is greater than the duration of user preset, can be automatically and the suitable cache size that reduces, and to shorten the time that each buffer memory is waited for.Therefore, the present invention has coordinated long and each buffer memory stand-by period of time of continuous broadcast, reaches better user experience.
From the angle of terminal, adaptive cache has obviously been saved the resource of end side, has improved the processing speed of terminal; And, because the present invention is an adaptive cache,, make the present invention be applicable to the terminal of different abilities so need not the unified buffer memory that adopts fixed size of terminal.
Description of drawings
Fig. 1 is a terminal structure schematic diagram of the present invention;
Fig. 2 is the inventive method flow chart of steps.
Embodiment
For in the process of online playing stream media, buffer memory that can adaptive terminal, the invention provides a kind of terminal, referring to shown in Figure 1, it comprises: Chuan Lian comparing unit, buffer memory allocation units and buffer unit, and code check acquiring unit that links to each other with described comparing unit respectively and downloading rate computing unit successively.
Described code check acquiring unit, the description document that is used for the Streaming Media that issues from network side is obtained the code check of this Streaming Media.In the header field of the Streaming Media of prior art, all carry description document, described the code check of this Streaming Media in the described description document.
Described downloading rate computing unit is used to calculate the network rate mean value in the current point in time unit duration before.
Described comparing unit is used for the code check of more described code check acquiring unit output and the size of the current downloading rate that described downloading rate computing unit is exported.
Described buffer memory allocation units are used to receive the comparative result of described comparing unit, if described code check is greater than current downloading rate, then the cache size that should distribute is the poor of described code check and current downloading rate, and the desire that multiply by user preset again is the duration of broadcast continuously; If described code check is not more than current downloading rate, then the cache size that should distribute is not less than described code check; If the described cache size that should distribute is greater than the buffer memory maximum, then with the buffer memory maximum as the cache size that should distribute.And allocation result outputed to described buffer unit.
Described buffer unit is used for the allocation result according to described buffer memory allocation units output, provides the buffer memory of corresponding size, with the buffer memory data downloaded.
Use above-mentioned terminal, the invention provides the method for adaptive cache in a kind of online broadcast,, comprise the following steps: referring to shown in Figure 2
S1, user confirm online playing stream media.
S2, terminal are obtained the code check of this Streaming Media.
S3, terminal are calculated current downloading rate.
The size of S4, more described code check and current downloading rate, and determine the current buffer memory that should distribute.
Below specifically describe the inventive method by two examples.
Method example one: bide one's time buffer memory etc. occurring, adjust cache size.
S101, user confirm online playing stream media.
The user is according to the experience needs of self, sets in advance the duration that hope can the one-time continuous playing stream media in end side, promptly wishes to occur the time interval that buffer memory is waited for.For example: 20 seconds.
Afterwards, the user uses terminal (for example: mobile phone) broadcast the Streaming Media that network side provides by the choosing of wireless protocols such as GPRS.
S102, terminal are obtained the code check of this Streaming Media.
According to prior art, the header field of the Streaming Media that the media server of network side is broadcast user's choosing earlier is issued to end side, carry description document in the described header field, described the code check (promptly this Streaming Media is play the data of what bytes each second) of this Streaming Media in the described description document.
Terminal of the present invention is obtained the code check of this Streaming Media by its built-in code check acquiring unit from described description document, for example: the code check of this Streaming Media is the 3k byte per second, and outputs to described comparing unit.
S103, terminal are calculated current downloading rate.
Bide one's time buffer memory etc. occurring, terminal of the present invention is calculated current downloading rate by its built-in downloading rate computing unit.Be described downloading rate computing unit according to the unit duration (for example: 10 seconds) of acquiescence, get before the current point in time 10 seconds network rate mean value, obtain current downloading rate, and output to described comparing unit;
Described downloading rate computing unit also can be bide one's time buffer memory etc. occurring, and according to the duration of playing continuously before the current point in time, and the data downloaded amount obtains current downloading rate in the duration of described continuous broadcast, and outputs to described comparing unit.
If be in the initial state of streaming media playing, then described downloading rate computing unit directly uses network theory speed.
The size of S104, more described code check and current downloading rate, and determine the current buffer memory that should distribute.
Terminal of the present invention is passed through the code check of the more described code check acquiring unit output of its built-in comparing unit and the size of the current downloading rate that the downloading rate computing unit is exported, and comparative result is outputed to described buffer memory allocation units.
Described buffer memory allocation units are according to described comparative result, and decision distributes the strategy of buffer memory:
If described code check is greater than current downloading rate, the then current cache size that should distribute is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again.
With formulate be: y=x (a-b).Wherein y represents the current cache size that should distribute; X represents the duration that the desire of user preset is play continuously; A represents code check; B represents current downloading rate.
If described code check is not more than current downloading rate (promptly≤), the then current cache size that should distribute is not less than described code check.
With formulate be: y 〉=a.Wherein y represents the current cache size that should distribute; A represents code check.
If the described current cache size that should the distribute largest buffered that can provide greater than described buffer unit then obviously can't realize, at this moment with described largest buffered as the current cache size that should distribute.
After the described current cache size that should distribute was identified, described buffer memory allocation units were exported allocation result to buffer unit.Described buffer unit provides the buffer zone of corresponding size according to the allocation result of receiving.So far finished the adjustment of a buffer memory.After described buffer zone is filled with data, begin automatically to play; Also can be at described buffer zone buffer memory after being not less than the data volume of code check a, start broadcast by the user.
Bide one's time when buffer memory etc. occurring, return step S103, recomputate the downloading rate that buffer memory stand-by period point occurs, and continue execution in step S104.Realize the self adaptation of terminal buffers by circulating repeatedly.
Method example two: adjust cache size in real time.
S201, user confirm online playing stream media.
The user is according to the experience needs of self, sets in advance the duration that hope can the one-time continuous playing stream media in end side.
Afterwards, the user uses terminal (for example: mobile phone) broadcast the Streaming Media that network side provides by the choosing of wireless protocols such as GPRS.
S202, terminal are obtained the code check of this Streaming Media.
According to prior art, the header field of the Streaming Media that the media server of network side is broadcast user's choosing earlier is issued to end side, carry description document in the described header field, described the code check (promptly this Streaming Media is play the data of what bytes each second) of this Streaming Media in the described description document.
Terminal of the present invention is obtained the code check of this Streaming Media by its built-in code check acquiring unit from described description document, for example: the code check of this Streaming Media is the 3k byte per second, and outputs to described comparing unit.
S203, terminal are calculated current downloading rate.
In this example, terminal of the present invention is calculated once current downloading rate (in real time) each second by its built-in downloading rate computing unit.Be described downloading rate computing unit according to the unit duration (for example: 10 seconds) of acquiescence, get before the current point in time 10 seconds network rate mean value, obtain current downloading rate, and output to described comparing unit.
If be in the initial state of streaming media playing, then described downloading rate computing unit directly uses network theory speed.
The size of S204, more described code check and current downloading rate, and determine the current buffer memory that should distribute.
Terminal of the present invention is passed through the code check of the more described code check acquiring unit output of its built-in comparing unit and the size of the current downloading rate that the downloading rate computing unit is exported, and comparative result is outputed to described buffer memory allocation units.
Described buffer memory allocation units are according to described comparative result, and decision distributes the strategy of buffer memory:
If described code check is greater than current downloading rate, the then current cache size that should distribute is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again.
With formulate be: y=x (a-b).Wherein y represents the current cache size that should distribute; X represents the duration that the desire of user preset is play continuously; A represents code check; B represents current downloading rate.
If described code check is not more than current downloading rate (promptly≤), the then current cache size that should distribute is not less than described code check.
With formulate be: y 〉=a.Wherein y represents the current cache size that should distribute; A represents code check.
If the described current cache size that should the distribute largest buffered that can provide greater than described buffer unit then obviously can't realize, at this moment with described largest buffered as the current cache size that should distribute.
After the described current cache size that should distribute was identified, described buffer memory allocation units were exported allocation result to buffer unit.Described buffer unit provides the buffer zone of corresponding size according to the allocation result of receiving.So far finished the adjustment of a buffer memory.After described buffer zone is filled with data, begin automatically to play; Also can be at described buffer zone buffer memory after being not less than the data volume of code check a, start broadcast by the user.
When next second arrives, return step S203, recomputate the downloading rate of current point in time, and continue execution in step S204.Realize the self adaptation of terminal buffers by circulating repeatedly.
The invention provides the method for another kind of online playing stream media.End side is in buffer memory Streaming Media process to be played, if receive the play instruction immediately that the user sends, whether the stream medium data amount of then judging current cache is less than the code check of this Streaming Media, if then forbid playing; Otherwise begin immediately to play.The code check of described Streaming Media obtains from the description document of this Streaming Media.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. the method for an online playing stream media is characterized in that, comprises the following steps:
The user is at the default duration of desiring continuous broadcast of end side;
End side is downloaded Streaming Media to be played from network side;
Obtain the code check of this Streaming Media the description document of the Streaming Media that end side issues from network side;
If described code check is greater than current downloading rate, then the size of described current cache is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again;
Otherwise the size of described current cache is not less than described code check;
When the data volume of the Streaming Media that end side is downloaded from network side is not less than the code check of this Streaming Media, allows the user to start and play stream medium data in the described buffer memory.
2. the method for claim 1 is characterized in that, comprises the following steps: before the stream medium data in playing described buffer memory
Judge the largest buffered whether described current cache size that should distribute can open up less than terminal, if be current cache then with the described current cache size that should distribute;
Otherwise the largest buffered that can open up with terminal is a current cache.
3. method as claimed in claim 1 or 2 is characterized in that, the initial value of described current downloading rate is a network theory speed.
4. method as claimed in claim 3 is characterized in that, described current downloading rate is the network rate mean value that occurs in the buffer memory stand-by period point unit duration before.
5. method as claimed in claim 3 is characterized in that, described current downloading rate is the network rate mean value in the duration that occurs playing continuously before the buffer memory stand-by period point.
6. method as claimed in claim 3 is characterized in that, described current downloading rate is calculated in real time, and its value is the network rate mean value in the unit duration before the current point in time.
7. the terminal of an online playing stream media comprises: buffer unit, be used for the buffer memory data download, and it is characterized in that described terminal also comprises:
The code check acquiring unit is used to obtain the code check of the Streaming Media that network side issues;
The downloading rate computing unit is used to calculate current downloading rate;
Comparing unit is used for the size of more described code check and current downloading rate;
The buffer memory allocation units, be used for as if described code check greater than current downloading rate, then the cache size that should distribute is the poor of described code check and current downloading rate, multiply by the continuous duration of playing of desire of user preset again, and if described code check is not more than current downloading rate, then the cache size that should distribute is not less than described code check, and allocation result is outputed to described buffer unit;
When the data volume that is used for the Streaming Media downloaded from network side is not less than the code check of this Streaming Media, allow the user to start and play the unit of the stream medium data in the described buffer memory.
8. terminal as claimed in claim 7 is characterized in that, if the largest buffered that the allocation result of described buffer memory allocation units output can provide greater than described buffer unit, then described buffer unit distributes all buffer memorys.
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| CN2006100008390A CN101001362B (en) | 2006-01-11 | 2006-01-11 | Method and terminal of on-line playing flow media |
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| CN2006100008390A CN101001362B (en) | 2006-01-11 | 2006-01-11 | Method and terminal of on-line playing flow media |
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| CN101001362A CN101001362A (en) | 2007-07-18 |
| CN101001362B true CN101001362B (en) | 2010-09-08 |
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Application publication date: 20070718 Assignee: Ocean interactive (Beijing) Information Technology Co., Ltd. Assignor: Tencent Technology (Shenzhen) Co., Ltd. Contract record no.: 2016990000422 Denomination of invention: Method and terminal of on-line playing flow media Granted publication date: 20100908 License type: Common License Record date: 20161009 |
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