CN101107839A - Method and device for playing digital program - Google Patents
Method and device for playing digital program Download PDFInfo
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- CN101107839A CN101107839A CNA2006800030320A CN200680003032A CN101107839A CN 101107839 A CN101107839 A CN 101107839A CN A2006800030320 A CNA2006800030320 A CN A2006800030320A CN 200680003032 A CN200680003032 A CN 200680003032A CN 101107839 A CN101107839 A CN 101107839A
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Abstract
The invention discloses a method of playing back a digital program, which method comprises the steps of: playing back a digital program associated with link information; and acquiring network data corresponding to the link information, for recording the network data in a specific address. The invention also discloses an apparatus for playing back a digital program, and a method and apparatus for reproducing the digital program. With the invention, the network data acquired from a remote end can be recorded when the current interactive TV program is played back, so that the recorded interactive TV program can be completely played back even when the network data at the remote end is no longer available in the future.
Description
Background technology
The present invention relates to a kind of method and apparatus of handling digital program, more particularly, relate to a kind of playing method and device of digital TV program.
Television program broadcasting is the traditional approach of user's acquired information.Along with the development of IP technology, network has become another important path that people obtain information.The network service can provide text, figure, audio-visual information and other different types of information to the user.Under the broadcast mode, broadcaster is delivered to the user by " propelling movement " mode (Push) with programme content.And under the network method of service, the user can obtain information from the webserver on one's own initiative, and this mode is called as " drawing " (Pull).The mutually combining between broadcast service and the network service of developing into of digital television broadcasting brought new prospect.
Digital interactive TV (iTV) program not only comprises audio-visual content, but also comprises interactive application.Some interactive application can accesses network or is connected by network and to obtain data.Set-top box (STB) or interactive television video tape recorder with memory can be with the iTV program recording to storage mediums, and wherein this storage medium can be hard disk or CD, such as DVD+RW dish or blue light (Blu-ray) dish.Video tape recorder can directly write down the iTV program, and they is not play.
The network service provides personalization to the user, and the user can select to watch their interested content.This is a feature that is different from broadcasting.Broadcaster can charge for some extra network service is provided, or uses these to serve to attract clients.
It is the multi-angle program that broadcaster uses an example of network data.For example, during football match, will there be the multi-angle program.For a certain excellent shooting segment, the user may wish to watch them from different angles, and has multiple cameras to follow the trail of whole match usually in the place.Because the utilization rate problem of bandwidth is broadcasted the surge that will cause cost from all programs of different angles simultaneously, and the certain user may wish to watch a plurality of angles, and some user does not then wish so.A kind of good method that addresses this problem is to play main angle from broadcast channel, and other angle is placed on the webserver, and the user can watch these angles when needed.Broadcaster can charge to this service, or uses this feature to attract the user.Interactive program will be determined the demonstration of these angles.They can show or demonstration all over the screen with the form of picture-in-picture.
It is user's normal demand that TV programme is write down.The user wishes and can use personal digital video recorder's recording digital TV program as using analog vtr record analog television program.When the user watched TV programme and finds that it is more interesting, the user wished to write down this TV programme.But,, start visit order by interactive application usually to network for itv program that can accesses network.For example, application can access web server, is used for showing to obtain some image file from server.But in the present existing system that various itv program are provided, video tape recorder can't know that all the iTV program is with accesses network.Thus, video tape recorder just can not write down network data.Network linking network data certain time after live broadcast pointed that provides together with the iTV program may will no longer be available.If video tape recorder does not write down network data during live broadcast, the broadcast of the iTV program that is then write down may be with can not be according to user's expection normal play.
Therefore, when recording interactive formula TV programme, need the network data recording that this TV programme is relevant in local storage device.
Summary of the invention
An object of the present invention is to provide a kind of broadcast one number byte purpose method and apparatus, it can obtain the network data relevant with this digital program when playing digital program, so that be recorded in the local storage device.
Another object of the present invention provides a kind of reproduction one number byte destination device and method, and it can play the digital program that is stored in the local storage device easily.
For this reason, according to an aspect of the present invention, provide a kind of broadcast one number byte purpose method, comprise step: play a digital program, this digital program is associated with link information; With the pairing network data of obtaining this link information, to be used for writing down this network data a specific address.
According to another aspect of the present invention, provide a kind of broadcast one number byte destination device, comprising: a playing device, be used to play a digital program, this digital program is associated with link information; With a deriving means, be used to obtain the pairing network data of this link information, to be used for writing down this network data a specific address.
In addition, the present invention also provides a kind of reproduction a digital program method, comprises step: play a digital program, this digital program is associated with link information; When playing the pairing network data of this link information at needs, play and be stored in local network data in advance.
According to a further aspect of the invention, provide a kind of reproduction a digital program device, comprise a playing device, be used to play a digital program, this digital program is associated with link information; Obtain device with a network data, be used for when needs are play the pairing network data of this link information, obtain and be stored in local network data in advance.
According to the present invention, the network data that obtains from far-end in the time of can writing down this and play this digital program, thus even following when the network data of far-end no longer can be utilized, also can intactly play the digital program that is write down.
By following description and claim that reference is carried out in conjunction with the accompanying drawings, other purpose of the present invention and advantage will be conspicuous, and the present invention is also had more comprehensively understanding.
Description of drawings
The preferred embodiments of the present invention are described below with reference to the accompanying drawings, wherein,
Fig. 1 is broadcast one a number byte purpose flow chart according to an embodiment of the invention;
Fig. 2 shows the schematic diagram of broadcast one number byte destination device according to an embodiment of the invention;
Fig. 3 is the flow chart of reproduction one number byte purpose method according to an embodiment of the invention;
Fig. 4 is the schematic block diagram of reproduction one number byte destination device according to an embodiment of the invention.
In all accompanying drawings, identical reference number is represented similar or identical feature and function;
Embodiment
Describe the preferred embodiments of the present invention with reference to the accompanying drawings in detail.
Fig. 1 is broadcast one a number byte purpose flow chart according to an embodiment of the invention.
As shown in Figure 1, at step S110, play a digital program.Here, digital program is an interactive TV program, and this interactive TV program is associated with link information.Certainly, also can be other forms of program.The multi-form of digital program is not construed as limiting the invention.The digital program of being play can be the digital program of a live broadcast, also can be a digital program that is stored in the local storage device.If the digital program of being play is the digital program of a live broadcast, then need to receive this digital program, and if the digital program of being play is the digital program of playing from local storage device, then play-over this digital program and get final product.
At step S120, intercept sending to the network destination address (for example, URL address) of output packet to obtain network linking.This packet is to send to network by the application in the transport stream of operation digital program.Certainly, directly obtain the network destination address of this network linking in the link information from this application.
Network linking can be inserted in the interactive TV program with multiple different-format, and can insert a plurality of positions in the transport stream.MHP is exactly an example with digital television broadcasting and network service combination.
Because " drawing " characteristic of access to netwoks, network linking is always started by interactive application by the user.Usually network linking is inserted two positions in the transport stream, promptly in the application code or in the application data.Interactive application can directly be guided the user into network data, and perhaps the URL of interactive application utilization embedding application code or application data file is directly connected to network.
Network linking can be the part of application code, or the part of application data, and for example URL is listed in the text, and be employed use.URL also can be the part of application code.
After connecting, application can be read required network data from the webserver.
At step S130, intercept the packet that receives from network to obtain the pairing network data of this network destination address from network.Simultaneously, can also obtain corresponding response message.This network data comprises the data that data that the application that moved is directly obtained from network and user obtain from network by interactive operation.
In addition, produce this network destination address of this network data of reflection and the mapped file (step S140) of the corresponding relation between the local destination location.This local destination location is a specific memory address, can preestablish, and also can determine after storing this network data into local storage device.
Then, at step S150, be recorded in digital program that step S110 plays, the network data of obtaining at step S130 and the mapped file that produces at step S140.
Certainly, this digital program, network data and mapped file can be recorded in same the storage device (as the set-top box of personal digital video recorder or tape storage), also can be recorded in the different storage device (for example a DVD burner or personal computer).
If this digital program has been recorded in the local storage device, then need not to be recorded in once more the digital program that step S110 plays.
Indicate a personal computer to carry out corresponding downloading process based on such consideration.Network browsing sometimes with watch the movable inconsistent of digital program resemble the interactive television.The display effect of some webpage on television set is good inadequately.Even some television set is not supported the latest network form.But broadcaster is another directly to be attempted to provide extra data content by itv program, attracts the televiewer to visit specific website.
For example, broadcaster can be inserted into certain figure or text (not being actual URL) in the itv program, offers the televiewer with transport stream.The televiewer can select to watch or download the web page contents (preamble claims " network data ") with these figures or text link.Some web page contents (as " sudden strain of a muscle " file) inconvenience is play on television set.So the user can select these web page contents are downloaded on the equipment (as personal computer) that is fit to these contents of broadcast, so that watch later on.
Spectators may be disinclined to open personal computer when watching itv program, also may have little time to open personal computer, so the web page contents of broadcasting is downloaded.Yet according to method shown in Figure 1, when the record interactive television program, the network data that needs can be downloaded in the personal computer is automatically downloaded.If linked to as if actual content, then can with the content intact of reality download in the personal computer.If linked to as if a webpage, also can in the browser of personal computer, increase by one the sensing this webpage bookmark, thereby the user always can see the latest edition of this webpage.
Fig. 2 shows the schematic diagram of broadcast one number byte destination device 200 according to an embodiment of the invention.This device 200 can be the part of a set-top box.
As shown in Figure 2, the device of this processing digital program comprises a playing module 210 and an acquisition module 220.In addition, the device of this processing digital program also comprises a logging modle 230 and a storage device 240.
As shown in Figure 2, a digital program signal iTV is sent to playing module 210, and wherein this digital program is an interactive TV program, and this interactive TV program is associated with link information.Certainly, this digital program also can be the digital program of other form.This digital program signal iTV can be the digital program of live broadcast, also can be the digital program of playing from a local storage device.
This digital program signal iTV comprises audio-visual data and interactive application.The operation of this interactive application makes playing module 210 be linked to network link information included among the digital program signal iTV.Network linking is generally the URL form, comprises protocol information, network destination address information and authorization message etc.From this network destination address information webserver pointed, read corresponding network data.Audio-visual data (comprising voice data and video data) in 210 pairs of iTV signals of playing module and this network data are play by image display devices such as TV program player after handling.
Network data refers to the data that obtain from the webserver, and is the payload portions of TCP/IP bag.A TCP/IP comprises head part and payload portions.Head part comprises the information that is used to communicate by letter, and payload portions comprises the data that connect transmission by network.In the present embodiment, network data only refers to the payload data of IP bag.For example, this network data can be a text, as footballplayer.txt, or image file, as player.jpg.
In addition, this acquisition module 220 comprises a mapped file creation apparatus 222, is used to produce this network destination address of this network data of reflection and the mapped file of the corresponding relation between the local destination location.This local destination location is a specific storage address in this locality, can preestablish, and also can determine after storing this network data into local storage device.
Certainly, this mapped file creation apparatus 222 also can be not as the part of deriving means 220, and be provided with separately.
This local destination location is a memory address in the included storage device 240 of device 200.This local destination location can also be a memory address in a storage device that does not belong to device 200 (showing among the figure, as a DVD burner).This moment, device 200 also comprised a dispensing device (not shown), and the network data that is used for obtaining sends to this memory address.
Logging modle 230 also can be in device 200 outside settings separately.
This digital program, network data and mapped file are recorded in the included local storage device 240 of device 200.Certainly, this digital program, network data and mapped file also can be recorded in and install in the independently storage device that was arranged in 200 minutes.
If after storing this network data into local storage device, determine the local destination location, then can by network data recording module 236 network data be stored in the storage device 240 earlier, and, pass to mapped file creation apparatus 222 as file path and filename with the local stored information of the network data of being stored.Mapped file creation apparatus 222 produces corresponding mapped file in view of the above.
Certainly, this mapped file also can be generated by an equipment that is arranged on outside the device 200.
Show a mapped file below by way of example.
<Link_Info>
<Link_loop>
<Original_link>ftp://user1:TVuser@TV.com.cn/animationl.sfw</Original_link>
<Content_ref>/TV_com_cn/animationl.sfw</Content_ref>
</Link_loop>
<Link_loop>
<Original_link>ftp://user1:TVuser@TV.com.cn/player2.jpg</Original_link>
<Content_ref>/TV_com_cn/player2.jpg</Content_ref>
</Link_loop>
<Link_loop>
......
</Link_loop>
Wherein, " Original_link " is the URL information that is used for a link, and " Content_ref " is the memory location of content in local storage device that is linked.If during playing, the digital program of being stored will be connected to the webserver to obtain player2.jpg, and then Play System can obtain this player2.jpg from local storage device.
Like this, during playing digital program, employed network data of interactive application and map information together can be stored in the storage device 240 with digital program signal iTV.When in the future playing the digital program that is write down, player can be visited the network data that is stored in the storage device 240, thereby can reproduce this digital program fully, and reduces or avoided visit to network.
Above-mentioned storage device 240 can be hard disk or CD (DVD or Blu-ray Disc).
Introduce below and how to obtain network link information and network data.
First kind of mode is to use an IP module to obtain all IP bags.Because network connection information and network data transmission are based on procotol (IP), so the IP bag is the carrier of bearer network data.This acquisition module 220 is also referred to as packet filter.The packet filter technology has been widely used in the fire compartment wall of computer.This mode is to obtain the most direct mode of network connection information and network data.
The second way is to utilize the agency to obtain the IP bag.The all-network link information is pointed to a proxy module.The network data that this proxy module will write down network connecting request and obtain from network.
Packet filter module can be the module of filtering all IP bags, and proxy module can combine with the middleware of playing module.Interactive application only starts the connection to network, and proxy module meets with a response from network, writes down network data and the data of returning are pointed to interactive application.
Fig. 3 is the flow chart of the method for reproduction digital program according to an embodiment of the invention.
As shown in Figure 3, at step S310, play a digital program.As mentioned before, this digital program can be an itv program, can have one or more application.Application in the digital program connects relevant with network.That is to say that this digital program is associated with link information.
At step S320, move the application in this digital program.
At step S330, judge to use whether need to obtain network data.
If the judged result of step S330 is for being, then handles and proceeding to step S340; Otherwise, handle proceeding to step S360.
At step S340, inquiry is stored in local mapped file, and the network that obtains application need foundation connects and is stored in local network data and maybe needs from the corresponding relation between the network data of network download.
At step S350, according to the corresponding relation that obtains at step S340,, perhaps obtain network data, and reproduce the network data that is obtained from network perhaps from this locality.
At step S360, judge whether the digital program of being play finishes.
If the judged result of step S360 is then handled and is turned back to step S330 for not; Otherwise processing finishes.
Above-mentioned steps S340 is optional.
Above-mentioned steps S320 also is optional.Can directly reproduce and be stored in local network data.
To be stored in local network data in order using, can in playing device, to set up an agency together with digital program.When broadcast is stored in local digital program and application when beginning to obtain network data, this agency will determine from network still to be to obtain relevant network data from local storage by the mapped file of analyzing stored in this locality.
During live broadcast, interactive application will connect the content that reads link from network by network.When storage has the digital program of the link of embedding and during from the local storage playing digital program, uses and also will attempt to be connected to network.Therefore, should application code when storage is used its make amendment, or playing device (as player) must be redirected application to obtain network data from local storage.When storage is used it being made amendment is not a practicable solution, and this is because tape deck (as video tape recorder) needs to analyze all application codes.This is unsuitable for real time record, and if use with transport stream and do not store respectively, what for to amended application being multiplexed in the transport stream once more.
Under actual conditions, some linked contents can be stored in this locality, and some linked contents can obtain from network.
Fig. 4 is the schematic block diagram of the device of reproduction digital program according to an embodiment of the invention.
Always, the playing device among this embodiment comprises the network data acquisition device that is used for playing the device of the digital program that is write down and is used for obtaining the network data that is stored in this locality in advance when needing the pairing network data of link information of playing digital program.Selectively, the playing device among this embodiment can also comprise and being used for before reproduction is stored in local network data that inquiry is stored in local mapped file, to obtain the device of the relation between described network connection and the described network data.
Specifically, label 410 expression playing modules, label 420 expression proxy modules, label 430 expression judge modules, label 440 expression access modules, label 450 expressions are positioned at local nonvolatile memory, label 460 expression networks.
Playing module 410 obtains the digital program that write down from nonvolatile memory 450.The digital program of being stored comprises audio and application.Then, playing module 410 audio plays/video flowing, and according to scene operation application.When network connecting request was sent in the application that is moved, this network connecting request was forwarded to proxy module 420.
Then, judge module 430 judges whether the network data that is linked has been recorded in the nonvolatile memory 450.
If the network data that is linked is not recorded in the nonvolatile memory 450, then access modules 440 is directed to corresponding server in the network 460 to connection request, and obtains the network data that linked from network 460.
If the network data that is linked has been recorded in the nonvolatile memory 450, then access modules 440 will be read the network data that is write down by file I/O (input-output file) from nonvolatile memory 450, and the network data of reading is transmitted to playing module 410.
Playing module 410 shown in Figure 4 can be a player, perhaps set-top box that has memory, or have the CD writer of playing function.Playing module 410 is play when containing the live show of network linking, can forbid proxy module 420, thereby directly obtain data from network.When playing module 410 is play the program that is write down in the nonvolatile memory 450, use proxy module 420 to obtain network data.As mentioned before, network data or take from nonvolatile memory 450 is perhaps taken from network 460.
For example, when interactive application was initiated network connecting request, proxy module 420 was checked URL.If listed this URL in link information file that is write down or mapped file, then proxy module 420 will obtain the network data that linked from local nonvolatile memory 450; Otherwise, obtain the network data that is linked from network 460.Alternately, proxy module 420 also can at first be attempted obtaining the network data that linked from network 460.Can not be from network data that network 460 obtains to be linked the time, 420 trials of proxy module obtain the network data that linked from local nonvolatile memory 450.
Digital program among the present invention except itv program, also can adopt other form.Digital program multi-form is not construed as limiting the invention.
Although described the present invention, should be appreciated that this openly can not being interpreted as limits according to present preferred embodiment.After reading above-mentioned disclosing, for those skilled in the art, various changes and remodeling become apparent undoubtedly.Therefore, claims to be interpreted as covering fall within true spirit of the present invention and the scope the institute change and retrofit.
Claims (14)
1. play a number byte purpose method for one kind, comprise step:
(a) play a digital program, this digital program is associated with link information; With
(b) obtain the pairing network data of this link information, to be used for writing down this network data a specific address.
2. the method for claim 1 also comprises step: receive described digital program.
3. the method for claim 1 also comprises step: write down described digital program.
4. the method for claim 1 also comprises step: write down described network data.
5. the method for claim 1 also comprises step:
Create a mapped file, this mapped file reflects the corresponding relation of described particular address and described link information.
6. method as claimed in claim 5 also comprises step: write down described mapped file.
7. play a number byte destination device for one kind, comprising:
A playing device is used to play a digital program, and this digital program is associated with link information; With
A deriving means is used to obtain the pairing network data of this link information, to be used for writing down this network data a specific address.
8. device as claimed in claim 7 also comprises a tape deck, is used to write down described digital program and described network data.
9. device as claimed in claim 7 also comprises a dispensing device, is used for described network data is sent to described particular address.
10. device as claimed in claim 7, wherein said deriving means also comprise a mapped file creation apparatus, are used to create a mapped file, and this mapped file reflects the corresponding relation of described particular address and described link information.
11. one kind is reproduced a digital program method, comprises step:
Play a digital program, this digital program is associated with link information; With
When needs are play the pairing network data of this link information, play and be stored in local network data in advance.
12. method as claimed in claim 11 also comprises step:
According to a mapped file and described link information, obtain the described local network data that is stored in advance.
13. one kind is reproduced a digital program device, comprising:
A playing device is used to play a digital program, and this digital program is associated with link information; With
A network data obtains device, is used for when needs are play the pairing network data of this link information, obtains and is stored in local network data in advance.
14. device as claimed in claim 13, wherein said playing device also are used to play described network data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006800030320A CN101107839A (en) | 2005-01-25 | 2006-01-17 | Method and device for playing digital program |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510002824.3 | 2005-01-25 | ||
| CN200510002824 | 2005-01-25 | ||
| CNA2006800030320A CN101107839A (en) | 2005-01-25 | 2006-01-17 | Method and device for playing digital program |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101107839A true CN101107839A (en) | 2008-01-16 |
Family
ID=39000654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800030320A Pending CN101107839A (en) | 2005-01-25 | 2006-01-17 | Method and device for playing digital program |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101107839A (en) |
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2006
- 2006-01-17 CN CNA2006800030320A patent/CN101107839A/en active Pending
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