CN106686444A - Object carousel data downloading method and system based on DSM-CC (digital storage media command and control) protocol - Google Patents
Object carousel data downloading method and system based on DSM-CC (digital storage media command and control) protocol Download PDFInfo
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- CN106686444A CN106686444A CN201611256585.9A CN201611256585A CN106686444A CN 106686444 A CN106686444 A CN 106686444A CN 201611256585 A CN201611256585 A CN 201611256585A CN 106686444 A CN106686444 A CN 106686444A
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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
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
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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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4335—Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6433—Digital Storage Media - Command and Control Protocol [DSM-CC]
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
- H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Information Transfer Between Computers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Computer And Data Communications (AREA)
Abstract
The invention relates to an object carousel data downloading method and system based on DSM-CC (digital storage media command and control) protocol; a buffering space is pre-allocated in a memory of a digital television set, OC (object carrousel) data of DSM-CC data are cyclically downloaded continuously from a broadcast data stream when the digital television set operates, each single OC data is removed after being downloaded and maintained for a set time, next OC data is continuously downloaded, single OC data is cached constantly in the buffering space, whether the corresponding OC data is present in the cache space or not is detected first when a user requests for data, the data is called directly from the cache space if yes, only the corresponding OC data is downloaded from a server according to the correspondence if not, the required OC data is required only, downloading all DSM-CC data is not required, the storage space and system resource of the digital television set are greatly saved, user-required data can be fed back to a user quickly and timely, user's time is saved, and good user experience is provided.
Description
Technical field
The present invention relates to digital TV field, more particularly to a kind of object carousel data download side based on DSM-CC agreements
Method and system.
Background technology
DSM-CC (Digital Storage Media Command and Control, Digital Storage Media Command and control
Extended Protocol processed) agreement is the important component part of DVB standard (DVB).With the popularization of digital television business,
Data broadcast service based on DSM-CC agreements is increasingly popularized, and user has been accustomed to browsing webpage from TV, has browsed
Network text data, browse network audio, video data etc., this brings more functions and resource to user.
DSM-CC data carousels (DC-Data carouse) are a kind of periodic transmission data modules in back-level server end
To the data broadcast service of user side, data module therein is the repetitive cycling broadcast in broadcast data stream, if client
Specific in receiving data carousel or the data module (webpage, text, picture, audio frequency and video etc. data) specified are wished in end, only
Need to be received when the data module is broadcasted.Object carousel (object carouse-OC) is on the basis of data carousel
On added one layer of encapsulation, using BIOP (broadcast inter-ORB protocol) form encapsulation of data, and data are claimed
For object.Object carousel mainly includes srg Service Gateway objects (Service Gateway Object), dir directory objects
(Directory Object), fil file objects (File Object), str flow objects (Stream Object), ste stream things
Part object (stream Event Object), by the parsing to these objects, can set up corresponding catalogue, parse
The data of DSM-CC corresponding objects, such as：The data such as picture, text, audio frequency and video can be parsed.
But, in broadcast data stream, can there is substantial amounts of DSM-CC data, substantial amounts of network image data, network text
Notebook data, even than larger audio, video data, during different OC data are stored in respectively, current DSM-CC data are downloaded
Mode is searched by blind, and all DSM-CC data in broadcast data stream are downloaded, and this is needed all of DSM-CC
Data are prepared in advance, and can be quickly found out during user's request data and return to user.But in practical situation, if DSM-CC
Data are excessive, and that will waste more memory spaces, and user's request, when coming, data differ and surely downloaded in advance
Finish, and the demand of user may be certain pictures, certain text data in certain OC object, or simply a certain section
The data of audio frequency and video, it is only necessary to download the OC data.And the data that the data carousel of DSM-CC needs in spite of user,
Can completely download, the memory space and system resource of this with regard to significant wastage digital television devices (such as Set Top Boxes), it is impossible to
The rapid data feedback for timely needing user greatly wastes user time to user, and to user bad body is brought
Test.
The content of the invention
In view of this, it is necessary to need to download all when downloading DSM-CC data for above-mentioned DSM-CC protocol datas carousel
DSM-CC data, significant wastage digital television devices memory space and resource, the problem lost time, there is provided one kind is based on DSM-
The object carousel data download method of CC agreements and system.
A kind of object carousel data download method based on DSM-CC agreements that the present invention is provided, comprises the steps：
S10：One piece of spatial cache is separated in digital television devices internal memory；
S20：When digital television devices work, by downloading each OC data in DSM-CC data in broadcast data stream successively
To spatial cache, and an OC data all download to reservation setting time after spatial cache and remove, and continue to download the next one
OC data, circulation is carried out；
S30：In user's request data, obtain the URL addresses of user's transmission and be analyzed, obtain URL addresses institute right
The OC data answered；
S40：Whether the OC data of current cache are the OC data corresponding to URL addresses in detection spatial cache, if then
User is transferred to by OC data are obtained in spatial cache, if not then arriving server end according to corresponding relation, corresponding OC numbers is downloaded
According to transferring to user.
In one of which embodiment, step S30 is specially：Clothes are determined according to the URL addresses that user sends
Business device end ID, and determine corresponding OC data PID in server end, determine the corresponding OC numbers in URL addresses by OC data PID
According to.
In one of which embodiment, step S40 is specially：Server end ID is gone out according to URL address resolution
With OC data PID, corresponding pmt table in broadcast data stream is received according to server end ID, by parsing pmt table URL is parsed
Corresponding OC data PID in address, then receive and preserve the section data of DSM-CC according to reception OC data PID, pass through
Section data are parsed by the specification of DSM-CC agreements, and OC data are obtained after parsing.
In one of which embodiment, step S40 is specially：Parse section data when, it is main to protect
The message of four kinds of objects is deposited, is respectively：Flow message, file message, directory messages and Service Gateway message, by these four objects
Message is preserved and obtain OC data.
In one of which embodiment, step S40 also includes：If the corresponding OC data in URL addresses are multiple,
Then obtain whole OC data PID to be downloaded simultaneously.
A kind of object carousel data downloading system based on DSM-CC agreements that the present invention is provided, including：
Spatial cache distribute module, separates one piece of spatial cache in digital television devices internal memory；
Spatial cache data download module, when digital television devices work, by downloading DSM- in broadcast data stream successively
Each OC data is to spatial cache in CC data, and an OC data are all downloaded to and retain after spatial cache setting time i.e. clearly
Remove, continue to download next one OC data, circulation is carried out；
URL address processing modules, in user's request data, obtain the URL addresses of user's transmission and are analyzed, and obtain
OC data corresponding to URL addresses；
Whether OC data acquisition modules, the OC data for detecting current cache in spatial cache are the OC corresponding to URL addresses
Data, if then transferring to user by acquisition OC data in spatial cache, if not then arriving server end according to corresponding relation, download
Corresponding OC data transfer to user.
In one of which embodiment, the URL address processing modules determine clothes according to the URL addresses that user sends
Business device end ID, and determine corresponding OC data PID in server end, determine the corresponding OC numbers in URL addresses by OC data PID
According to.
In one of which embodiment, the OC data acquisition modules go out server end ID according to URL address resolution
With OC data PID, corresponding pmt table in broadcast data stream is received according to server end ID, by parsing pmt table URL is parsed
Corresponding OC data PID in address, then receive and preserve the section data of DSM-CC according to reception OC data PID, pass through
Section data are parsed by the specification of DSM-CC agreements, and OC data are obtained after parsing.
In one of which embodiment, the OC data acquisition modules parse section data when, it is main to protect
The message of four kinds of objects is deposited, is respectively：Flow message, file message, directory messages and Service Gateway message, by these four objects
Message is preserved and obtain OC data.
In one of which embodiment, if the corresponding OC data in URL addresses are multiple, the OC data acquisition modules
Then obtain whole OC data PID to be downloaded simultaneously.
Object carousel data download method and system of the present invention based on DSM-CC agreements, in digital television devices internal memory
Allocate a cushion space in advance, when digital television devices work, constantly DSM-CC numbers are downloaded in circulation by broadcast data stream
According to OC data, and OC data have downloaded and have been removed after reservation setting time, continue to download next one OC data, are caching
All the time an OC data are cached in space, detects whether there are corresponding OC numbers in spatial cache first when user's request data
According to, if having directly by spatial cache in transfer, do not go server end only to download corresponding OC data according to corresponding relation again,
This just only needs to the OC data needed for downloading, it is not necessary to whole DSM-CC data are downloaded, so as to be greatly saved DTV
The memory space and system resource of equipment, the data feedback that rapidly timely can be needed user has saved user to user
Time, to user good experience is brought.
Description of the drawings
Fig. 1 is the flow chart of the object carousel data download method based on DSM-CC agreements in one embodiment；
Fig. 2 is the structure chart of the object carousel data downloading system based on DSM-CC agreements in one embodiment.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Fig. 1 is the flow chart of the object carousel data download method based on DSM-CC agreements in one embodiment, such as Fig. 1
Shown, the method comprises the steps：
S10：One piece of spatial cache is separated in digital television devices internal memory.
Digital television devices are generally configured with certain internal memory, but internal memory is often limited, are to enable data quick obtaining
And few committed memory space, in the embodiment, first separates one piece of caching being sized empty in digital television devices internal memory
Between carrying out the caching of data.
S20：When digital television devices work, by downloading each OC data in DSM-CC data in broadcast data stream successively
To spatial cache, and an OC data all download to reservation setting time after spatial cache and remove, and continue to download the next one
OC data, circulation is carried out.
After spatial cache is separated, because DSM-CC data are all to be stored in OC numbers one by one respectively in broadcast data stream
According in, and the periodic cycle transmission in broadcast data stream, when digital television devices work, namely spread in broadcast data
During defeated, DSM-CC data are also by the transmission of periodic cycle, therefore in embodiment, DSM-CC data are periodically being followed
When ring is transmitted, then by downloading in DSM-CC data each OC data in broadcast data stream successively to spatial cache.Due to caching sky
Between it is limited, in downloading process, (each OC data can have OC data PID (package identification) of itself to an OC data, pass through
OC data PID can determine corresponding OC data) all download to only retain after spatial cache that a setting time is purged (can
Realized with the size by adjustment spatial cache), continue to download next one OC data, circulation is carried out, thus can be empty in caching
Between the middle moment have an OC data, and and excessive memory headroom will not be taken.
S30：In user's request data, obtain the URL addresses of user's transmission and be analyzed, obtain URL addresses institute right
The OC data answered.
When user needs to ask DCM-CC data this moment, user needs the URL addresses for sending data to carry out request of data,
Get the URL addresses of user's transmission and be analyzed, obtain the corresponding OC data in URL addresses.Specifically, sent according to user
URL addresses determine server end ID, and determine corresponding OC data PID in server end, determine URL by OC data PID
The corresponding OC data in address.
S40：Whether the OC data of current cache are the OC data corresponding to URL addresses in detection spatial cache, if then
User is transferred to by OC data are obtained in spatial cache, if not then arriving server end according to corresponding relation, corresponding OC numbers is downloaded
According to transferring to user.
It is determined that after the corresponding OC data in URL addresses, due in step S20 spatial cache always in circular buffer OC numbers
According to therefore whether the OC data of current cache are the OC data corresponding to URL addresses in detection spatial cache, if it is can be from
Direct access OC data in spatial cache, without the need for downloading again, can quickly give user.If not then needing server
End is gone to download OC data according to corresponding relation.
Further, download corresponding OC data steps according to corresponding relation to server end to be specially：Solved according to URL addresses
Server end ID and OC data PID are separated out, corresponding pmt table (program map in broadcast data stream is received according to server end ID
Table), corresponding OC data PID in URL addresses are parsed by parsing pmt table, then receive and protect according to reception OC data PID
Section (section) data of DSM-CC are deposited, by the specification of DSM-CC agreements, section data is parsed, after parsing
Obtain OC data.Further, parse section data when, mainly preserve the message of four kinds of objects, be respectively：Stream disappears
Breath (stream message), file message (file message), directory messages (Directory message) and business
Gateway messages (service gateway message), these four object messages are preserved and obtain OC data.
If additionally, the corresponding OC data in URL addresses are multiple, obtain whole OC data PID and be downloaded simultaneously, improve
Download efficiency.
The object carousel data download method of DSM-CC agreements should be based on, in digital television devices internal memory one was allocated in advance
Individual cushion space, when digital television devices work, by broadcast data stream, constantly the OC data of DSM-CC data are downloaded in circulation,
And an OC data have been downloaded and removed after reservation setting time, continue to download next one OC data, in spatial cache all the time
One OC data of caching, detect first whether there is corresponding OC data in spatial cache when user's request data, straight if having
Connect and transferred by spatial cache, do not go server end only to download corresponding OC data according to corresponding relation again, this is just only needed to
OC data needed for downloading, it is not necessary to whole DSM-CC data are downloaded, so as to be greatly saved digital television devices (such as machine
Top box) memory space and system resource, can rapidly timely by user need data feedback to user, save user
Time, to user good experience is brought.
Meanwhile, the present invention also provides a kind of object carousel data downloading system based on DSM-CC agreements, as shown in Fig. 2
The system includes：
Spatial cache distribute module 100, separates one piece of spatial cache in digital television devices internal memory.
Digital television devices are generally configured with certain internal memory, but internal memory is often limited, are to enable data quick obtaining
And few committed memory space, in the embodiment, spatial cache distribute module 100 first separates one in digital television devices internal memory
The spatial cache that block is sized is carrying out the caching of data.
Spatial cache data download module 200, when digital television devices work, by downloading successively in broadcast data stream
Each OC data is to spatial cache in DSM-CC data, and an OC data are all downloaded to and retain setting time after spatial cache
Remove, continue to download next one OC data, circulation is carried out.
After spatial cache is separated, because DSM-CC data are all to be stored in OC numbers one by one respectively in broadcast data stream
According in, and the periodic cycle transmission in broadcast data stream, when digital television devices work, namely spread in broadcast data
During defeated, DSM-CC data are also by the transmission of periodic cycle, therefore in embodiment, DSM-CC data are periodically being followed
When ring is transmitted, spatial cache data download module 200 is then by downloading successively each OC number in DSM-CC data in broadcast data stream
According to spatial cache.Because spatial cache is limited, in downloading process, (each OC data can have the OC of itself to an OC data
Data PID (package identification), by OC data PID corresponding OC data are can determine) all download to after spatial cache only
Retain setting time and be purged (size that can pass through adjustment spatial cache is realized), continue to download next one OC data,
Circulation is carried out, thus can in spatial cache the moment have an OC data, and and excessive memory headroom will not be taken.
URL address processing modules 300, in user's request data, obtain the URL addresses of user's transmission and are analyzed,
Obtain the OC data corresponding to URL addresses.
When user needs to ask DCM-CC data this moment, user needs the URL addresses for sending data to carry out request of data,
URL address processing modules 300 get the URL addresses of user's transmission and are analyzed, and obtain the corresponding OC data in URL addresses.
Specifically, URL address processing modules 300 determine server end ID according to the URL addresses that user sends, and determine in server end
Corresponding OC data PID, by OC data PID the corresponding OC data in URL addresses are determined.
OC data acquisition modules 400, whether the OC data for detecting current cache in spatial cache are corresponding to URL addresses
OC data, if then transferring to user by direct access OC data in spatial cache, if not then arriving server end according to correspondence pass
System, downloads corresponding OC data and transfers to user.
It is determined that after the corresponding OC data in URL addresses, because spatial cache is always in circular buffer OC data, therefore OC numbers
Detect that whether the OC data of current cache in spatial cache are the OC data corresponding to URL addresses according to acquisition module 400, if
Then can from spatial cache direct access OC data, without the need for downloading again, can quickly give user.If not then needing
Server end is gone to be gone to download OC data according to corresponding relation.
Further, OC data acquisition modules 400 go out server end ID and OC data PID according to URL address resolution, according to clothes
Business device end ID receives corresponding pmt table (Program Map Table) in broadcast data stream, and by parsing pmt table URL addresses pair are parsed
OC data PID answered, then receive and preserve section (section) data of DSM-CC according to reception OC data PID, pass through
Section data are parsed by the specification of DSM-CC agreements, and OC data are obtained after parsing.Further, OC data acquisitions mould
Block 400 parse section data when, mainly preserve the message of four kinds of objects, be respectively：Flow message (stream
Message), file message (file message), directory messages (Directory message) and Service Gateway message
(service gateway message), these four object messages is preserved and obtain OC data.
Additionally, if the corresponding OC data in URL addresses are multiple, OC data acquisition modules 400 then obtain whole OC data PID
It is downloaded simultaneously, improves download efficiency.
The object carousel data downloading system of DSM-CC agreements should be based on, spatial cache distribute module 100 is in DTV
Allocate a cushion space in device memory in advance, when digital television devices work, spatial cache data download module 200 by
Constantly the OC data of DSM-CC data are downloaded in circulation in broadcast data stream, and an OC data have been downloaded after reservation setting time i.e.
Remove, continue to download next one OC data, cache an OC data all the time in spatial cache, the OC numbers when user's request data
Detect whether there are corresponding OC data in spatial cache first according to acquisition module 400, if having directly by spatial cache in transfer,
Server end is not gone only to download corresponding OC data according to corresponding relation again, this just only needs to the OC data needed for downloading, no
Need to download whole DSM-CC data, so as to being greatly saved the memory space of digital television devices (such as Set Top Box) and being
System resource, the data feedback that rapidly timely can be needed user has saved user time to user, brings well to user
Experience.
Object carousel data download method and system of the present invention based on DSM-CC agreements, in digital television devices internal memory
Allocate a cushion space in advance, when digital television devices work, constantly DSM-CC numbers are downloaded in circulation by broadcast data stream
According to OC data, and OC data have downloaded and have been removed after reservation setting time, continue to download next one OC data, are caching
All the time an OC data are cached in space, detects whether there are corresponding OC numbers in spatial cache first when user's request data
According to, if having directly by spatial cache in transfer, do not go server end only to download corresponding OC data according to corresponding relation again,
This just only needs to the OC data needed for downloading, it is not necessary to whole DSM-CC data are downloaded, so as to be greatly saved DTV
The memory space and system resource of equipment (such as Set Top Box), the data feedback that rapidly timely can be needed user is to use
Family, has saved user time, and to user good experience is brought.
These are only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Any modification, equivalent and improvement for being made within principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of object carousel data download method based on DSM-CC agreements, it is characterised in that comprise the steps：
S10：One piece of spatial cache is separated in digital television devices internal memory；
S20：When digital television devices work, by downloading in DSM-CC data each OC data in broadcast data stream successively to slow
Space is deposited, and an OC data all download to reservation setting time after spatial cache and remove, and continue to download next one OC numbers
According to circulation is carried out；
S30：In user's request data, obtain the URL addresses of user's transmission and be analyzed, obtain corresponding to URL addresses
OC data；
S40：Whether the OC data of current cache are the OC data corresponding to URL addresses in detection spatial cache, if then by delaying
Deposit acquisition OC data in space and transfer to user, if not then arriving server end according to corresponding relation, download corresponding OC data and hand over
By user.
2. the object carousel data download method based on DSM-CC agreements according to claim 1, it is characterised in that described
Step S30 is specially：Server end ID is determined according to the URL addresses that user sends, and determines corresponding OC numbers in server end
According to PID, by OC data PID the corresponding OC data in URL addresses are determined.
3. the object carousel data download method based on DSM-CC agreements according to claim 2, it is characterised in that described
Step S40 is specially：Server end ID and OC data PID are gone out according to URL address resolution, broadcast number is received according to server end ID
According to corresponding pmt table in stream, corresponding OC data PID in URL addresses are parsed by parsing pmt table, then according to reception OC numbers
The section data of DSM-CC are received and preserved according to PID, by the specification of DSM-CC agreements, section data are solved
Analysis, obtains OC data after parsing.
4. the object carousel data download method based on DSM-CC agreements according to claim 3, it is characterised in that described
Step S40 is specially：Parse section data when, mainly preserve the message of four kinds of objects, be respectively：Flow message, file
Message, directory messages and Service Gateway message, these four object messages are preserved and obtain OC data.
5. the object carousel data download method based on DSM-CC agreements according to claim 4, it is characterised in that described
Step S40 also includes：If the corresponding OC data in URL addresses are multiple, obtain whole OC data PID and be downloaded simultaneously.
6. a kind of object carousel data downloading system based on DSM-CC agreements, it is characterised in that include：
Spatial cache distribute module, separates one piece of spatial cache in digital television devices internal memory；
Spatial cache data download module, when digital television devices work, by downloading DSM-CC numbers in broadcast data stream successively
Each OC data is to spatial cache according in, and an OC data all download to reservation setting time after spatial cache and remove,
Continue to download next one OC data, circulation is carried out；
URL address processing modules, in user's request data, obtain the URL addresses of user's transmission and are analyzed, and obtain URL
OC data corresponding to address；
Whether OC data acquisition modules, the OC data for detecting current cache in spatial cache are the OC data corresponding to URL addresses,
If then transferring to user by acquisition OC data in spatial cache, if not then arriving server end according to corresponding relation, correspondence is downloaded
OC data transfer to user.
7. the object carousel data downloading system based on DSM-CC agreements according to claim 6, it is characterised in that described
URL address processing modules determine server end ID according to the URL addresses that user sends, and determine corresponding OC numbers in server end
According to PID, by OC data PID the corresponding OC data in URL addresses are determined.
8. the object carousel data downloading system based on DSM-CC agreements according to claim 7, it is characterised in that described
OC data acquisition modules go out server end ID and OC data PID according to URL address resolution, and according to server end ID broadcast number is received
According to corresponding pmt table in stream, corresponding OC data PID in URL addresses are parsed by parsing pmt table, then according to reception OC numbers
The section data of DSM-CC are received and preserved according to PID, by the specification of DSM-CC agreements, section data are solved
Analysis, obtains OC data after parsing.
9. the object carousel data downloading system based on DSM-CC agreements according to claim 8, it is characterised in that described
OC data acquisition modules parse section data when, mainly preserve the message of four kinds of objects, be respectively：Flow message, file
Message, directory messages and Service Gateway message, these four object messages are preserved and obtain OC data.
10. the object carousel data downloading system based on DSM-CC agreements according to claim 9, it is characterised in that if
The corresponding OC data in URL addresses are multiple, and the OC data acquisition modules then obtain whole OC data PID while being downloaded.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256585.9A CN106686444B (en) | 2016-12-30 | 2016-12-30 | Object carousel data downloading method and system based on DSM-CC protocol |
| PCT/CN2017/106331 WO2018120999A1 (en) | 2016-12-30 | 2017-10-16 | Dsm-cc protocol-based method and system for downloading object carousel data |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256585.9A CN106686444B (en) | 2016-12-30 | 2016-12-30 | Object carousel data downloading method and system based on DSM-CC protocol |
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| CN106686444A true CN106686444A (en) | 2017-05-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120999A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市九洲电器有限公司 | Dsm-cc protocol-based method and system for downloading object carousel data |
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| CN111405063A (en) * | 2020-04-02 | 2020-07-10 | 海信电子科技（深圳）有限公司 | Data downloading method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106686444B (en) | 2020-02-28 |
| WO2018120999A1 (en) | 2018-07-05 |
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