CN108848402A - A kind of data transmission method and equipment - Google Patents
A kind of data transmission method and equipment Download PDFInfo
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- CN108848402A CN108848402A CN201810654980.5A CN201810654980A CN108848402A CN 108848402 A CN108848402 A CN 108848402A CN 201810654980 A CN201810654980 A CN 201810654980A CN 108848402 A CN108848402 A CN 108848402A
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25808—Management of client data
- H04N21/25816—Management of client data involving client authentication
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25866—Management of end-user data
- H04N21/25875—Management of end-user data involving end-user authentication
-
- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- 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
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Graphics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the present invention provides a kind of data transmission method and equipment, is related to field of communication technology.The occurrence of embodiment of the present invention can be improved the Information Security in IPTV, prevent link from stealing.This method includes：User terminal obtains storage location of the content-data in content distributing network CDN equipment；User terminal is obtaining content-data after the storage location in CDN equipment, according to the device identification and storage location of user terminal, generates first resource finger URL URL；First URL is sent to CDN equipment by user terminal；CDN equipment determines the device identification of user terminal according to the first URL after receiving the first URL；CDN equipment verifies the device identification of user terminal；Content-data is sent to the user terminal by CDN equipment after the device identification to user terminal is proved to be successful.The present invention is applied in IPTV system.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of data transmission method and equipment.
Background technique
Currently, in network protocol television (English：Internet Protocol Television, referred to as：IPTV) system
In, it is usually first (English from user terminal to EPG equipment in order to realize broadcasting of the user terminal to content-data：Electronic
Program Guide, TV Guide) send Address requests；After EPG equipment receives Address requests, it can be asked according to address
It asks to CDN (Content Delivery Network, content distributing network) corresponding content-data of device request in CDN
Address, the usually URL of content-data；The URL is back to user terminal again by EPG equipment later；And then user terminal is sharp again
Corresponding content-data, such as video stream data etc. are requested to CDN with the URL received.
In above process, link is stolen, ensures information security in order to prevent, and CDN equipment is receiving user terminal
After request of data, it will usually be verified to the IP address of user terminal, to guarantee the legitimacy of user's access.But invention human hair
Existing, in some cases, IP address corresponding to different user terminals may be the same.Such as multiple users in local area network are whole
End, externally uses the same IP address, then not can avoid user terminal in same local area network already at this time carries out link
The case where stealing.
Summary of the invention
The present invention provides a kind of data transmission method and equipment, can be improved the Information Security in IPTV, prevents link
The occurrence of stealing.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, the present invention provides a kind of data transmission method, which is characterized in that method includes：User terminal obtains
Storage location of the content-data in content distributing network CDN equipment；User terminal is obtaining content-data in CDN equipment
After storage location, according to the device identification and storage location of user terminal, first resource finger URL URL is generated；User terminal
First URL is sent to CDN equipment；CDN equipment is after receiving the first URL, the equipment that determines user terminal according to the first URL
Mark；CDN equipment verifies the device identification of user terminal；CDN equipment to user terminal device identification verifying at
After function, content-data is sent to the user terminal.
Optionally, user terminal obtains storage location of the content-data in content distributing network CDN equipment, specific to wrap
It includes：User terminal sends program acquisition request to electronic program guide (EPG) equipment；User terminal receives the interior of EPG equipment transmission
Hold storage location of the data in CDN equipment.
Optionally, user terminal receives storage location of the content-data of EPG equipment transmission in CDN equipment, specific to wrap
It includes：User terminal receives the 2nd URL that EPG equipment is sent, storage location of the 2nd URL corresponding content data in CDN equipment；
According to the device identification and storage location of user terminal, the first URL is generated, including：Using predetermined encryption algorithm, according to user
The device identification of terminal generates encrypted fields；Encrypted fields are increased in the 2nd URL, to generate the first URL.
Optionally, CDN equipment verifies the device identification of user terminal, specifically includes：CDN equipment is according to user's end
The device identification at end, judges whether user terminal has the permission of access content-data；CDN equipment, will be interior after being proved to be successful
Hold data to be sent to the user terminal, specifically include：After the permission that CDN equipment determines that user terminal has access content-data,
Content-data is sent to the user terminal.
Second aspect, the embodiment of the present invention provide a kind of user terminal, including：Acquiring unit, for obtaining content-data
Storage location in content distributing network CDN equipment；Generation unit is set for obtaining content-data in acquiring unit in CDN
After storage location in standby, according to the device identification and storage location of user terminal, first resource finger URL URL is generated；Hair
Unit is sent, for the first URL to be sent to CDN equipment, so that CDN equipment is after receiving the first URL, according to the first URL
It determines the device identification of user terminal, and the device identification of user terminal is verified, after being proved to be successful, by content-data
It is sent to the user terminal.
Optionally, acquiring unit is specifically used for sending program acquisition request to electronic program guide (EPG) equipment, and receives
Storage location of the content-data that EPG equipment is sent in CDN equipment.
Optionally, acquiring unit, the 2nd URL sent specifically for receiving EPG equipment, the 2nd URL corresponding content data
Storage location in CDN equipment；Generation unit is specifically used for utilizing predetermined encryption algorithm, according to the equipment mark of user terminal
Know, generates encrypted fields；Encrypted fields are increased in the 2nd URL, to generate the first URL.
The third aspect, the embodiment of the present invention provide a kind of content distributing network CDN equipment, including：Receiving unit, for connecing
Receive the first URL；Processing unit, the equipment for determining user terminal according to the first URL after receiving unit receives the first URL
Mark；Processing unit is also used to verify the device identification of user terminal；Transmission unit, for user terminal
After device identification is proved to be successful, content-data is sent to the user terminal.
Optionally, processing unit judges whether user terminal has visit specifically for the device identification according to user terminal
Ask the permission of content-data；Transmission unit, specifically for determining that user terminal has the power of access content-data in processing unit
After limit, content-data is sent to the user terminal.
Fourth aspect, a kind of network protocol television IPTV system of the embodiment of the present invention, including：TV Guide EPG is set
The standby, user terminal as provided by above-mentioned second aspect and the CDN equipment as provided by the above-mentioned third aspect.
In data transmission method provided by the present invention, by obtaining storage address of the content-data in CDN equipment, root
Resource Locator URL is generated according to user terminal identification and storage address, sends content distributing network CDN equipment for URL, when
After CDN equipment receives the URL, the device identification of user terminal included in the URL is obtained, CDN equipment determines the user
Whether the device identification of terminal meets preset condition, if meeting preset condition, the user terminal is allowed to carry out data access.It is logical
Cross the above method, the embodiment of the present invention can enable CDN equipment root when user terminal is to CDN device request content-data
The identity of user terminal is verified according to the device identification of user terminal, and then the legitimacy of user terminal is verified,
And then realize the effect of door chain, improve the safety of data playback in local area network.
It is above-mentioned second and third, the technology that is solved of user terminal, CDN equipment and IPTV system provided by four aspects asks
Topic and the technical effect realized, reference can be made to the above-mentioned description to data transmission method provided by first aspect, repetition
Place repeats no more.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is a kind of schematic network structure for IPTV system that the embodiment of the present invention provides；
Fig. 2 is a kind of flow diagram of data transmission method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of user terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of CDN equipment provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, the embodiment of the present invention is described.
The embodiment of the present invention is applied in IPTV system, as shown in Figure 1, being a kind of IPTV system provided by the invention
Schematic network structure.It wherein, include TV Guide EPG equipment 101, user terminal 102 and CDN in IPTV system
Equipment 103, specific user terminal 102 can be STB (Set Top Box, digital video switching box).Wherein, user terminal
102 are separately connected EPG equipment 101 and CDN equipment 103 by internet.It needs to obtain content-data in user terminal 102
When broadcasting, user terminal 102 first sends corresponding address request to EPG equipment 101；EPG equipment 101 is receiving address
After solicited message, storage location of the content-data in CDN equipment 103, such as URL are fed back to user terminal 102；And then it uses
Family terminal 102 can utilize in URL to the CDN equipment 103 after receiving the URL of the content-data and request corresponding content
Data can realize broadcasting for content by the player in user terminal 102 after user terminal 102 gets content-data
It puts.
Embodiment one：
Network structure or the network structure similar with above-mentioned IPTV system based on above-mentioned IPTV system, the present invention are real
It applies example and a kind of data transmission method is provided, as shown in Fig. 2, this method includes：
S201, user terminal obtain storage location of the content-data in content distributing network CDN equipment.
Specifically, in one implementation, step S201 may include：
S2011, user terminal send program acquisition request to EPG equipment.
S2012, user terminal receive storage location of the content-data of EPG equipment transmission in CDN equipment.
Illustratively, such as user terminal is after the instruction for receiving playing video file A, that is, passes through internet to EPG
Equipment sends program acquisition request.Then EPG equipment can obtain video file A from CDN equipment and exist according to the content acquisition request
Storage location in CDN equipment, and the storage location is returned into user terminal, wherein storage of the video file A in CDN equipment
Position usually can be the URL of video file A.
Therefore, specifically, step S1012 is specifically included：User terminal receives the 2nd URL that EPG equipment is sent.Wherein,
Storage location of the 2nd URL corresponding content data in CDN equipment.
S202, user terminal are obtaining content-data after the storage location in CDN equipment, according to the equipment of user terminal
The storage location of mark and content-data in CDN equipment, generates the first URL.
Specifically, step S202 may include when user terminal is after receiving two URL that EPG equipment is sent：
S2021, encrypted fields are generated according to the device identification of user terminal using predetermined encryption algorithm.
S2022, encrypted fields are increased in the 2nd URL, to generate the first URL.
Illustratively, with RTSP (Real Time Streaming Protocol, real time streaming transport protocol) demand (telecommunication) service
URL for, if EPG equipment is as follows in the URL format for returning to user terminal："rtsp://host/CMSID/
PhysicalContentID？AuthInfo=authinfovalue&domain=domai nvalue¶meter1=
Value1¶meter2=value2 ", i.e. the 2nd URL.User terminal increases in URL after receiving the 2nd URL
Add a token field, generates a new broadcasting URL："tsp://host/CMSID/PhysicalContentID？
AuthInfo=authinfovalue&domain=domain value&Token=tokenvlaue¶meter1=
Value1¶meter2=value2 ", wherein " Token " field is similar with " Authinfo " door chain information, also using close
The mode of key carries out.
Specifically, the Encryption Algorithm that can define " Token " field is：
Encryption string (key)=AES (IP+STBID+TimeStamp), wherein IP is the IP address of user terminal, and STBID is
The device identification of user terminal, that is, set-top box, TimeStamp are timestamp.
In one embodiment, the key of Token field can using and Authinfo encrypt as key, can also be with
Using other keys, specified key is consulted between user terminal and CDN equipment, with no restrictions to this present invention.
First URL is sent to CDN equipment by S203, user terminal.
S204, CDN equipment verify the device identification of user terminal.
Specifically, CDN equipment, after receiving the first URL, decryption obtains the equipment mark of user terminal from the first URL
Know, and then CDN equipment judges whether user terminal has the permission of access content-data according to the device identification of user terminal.
Illustratively, it is identified by the device identification to user equipment, can determine whether the user equipment has
The content-data is accessed and obtains, such as the permission of video file data.
Content-data is sent to the user terminal by S205, CDN equipment after being proved to be successful.In order to which user terminal is internal
Hold data and the operation such as plays out.
Illustratively, after the permission that CDN equipment determines that user terminal has access content-data, content-data is sent
To user terminal.
In data transmission method provided by the present invention, by obtaining storage address of the content-data in CDN equipment, root
Resource Locator URL is generated according to subscriber terminal equipment mark and storage address, sends content distributing network CDN equipment for URL,
After CDN equipment receives the URL, the device identification of user terminal included in the URL is obtained, CDN equipment determines the use
Whether the device identification of family terminal meets preset condition, if meeting preset condition, the user terminal is allowed to carry out data access.
By the above method, the embodiment of the present invention can enable CDN equipment when user terminal is to CDN device request content-data
It is verified according to identity of the device identification of user terminal to user terminal, and then the legitimacy of user terminal is tested
Card, and then realize the effect of door chain, improve the safety of data playback in local area network.
Embodiment two：
Based on above-mentioned data transmission method, the embodiment of the present invention provides a kind of user terminal 30.As shown in figure 3, the user
Terminal 30 includes：Acquiring unit 301, generation unit 302, transmission unit 303, wherein：
Acquiring unit 301, for obtaining storage location of the content-data in content distributing network CDN equipment.
Generation unit 302, for obtaining content-data after the storage location in CDN equipment in acquiring unit 301, according to
The device identification and storage location of user terminal generate first resource finger URL URL；
Transmission unit 303, for the first URL to be sent to CDN equipment, so that CDN equipment is receiving the first URL
Afterwards, the device identification of user terminal is determined according to the first URL, and the device identification of user terminal is verified, verifying at
After function, content-data is sent to the user terminal.
In one implementation, acquiring unit 301 are obtained specifically for sending program to electronic program guide (EPG) equipment
Request is taken, and receives storage location of the content-data of EPG equipment transmission in CDN equipment.
In one implementation, acquiring unit 301, be specifically also used to receive EPG equipment transmission the 2nd URL, second
Storage location of the URL corresponding content data in CDN equipment；
Generation unit 302 is specifically used for utilizing predetermined encryption algorithm, according to the device identification of user terminal, generates encryption
Field；Encrypted fields are increased in the 2nd URL, to generate the first URL.
Since user terminal can be applied to implement above method embodiment in the embodiment of the present invention, it can obtain
The technical effect obtained is see also above method embodiment, and details are not described herein for the embodiment of the present invention.
Embodiment three：
Based on above-mentioned data transmission method, the embodiment of the present invention provides a kind of CDN equipment, as shown in figure 4, the CDN equipment
40 include：
Receiving unit 401, for receiving the first URL；
Processing unit 402, the equipment for determining user terminal according to the first URL after receiving unit receives the first URL
Mark；
Processing unit 402 is also used to verify the device identification of user terminal；
Transmission unit 403, for after the device identification to user terminal is proved to be successful, content-data to be sent to user
Terminal.
In one implementation, processing unit 402 judge user specifically for the device identification according to user terminal
Whether terminal has the permission of access content-data；
Transmission unit 403, specifically for inciting somebody to action after the permission that processing unit determines that user terminal has access content-data
Content-data is sent to the user terminal.
Since CDN equipment can be applied to implement above method embodiment in the embodiment of the present invention, it can obtain
Technical effect see also above method embodiment, details are not described herein for the embodiment of the present invention.
Example IV：
Based on above-mentioned data transmission method, the embodiment of the present invention provides a kind of network protocol television IPTV system 50, including：
CDN equipment provided by EPG equipment, the user terminal as provided by above-described embodiment two and above-described embodiment three.
The connection structure of each equipment and information transmission process can be found in above-mentioned Fig. 1-4 and above-mentioned in specific IPTV system 50
To the description content of Fig. 1-4.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
In addition, above-mentioned integrated module both can take the form of hardware realization, it can also be using software function module
Form is realized.It should be noted that being schematical, only a kind of logic function to the division of module in the embodiment of the present invention
It divides, there may be another division manner in actual implementation.For example, each functional module of each function division can be corresponded to, it can also
Two or more functions to be integrated in a processing module.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of data transmission method, which is characterized in that the method includes：
User terminal obtains storage location of the content-data in content distributing network CDN equipment, and the content-data is described
Data of the user terminal to the CDN device request；
The user terminal is obtaining the content-data after the storage location in the CDN equipment, whole according to the user
The device identification at end and the storage location generate first resource finger URL URL；
First URL is sent to the CDN equipment by the user terminal；
The CDN equipment determines the equipment mark of the user terminal according to the first URL after receiving the first URL
Know；
The CDN equipment verifies the device identification of the user terminal；
The content-data is sent to described by the CDN equipment after the device identification to the user terminal is proved to be successful
User terminal.
2. data transmission method according to claim 1, which is characterized in that the user terminal obtains including content-data
Storage location in content distributing network CDN equipment, specifically includes：
The user terminal sends program acquisition request to electronic program guide (EPG) equipment；
The user terminal receives storage location of the content-data of the EPG equipment transmission in CDN equipment.
3. data transmission method according to claim 2, which is characterized in that
The user terminal receives storage location of the content-data of the EPG equipment transmission in CDN equipment, specific to wrap
It includes：
The user terminal receives the 2nd URL that the EPG equipment is sent, and the 2nd URL corresponds to the content-data in CDN
Storage location in equipment；
The device identification and the storage location according to the user terminal generates the first URL, including：
Encrypted fields are generated according to the device identification of the user terminal using predetermined encryption algorithm；
The encrypted fields are increased in the 2nd URL, to generate the first URL.
4. data transmission method according to claim 1, which is characterized in that the CDN equipment is to the user terminal
Device identification is verified, and is specifically included：
The CDN equipment judges whether the user terminal has access described interior according to the device identification of the user terminal
Hold the permission of data；
The CDN equipment is sent to the user terminal after being proved to be successful, by the content-data, specifically includes：
After the CDN equipment determines that the user terminal has the permission for accessing the content-data, by the content-data
It is sent to the user terminal.
5. a kind of user terminal, which is characterized in that including：
Acquiring unit, for obtaining storage location of the content-data in content distributing network CDN equipment；
Generation unit, for obtaining the content-data after the storage location in the CDN equipment in the acquiring unit, root
According to the device identification and the storage location of the user terminal, first resource finger URL URL is generated；
Transmission unit, for the first URL to be sent to the CDN equipment so that the CDN equipment receive it is described
After first URL, the device identification of the user terminal is determined according to the first URL, and to the equipment mark of the user terminal
Knowledge is verified, and after being proved to be successful, the content-data is sent to the user terminal.
6. user terminal according to claim 5, which is characterized in that including：
The acquiring unit is specifically used for sending program acquisition request to electronic program guide (EPG) equipment, and receives the EPG
Storage location of the content-data that equipment is sent in CDN equipment.
7. user terminal according to claim 6, which is characterized in that
The acquiring unit, is specifically also used to receive the 2nd URL that the EPG equipment is sent, and the 2nd URL is corresponded in described
Hold storage location of the data in CDN equipment；
The generation unit is specifically used for utilizing predetermined encryption algorithm, according to the device identification of the user terminal, generates encryption
Field；The encrypted fields are increased in the 2nd URL, to generate the first URL.
8. a kind of content distributing network CDN equipment, which is characterized in that including：
Receiving unit, for receiving the first URL；
Processing unit, for determining the user terminal according to the first URL after receiving unit receives the first URL
Device identification；
The processing unit is also used to verify the device identification of the user terminal；
Transmission unit, for after the device identification to the user terminal is proved to be successful, the content-data to be sent to institute
State user terminal.
9. CDN equipment according to claim 8, which is characterized in that including：
The processing unit judges whether the user terminal has specifically for the device identification according to the user terminal
Access the permission of the content-data；
The transmission unit, specifically for determining that the user terminal has the permission for accessing the content-data in processing unit
Afterwards, the content-data is sent to the user terminal.
10. a kind of network protocol television IPTV system, which is characterized in that including：TV Guide EPG equipment, such as above-mentioned power
Benefit requires any one of 5-7 user terminal and the CDN equipment as described in the claims 8 or 9 any one.
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| CN201810654980.5A CN108848402A (en) | 2018-06-22 | 2018-06-22 | A kind of data transmission method and equipment |
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| CN201810654980.5A CN108848402A (en) | 2018-06-22 | 2018-06-22 | A kind of data transmission method and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111541758A (en) * | 2020-04-17 | 2020-08-14 | 支付宝(杭州)信息技术有限公司 | Page updating method and device |
| CN112565830A (en) * | 2020-12-03 | 2021-03-26 | 福建大屏网络科技有限公司 | EPG publishing system |
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