CN109660829B - Method and system for transmitting media between high-density and low-density networks - Google Patents
Method and system for transmitting media between high-density and low-density networks Download PDFInfo
- Publication number
- CN109660829B CN109660829B CN201811577627.8A CN201811577627A CN109660829B CN 109660829 B CN109660829 B CN 109660829B CN 201811577627 A CN201811577627 A CN 201811577627A CN 109660829 B CN109660829 B CN 109660829B
- Authority
- CN
- China
- Prior art keywords
- media
- density network
- low
- density
- related information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
-
- 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
-
- 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
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2541—Rights Management
-
- 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
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
- H04N21/4825—End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
-
- 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
- H04N21/64322—IP
-
- 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
- H04N21/6437—Real-time Transport Protocol [RTP]
-
- 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
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
Abstract
The embodiment of the invention discloses a method and a system for transmitting media between high-density and low-density networks, wherein the method comprises the following steps: the low-density network center acquires a media pushing request; the low-density network center controls the media pushing module to push the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator; the high-density network receives the media data and the media related information sent by the security isolator, and controls the playing or stops playing of the media data according to a media playing control instruction initiated by a user through the media related information. The technical scheme of the embodiment of the invention can reduce the limitation of media stream transmission between high-density and low-density networks.
Description
Technical Field
The embodiment of the invention relates to a network data transmission technology, in particular to a method and a system for transmitting media between high-density and low-density networks.
Background
High Security Network (HSN) and Low Security Network (LSN) have many application scenarios in the prior art, such as IPTV Network and internet, internal monitoring Network and external Network. The high-density network is a network with a higher security level, while the low-density network is a network with a relatively lower security level and a higher openness.
Data transmission between high-density and low-density networks is not peer-to-peer due to differences in network privacy levels. In the prior art, a high-density network can only passively receive data information sent by a low-density network, and the high-density network prohibits sending any network signal to the low-density network.
One data transmission requirement between high-density networks and low-density networks is the media streaming of audio and video. In order to improve the security, in the prior art, two different networks of audio and video can be transmitted by adopting a secondary coding and decoding mode, a decoder (for network decoding of video streams in a low-density network) is deployed in a low-density network and an encoder (for re-encoding) is deployed in a high-density network and connected through an audio and video cable, and the audio and video can be transmitted from the low-density network to the high-density network by adopting the secondary coding and decoding mode. The technical scheme has the disadvantages that high-low-density networks are connected by using audio and video cables, so that certain transmission risk exists; due to the limitation of the number of the audio and video transmission lines, the number of the codec is fixed, and if the number of the audio and video transmission needs to be enlarged, encoder equipment and decoder equipment with corresponding number need to be added.
Disclosure of Invention
The embodiment of the invention provides a method and a system for transmitting media between high-density and low-density networks, which are used for reducing the limitation of transmitting media streams between the high-density and low-density networks.
In a first aspect, an embodiment of the present invention provides a method for media transmission between high-density and low-density networks, including:
the low-density network center acquires a low-density network media push request;
the low-density network center controls the media pushing module to push the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator;
and the high-density network receives the media data and the media related information sent by the security isolator, and controls the playing or stops playing of the media data according to a media playing control instruction initiated by a user through the media related information.
In a second aspect, an embodiment of the present invention provides a media transmission system between high-density and low-density networks, including:
the low-density network center is used for acquiring a low-density network media push request;
the media pushing module is used for being controlled by the low-density network center and pushing the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator;
the security isolator is used for receiving the media data and the media associated information from the media pushing module and sending the media data and the media associated information to the media receiving module;
the media receiving module is used for receiving the media data and the media related information sent by the security isolator, pushing the media related information to a high-density network center and caching the media data;
the high-density network center is used for uploading the media associated information to a media on demand module of a high-density network;
the media on-demand module is used for forwarding a media playing control instruction initiated by a user to the media receiving module through the high-density network center;
the media receiving module is further configured to control a media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control playing or stop playing of the media data.
The embodiment of the invention provides a method and a system for transmitting media between high-density and low-density networks, which do not adopt hardware devices such as coding devices and decoding devices between the high-density and low-density networks in the prior art to realize the transmission of media streams any more, because the capacity expansion cost of the hardware devices is higher, and the operation cost is very high, the expansion of the audio/video transmission quantity is greatly limited. In the embodiment of the invention, on one hand, under the control of the security isolator, the low-density network pushes the media data and the media associated information to the high-density network according to the media pushing request of the low-density network, so that the security of data transmission from the low-density network to the high-density network is improved; on the other hand, after the high-density network receives the media data and the media related information, the user at the high-density network side requests the related media data according to the media related information, and when the transmission quantity of the audio and video media streams needs to be enlarged, the user at the high-density network side can request the related media data according to the media related information by only adding the media data to be pushed and the media related information in the low-density network media pushing request, so that the operation and adjustment are flexible, the capacity expansion cost is low, and the effect of reducing the transmission limitation of the media streams between the high-density network and the low-density network is realized. In the prior art, when a user in a high-density network needs media data of a certain media source in a low-density network, an encoder needs to be added in the low-density network, a corresponding decoder needs to be added in the high-density network, and when the user needs media data of a plurality of media sources in the low-density network, a corresponding number of encoders needs to be added in the low-density network, and a corresponding number of decoders needs to be added in the high-density network.
Drawings
Fig. 1 is a flowchart of a method for media transmission between high-density and low-density networks according to an embodiment of the present invention;
fig. 2 is a flowchart of a media transmission method between high-density and low-density networks according to a second embodiment of the present invention;
fig. 3 is a flowchart of a media transmission method between high-density and low-density networks according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a media transmission system between high-density and low-density networks according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a media transmission method between high-and low-density networks according to an embodiment of the present invention, where this embodiment is applicable to a situation where media stream transmission is performed between the high-and low-density networks, and this method may be executed by a media transmission system between the high-and low-density networks provided by an embodiment of the present invention, and this system may be implemented in a software and/or hardware manner, and may be generally integrated in various general-purpose computer devices, as shown in fig. 1, a media transmission method between the high-and low-density networks of this embodiment specifically includes the following steps:
and step 110, the low-density network center acquires a low-density network media push request.
The low-density network center is used for scheduling data resources in the low-density network according to a low-density network media push request on one side of the low-density network so as to push appointed media stream data to the high-density network; the low-density network media push request is a data push request sent to the low-density network center according to the actual demand of a user, and the information in the low-density network media push request includes, but is not limited to, a device number of a media stream generating the user request, a time interval of generating the media stream, and other data which can be used for marking the characteristics of the media stream.
In this embodiment, a unidirectional transmission mode is adopted between the high-density network and the low-density network, the direction of data interaction between the two networks must be from the low-density network to the high-density network, so as to ensure the security of data on one side of the high-density network, a data interaction event is triggered by a low-density network media push request set according to user requirements, the low-density network center obtains the low-density network media push request, and other parts in the low-density network are controlled to push data to one side of the high-density network according to media stream information related to the request.
In a specific example, in a cell security system, a low-density network is an external network formed by all camera devices of a cell, a high-density network is an internal monitoring network arranged in a cell monitoring room, the internal monitoring network has a higher security level, can receive video resources shot by any camera device in the external network, but cannot send data to the external network, so that the security of the cell monitoring network is ensured.
And step 120, the low-density network center controls the media pushing module to push the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator.
The media pushing module is arranged on one side of the low-density network and used for realizing a media stream data pushing function; the media data refers to media streams required by users, for example, videos or audios acquired on a designated device; the media related information is information related to the media stream and can be used for introducing the media stream, for example, the reason for requesting the media stream and the characteristic data of the media stream can be added to the media related information; the safety isolator is a device for realizing communication between a high-density network and a low-density network, and physically isolates the high-density network from the low-density network, under the control of the safety isolator, the high-density network can only passively receive data information sent by the low-density network, and the high-density network prohibits any network signal from being sent to the low-density network.
In this embodiment, after acquiring the low-density network media push request, the low-density network center controls the media push module to extract and encapsulate the media data to be pushed and the media related information indicated in the low-density network media push request, the media push module sends the media data and the media related information to the security isolator in a specific form, and the security isolator sends the received media data and the media related information to the high-density network side according to the physical characteristics of the security isolator.
The benefits of this arrangement are: because the data transmission between the high-density network and the low-density network is realized through the safety isolator, the data transmission capability of the high-density network and the low-density network is only dependent on network bandwidth and is independent of other physical equipment, and the limitation of hardware equipment to the data transmission capability when a codec and an audio and video line are used for transmitting data between the high-density network and the low-density network in the prior art is reduced.
And step 130, the high-density network receives the media data and the media related information sent by the security isolator, and controls to play or stop playing the media data according to a media playing control instruction initiated by the user through the media related information.
The media playing control instruction is initiated by the user through the media related information and is used for describing the media stream requested by the user and the instruction of the control information of the media stream.
The embodiment of the invention provides a media transmission method between high-density and low-density networks, on one hand, under the control of a safety isolator, the low-density network pushes media data and media associated information to the high-density network according to a media push request of the low-density network, so that the safety of data transmission from the low-density network to the high-density network is improved; on the other hand, after the high-density network receives the media data and the media related information, the user at the high-density network side requests the related media data according to the media related information, and when the transmission quantity of the audio and video media streams needs to be enlarged, the user at the high-density network side can request the related media data according to the media related information by only adding the media data to be pushed and the media related information in the low-density network media pushing request, so that the operation and adjustment are flexible, the capacity expansion cost is low, and the effect of reducing the transmission limitation of the media streams between the high-density network and the low-density network is realized. In the prior art, when a user in a high-density network needs media data of a certain media source in a low-density network, an encoder needs to be added in the low-density network, a corresponding decoder needs to be added in the high-density network, and when the user needs media data of a plurality of media sources in the low-density network, a corresponding number of encoders needs to be added in the low-density network, and a corresponding number of decoders needs to be added in the high-density network.
Optionally, the receiving, by the high-density network, the media data and the media related information sent by the security isolator, and controlling to play or stop playing the media data according to a media playing control instruction initiated by the user through the media related information includes:
the media receiving module pushes the media related information to the high-density network center and caches the media data.
The media receiving module is used for receiving the media data and the media related information sent by the physical isolator on the high-density network side. The high-density network center is a part corresponding to the low-density network center, and schedules other modules on one side of the high-density network, so that a user can view a media stream matched with the sent low-density network media push request.
In the optional technical solution, the media receiving module pushes the media association information to the high-density network center, and brings the media data cache to the local, so that when the user selects the corresponding media data according to the media association information in the subsequent step, the media data can be called from the local cache.
The high-density network center uploads the media associated information to a media on demand module of the high-density network.
The media on-demand module is a module used for displaying media related information to a user and receiving information of selecting specified media data input by the user, typically, the media on-demand module can be on-demand software, communication with the user is achieved through a man-machine interaction interface, the user checks all media related information in a software list, and the user can check the media data which the user wants to order.
The benefits of this arrangement are: even if the low-density network media push request is a push request set by a user according to the requirement of the user, useless or less data in the media data and the media associated information indicated by the low-density network media push request may still exist, at this time, all the media associated information is displayed to the user by using the media on-demand module, the user can select proper data for the second time as a media stream to be viewed preferentially, and the method is more favorable for the user to obtain target data from a high-density network.
In a specific example, a campus intranet is arranged inside a college, belongs to a high-density network, and an external network belongs to a low-density network relative to the campus intranet, so that a video-on-demand platform is provided for students in the campus intranet, the students can order videos according to their preferences, the video-on-demand platform is a media-on-demand module, and the students select their favorite videos for on-demand according to a video list in the video-on-demand platform, that is, media-related information.
The media on-demand module forwards the media playing control instruction initiated by the user to the media receiving module through the high-density network center.
In the optional technical solution, the user sends a media play control instruction through the media-on-demand module, and the media-on-demand module forwards the media play control instruction initiated by the user to the media receiving module through the high-density network center, so as to determine the media stream specified in the media play control instruction and implement corresponding control on the specified media stream.
The media receiving module controls a media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control playing or stop playing of media data.
The media channel is a media stream playing channel between the media receiving module and the media on-demand module, and is opened when a user requests to play the media stream, and closed when the user requests to stop playing the media stream.
The optional technical scheme provides a specific step of realizing media data transmission in an on-demand mode at one side of the high-density network, a media playing control instruction initiated by a user is sent to the media receiving module through the high-density network center through the media on-demand module, and the media receiving module controls playing or stops playing of media data according to the media playing control instruction, so that the media data transmission mode is more flexible, the capacity expansion cost is low, and the effect of reducing the media stream transmission limitation between the high-density network and the low-density network is realized.
Example two
Fig. 2 is a flowchart of a media transmission method between high-density and low-density networks according to a second embodiment of the present invention, which is further detailed based on the first embodiment and provides a specific implementation step of a media push module pushing media data to be pushed and media related information indicated in a media push request of a low-density network to a high-density network under the control of a security isolator. A media transmission method between high-density and low-density networks according to a second embodiment of the present invention is described below with reference to fig. 2, which includes the following steps:
The User Datagram Protocol (UDP) is a simple connectionless-oriented Datagram transport layer Protocol, data to be sent is encapsulated into a UDP message by the UDP Protocol, and then an Internet Protocol (IP) layer interconnecting the UDP message between networks is encapsulated into an IP packet to be sent; real-time Transport Protocol (RTP) is a network Transport Protocol, which specifies the standard packet format for transmitting audio and video over the internet.
In this embodiment, the media push module encapsulates the media data indicated in the low-density network media push request into a UDP datagram, and then the UDP datagram is sent to the security isolator through RTP.
The user-defined transmission protocol is a network transmission protocol defined by a user, and the defined content of the user-defined transmission protocol includes but is not limited to a message format and message sending time.
In this embodiment, the media push module encapsulates the media association information indicated in the low-density network media push request into a UDP datagram, and then the UDP datagram is sent to the security isolator through the custom transport protocol.
The benefits of this arrangement are: the self-defined transmission protocol is used as a network transmission protocol for transmitting the media associated information to the security isolator by the media push module, so that different requirements in the process of transmitting the media associated information can be met, for example, when necessary information which is not contained in the media associated information exists, the message format and the content in the self-defined transmission protocol can be modified, the necessary information is added into the message, a high-density network side can be ensured to identify corresponding media streams according to the necessary information, for example, the media associated information does not need to be transmitted in real time while the media data is transmitted in real time, the transmission time in the self-defined transmission protocol can be modified, the occupation of the media associated information on bandwidth is reduced, and the media data is transmitted more smoothly.
And 240, the high-density network receives the media data and the media related information sent by the security isolator, and controls to play or stop playing the media data according to a media playing control instruction initiated by the user through the media related information.
The technical solution of this embodiment is carefully described on the basis of the previous embodiment, and the UDP is used to encapsulate the media data, send the media data to the security isolator based on RTP, encapsulate the media related information using UDP, and send the media related information to the security isolator based on the customized transmission protocol.
Optionally, the method for media transmission between high-density and low-density networks further includes:
the low-density network center receives a login request sent by a low-density network resource pushing client;
the low-density network center returns a login token after passing the authentication of the low-density network resource pushing client;
correspondingly, the low-density network center acquiring the low-density network media push request comprises the following steps:
the low-density network center receives a low-density network media pushing request initiated by a low-density network resource pushing client, wherein low-density network source equipment is indicated in the low-density network media pushing request, and a media stream generated by the low-density network source equipment is used as media data to be pushed.
The low-density network resource pushing client is a client used for displaying media resources which can be pushed to a high-density network to a user and receiving specified media resources selected by the user, typically, the low-density network resource pushing client can be resource pushing software which realizes communication with the user through a human-computer interaction interface, and the user can check all the media resources which can be pushed to the high-density network in a resource pushing list and select the specified media resources according to requirements. Although the low-density network resource pushing client belongs to one side of the low-density network, the low-density network resource pushing client can be deployed at a far end, for example, the low-density network resource pushing client is arranged in a monitoring room of a cell, so that security personnel can select videos shot by a specified camera through the low-density network resource pushing client conveniently and request the low-density network to send the videos to the high-density network.
In this optional embodiment, when a user has a request for a media stream from a low-density network, first, a login request is sent to a low-density network center through a low-density network resource pushing client, where the login request includes authority authentication information of the user, such as a dedicated user password or password, after the low-density network center receives the login request sent by the low-density network resource pushing client, the login authority of the user is authenticated, after the authentication is passed, a login token is returned, and all currently available low-density network media resources are pushed to the low-density network resource pushing client, the user selects a specified media resource and requests the specified media resource according to the request, and the low-density network resource pushing client sends the low-density network media pushing request to the low-density network center, where a low-density network source device is indicated in the low-density network media pushing request, for example, and the security personnel requests to acquire the video data of the specific position in the cell within a certain period of time, and the low-density network media push request comprises the camera address for generating the video data of the specific position.
In the optional embodiment, the request login and the authentication processing are established between the low-density network center and the low-density network resource pushing client, so that the media resource pushing between the low-density network center and the low-density network resource pushing client and the security of acquiring the low-density network media pushing request are ensured.
Optionally, the media receiving module controls a media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control playing or stop playing of the media data, including:
if the media playing control instruction received by the media receiving module is a playing instruction, a media channel between the media receiving module and the media on-demand module is established, so that media data is transmitted for playing;
if the media playing control instruction received by the media receiving module is a stop instruction, the media channel between the media receiving module and the media on-demand module is closed, so that the playing of the media data is stopped.
In the optional embodiment, the specific operation information in the media playing control instruction is determined, and the media channel between the media receiving module and the media on-demand module is controlled to be established or closed, so that the functions of playing and stopping playing the media data are achieved, and a user can flexibly play media stream data sent to one side of a high-density network.
EXAMPLE III
Fig. 3 is a flowchart of a method for transmitting media between high and low-density networks according to a third embodiment of the present invention, which further illustrates on the basis of the foregoing embodiment, in this embodiment, a specific implementation step is provided in which a media push module pushes media data to be pushed and media related information, which are indicated in a media push request of a low-density network, to a high-density network under the control of a security isolator, and a specific implementation step is provided in which a media receiving module pushes the media related information to a high-density network center, where the following describes, with reference to fig. 3, a method for transmitting media between high and low-density networks according to a third embodiment of the present invention, and includes the following steps:
and step 310, the low-density network center acquires a low-density network media push request.
Step 320, the media pushing module adds the source address and the source port identification of the media data into the message, and pushes the media data to the high-density network through the security isolator; wherein the source address and the source port identification correspond to a low-density network source device.
In this embodiment, the media push module adds the source address and the source port identifier of the low-density network source device that generates the media data to the message, where the specific position of the addition may be in a reserved byte of the header of the message or in a preset position of the body of the message, and pushes the message data modified in the self-defined manner to the high-density network through the security isolator.
The benefits of this arrangement are: after receiving the media data and the media association information, the high-density network needs to analyze the media association information, and identifies each media stream according to the analysis result, so that the media stream and the corresponding association information thereof achieve resource mapping, and a user can know the source of the media stream requested by the user, so that a data message sent to the high-density network needs to include a source address and a source port identification of the low-density network source device, and is used for positioning the designated low-density network source device. However, all data sent from the low-density network to the high-density network needs to pass through the security isolator between the high-density network and the low-density network, that is, if a traditional network transmission protocol is still used, the address and the port identification carried in the data obtained by the high-density network are corresponding information of the security isolator, but not the source device of the low-density network, so that the media related information is sent from the low-density network to the high-density network by using the customized network transmission protocol, and the source address and the source port identification corresponding to the source device of the low-density network are added in the message sent by the customized network transmission protocol, so that the high-density network side can obtain the completed media stream data.
Step 330, the media receiving module extracts the source address and the source port identification from the packet, adds the source address and the source port identification to the media related information, pushes the media related information to the high-density network center, and caches the media data.
Correspondingly, after receiving the media data and the media related information sent by the security isolator, the media receiving module extracts a source address and a source port identification corresponding to the low-density network source device from the message, adds the extracted information to the media related information and pushes the media related information to the high-density network center, and meanwhile, the media receiving module caches the received media data.
The benefits of this arrangement are: and adding the source address and the source port identification corresponding to the low-density network source equipment extracted from the message into the media associated information, so that the information in the media associated information and the media stream in the media data reach a complete resource mapping relation, and a user can conveniently and subsequently request the specified media stream.
And step 340, the high-density network center uploads the media associated information to a media on demand module of the high-density network.
Step 350, the media on demand module forwards the media playing control command initiated by the user to the media receiving module through the high-density network center.
Step 360, the media receiving module controls the media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control the playing or stop playing of the media data.
The embodiment of the invention provides a media transmission method between high-density and low-density networks, which adds a source address and a source port identification corresponding to low-density network source equipment in a message in a self-defined network transmission protocol mode, and adds the source address and the source port identification corresponding to the low-density network source equipment to media associated information at one side of the high-density network, thereby ensuring that the information in the media associated information and the media stream in media data reach a complete resource mapping relation and facilitating the subsequent ordering of the specified media stream by a user.
Optionally, after the high-density network center uploads the media association information to the media-on-demand module of the high-density network, the method further includes:
and the media on-demand module extracts the source address and the source port identification from the media associated information and displays the source address and the source port identification to the user so that the user can select to play the media data of the corresponding low-density network source equipment.
In this optional embodiment, the media on-demand module extracts the source address and the source port identifier corresponding to the low-density network source device from the media related information, and displays the source address and the source port identifier to the user, and the user orders the media data of the corresponding low-density network source device, so that the media data viewed by the user can accurately meet the own requirements, and the on-demand efficiency is improved.
Specifically, taking a cell security system as an example to illustrate the technical scheme of the embodiment, a low-density network is an external network formed by all camera devices of a cell, a high-density network is an internal monitoring network arranged in a cell monitoring room, when a security worker receives a notice of calling a real-time video of the northwest gate of the cell, a user password of the security worker is input in a low-density network resource pushing client through a human-computer interaction interface on a console, and a login request is sent to a low-density network center, after the low-density network center receives the login request sent by the low-density network resource pushing client, the login authority of the security worker is authenticated, after the authentication is passed, a login token is returned, all currently available camera video resources are pushed to the low-density network resource pushing client, the security worker selects and requests the camera video resources located at the northwest gate of the cell through the low-density network resource pushing client, the low-density network center obtains the request, controls the media pushing module to analyze the media data and the media related information in the request, packages the media data by adopting UDP, sends the media related information to the security isolator by RTP, packages the media related information by adopting UDP, adds the source address and the source port identification of the camera equipment generating the media data into the reserved byte of the message header sending the media related information, sends the self-defined message data to the security isolator, the security isolator sends the received data to the media receiving module by utilizing the one-way transmission function of the security isolator, the media receiving module extracts the source address and the source port identification corresponding to the camera equipment from the message, adds the source address and the source port identification into the media related information, pushes the current media related information to the high-density network center, and simultaneously caches the received media data, the high-density network center uploads the media related information to a media on-demand module of the high-density network, the media on-demand module extracts a source address and a source port identification corresponding to the camera equipment from the media related information and displays the source address and the source port identification to security personnel, the security personnel on-demand camera video resources of northwest gate of the cell, the media on-demand module forwards a play instruction initiated by the security personnel to a media receiving module through the high-density network center, and the media receiving module establishes a media channel between the media receiving module and the media on-demand module according to the received play instruction, so that the camera video resources of northwest gate of the cell are transmitted for playing.
Example four
Fig. 4 is a schematic structural diagram of a media transmission system between high-density and low-density networks according to a fourth embodiment of the present invention, and as shown in fig. 4, the media transmission system between the high-density and low-density networks includes: the low-density network center 411, the media push module 412, the security isolator 40, the media receiving module 421, the high-density network center 422 and the media on-demand module 423 are connected by network cables, wherein:
the low-density network center 411 is configured to obtain a low-density network media push request;
the media pushing module 412 is configured to be controlled by the low-density network center 411, and push the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator 40;
the security isolator 40 is configured to receive the media data and the media related information from the media push module, and send the media data and the media related information to the media receiving module 421;
the media receiving module 421 is configured to receive the media data and the media related information sent by the security isolator 40, push the media related information to the high-density hub 422, and cache the media data;
the high-density network center 422 is used for uploading the media related information to the media on demand module 423 of the high-density network;
the media on demand module 423 is configured to forward a media playing control instruction initiated by the user to the media receiving module 421 through the high-density hub 422;
the media receiving module 421 is further configured to control a media channel between the media receiving module 421 and the media on demand module 423 according to the received media playing control instruction, so as to control playing or stop playing of the media data.
The low-density network center 411 and the media push module 412 are located on one side of the low-density network, the security isolator 40 is located between the high-density network and the low-density network to physically isolate the high-density network from the low-density network, and the media receiving module 421, the high-density network center 422, and the media on-demand module 423 are located on one side of the high-density network.
The embodiment of the invention provides a media transmission system between high-density and low-density networks, wherein a low-density network center controls a media pushing module to push media data and media related information to the high-density network, a media receiving module receives the media data and the media related information, pushes the media related information to the high-density network center and caches the media data, the high-density network center uploads the media related information to a media on-demand module of the high-density network, and the media receiving module controls playing or stops playing of the media data according to a received media playing control instruction forwarded by the media on-demand module.
Optionally, the media pushing module 412 is specifically configured to encapsulate the media data by using a user datagram protocol, and send the encapsulated media data to the security isolator 40 based on a real-time transport protocol; the media related information is encapsulated using a user datagram protocol and sent to the security isolator 40 based on a custom transport protocol.
According to the optional technical scheme, on one hand, accurate sending of the media data and the media associated information is achieved, and on the other hand, the user-defined transmission protocol is used for sending the media associated information, so that the flexibility of the transmission data in content and form is improved.
Optionally, the media pushing module 412 is specifically configured to add the source address and the source port identifier of the media data into the message, and push the message to the high-density network through the security isolator 40; the source address and the source port identification correspond to low-density network source equipment;
the media receiving module 421 is specifically configured to extract a source address and a source port identifier from the packet, add the source address and the source port identifier to the media-related information, and push the media-related information to the high-density hub 422;
the media on demand module 423 is specifically configured to extract the source address and the source port identifier from the media related information, and display the source address and the source port identifier to the user, so that the user can select to play the media data of the corresponding low-density network source device.
The optional technical scheme ensures that the information in the media associated information and the media stream in the media data reach the complete resource mapping relation, so that the media data checked by the user can accurately meet the requirements of the user, and the on-demand efficiency is improved.
Optionally, the security isolator 40 is a single-port unidirectional transmission device.
According to the selectable technical scheme, the safety isolator is single-port one-way transmission equipment, when data transmission is carried out, only one port is used for one-way transmission, on one hand, the single-port transmission device solves the problem that in the prior art, when a plurality of media streams are sent, a plurality of ports are used, and the safety is low, and on the other hand, the one-way transmission device ensures the safety of data on one side of a high-density network.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for media transmission between high-density and low-density networks, comprising:
a low-density network center acquires a low-density network media push request, wherein the low-density network media push request at least comprises a device number for generating a media stream requested by a user and a time interval for generating the media stream;
the low-density network center controls the media pushing module to push the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator;
and the high-density network receives the media data and the media related information sent by the security isolator, and controls the playing or stops playing of the media data according to a media playing control instruction initiated by a user through the media related information.
2. The method according to claim 1, wherein the high-density network receives the media data and the media related information sent by the security isolator, and controls to play or stop playing the media data according to a media playing control instruction initiated by a user through the media related information, including:
the media receiving module pushes the media related information to a high-density network center and caches the media data;
the high-density network center uploads the media associated information to a media on demand module of a high-density network;
the media on-demand module forwards a media playing control instruction initiated by a user to the media receiving module through the high-density network center;
the media receiving module controls a media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control playing or stop playing of media data.
3. The method of claim 2, wherein the media pushing module pushes the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator, and the method comprises:
the media pushing module adds a source address and a source port identification of the media data into a message and pushes the media data to a high-density network through a security isolator; the source address and the source port identification correspond to low-density network source equipment;
correspondingly, the pushing the media related information to the high-density network center by the media receiving module includes:
and the media receiving module extracts a source address and a source port identification from the message, adds the source address and the source port identification into the media related information and pushes the media related information to the high-density network center.
4. The method of claim 3, wherein after the high-density hub uploads the media-related information to a media-on-demand module of a high-density network, the method further comprises:
and the media on-demand module extracts the source address and the source port identification from the media associated information and displays the source address and the source port identification to a user so that the user can select to play the media data of the corresponding low-density network source equipment.
5. The method of claim 1, further comprising:
the low-density network center receives a login request sent by a low-density network resource pushing client;
the low-density network center returns a login token after passing the authentication of the low-density network resource pushing client;
correspondingly, the low-density network center acquiring the low-density network media push request comprises the following steps:
the low-density network center receives a low-density network media pushing request initiated by the low-density network resource pushing client, wherein low-density network source equipment is indicated in the low-density network media pushing request, and a media stream generated by the low-density network source equipment is used as the media data to be pushed.
6. The method of claim 1, wherein the media receiving module controls a media channel between the media receiving module and a media-on-demand module according to the received media playing control instruction, so as to control playing or stop playing of media data, comprising:
if the media playing control instruction received by the media receiving module is a playing instruction, a media channel between the media receiving module and the media on-demand module is established, so that media data is transmitted for playing;
if the media playing control instruction received by the media receiving module is a stop instruction, closing a media channel between the media receiving module and the media on-demand module, thereby stopping the playing of the media data.
7. A system for media transmission between high and low density networks, comprising:
the low-density network center is used for acquiring a low-density network media pushing request, wherein the low-density network media pushing request at least comprises a device number for generating a media stream requested by a user and a time interval for generating the media stream;
the media pushing module is used for being controlled by the low-density network center and pushing the media data to be pushed and the media related information indicated in the low-density network media pushing request to the high-density network under the control of the security isolator;
the security isolator is used for receiving the media data and the media associated information from the media pushing module and sending the media data and the media associated information to the media receiving module;
the media receiving module is used for receiving the media data and the media related information sent by the security isolator, pushing the media related information to a high-density network center and caching the media data;
the high-density network center is used for uploading the media associated information to a media on demand module of a high-density network;
the media on-demand module is used for forwarding a media playing control instruction initiated by a user to the media receiving module through the high-density network center;
the media receiving module is further configured to control a media channel between the media receiving module and the media on-demand module according to the received media playing control instruction, so as to control playing or stop playing of the media data.
8. The system of claim 7, wherein:
the media pushing module is specifically configured to encapsulate the media data by using a user datagram protocol, and send the encapsulated media data to the security isolator based on a real-time transport protocol; and packaging the media associated information by adopting a user datagram protocol, and sending the media associated information to the security isolator based on a user-defined transmission protocol.
9. The system according to claim 7 or 8, characterized in that:
the media pushing module is specifically configured to add a source address and a source port identifier of the media data to a message, and push the message to a high-density network through a security isolator; the source address and the source port identification correspond to low-density network source equipment;
the media receiving module is specifically configured to extract a source address and a source port identifier from the message, add the source address and the source port identifier to the media-related information, and push the media-related information to the high-density hub;
the media on-demand module is specifically configured to extract the source address and the source port identifier from the media-related information, and display the source address and the source port identifier to a user, so that the user can select to play media data of a corresponding low-density network source device.
10. The system of claim 9, wherein: the safety isolator is single-port one-way transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577627.8A CN109660829B (en) | 2018-12-20 | 2018-12-20 | Method and system for transmitting media between high-density and low-density networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577627.8A CN109660829B (en) | 2018-12-20 | 2018-12-20 | Method and system for transmitting media between high-density and low-density networks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109660829A CN109660829A (en) | 2019-04-19 |
| CN109660829B true CN109660829B (en) | 2021-08-17 |
Family
ID=66115916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577627.8A Active CN109660829B (en) | 2018-12-20 | 2018-12-20 | Method and system for transmitting media between high-density and low-density networks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109660829B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168446A (en) * | 2014-06-30 | 2014-11-26 | 国家电网公司 | Audio-video signal digital-analog switching system based on message scheduling and hard decoding |
| CN104363221A (en) * | 2014-11-10 | 2015-02-18 | 青岛微智慧信息有限公司 | Network safety isolation file transmission control method |
| CN104580997A (en) * | 2013-10-12 | 2015-04-29 | 北京航天长峰科技工业集团有限公司 | Video monitoring management system |
| CN104836788A (en) * | 2015-03-18 | 2015-08-12 | 中央电视台 | Information security access control method and device of televised production and broadcasting system |
| US9189637B2 (en) * | 2014-03-17 | 2015-11-17 | Saudi Arabian Oil Company | Systems, methods, and computer medium to securely transfer business transactional data between physically isolated networks having different levels of network protection utilizing barcode technology |
| CN105898434A (en) * | 2014-11-19 | 2016-08-24 | 北京航天长峰科技工业集团有限公司 | Different-security-level network information exchange system |
| CN107295312A (en) * | 2017-08-10 | 2017-10-24 | 上海辰锐信息科技公司 | A kind of wireless video safety access system based on SSL VPN |
-
2018
- 2018-12-20 CN CN201811577627.8A patent/CN109660829B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104580997A (en) * | 2013-10-12 | 2015-04-29 | 北京航天长峰科技工业集团有限公司 | Video monitoring management system |
| US9189637B2 (en) * | 2014-03-17 | 2015-11-17 | Saudi Arabian Oil Company | Systems, methods, and computer medium to securely transfer business transactional data between physically isolated networks having different levels of network protection utilizing barcode technology |
| CN104168446A (en) * | 2014-06-30 | 2014-11-26 | 国家电网公司 | Audio-video signal digital-analog switching system based on message scheduling and hard decoding |
| CN104363221A (en) * | 2014-11-10 | 2015-02-18 | 青岛微智慧信息有限公司 | Network safety isolation file transmission control method |
| CN105898434A (en) * | 2014-11-19 | 2016-08-24 | 北京航天长峰科技工业集团有限公司 | Different-security-level network information exchange system |
| CN104836788A (en) * | 2015-03-18 | 2015-08-12 | 中央电视台 | Information security access control method and device of televised production and broadcasting system |
| CN107295312A (en) * | 2017-08-10 | 2017-10-24 | 上海辰锐信息科技公司 | A kind of wireless video safety access system based on SSL VPN |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109660829A (en) | 2019-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11330332B2 (en) | Systems and methods for transmission of data streams | |
| CN109120946B (en) | Method and device for watching live broadcast | |
| CN109525854B (en) | Live broadcast processing method and device | |
| CN109167960B (en) | Method and system for processing video stream data | |
| KR101647938B1 (en) | Method and System for Providing Media Streaming By Interworking Heterogeneous Network through a Mobile Communication Network | |
| CN110572433B (en) | Video scheduling method, system and device | |
| CN110022295B (en) | Data transmission method and video networking system | |
| CN110769310B (en) | Video processing method and device based on video network | |
| CN109922351B (en) | Method and device for releasing live broadcast service | |
| CN110113558B (en) | Data processing method, device, system and computer readable storage medium | |
| CN110536178B (en) | Live broadcast control method and system | |
| CN108989850B (en) | Video playing control method and control system | |
| CN110392275B (en) | Sharing method and device for manuscript demonstration and video networking soft terminal | |
| CN110519331B (en) | Method and device for processing resources of video network | |
| CN109660829B (en) | Method and system for transmitting media between high-density and low-density networks | |
| CN110392225B (en) | Control method and video networking video conference system | |
| CN108881148B (en) | Data acquisition method and device | |
| CN108989737B (en) | Data playing method and device and electronic equipment | |
| CN110719435B (en) | Method and system for carrying out terminal conference | |
| CN109617858B (en) | Encryption method and device for streaming media link | |
| CN108668111B (en) | Transmission device, system and method for transmitting monitoring information | |
| CN110139059B (en) | Method and device for allocating video networking resources | |
| CN110113565B (en) | Data processing method and intelligent analysis equipment based on video network | |
| CN110769192B (en) | Monitoring recording method and device | |
| US20210352114A1 (en) | Apparatuses, methods, computer programs, and computer program products for flus remote control channels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |