CN106851338B - A kind of safe transmission method and system of multimedia broadcasting video - Google Patents
A kind of safe transmission method and system of multimedia broadcasting video Download PDFInfo
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- CN106851338B CN106851338B CN201611262080.3A CN201611262080A CN106851338B CN 106851338 B CN106851338 B CN 106851338B CN 201611262080 A CN201611262080 A CN 201611262080A CN 106851338 B CN106851338 B CN 106851338B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 2
- 230000009191 jumping Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- 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
- H04N21/21—Server components or server architectures
- H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- 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
- H04N21/61—Network physical structure; Signal processing
-
- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides a kind of safe transmission method of multimedia broadcasting video and system, the safe transmission method includes: to judge whether gateway is in the signal coverage areas of MBMS service device；The multimedia broadcasting video is cut into N number of video frame section by the MBMS service device；By the last one video frame of n-th video frame section and decryption file association, encrypted video file is formed, and be sent to the gateway；The gateway demodulates file according to the demodulation method with the MBMS service device, and is transmitted to the terminal device；After file is decrypted in the terminal device, the multimedia broadcasting video is played.The present invention can be effectively reduced the cost of terminal device; video-encryption has effectively been carried out in data transmission procedure simultaneously; to prevent receive video by rogue attacks, distort, download and piracy etc., effective protection has been carried out to the transmission of mobile multimedia broadcasting video, has realized safe transmission.
Description
Technical field
The present invention relates to safety communication technology field, in particular to the safe transmission method of a kind of multimedia broadcasting video and
System.
Background technique
With the popularization and application of China Mobile's multimedia broadcasting technology, the majority of consumers can by mobile phone, PDA, MP3,
The multiple terminals equipment such as MP4, computer watches number using " air-ground " the one covering of S-band satellite-signal realization, whole nation roaming
TV listens to digital broadcasting.
Mobile multimedia broadcasting (CMMB) be by using digital coding, by wireless transmission, mobile received mode into
The propagation of row TV programme.Mobile multimedia broadcasting supports mobile reception, in signal coverage areas, can pass through such as hand
The terminal devices such as machine, MP4 player, GPS receive the TV programme such as news, information, amusement whenever and wherever possible, to meet different user
Various demands.
In actual use, terminal device is when in use, it is necessary to which installing CMMB modulation chip can just have correctly received
Multimedia service needs to be required to installation CMMB modulation chip in each terminal device if using multiple terminal devices simultaneously,
Equipment cost is increased, in addition, terminal device is when receiving multimedia service, it is necessary to cover in the signal of mobile multimedia broadcasting
It in range, otherwise will be unable to receive, this receives the use of multimedia service by terminal device is seriously limited.For this purpose, existing special
Benefit is application No. is multimedia broadcasting service information transmission method and gateway disclosed in 200810188868.3, and the technology is not only
The defect of CMMB modulation chip must be installed by effectively overcoming terminal device, and terminal device equipment is not necessarily to cover model in CMMB
Multimedia service can effectively be received by wired or wireless network in enclosing, this technique improves transmission existing for CMMB to lack
It falls into, but still there are some problems in the technology, for example, the features such as opening of multimedia service, sharing, dynamic makes
The safety of the network information receives serious threat and interference, there is rogue attacks, distorts, downloads and the safety such as piracy is asked
Topic, although being encrypted in the technology, encryption technology is relatively simple, not can avoid stolen problem, for this purpose, being badly in need of
Develop the safe transmission method and system of a kind of multimedia broadcasting video that transmission is safer.
Summary of the invention
The features such as opening, sharing, dynamic in order to solve existing multimedia service, makes the safety of the network information
Serious threat and interference are received, there is rogue attacks, distorts, download and the safety problems such as piracy, although in the technology
It is encrypted, but encryption technology is relatively simple, not can avoid the problems such as stolen, the present invention provides a kind of multi-media broadcasts
Broadcast the safe transmission method and system of video.
Specific technical solution of the present invention is as follows:
The present invention provides a kind of safe transmission method of multimedia broadcasting video, the safe transmission method includes following
Step:
S1, judge whether gateway is in the signal coverage areas of MBMS service device, if being in the signal
In overlay area, then terminal device is sent to the MBMS service device by the gateway and plays multimedia broadcasting
The request of video；
S2, the MBMS service device cut several video frames in the multimedia broadcasting video according to the period
It is divided into N number of video frame section, wherein N >=1；
S3, by the last one video frame of n-th video frame section and decryption file association, formed encrypted video file, and
The decryption file and the encrypted video file are sent to the gateway simultaneously；
S4, the gateway are according to the demodulation method with the MBMS service device to the decryption file and institute
It states encrypted video file to be demodulated, and is transmitted to the terminal device by Wireless/wired；
After the decryption file and the encrypted video file is decrypted in S5, the terminal device, play described more
Media broadcast video.
Further, in step S1, judge whether gateway is in the signal coverage areas of MBMS service device,
Specific method includes:
S1-1, the gateway are spaced within a preset period of time to the MBMS service device and send heartbeat detection
Packet；
If S1-2, the MBMS service device receive the heartbeat detection packet, the gateway is in
The feedback information of the signal coverage areas is sent to the gateway.
Further, in step S2, several are separately included in each video frame section and is arranged according to play time sequence
The video frame of sequence.
Further, in step S3, the last one video frame of n-th video frame section and decryption file association are formed
Encrypted video file, and the decryption file and the encrypted video file are sent to the gateway simultaneously, specific side
Method includes:
S3-1, the storage decryption file in the MBMS service device, the decryption file include spring decryption frame
With deciphering information corresponding with spring decryption frame, the display picture of the spring decryption frame is equipped with described for inputting
The deciphering input area of deciphering information；
S3-2, the last one video frame of n-th video frame section is associated with spring decryption frame, forms encrypted video text
Part；
S3-3, the encrypted video file and the decryption file are sent to the gateway simultaneously.
Further, in step S3-3, the MBMS service device is through IP unicast transmission mode by the solution ciphertext
Part and the encrypted video file are sent to the gateway, and the IP unicast transmission mode is internet unicast transmission side
Formula.
Further, in step S5, the terminal device solves the decryption file and the encrypted video file
After close, the multimedia broadcasting video is played, method particularly includes:
When S5-1, the broadcasting multimedia broadcasting video, the terminal device bounces in the multimedia broadcasting video
The deciphering information inputted on the display picture of spring decryption frame out；
S5-2, the deciphering information is audited, if information is correct, continues to play the N+1 video frame section, if
Information errors, then video playing position jumps to head, and stops playing.
The present invention also provides a kind of secure transmission system of multimedia broadcasting video, including MBMS service device,
And it the gateway that communicates with the MBMS service device and several is communicated with the gateway by Wireless/wired
The terminal device of news；
The MBMS service device includes memory module and the signal coverage areas that communicates with the memory module
Judgment module, request receiving module, video slicing module, encrypting module, transmission module, wherein
Decryption file is stored in the memory module；The signal coverage areas judgment module is for judging gateway
Whether the signal coverage areas of MBMS service device is in；The request receiving module is logical for receiving the terminal device
It crosses the gateway and sends the request for playing multimedia broadcasting video；The video slicing module is used for institute according to the period
It states several video frames in multimedia broadcasting video and is cut into N number of video frame section, wherein N >=1；The encrypting module is used for the
The last one video frame of N number of video frame section and the decryption file association form encrypted video file；The transmission module is used
In the decryption file and the encrypted video file are sent to the gateway simultaneously；
The gateway includes the information receiving module, message processing module, information sending module to communicate, the letter
Breath receiving module is used to receive the decryption file and the encrypted video file that the transmission module is sent；At the information
Module is managed to be used for according to the demodulation method with the MBMS service device to the decryption file and encrypted video text
Part is demodulated；The information sending module is used to the decryption file after demodulating and the encrypted video file passing through nothing
Line/wire transmission is to the terminal device；
The terminal device includes the deciphering module and playing module to communicate, and the deciphering module is used for the decryption
File and the encrypted video file are decrypted；The playing module be used for the multimedia broadcasting video after decryption into
Row plays.
Further, the signal coverage areas judgment module includes heartbeat packet transmission unit, the feedback information to communicate
Receiving unit；
The heartbeat packet transmission unit sends the heart for being spaced within a preset period of time to the MBMS service device
Jump detection packet；The feedback information receiving unit is used to receive at the gateway that the MBMS service device is sent
In the feedback information of the signal coverage areas.
Further, the encrypting module includes the reading unit to communicate with the memory module, associative cell, described
Reading unit is used to read the decryption file in the memory module, and is sent to the associative cell, the association table
It is first to be associated with for the last one video frame of n-th video frame section to be decrypted frame with the spring in the decryption file, it is formed and is added
Close video file.
Further, the deciphering module includes the input unit, judging unit, jump-transfer unit to communicate, the input
Unit is used for the deciphering inputted on the display picture that the multimedia broadcasting video is hit by a bullet the spring decryption frame jumped out
Information；The judging unit is for auditing the deciphering information；If information is correct, the jump-transfer unit is used for will
Video playing position jumps to the N+1 video frame section and continues to play, if information errors, the jump-transfer unit is used for video
Play position jumps to head, and stops playing.
Beneficial effects of the present invention are as follows: compared with prior art, method provided by the invention can make terminal device without
The chip that need to have demodulated signal can obtain mobile multimedia broadcasting video, can be effectively reduced terminal by gateway and set
Standby cost, while video-encryption has effectively been carried out in data transmission procedure, to prevent receive video by rogue attacks, distort,
Downloading and piracy etc., have carried out effective protection to the transmission of mobile multimedia broadcasting video, have realized safe transmission, in addition, should
System design is simple, it is only necessary to demodulation chip be arranged on gateway, while video is arranged on MBMS service device and adds
The safe transmission of mobile multimedia broadcasting video can be realized in secret skill art, and structure design is simple, convenient for multimedia broadcasting video
Effectively transmission and application.
Detailed description of the invention
Fig. 1 is a kind of method flow schematic diagram of the safe transmission method of multimedia broadcasting video described in embodiment 1；
The process signal that Fig. 2 is step S1 in a kind of safe transmission method of multimedia broadcasting video as described in example 2
Figure；
The process signal that Fig. 3 is step S3 in a kind of safe transmission method of multimedia broadcasting video as described in example 2
Figure；
The process signal that Fig. 4 is step S5 in a kind of safe transmission method of multimedia broadcasting video described in embodiment 3
Figure；
Fig. 5 is a kind of structure connection diagram of the secure transmission system of multimedia broadcasting video as described in example 4；
Fig. 6 is a kind of structural block diagram of the secure transmission system of multimedia broadcasting video as described in example 4；
Fig. 7 is signal coverage areas judgement in a kind of secure transmission system of multimedia broadcasting video described in embodiment 5
The structural block diagram of module；
Fig. 8 is the structural frames of encrypting module in a kind of secure transmission system of multimedia broadcasting video described in embodiment 5
Figure；
Fig. 9 is the structural frames of deciphering module in a kind of secure transmission system of multimedia broadcasting video described in embodiment 5
Figure.
Wherein: 1, MBMS service device；101, memory module；102, signal coverage areas judgment module；1021, the heart
Jump packet transmission unit；1022, feedback information receiving unit；103, request receiving module；104, video slicing module；105, it encrypts
Module；1051, reading unit；1052, associative cell；106, transmission module；2, gateway；201, information receiving module；
202, message processing module；203, information sending module；3, terminal device；301, deciphering module；3011, input unit；3012,
Judging unit；3013, jump-transfer unit；302, playing module.
Specific embodiment
Invention is further described in detail with following embodiment with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, the embodiment of the present invention 1 provides a kind of safe transmission method of multimedia broadcasting video, the peace
Full transmission method the following steps are included:
S1, first determine whether gateway 2 is in the signal coverage areas of MBMS service device 1, if being in institute
It states in signal coverage areas, then terminal device 3 is sent to the MBMS service device 1 by the gateway 2 and played
The request of multimedia broadcasting video；
The needs of gateway 2 are arranged in the signal coverage areas of MBMS service device 1, could effectively receive movement
Then multimedia broadcast singal, the gateway 2 pass through wirelessly or non-wirelessly mode for receiving mobile multimedia broadcasting video
Terminal device 3 is issued, terminal device 3 can be not arranged in the signal coverage areas of mobile multimedia broadcasting server 1, can also
To be arranged in its signal coverage areas, as long as can be with 2 communication connection of gateway.
S2, the MBMS service device 1 are according to the period by several video frames in the multimedia broadcasting video
It is cut into N number of video frame section, wherein N >=1；At least there is 1 video frame in each video frame section, can be multiple, each view
Frequency frame all has certain play time sequence, is sequentially unable to entanglement, once entanglement, it is possible to cause video playing chaotic.
S3, by the last one video frame of n-th video frame section and decryption file association, formed encrypted video file, and
The decryption file and the encrypted video file are sent to the gateway 2 simultaneously；File is decrypted with the shape of video frame
Formula is associated with by the last one video frame of n-th video frame section, when the last one view of video playing to n-th video frame section
When frequency frame, that is, the video frame of associated decryption file is played, only could continue to play after the decryption file decryption, if the solution
Ciphertext part does not decrypt then video and stops playing, and the encryption to video is effectively played, to form encrypted video file.
Encrypted video file passes through CMMB modulation before being transmitted, can be digital television program video data or number
Broadcast program video data.
S4, the gateway 2 according to the demodulation method with the MBMS service device 1 to the decryption file and
The encrypted video file is demodulated, and is transmitted to the terminal device 3 by Wireless/wired；The multimedia broadcasting view
Frequency is CMMB data, is demodulated by gateway 2 to multimedia broadcasting video, terminal device 3 is sent to after demodulation, is demodulated
Operation can pass through in gateway 2 install CMMB demodulation chip complete.
The mode of wireless transmission can be bluetooth, infrared or WIFI mode, and concrete mode can be according to user demand or net
Depending on network actual conditions, infrared mode advantage of lower cost, the cost is relatively high for bluetooth approach, but the transmission rate of data compared with
Fastly, for first two mode, WIFI mode coverage area is maximum, and message transmission rate is most fast, and attachable user is whole
Hold quantity most, but cost highest.
Wired mode can make Ethernet mode.
After the decryption file and the encrypted video file is decrypted in S5, the terminal device 3, play described more
Media broadcast video.
Terminal device 3 needs that the multimedia video after received demodulation is decrypted, and is regarded after decryption processing
Frequency can play, and otherwise can not effectively be played.
Terminal device 3 can be the one of which in mobile phone, PDA, MP3, MP4, digital camera or laptop etc..
The safe transmission method of multimedia broadcasting video provided by the invention can not only pass through gateway 2 while will be more
Media broadcast video is sent to multiple terminal devices 3, and can effectively ensure that the safety of video in transmission process, to video
Effective encryption is carried out.
Embodiment 2
As shown in Fig. 2, the embodiment of the present invention 2 further defines on the basis of embodiment 1, in step S1, judge to take
Whether business gateway 2 is in the signal coverage areas of MBMS service device 1, and specific method includes:
S1-1, the gateway 2 are spaced within a preset period of time to the MBMS service device 1 and send heartbeat inspection
Survey packet；
If S1-2, the MBMS service device 1 receive the heartbeat detection packet, at the gateway 2
The gateway 2 is sent in the feedback information of the signal coverage areas.
Gateway 2 is used as client terminal, constantly heartbeat detection packet is sent to MBMS service device 1, if more matchmakers
Body broadcasting server 1 can receive the heartbeat detection packet, it was demonstrated that its signal cover for being in MBMS service device 1 it
It is interior, if MBMS service device 1 does not receive heartbeat detection packet, prove that the gateway 2 is not located at multimedia broadcasting clothes
It is engaged within the range of signal of device 1, for this purpose, not only can be used to judge the state of gateway 2, Er Qieneng by heartbeat detection packet
It is enough to identify whether it is within the signal cover of MBMS service device 1.
It should be further noted that separately including several according to broadcasting in each video frame section in step S2
The video frame of time sequencing sequence.
As shown in figure 3, further, in step S3, the last one video frame of n-th video frame section and decryption file are closed
Connection forms encrypted video file, and the decryption file and the encrypted video file is sent to the gateway simultaneously
2, specific method includes:
S3-1, the storage decryption file in the MBMS service device 1, the decryption file include spring decryption frame
With deciphering information corresponding with spring decryption frame, the display picture of the spring decryption frame is equipped with described for inputting
The deciphering input area of deciphering information；Spring decryption frame is identical as the ordinary video frame in video frame section, and video frame is drawn
The region for inputting deciphering information is shown on face, the deciphering information input of only terminal device 3 is correct, just can be into
Otherwise row video playing will be unable to play video.
S3-2, the last one video frame of n-th video frame section is associated with spring decryption frame, forms encrypted video text
Part；When being played to the last one video frame of n-th video frame section, automatic jump on spring decryption frame associated with it,
The decryption frame that needs to bounce is decrypted, and otherwise can not play video.
S3-3, the encrypted video file and the decryption file are sent to the gateway 2 simultaneously.Transmission of video
When, encrypted video file reconciliation ciphertext part is only sent to gateway 2 simultaneously, after gateway 2 is demodulated, is needed same
When two files are sent to mobile device, can otherwise decryption of video can not be subjected to video-see.
In the above-mentioned method encrypted to video, the safe transmission of multimedia broadcasting video is effectively ensured, has prevented
Video is stolen during transmission, distorts, and improves the safety of information transmission.
It should be noted that in step S3-3, the MBMS service device 1 is through IP unicast transmission mode by the solution
Ciphertext part and the encrypted video file are sent to the gateway 2, and the IP unicast transmission mode is internet unicast biography
Defeated mode.
Embodiment 3
As shown in figure 4, the embodiment of the present invention 3 is on the basis of embodiment 1, further define in step S5, the end
After the decryption file and the encrypted video file is decrypted in end equipment 3, the multimedia broadcasting video is played, specifically
Method are as follows:
When S5-1, the broadcasting multimedia broadcasting video, the terminal device 3 bounces in the multimedia broadcasting video
The deciphering information inputted on the display picture of spring decryption frame out；
S5-2, the deciphering information is audited, if information is correct, continues to play the N+1 video frame section, if
Information errors, then video playing position jumps to head, and stops playing.
Above-mentioned decryption of video method, terminal device 3 are needed when playing video through the display in the spring decryption frame
Otherwise correct deciphering information is inputted on picture just can easily cause video playing to terminate decryption of video, the operation
The encryption and decryption operation of video is effectively realized, it is easy to use, it is easy to operate, the safety of multimedia video transmission has been effectively ensured
Property.
Embodiment 4
As shown in figure 5, the embodiment of the present invention 4 further provides a kind of secure transmission system of multimedia broadcasting video,
The gateway 2 that communicates including MBMS service device 1 and with the MBMS service device 1 and it is several with it is described
Gateway 2 passes through the Wireless/wired terminal device 3 to communicate；Terminal device 3 can be mobile phone, PDA, MP3, MP4, number
One of which in camera or laptop etc..
As shown in fig. 6, the MBMS service device 1 includes memory module 101 and communicates with the memory module 101
The signal coverage areas judgment module 102 of news, request receiving module 103, video slicing module 104, encrypting module 105, transmission
Module 106, wherein
Decryption file and video file are stored in the memory module 101；The signal coverage areas judgment module 102
For judging whether gateway 2 is in the signal coverage areas of MBMS service device 1, only gateway 2 is in letter
In number overlay area, the transmission of multimedia video just can guarantee；The request receiving module 103 is for receiving the terminal device
3 send the request for playing multimedia broadcasting video by the gateway 2；The video slicing module 104 be used for according to when
Between section several video frames in the multimedia broadcasting video are cut into N number of video frame section, wherein N >=1；The encrypting module
105 for forming encrypted video file for the last one video frame of n-th video frame section and the decryption file association；Institute
Transmission module 106 is stated to be used for the decryption file and the encrypted video file while being sent to the gateway 2；
The gateway 2 includes information receiving module 201, the message processing module 202, information sending module to communicate
203, the information receiving module 201 is used to receive the decryption file that the transmission module 106 is sent and encryption view
Frequency file；The message processing module 202 is used for according to the demodulation method with the MBMS service device 1 to the decryption
File and the encrypted video file are demodulated, and the message processing module 202 is preferably CMMB demodulation chip；The information
Sending module 203 is used to the decryption file after demodulating and the encrypted video file being transmitted to institute by Wireless/wired
State terminal device 3；
The terminal device 3 includes the deciphering module 301 and playing module 302 to communicate, and the deciphering module 301 is used for
The decryption file and the encrypted video file are decrypted；The playing module 302 is used for described more after decryption
Media broadcast video plays out.
Not only structure design is simple for the secure transmission system of multimedia broadcasting video provided by the invention, but also is by this
System can guarantee the safety of transmission of video not only by realizing the transmission of multimedia video, improve video data biography
Defeated and management efficiency, to make terminal device 3 more efficiently receive mobile multimedia broadcasting video, in addition, gateway 2
Structure improve, effectively reduce the cost of terminal device 3.
Such as there are 5 computers in a students' dormitory, without being equipped with mobile multimedia demodulation chip in each computer,
And 5 computers are not necessarily to be within the signal covering of mobile multimedia broadcasting server 1, as long as 5 computer network connections
Gateway 2 be within the signal cover of MBMS service device 1, and only need to be in gateway 2
CMMB demodulation chip is set, for this purpose, old of terminal device 3 is effectively saved, as the terminal that gateway 2 accesses is set
Standby 3 quantity are more, and effect is more obvious.
Embodiment 5
As shown in fig. 7, the embodiment of the present invention 5 further defines the signal coverage areas on the basis of embodiment 4
Judgment module 102 includes heartbeat packet transmission unit 1021, the feedback information receiving unit 1022 to communicate；
The heartbeat packet transmission unit 1021 is sent out for being spaced within a preset period of time to the MBMS service device 1
Send heartbeat detection packet；The feedback information receiving unit 1022 is used to receive the described of the transmission of MBMS service device 1
Gateway 2 is in the feedback information of the signal coverage areas.
It not only can be used to judge the state of gateway 2 by heartbeat detection packet, but also can be used to whether identify it
Within signal cover in MBMS service device 1.
As shown in figure 8, needing to be explained further, the encrypting module 105 includes communicating with the memory module 101
The reading unit 1051 of news, associative cell 1052, the reading unit 1051 are described in the memory module 101 for reading
Decrypt file, and be sent to the associative cell 1052, the associative cell 1052 be used for by n-th video frame section last
A video frame is associated with the spring decryption frame in the decryption file, forms encrypted video file.
Encrypting module 105 effectively realizes the spring decryption frame of association decryption file in video frame section, effectively realizes view
The encryption of frequency improves the safety in transmission of video.
As shown in figure 9, it should be further noted that the deciphering module 301 include communicate input unit 3011,
Judging unit 3012, jump-transfer unit 3013, the input unit 3011 are used to be hit by a bullet in the multimedia broadcasting video and jump out
The deciphering information inputted on the display picture of the spring decryption frame；The judging unit 3012 is used to believe the deciphering
Breath is audited；If information is correct, the jump-transfer unit 3013 is used to video playing position jumping to the N+1 video frame
Duan Jixu is played, if information errors, the jump-transfer unit 3013 is used to jump to video playing position head, and stops broadcasting
It puts.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (8)
1. a kind of safe transmission method of multimedia broadcasting video, which is characterized in that the safe transmission method includes following step
It is rapid:
S1, judge whether gateway (2) is in the signal coverage areas of MBMS service device (1), if being in the letter
In number overlay area, then terminal device (3) is broadcast by the gateway (2) Xiang Suoshu MBMS service device (1) transmission
Put the request of multimedia broadcasting video；
S2, the MBMS service device (1) cut several video frames in the multimedia broadcasting video according to the period
It is divided into N number of video frame section, wherein N >=1；
S3, by the last one video frame of n-th video frame section and decryption file association, form encrypted video file, and by institute
It states decryption file and the encrypted video file while being sent to the gateway (2)；
S4, the gateway (2) according to the demodulation method of the MBMS service device (1) to the decryption file and
The encrypted video file is demodulated, and is transmitted to the terminal device (3) by Wireless/wired；
After the decryption file and the encrypted video file is decrypted in S5, the terminal device (3), more matchmakers are played
Body INVENTIONBroadcast video；
In step S3, specific method includes:
S3-1, the storage decryption file in the MBMS service device (1), the decryption file include spring decryption frame with
The display picture of deciphering information corresponding with spring decryption frame, the spring decryption frame is equipped with for inputting the solution
The deciphering input area of encrypted message；
S3-2, the last one video frame of n-th video frame section is associated with spring decryption frame, forms encrypted video file；
S3-3, the encrypted video file and the decryption file are sent to the gateway (2) simultaneously.
2. the safe transmission method of multimedia broadcasting video as described in claim 1, which is characterized in that in step S1, judgement
Whether gateway (2) is in the signal coverage areas of MBMS service device (1), and specific method includes:
S1-1, the gateway (2) are spaced within a preset period of time to the MBMS service device (1) and send heartbeat inspection
Survey packet；
If S1-2, the MBMS service device (1) receive the heartbeat detection packet, at the gateway (2)
The gateway (2) are sent in the feedback information of the signal coverage areas.
3. the safe transmission method of multimedia broadcasting video as described in claim 1, which is characterized in that in step S2, each
Several video frames to sort according to play time sequence are separately included in the video frame section.
4. the safe transmission method of multimedia broadcasting video as claimed in claim 3, which is characterized in that in step S3-3, institute
It states MBMS service device (1) and the decryption file and the encrypted video file is sent to institute through IP unicast transmission mode
It states gateway (2), the IP unicast transmission mode is internet unicast transmission mode.
5. the safe transmission method of multimedia broadcasting video as claimed in claim 3, which is characterized in that described in step S5
After the decryption file and the encrypted video file is decrypted in terminal device (3), the multimedia broadcasting video is played,
Method particularly includes:
When S5-1, the broadcasting multimedia broadcasting video, the terminal device (3) is hit by a bullet in the multimedia broadcasting video is jumped out
Spring decryption frame display picture on the deciphering information that inputs；
S5-2, the deciphering information is audited, if information is correct, continues to play the N+1 video frame section, if information
Mistake, then video playing position jumps to head, and stops playing.
6. a kind of secure transmission system of multimedia broadcasting video, which is characterized in that including MBMS service device (1) and
The gateway (2) that communicates with the MBMS service device (1) and it is several with the gateway (2) by it is wireless/
Wired terminal device (3) to communicate；
The MBMS service device (1) includes memory module (101) and the signal that communicates with the memory module (101)
Overlay area judgment module (102), request receiving module (103), video slicing module (104), encrypting module (105), transmission
Module (106), wherein
Decryption file is stored in the memory module (101)；The signal coverage areas judgment module (102) is for judging clothes
Whether business gateway (2) is in the signal coverage areas of MBMS service device (1)；The request receiving module (103) is used for
It receives the terminal device (3) and sends the request for playing multimedia broadcasting video by the gateway (2)；The video is cut
Sub-module (104) is used to that several video frames in the multimedia broadcasting video to be cut into N number of video frame section according to the period,
Wherein N >=1；The encrypting module (105) is used to close the last one video frame of n-th video frame section and the decryption file
Connection forms encrypted video file；The transmission module (106) is used for the decryption file and the encrypted video file simultaneously
It is sent to the gateway (2)；
The gateway (2) includes that the information receiving module (201), message processing module (202), information to communicate sends mould
Block (203), the information receiving module (201) are used to receive the decryption file and institute of the transmission module (106) transmission
State encrypted video file；The message processing module (202) is used for according to the demodulation side with the MBMS service device (1)
Method demodulates the decryption file and the encrypted video file；The information sending module (203) will be for after demodulating
The decryption file and the encrypted video file be transmitted to the terminal device (3) by Wireless/wired；
The terminal device (3) includes the deciphering module (301) and playing module (302) to communicate, the deciphering module (301)
For the decryption file and the encrypted video file to be decrypted；After the playing module (302) is used for decryption
The multimedia broadcasting video plays out；
The encrypting module (105) includes the reading unit (1051) to communicate with the memory module (101), associative cell
(1052), the reading unit (1051) is used to read the decryption file in the memory module (101), and is sent to institute
State associative cell (1052), the associative cell (1052) be used for by the last one video frame of n-th video frame section with it is described
The spring decryption frame association in file is decrypted, encrypted video file is formed.
7. the secure transmission system of multimedia broadcasting video as claimed in claim 6, which is characterized in that the signal coverage
Domain judgment module (102) includes the heartbeat packet transmission unit (1021) to communicate, feedback information receiving unit (1022)；
The heartbeat packet transmission unit (1021) is sent out for being spaced within a preset period of time to the MBMS service device (1)
Send heartbeat detection packet；The feedback information receiving unit (1022) is used to receive what the MBMS service device (1) sent
The gateway (2) is in the feedback information of the signal coverage areas.
8. the secure transmission system of multimedia broadcasting video as claimed in claim 6, which is characterized in that the deciphering module
It (301) include the input unit (3011), judging unit (3012), jump-transfer unit (3013) to communicate, the input unit
(3011) decryption for being inputted on the display picture that the multimedia broadcasting video is hit by a bullet the spring decryption frame jumped out
Code information；The judging unit (3012) is for auditing the deciphering information；It is described to jump list if information is correct
First (3013) continue to play for video playing position to be jumped to the N+1 video frame section, described to jump if information errors
Unit (3013) is used to video playing position jumping to head, and stops playing.
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| CN107645500B (en) * | 2017-09-15 | 2021-01-01 | 成都德芯数字科技股份有限公司 | Broadcast data interaction method and device |
| CN111526389B (en) * | 2020-04-29 | 2022-02-15 | 深圳创维－Rgb电子有限公司 | Video playing method, television and storage medium for broadcast broadband hybrid application |
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| CN101155296A (en) * | 2006-09-29 | 2008-04-02 | 中国科学技术大学 | Method for transmitting data |
| CN101247506A (en) * | 2007-02-14 | 2008-08-20 | 中国科学院声学研究所 | File enciphering method and enciphered file structure in digital media broadcasting system |
| CN101771484A (en) * | 2008-12-30 | 2010-07-07 | 华为终端有限公司 | Multimedia broadcasting service information transmission method and gateway equipment |
| CN105187912A (en) * | 2015-07-14 | 2015-12-23 | 中国科学院信息工程研究所 | Ciphertext video player and playing method |
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| US20100293390A1 (en) * | 2005-06-28 | 2010-11-18 | Ogram Mark Ellery | Secure movie download |
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| CN101155296A (en) * | 2006-09-29 | 2008-04-02 | 中国科学技术大学 | Method for transmitting data |
| CN101247506A (en) * | 2007-02-14 | 2008-08-20 | 中国科学院声学研究所 | File enciphering method and enciphered file structure in digital media broadcasting system |
| CN101771484A (en) * | 2008-12-30 | 2010-07-07 | 华为终端有限公司 | Multimedia broadcasting service information transmission method and gateway equipment |
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Denomination of invention: A safe transmission method and system of multimedia broadcast video Effective date of registration: 20210622 Granted publication date: 20190830 Pledgee: Beijing culture science and technology financing Company limited by guarantee Pledgor: CBC CLOUD TECHNOLOGY Co.,Ltd. Registration number: Y2021980005035 |