CN203039818U - Digit television signal transmission safety protection system - Google Patents
Digit television signal transmission safety protection system Download PDFInfo
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- CN203039818U CN203039818U CN 201320034564 CN201320034564U CN203039818U CN 203039818 U CN203039818 U CN 203039818U CN 201320034564 CN201320034564 CN 201320034564 CN 201320034564 U CN201320034564 U CN 201320034564U CN 203039818 U CN203039818 U CN 203039818U
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- digital watermarking
- television signal
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Abstract
The utility model discloses a digit television signal transmission safety protection system, comprising a signal emission terminal, a signal transmission terminal and a signal receiving terminal, wherein the signal emission terminal is provided with a digit watermarking generator, and the signal transmission terminal and the signal receiving terminal are respectively provided with a digit watermarking detector. The digit television signal transmission safety protection system accurately identifies valid signals and invalid signals through a digit television signal source, can realize detection and protection in real time and guarantees digit television signal information safety.
Description
Technical field
The utility model relates to a kind of digital television signal transmission security crime prevention system, belongs to field of information security technology.
Background technology
In recent years, the event of rogue attacks digital TV video frequency network happens occasionally, and in a single day the digital TV video frequency network suffers the attack of illegal vision signal, has brought ill effect for country and society.At present, at the attack of external illegal vision signal, common means are " pinpointing the problems human intervention ".Although the authorities of video network (cable TV station at different levels) also actively take precautions against by existing various possible technological means, often all get half the result with twice the effort, can not accomplish " leading prevention ", more still dependence " people's air defense is ruled by men ".Specifically be to draw at television image to roll captions, remind spectators to find to dial the police emergency number when program is unusual, though the lawless person has been played certain strick precaution and fright effect, but its shortcoming is to dispose accident fully from noting abnormalities, hysteresis quality is strong, leading the processing even dispose the attack accident often, do not caused irredeemable social influence socially yet.
The particularity of digital television signal transmission network has determined to take general network security means take precautions against attack, especially to the interference of digital television signal or distort.The present legitimacy of the discriminator signal that the receiving device of digital cable customers can not be definite, the possibility of being attacked can take place at any time.Legacy video network systematic protection pattern just is adapted at the upstream (broadcast machine room) of video stream carries out, and as shown in Figure 1, in the protection to the middle reaches website in the whole video system and downstream website, can not accomplish comprehensive protection.In addition, present cable TV network (mainly being the city hfc plant) monitoring management is quite to lag behind.Many network operation work such as search of equipment operation situation, TV programme transmission quality, fault point all is manual operation.When this poor efficiency, senior engineer, the maintenance mode of time-consuming obviously do not conform to current work rhythm, and along with the expansion of network function and scale, just more needs informationalized intelligent management.
Whether legal at how to screen digital television signal, according to the characteristics of digital TV video frequency network self, study a kind of safety and protection system based on digital TV contents itself again, just seem particularly important.
Summary of the invention
The utility model is in order to solve the hysteresis quality problem of the safety and protection system that has digital television signal now, a kind of digital television signal transmission security crime prevention system is provided, from the digital television signal source aspect, accurately identify legal signal and illegal signals, can detect in real time, accomplish real-time protection, ensured the information security of digital television signal.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of digital television signal transmission security crime prevention system, comprise signal transmitting terminal, signal transmission ends and reception signal terminal, be provided with the digital watermarking generator at described signal transmitting terminal, be respectively arranged with the digital watermarking detector in described signal transmission ends and reception signal terminal.But add the discernible digital watermarking mark of the invisible system of access customer display end by the digital television signal source aspect, and be respectively arranged with detector for detection of the digital watermarking mark at signal transmission ends and reception signal terminal, legal signal and illegal signals be can accurately identify, real-time detection, protection in real time realized.
Further, described signal transmission ends comprises main line amplifier, branch amplifier, and terminal amplifier, reception signal terminal comprises set-top box, described main line amplifier, branch amplifier, terminal amplifier and set-top box are connected with the digital watermarking detector respectively.
Further again, described digital watermarking detector comprises for receiving and the detecting unit of detection signal, the switch that is connected with detecting unit, and one side is connected with described detecting unit, the trigger element that is connected with switch on the other hand.Detecting unit detects institute and receives the signal that comes and whether have the digital watermarking mark, if having, is judged to be legal signal, and with this signal toward the next stage transmission, otherwise trigger element is pre-stored in pad data in the amplifier with triggering, by switch switching broadcast.
Further again, described digital watermarking detector also comprises the wireless signal transmission unit that is connected with described trigger element, when detecting unit detects illegal signals, send warning message by the wireless signal transmission unit, receiving terminal can be master control machine room or command centres at different levels etc.
Preferably, invade in order in time to receive illegal signals, and locate illegal signals invasion point fast, be respectively arranged with wireless signal receiving system and locating and displaying device in described signal transmitting terminal, signal transmission ends.
Wherein, described digital watermarking detector is spread spectrum digital watermarking generator and/or LSP digital watermarking generator.
Compared with prior art, advantage of the present utility model and good effect are: digital television signal transmission security crime prevention system of the present utility model, but the front end in TV broadcasting agency adds the discernible digital watermarking mark of invisible system, each website arranges checkout equipment respectively in system, subscriber computer top box until each family, extract the digital watermarking mark step by step, and make identifying information, in case the digital watermarking mark is destroyed, just take shielding measure in real time, and report to the police, really accomplish comprehensive protection of whole system.Realize that whole digital visual frequency network does not have the blind spot safety detection, by the locating and displaying device is set, the accurate band of position of location accident network in real time.By switch is set, can work as digital television signal when being subjected to rogue attacks, switch the pad content that prestores in the output amplifier flexibly, be unlikely to influence watching of user.
After reading the detailed description of the utility model execution mode by reference to the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is existing digital television signal safety and protection system controlling party block diagram;
Fig. 2 is a kind of block diagram of the digital television signal transmission security crime prevention system that proposes of the utility model;
Fig. 3 is the partial structurtes block diagram among Fig. 2;
Fig. 4 is the partial structurtes block diagram among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.
Embodiment one, referring to shown in Figure 2, the digital television signal transmission security crime prevention system of present embodiment, comprise signal transmitting terminal 1, signal transmission ends 2 and reception signal terminal 3, be provided with digital watermarking generator 4 at signal transmitting terminal 1, be respectively arranged with digital watermarking detector 5 in signal transmission ends 2 and reception signal terminal 3.The digital watermarking that digital watermarking generator 3 is used systematic protection embeds vision signal, and all vision signals all have the peculiar digital watermarking of TV station in the user family since then.By being respectively arranged with digital watermarking detector 5 in signal transmission ends 2 and reception signal terminal 3, can accurately identify legal signal and illegal signals, realized real-time detection, protection in real time.The imperceptible digital watermarking of user's HVS, it is transparent to the user.
Referring to shown in Figure 3, described signal transmission ends 2 comprises main line amplifier, branch amplifier, and terminal amplifier, reception signal terminal comprises set-top box, described main line amplifier, branch amplifier, terminal amplifier and set-top box are connected with the digital watermarking detector respectively, whether contain the digital watermarking mark for detection of the digital television signal that receives.
Concrete referring to shown in Figure 4, described digital watermarking detector 5 comprises detecting unit, switch, and trigger element, wherein, detecting unit is used for receiving and detects TV signal whether the digital watermarking mark is arranged, switch is connected with detecting unit, if contain the digital watermarking mark in the TV signal, also be that signal is legal, TV signal exports the next stage amplifier to or plays to reception signal terminal through switch, and trigger element is connected with detecting unit on the one hand, and one side is connected with switch in addition, in TV signal, do not contain the digital watermarking mark, also be signal when illegal, trigger the pad data that is pre-stored in the amplifier by trigger element, and switch output by switch.Therefore, when the TV signal network was subjected to rogue attacks, concerning the user who is attacked regional downstream, the TV signal that receives was illegal signal to attack no longer just, but the pad content of TV station.Certainly, the content of pad can be very abundant, can comprise the slogan of policy, can be recreational program, more can be TV play etc.
In case TV signal is invaded, for can Realtime Alerts, the digital watermarking detector also comprises the wireless signal transmission unit that is connected with trigger element, when detecting unit detects illegal signals, send warning message by the wireless signal transmission unit, receiving terminal can be master control machine room or command centres at different levels etc., and the wireless signal transmission unit can adopt device realizations such as wireless launcher.
Invade in order in time to receive illegal signals, and locate illegal signals invasion point fast, be respectively arranged with wireless signal receiving system and locating and displaying device in described signal transmitting terminal, signal transmission ends.The command and control center is by the citywide network profile, and accurately the seat offence zone in time notifies wired work station very first time of relevant compass of competency to rush to repair, and the processing after doing good and analysis.Such scheme has important practice significance: the one, and the pattern of grading control is convenient to accurate location; The 2nd, zero time delay, attack protection in real time; The 3rd, the user has been realized transparent shielding, prevented the attack accident in advance.
Wherein, described digital watermarking detector is spread spectrum digital watermarking generator and/or LSP digital watermarking generator.Spread spectrum digital watermarking generator is the same with the effect of LSP digital watermarking generator, and effect is to add digital watermarking to the signal source video, can use wherein any, also can adopt simultaneously in two ways.。
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection range of the present utility model.
Claims (6)
1. digital television signal transmission security crime prevention system, comprise signal transmitting terminal, signal transmission ends and reception signal terminal, it is characterized in that: be provided with the digital watermarking generator at described signal transmitting terminal, be respectively arranged with the digital watermarking detector in described signal transmission ends and reception signal terminal.
2. digital television signal transmission security crime prevention system according to claim 1, it is characterized in that: described signal transmission ends comprises main line amplifier, branch amplifier, and terminal amplifier, reception signal terminal comprises set-top box, and described main line amplifier, branch amplifier, terminal amplifier and set-top box are connected with the digital watermarking detector respectively.
3. digital television signal transmission security crime prevention system according to claim 2, it is characterized in that: described digital watermarking detector comprises for the detecting unit that receives signal, the switch that is connected with detecting unit, and be connected on the one hand the trigger element that is connected with switch on the other hand with described detecting unit.
4. digital television signal transmission security crime prevention system according to claim 2, it is characterized in that: described digital watermarking detector also comprises the wireless signal transmission unit that is connected with described trigger element.
5. according to the described digital television signal transmission security of each claim of claim 1-4 crime prevention system, it is characterized in that: be respectively arranged with wireless signal receiving system and locating and displaying device in described signal transmitting terminal, signal transmission ends.
6. according to the described digital television signal transmission security of each claim of claim 1-4 crime prevention system, it is characterized in that: described digital watermarking detector is spread spectrum digital watermarking generator and/or LSP digital watermarking generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034564 CN203039818U (en) | 2013-01-23 | 2013-01-23 | Digit television signal transmission safety protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034564 CN203039818U (en) | 2013-01-23 | 2013-01-23 | Digit television signal transmission safety protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039818U true CN203039818U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034564 Expired - Fee Related CN203039818U (en) | 2013-01-23 | 2013-01-23 | Digit television signal transmission safety protection system |
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| CN (1) | CN203039818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023237A (en) * | 2014-06-23 | 2014-09-03 | 安徽皖通邮电股份有限公司 | Signal source authenticity identification method for signal transmission tail end |
| CN108476337A (en) * | 2016-02-12 | 2018-08-31 | 纳格拉影像股份有限公司 | The method and apparatus for identifying peripheral equipment from digital content |
-
2013
- 2013-01-23 CN CN 201320034564 patent/CN203039818U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023237A (en) * | 2014-06-23 | 2014-09-03 | 安徽皖通邮电股份有限公司 | Signal source authenticity identification method for signal transmission tail end |
| CN108476337A (en) * | 2016-02-12 | 2018-08-31 | 纳格拉影像股份有限公司 | The method and apparatus for identifying peripheral equipment from digital content |
| CN108476337B (en) * | 2016-02-12 | 2021-03-09 | 纳格拉影像股份有限公司 | Method and apparatus for identifying peripheral devices from digital content |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20140123 |