CN110809138B - Video one-way transmission system based on no feedback light - Google Patents
Video one-way transmission system based on no feedback light Download PDFInfo
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- CN110809138B CN110809138B CN201911133103.4A CN201911133103A CN110809138B CN 110809138 B CN110809138 B CN 110809138B CN 201911133103 A CN201911133103 A CN 201911133103A CN 110809138 B CN110809138 B CN 110809138B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
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Abstract
The invention provides a video unidirectional transmission system based on feedback-free light, relates to the technical field of information security, and mainly solves the technical problem that a security monitoring network is infringed by a security camera to steal audio and video data. The system consists of a non-controllable outer network video monitoring system, a physical optical unidirectional real-time video transmission system and a controllable inner network video monitoring network which are connected in sequence. The non-controllable external network video monitoring system is used for acquiring on-site audio and video data in real time; the controllable intranet video monitoring network is arranged on the background and used for safely storing and analyzing the audio and video data; the physical optical unidirectional real-time video transmission system is deployed between a camera of a non-controllable outer network video monitoring system and a controllable inner network video monitoring network and is used for physically and unidirectionally transmitting the audio and video data to the controllable inner network video monitoring network. The invention can only transmit audio and video data in one direction, can effectively prevent external invasion and efficiently ensure the safety of the data.
Description
Technical Field
The invention relates to the technical field of information security, in particular to a video unidirectional transmission system based on non-feedback light.
Background
Nowadays, video security monitoring networks have been covered in all aspects of our lives, such as in traffic, communities, scenic spots, state agencies, schools, enterprises, malls, and so on. In order to guarantee social stability and personal safety and play a great role in security, a large number of video security monitoring networks are built everywhere, and the social security audio and video information is mainly acquired by deploying monitoring cameras and other devices, then stored in a centralized video storage system and comprehensively analyzed and processed.
However, since the cameras are too scattered, most of the cameras are deployed outdoors or in public places, and data is transmitted back through a wired or wireless network link, real-time safety physical protection cannot be achieved for each camera. Moreover, most monitoring cameras adopt embedded systems, a large number of known and unknown system bugs exist, and the distribution is too dispersed, so that the maintenance difficulty of a video security monitoring network and the cameras is huge, and system upgrading and patch distribution cannot be achieved timely.
In recent years, the attack action on an internal information system through an invading camera frequently occurs, the internal business system is invaded through the camera as a springboard, the DDos attack on the inside is started through the camera, the running of an important network is paralyzed, and the audio and video information of a person is illegally obtained through a monitoring network. The security monitoring network also becomes a disaster area of security intrusion while protecting the security of people.
Therefore, the safety of the security monitoring network is improved, and the security monitoring network is protected from being violated, which is an urgent problem to be solved.
Disclosure of Invention
One of the purposes of the invention is to provide a video unidirectional transmission system based on non-feedback light, and solve the technical problem that the security monitoring network is infringed by a security camera and audio and video data are stolen in the prior art. Advantageous effects can be achieved in preferred embodiments of the present invention, as described in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to a video unidirectional transmission system based on feedback-free light, which comprises:
the non-controllable external network video monitoring system is deployed in a monitoring site and comprises a plurality of cameras for collecting on-site audio and video data in real time;
the controllable intranet video monitoring network is deployed on the background and comprises a video storage system and a video analysis system, and the video storage system and the video analysis system are used for safely storing and analyzing the audio and video data;
and the physical optical unidirectional real-time video transmission system is arranged between a camera of the non-controllable outer network video monitoring system and the controllable inner network video monitoring network and is used for physically and unidirectionally transmitting the audio and video data to the controllable inner network video monitoring network.
Furthermore, the physical optical unidirectional real-time video transmission system is the only physical channel for transmitting audio and video data from the camera of the non-controllable external network video monitoring system to the controllable internal network video monitoring network;
furthermore, the controllable intranet video monitoring network has no physical channel for data transmission to the camera direction of the non-controllable extranet video monitoring system.
Furthermore, the non-controllable external network video monitoring system is based on a preset protocol and is used for unidirectionally reading audio and video data from each camera.
Further, the preset protocol includes: the Onvif protocol and the RTSP protocol.
Further, the non-controllable external network video monitoring system performs data processing on the acquired audio and video data once and sends the processed audio and video data to the physical optical unidirectional real-time video transmission system for data caching.
Further, the primary data processing at least comprises the following steps: protocol analysis, data decoding and data serialization.
Furthermore, the physical optical unidirectional real-time video transmission system performs secondary data processing on the received audio and video data and transmits the processed audio and video data to the controllable intranet video monitoring network through the feedback-free optical unidirectional device.
Further, the secondary data processing at least comprises the following steps: and (4) data coding and data serialization.
Further, the controllable intranet video monitoring network performs data restoration on the received audio and video data and issues the data as streaming media service according to the application requirement of an internal video system.
Further, the data reduction at least comprises the following steps: data decoding, data recombination and audio and video coding.
The video unidirectional transmission system based on the feedback-free light provided by the invention at least has the following beneficial technical effects:
the video unidirectional transmission system based on the feedback-free light is composed of a non-controllable external network video monitoring system, a physical light unidirectional real-time video transmission system and a controllable internal network video monitoring network which are sequentially connected. Audio and video data collected by the non-controllable external network video monitoring system are processed once and transmitted into the physical optical unidirectional real-time video transmission system; the unidirectional transmission device performs secondary processing on the received audio and video data and transmits the processed audio and video data to a controllable intranet video monitoring network in a unidirectional mode; and the controllable intranet video monitoring network decodes the received audio and video data, so that the audio and video data are suitable for use.
The invention utilizes the physical optical unidirectional real-time video transmission system to enable the audio and video data to be input from the outer end and transmitted in the only direction output from the inner end, but not to allow the audio and video data to be transmitted in the opposite direction or in two directions, and the inner end and the outer end adopt uniform coding and decoding, thereby improving the confidentiality and the safety of the audio and video data.
Therefore, when the camera of the non-controllable external network video monitoring system is attacked, an attacker cannot attack the controllable internal network video monitoring network by using the camera and can only transmit the video stream in a single direction. In addition, the invention effectively improves the safety of the process of acquiring the real-time audio and video.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure, 1 is a non-controllable external network video monitoring system, 2 is a physical optical unidirectional real-time video transmission system, and 3 is a controllable internal network video monitoring network.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1, the invention is a video unidirectional transmission system based on feedback-free light, which is composed of a non-controllable external network video monitoring system 1, a physical light unidirectional real-time video transmission system 2 and a controllable internal network video monitoring network 3 which are connected in sequence;
the non-controllable external network video monitoring system 1 is deployed in a monitoring site, comprises a plurality of cameras and is used for collecting audio and video data of the site in real time;
the controllable intranet video monitoring network 3 is deployed on the background, comprises a video storage system and a video analysis system and is used for safely storing and analyzing the audio and video data;
and the physical optical unidirectional real-time video transmission system 2 is arranged between a camera of the non-controllable outer network video monitoring system 1 and the controllable inner network video monitoring network 3 and is used for physically and unidirectionally transmitting the audio and video data to the controllable inner network video monitoring network 3.
The invention unidirectionally transmits the audio and video data in the non-controllable external network video monitoring system 1 to the controllable internal network video monitoring network 3 through the physical optical unidirectional real-time video transmission system 2 without any other transmission mode. Therefore, when the security video monitoring exposed in the external non-controllable external network video monitoring system 1 collects the audio and video data in real time and transmits the audio and video data to the internal controllable internal network video monitoring network 3, the invention can efficiently prevent the invasion behavior of the internal controllable internal network video monitoring network 3 through the camera, and prevent the bad behaviors of stealing the audio and video data, attacking the system and the like in time. In addition, the invention greatly improves the safety of the camera, improves the safety of audio and video data and the transmission process and saves the maintenance cost.
The physical optical unidirectional real-time video transmission system 2 is the only physical channel for transmitting audio and video data from the camera of the non-controllable external network video monitoring system 1 to the controllable internal network video monitoring network 3;
the controllable intranet video monitoring network 3 has no physical channel for data transmission to the camera direction of the non-controllable extranet video monitoring system 1.
The non-controllable external network video monitoring system 1 is used for reading audio and video data from all the cameras in a one-way mode based on a preset protocol. The preset protocol comprises the following steps: the Onvif protocol and the RTSP protocol.
The non-controllable external network video monitoring system 1 performs data processing on the acquired audio and video data once and then sends the processed audio and video data to the physical optical unidirectional real-time video transmission system 2 for data caching. The primary data processing at least comprises the following steps: protocol analysis, data decoding and data serialization.
It should be noted that the non-controllable extranet video monitoring system 1 performs a data processing on the audio and video data acquired by the cameras, that is, the audio and video data in various formats acquired by the various types of cameras are subjected to protocol analysis, data decoding and data serialization to form a media packet. Then, the media packet is sent to the physical optical unidirectional real-time video transmission system 2 for data caching.
The audio-video data is composed of a frame-by-frame picture packet, and is called a media packet. The media packet carries one frame per frame of picture.
And the physical optical unidirectional real-time video transmission system 2 is used for carrying out secondary data processing on the received audio and video data and then transmitting the processed audio and video data to the controllable intranet video monitoring network 3 through a feedback-free optical unidirectional device. The secondary data processing comprises at least the following steps: and (4) data coding and data serialization.
Preferably, the physical optical unidirectional real-time video transmission system 2 adopts a data unidirectional transmission system based on a unidirectional isolation hardware channel, and the patent number is CN 100471107C.
The principle of the physical optical unidirectional real-time video transmission system 2 is based on a feedback-free unidirectional data transmission method based on a single optical fiber structure, and the patent number is CN 101800757B. The method is realized by transmitting the optical signal in a single direction, and a feedback signal is not needed.
It should be noted that, after receiving the media packet, the physical optical unidirectional real-time video transmission system 2 performs secondary data processing on the media packet, that is, performs uniform data coding and data serialization on the media packet, sequentially presses the media information, the media packet information, and information on whether a key frame is present or not into the head of the media packet, so that the media packet becomes encapsulated data, and then unidirectionally transmits the encapsulated data to the controllable intranet video monitoring network 3.
The media information is information of the camera, for example, the address, port, manufacturer, location, etc. of the camera. The media packet information is information of the media packet itself, for example, information such as a sequence number of the media packet.
The physical optical unidirectional real-time video transmission system 2 can isolate the non-controllable external network video monitoring system 1 and the controllable internal network video monitoring network 3 in the interaction of digital audio and video data, so that the audio and video data can only be transmitted from the non-controllable external network video monitoring system 1 to the controllable internal network video monitoring network 3, but not be transmitted in the opposite direction, the confidentiality of the audio and video data exchange technology is improved, and the invasion of others is effectively prevented.
And the controllable intranet video monitoring network 3 carries out data restoration on the received audio and video data and issues the data as streaming media service according to the application requirement of an internal video system. The data reduction at least comprises the following steps: data decoding, data recombination and audio and video coding.
It should be noted that, after receiving the encapsulated data, the controllable intranet video monitoring network 3 sequentially performs data decoding, data reassembly and audio-video encoding on the encapsulated data, that is, the encapsulated data is restored to audio-video data, and then sends the restored audio-video data to the video storage system and the video analysis system, so as to store and analyze the audio-video data.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. A video uni-directional transmission system based on feedback-free light, comprising:
the non-controllable external network video monitoring system is deployed in a monitoring site and comprises a plurality of cameras for collecting on-site audio and video data in real time; carrying out primary data processing on the acquired audio and video data; wherein, the primary data processing at least comprises protocol analysis, data decoding and data serialization;
the system comprises a controllable intranet video monitoring network, a background, a video storage system and a video analysis system, wherein the controllable intranet video monitoring network is used for carrying out data recovery on received audio and video data and simultaneously carrying out safe storage and analysis on the audio and video data; the data restoration at least comprises data decoding, data recombination and audio and video coding;
the physical optical unidirectional real-time video transmission system is deployed between a camera of the non-controllable outer network video monitoring system and a controllable inner network video monitoring network and is used for physically and unidirectionally transmitting the audio and video data to the controllable inner network video monitoring network;
the video monitoring system is a unique physical channel for transmitting audio and video data to a controllable intranet video monitoring network direction by a camera of the non-controllable extranet video monitoring system;
the system is used for carrying out secondary data processing on the received audio and video data and then physically and unidirectionally transmitting the audio and video data to the controllable intranet video monitoring network; wherein, the secondary data processing at least comprises data coding and data serialization;
the controllable intranet video monitoring network has no physical channel for data transmission to the camera of the non-controllable extranet video monitoring system.
2. The system of claim 1,
the non-controllable external network video monitoring system is based on a preset protocol and is used for reading audio and video data from each camera in a one-way mode.
3. The system of claim 2,
the preset protocol comprises the following steps: the Onvif protocol and the RTSP protocol.
4. The system of claim 3,
and the physical optical unidirectional real-time video transmission system carries out secondary data processing on the received audio and video data and then transmits the processed audio and video data to the controllable intranet video monitoring network through the feedback-free optical unidirectional device.
5. The system of claim 4,
the controllable intranet video monitoring network carries out data restoration on the received audio and video data and issues the data as streaming media service according to the application requirement of an internal video system.
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| CN112788299A (en) * | 2021-01-16 | 2021-05-11 | 鸣飞伟业技术有限公司 | Data one-way transmission sharing switching system based on vacuum one-way transmission technology |
| CN115333623A (en) * | 2022-07-25 | 2022-11-11 | 中关村芯海择优科技有限公司 | Unidirectional laser communication method, storage medium, acquisition end, monitoring end and equipment |
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| CN101945116A (en) * | 2010-09-25 | 2011-01-12 | 公安部第三研究所 | Method for exchanging cross-domain video data safely |
| CN103200201A (en) * | 2013-04-18 | 2013-07-10 | 杭州中威电子股份有限公司 | Public-security inner network and special video network isolation system and method |
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| JP2002247644A (en) * | 2001-02-16 | 2002-08-30 | Denso Corp | Data communication system for radio telephone system, the radio telephone system, data communication method and computer program for the radio telephone system |
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| CN102130808A (en) * | 2010-01-15 | 2011-07-20 | 张建华 | Enhanced mixed physical isolation method |
| CN101800757B (en) * | 2010-02-03 | 2012-06-27 | 国家保密科学技术研究所 | No-feedback one-way data transmission method based on single fiber structure |
| CN103338112A (en) * | 2013-07-15 | 2013-10-02 | 中国科学院信息工程研究所 | Data unidirectional lead-in method and system |
| CN105656902B (en) * | 2016-01-15 | 2018-08-14 | 深圳市利谱信息技术有限公司 | A kind of unidirectional transmitting and control system based on optical transport |
| JP6799779B2 (en) * | 2016-10-07 | 2020-12-16 | パナソニックＩｐマネジメント株式会社 | Surveillance video analysis system and surveillance video analysis method |
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| CN1929490A (en) * | 2006-10-17 | 2007-03-14 | 中网信息技术有限公司 | No-feedback one-way transmitted physical isolation method |
| CN101945116A (en) * | 2010-09-25 | 2011-01-12 | 公安部第三研究所 | Method for exchanging cross-domain video data safely |
| CN103200201A (en) * | 2013-04-18 | 2013-07-10 | 杭州中威电子股份有限公司 | Public-security inner network and special video network isolation system and method |
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Address after: Room 308, floor 3, building 1, No. 18, Longqing street, Beijing Economic and Technological Development Zone, Daxing District, Beijing 102600 Patentee after: Guobao Jintai (Beijing) Information Technology Co.,Ltd. Address before: Room 1709, Qingyun garden, Qingyun District, Beijing 100089 Patentee before: Information security technology research center of Beijing Guobao Jintai information Safe Technology Ltd. |
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Effective date of registration: 20220215 Address after: Room 103, room 2008, 20th floor, Qingyun contemporary building, building 9, Mantingfangyuan community, Qingyun Li, Haidian District, Beijing 100080 Patentee after: Institute of National Security Science and Technology Address before: Room 308, floor 3, building 1, No. 18, Longqing street, Beijing Economic and Technological Development Zone, Daxing District, Beijing 102600 Patentee before: Guobao Jintai (Beijing) Information Technology Co.,Ltd. |