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In the current video surveillance market, high-definition video surveillance has become the mainstream trend, although high-definition video surveillance is already hot, and several major issues facing high-definition video surveillance also need to be resolved.
In terms of transmission and storage, system integrators can solve the problem through high cost investment; display and management require high-definition manufacturers to spend some energy to improve the underlying software and hardware; and to improve the effectiveness of night vision, the investment is relatively small. Is also the solution that can most easily improve user satisfaction.
Compared with standard definition video surveillance, the advantages of high-definition network monitoring are obvious. However, after more than two years of marketing, the following types of problems will inevitably be encountered:
1, transmission
HD network cameras generally use 720P or 1080P solutions. If you want to achieve the ideal image, you need 2~8M of network bandwidth. If there are hundreds of points in a system, the data flow of the entire network will be quite large. The video stream is a real-time data stream that will continue to cause constant pressure on network-related switching equipment. This requires adequate homework in network planning.
solution:
Since the cost of optical cables is constantly decreasing, local area networks can use optical fibers and high-performance switches to form high-speed networks. Gigabit to the desktop is very easy. With the popularity of broadband networks, especially the "three-in-one" that was just launched this year, the rate of entering homes has reached several tens of megabytes to one hundred megabytes. The ultimate goal for Guangjin Copper Retreat is to bring us low-cost high-speed Internet. For long-distance high-definition video transmission has not taken too long.
2, storage
The last question mentioned the huge problem of data flow. If data is aggregated to the center or each node for storage, the pressure on the center entrance bandwidth and the storage capacity are a big challenge.
solution:
At present, IPSAN and storage media can only be heavily invested. IPSAN preferably adopts an embedded architecture. The number of plug-in boards is much less and the stability is high. However, the disadvantage is that compatibility is poor and secondary development is not very flexible. Most of the NVR products on the market are based on the X86 architecture, that is, servers plus array cards, application software, two-in-one server and disk array, and better compatibility. If you use IPSAN, you need to use enterprise-class hard disks for storage media, so that you can take advantage of IPSAN's speed and security in data storage. For some small and medium-sized systems, if the storage time does not require too long, and the data security requirements are not too high, it is entirely possible to use the mainstream servers in the market to complete the storage functions.
3, display
Many high-definition manufacturers only pay attention to the pixels of the front-end camera, but did not develop corresponding high-definition video decoders, can only watch high-definition images around the PC's screen, can not be independent of the high-definition image on the big screen On the display.
solution:
For the HD video wall, we have developed a high-definition decoder that efficiently restores the high-definition graphics transmitted from the front-end and connects to the high-definition input interface of the large screen. The HD display is perfectly displayed on the screen.
4, management
Many high-definition manufacturers still do high-definition cameras in accordance with the traditional analog cameras, buy ready-made hardware solutions, use third-party MPEG4 standard algorithms, just provide a network interface, a simple digital, as to how the back of the camera on the camera The hardware and data flow management, because they do not have the underlying core algorithms and technologies, simply can not be achieved.
solution:
As far as possible, select front-end devices with rich hardware interfaces, such as alarm, SD card, intercom, audio, 485, etc. In the project plan, you can perform flexible combination according to the requirements of Party A, and no need for additional customization. The software must have multiple access methods, such as WEB, client, and large platform, etc. It can provide SDK development kits that can be interfaced with third-party software very flexibly. Functional modules should be as complete as possible, such as alarms, streaming media, storage services, etc., can be used directly in the project.
5. Nighttime aspects
In the light of daytime, achieving high-definition is very easy. Once the application is in weak light, or when night surveillance is needed, HD will become a hero without any use. Since most high-definition cameras use CMOS sensors, their sensitivity to light is low. If they do not match the infrared light, it will be dark at night, and the period of time that we monitor for most prevention is exactly at night. It will make a high-definition video system with a high expectation become a decoration.
solution:
We have accumulated rich experience in night vision surveillance and provide different solutions based on different field environments. Such as infrared light program, IRCUT technology, low-light chips.
Conclusion:
Behind our passion for high-definition products, we should be more calm to analyze the above five actual problems, how to solve each problem, which is rarely considered by many manufacturers, their concerns are often limited to only one The product itself, as long as the pixel is high, is high-definition, and it is a high-end system solution.
In terms of transmission and storage, system integrators can solve the problem through high cost investment; display and management require high-definition manufacturers to spend some energy to improve the underlying software and hardware; and to improve the effectiveness of night vision, the investment is relatively small. Is also the solution that can most easily improve user satisfaction.
Compared with standard definition video surveillance, the advantages of high-definition network monitoring are obvious. However, after more than two years of marketing, the following types of problems will inevitably be encountered:
1, transmission
HD network cameras generally use 720P or 1080P solutions. If you want to achieve the ideal image, you need 2~8M of network bandwidth. If there are hundreds of points in a system, the data flow of the entire network will be quite large. The video stream is a real-time data stream that will continue to cause constant pressure on network-related switching equipment. This requires adequate homework in network planning.
solution:
Since the cost of optical cables is constantly decreasing, local area networks can use optical fibers and high-performance switches to form high-speed networks. Gigabit to the desktop is very easy. With the popularity of broadband networks, especially the "three-in-one" that was just launched this year, the rate of entering homes has reached several tens of megabytes to one hundred megabytes. The ultimate goal for Guangjin Copper Retreat is to bring us low-cost high-speed Internet. For long-distance high-definition video transmission has not taken too long.
2, storage
The last question mentioned the huge problem of data flow. If data is aggregated to the center or each node for storage, the pressure on the center entrance bandwidth and the storage capacity are a big challenge.
solution:
At present, IPSAN and storage media can only be heavily invested. IPSAN preferably adopts an embedded architecture. The number of plug-in boards is much less and the stability is high. However, the disadvantage is that compatibility is poor and secondary development is not very flexible. Most of the NVR products on the market are based on the X86 architecture, that is, servers plus array cards, application software, two-in-one server and disk array, and better compatibility. If you use IPSAN, you need to use enterprise-class hard disks for storage media, so that you can take advantage of IPSAN's speed and security in data storage. For some small and medium-sized systems, if the storage time does not require too long, and the data security requirements are not too high, it is entirely possible to use the mainstream servers in the market to complete the storage functions.
3, display
Many high-definition manufacturers only pay attention to the pixels of the front-end camera, but did not develop corresponding high-definition video decoders, can only watch high-definition images around the PC's screen, can not be independent of the high-definition image on the big screen On the display.
solution:
For the HD video wall, we have developed a high-definition decoder that efficiently restores the high-definition graphics transmitted from the front-end and connects to the high-definition input interface of the large screen. The HD display is perfectly displayed on the screen.
4, management
Many high-definition manufacturers still do high-definition cameras in accordance with the traditional analog cameras, buy ready-made hardware solutions, use third-party MPEG4 standard algorithms, just provide a network interface, a simple digital, as to how the back of the camera on the camera The hardware and data flow management, because they do not have the underlying core algorithms and technologies, simply can not be achieved.
solution:
As far as possible, select front-end devices with rich hardware interfaces, such as alarm, SD card, intercom, audio, 485, etc. In the project plan, you can perform flexible combination according to the requirements of Party A, and no need for additional customization. The software must have multiple access methods, such as WEB, client, and large platform, etc. It can provide SDK development kits that can be interfaced with third-party software very flexibly. Functional modules should be as complete as possible, such as alarms, streaming media, storage services, etc., can be used directly in the project.
5. Nighttime aspects
In the light of daytime, achieving high-definition is very easy. Once the application is in weak light, or when night surveillance is needed, HD will become a hero without any use. Since most high-definition cameras use CMOS sensors, their sensitivity to light is low. If they do not match the infrared light, it will be dark at night, and the period of time that we monitor for most prevention is exactly at night. It will make a high-definition video system with a high expectation become a decoration.
solution:
We have accumulated rich experience in night vision surveillance and provide different solutions based on different field environments. Such as infrared light program, IRCUT technology, low-light chips.
Conclusion:
Behind our passion for high-definition products, we should be more calm to analyze the above five actual problems, how to solve each problem, which is rarely considered by many manufacturers, their concerns are often limited to only one The product itself, as long as the pixel is high, is high-definition, and it is a high-end system solution.
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