2013年7月2日星期二

Five HD IP Camera common problems and solutions

Five HD IP Camera common problems and solutions
In the transmission and storage, systems integrators through cost inputs can be solved; displaying and managing HD manufacturers need to spend some effort to improve the underlying hardware and software;'s effect in improving night vision, investment is relatively small , and it is most likely to be able to allow the user satisfaction improvement solution.
Compared with standard-definition video surveillance, HD IP Camera surveillance advantages are clear, but through two years of marketing, will inevitably encounter the following types of questions:
1, the transmission
HD IP camera 720P or 1080P generally will choose a solution, if you want to achieve the desired image effect, we need 2 ~ 8M network bandwidth, if a system were to have a few hundred points, and that the flow of data across the network will be quite large , and the video stream is a real-time data streams, will continue to cause network-related switching equipment constant pressure, which requires adequate network planning in doing homework.
Solution: As the cable costs have been reduced, the local LAN can add high-performance fiber-optic switches to form high-speed network, Gigabit to the desktop is a very easy thing. With the popularity of broadband networks, especially this year, has just launched the "triple play", the rate of households have reached tens of megabytes to hundreds of megabytes, Copper light eventually brought us cheap high speed internet. For remote for high-definition video transmission is already not too long time.
2, storage
On a question referred to the problem of huge data flows, data aggregation to the center, or if each node is stored on the central inlet pressure of bandwidth and storage capacity is a major challenge.
Solution: currently only IPSAN and invested heavily on the storage medium to do, IPSAN best use of embedded architecture, much less plug boards, high stability, but the drawback is poor compatibility moment, less flexible secondary development . NVR products on the market are mostly based on X86 architecture, which is the server plus array card, install the application software, servers and disk arrays combo, compatibility is better. If you use IPSAN way, you need to use storage media enterprise-class hard drive, so as to play a IPSAN in the data storage speed and security benefits. For some small systems, does not require too long if you save time, while the data security requirements are not too high, can use the market mainstream server to complete the storage function.
3, the display of
Many HD manufacturers just focus on the front-end IP Camera pixels, without a corresponding development of high-definition video decoder, only around a PC screen to watch high-definition images, high-definition images can not be independent in the large displayed on the screen.
Solution: For high-definition screen TV wall, we have developed a high-definition decoder, the front-end transmission over the HD graphics for effective reduction connected to large screen high-definition input interface, high-definition picture perfect to show on the screen above.
4, management
Many manufacturers or according to the traditional definition of thinking to do analog cameras HD network camera, bought ready-made hardware solutions, using the MPEG4 standard algorithms provided by third parties, only provides a network interface for a simple look digitize the back platform as how to camera hardware, and data flow management, as he did those underlying core algorithms and technologies simply can not achieve.
Solution: try to select hardware interfaces with a rich front-end devices, such as alarms, SD card, intercom, audio, 485, etc., in a project scenario Party can request for flexible combinations, no longer need a separate additional customization function. Software should have a variety of access methods, such as WEB, client, a large platform that can provide the SDK can be very flexible, and third-party software for docking. Function modules to complete as much as possible, such as the police, streaming media, storage services, etc., can be directly used in the project.
5, the night side
In the case of day-lit, high-definition is very easy, once applied in low light or night surveillance when needed, HD became powerless it. Since most of the HD IP Cameras using CMOS sensor, which is less sensitive to light, if not with infrared light, in the night is dark, and we monitor most of the time period you want to prevent precisely at night, so will make the high expectations of high-definition video systems became a decoration.
Welcome to the P2P IP Camera manufacturers VStarcam website: http://www.vstarcam.cn for more information.

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