Network transmission stability and bandwidth impact of delay

In addition to the important front-end surveillance cameras video surveillance system, transmission and storage sectors have also decided to monitor the quality is good or bad. Especially the Internet age, if you want to achieve high-definition monitor results Apart from the high-end network surveillance cameras, video transmission and back-end storage, display must also be well designed, and how to achieve high quality, no delay effect is monitoring project focused to solve the problem.

Monitoring system, the delay phenomenon is very obvious. Attributed to two aspects of this problem: a network bandwidth monitor can not meet a large number of image transmission bandwidth, so the data will appear the phenomenon of "queue"; in a stored procedure, depending on storage, compression method, there will be different delay, which results in the terminal display and the images captured by a tiny delay phenomenon.

Monitoring system, the delay phenomenon is very obvious. Attributed to two aspects of this problem: a network bandwidth monitor can not meet a large number of image transmission bandwidth, so the data will appear the phenomenon of "queue"; in a stored procedure, depending on storage, compression method, there will be different delay, which results in the terminal display and the images captured by a tiny delay phenomenon.

A network monitoring camera remote monitoring video capture

Return to the above topic, Let us now analyze the transmission and storage of such makes monitoring the emergence of delay, which way to solve the delay problem?

Stability and bandwidth of network transmission

In the network transmission process, it will affect the maximum than the bandwidth of the delay effect. In the analog control system, we have to worry about unnecessary delay in the network monitoring system, as a result of a large amount of image information network of a time is difficult to load. I once calculated that such a value, 1080p, 30 frames / second image signal needed bandwidth = 1920 × 1080 × 16 × 30 = 995.328M approximation 1G; from the current transmission medium, optical fiber transmission to be able to The demand for high-definition picture quality transmission, or bandwidth is too small, it is easy data transfer "queue" or "loss".

2: cloud storage can resolve to monitor the storage delay

In addition, although strong proponent of 3G wireless networks, but to experience the talent to know the stability of the 3G network is still hard to crack, it is difficult to provide a contact network environment, compared to the delay problem should not be 1s, 2s question.

Editorial suggestions: as much as possible to avoid the wireless transmission in the general case of the network conditions, can also choose to select the cable transmission of analog and network mix and match "style, SDI technology not only provides a digital signal, the image is not the codec direct upload compression, lossless data transmission transmission without delay, to achieve full HD presentation; available coaxial cable to complete the process of short-range transmission

Cloud storage can solve the storage delay

In the present investigation, the storage delay often occurs in the large amount of data stored procedure. Especially high-definition monitor or safe city to monitor the image of storage, the storage device is a great test. In addition to fast read into equipment, but also need to have a strong output capability to protect the high image quality, fast output to a great extent.

Part of the stored data stored in the cloud storage site away from the server, these data collectively referred to as "sensitive" data, they delay the impact of smaller, but will still be in the subsequent transmission distance of the network bandwidth and server . Clearly in the cloud storage monitoring storage data is still not practical and cloud storage.

In the data delay, the general standard rated within 400ms or 300ms, but from the current market, part of the transmission delay is also very common in about 1s. When long-distance, network bandwidth, storage delay of lethal injury, do not know the next technology will be appear.