About-network-video:
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| Network cameras and network video server technology comparison
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1. Network camera - Introduction
Network camera is the traditional
network cameras and video technology integration of video data transmission
network, the first-generation products, in addition to a traditional camera to
capture images of all the functions, the machine also has built-in digital
compression controller and WEB-based operating system, The video compression
makes data encryption, through the local area network, internet or wireless
network sent to the end user. From the outside structure, the network currently
available in the market for embedded cameras have a lens of the integration
models, this network camera lens is fixed, not-for-another can be a need to be
replaced in accordance with the standard C / CS Lens, the only C-type lens with
a CS-C converters with the installation. However, internal structure, no matter
what kind of model, the network cameras are most of the basic structure of the
lens, filter, image sensors, image processors, compression chip and a network
server connectivity composed . And remote users may own a PC using a standard
Web browser, Internet video camera under its own independent IP addresses, a
visit to the network camera, real-time monitoring of the target site, and
real-time information on the image editing and storage , The majority of network
cameras because of their upgrades, capacity expansion and compatibility of the
reasons for the poor, has been gradually withdraw from the market. To focus on
the performance;
1) can not be configured according to the actual
situation cameras (infrared sensor lights, day and night functionality, etc.);
2) it is very difficult to achieve in the system compatible with other
equipment (hard disk recorders and other equipment);
3) compression
backward, the volume of data (MJPEG, etc.);
4) can not achieve
large-scale system of centralized control and management functions (Centre
management server features), and so on.
2. Network video server -
Introduction
Video video data server is the second-generation network
transmission products. Some ways that the network video server could be regarded
as not to bring the network camera lens, or without a hard drive DVR, its
structure is also largely similar to the network cameras, by one or more analog
video input , The digital image processor, compression chip and a network
connectivity posed by the server, but it's functional and scalable system to
expand capacity and secondary development of compatibility greatly exceeded the
previous generation network video products - the network camera. Network video
server will enter the digital analog video signal processing, digital signal to
the mode of transmission to the network, thus achieving the purpose of remote
real-time monitoring. As video server will simulate the camera successfully
"transformation" for the network camera, it is also network monitoring system
and the current analog CCTV systems to integrate the best way.
In
addition to video network servers and network cameras can achieve the same
functions, the configuration of equipment on more flexible. Network camera lens
itself is usually subject to the restrictions and functions of the fuselage, and
video server in addition to the traditional and ordinary cameras connected, and
also some special features of the camera connected, for example: Minimum
illumination cameras, high sensitivity, such as the infrared camera . At present
the video server market to a road and the main four-way video input, and is on
the network and long-range lens Yuntai control the functions of addition, the
product can also support real-time audio transmission and voice-speaking
function, and some video server Dynamic detection and also after the incident
triggered the alarm function.
Part of the development of strong
domestic enterprises, has been hard drive recorders and video servers and
network embedded DVR integration with the platform for the operation of the use
of a powerful system and network to remote monitoring system in the form of
solutions available to the users, this solution The launch makes network video
server applications have been more in-depth application.
I developed
the iDRS-400x series network video server products already has all the necessary
networking capabilities, and we have been successful application of the system
design and implementation of a number of large enterprises to domestic
institutions, such as: telecommunications in the city-more than 80 Shop Network
remote monitoring system, Tongrentang Pharmaceutical Group of the production
factory and store network remote monitoring system, Guangdong Province,
Guangdong Province, the prison network remote monitoring system, and other
projects.
I company for the development of network monitoring customers
to design a set of distributed network monitoring system solutions --- iDRS
distributed network remote monitoring system. All the core of the system used a
H.264 compression algorithm, so that users of network applications have been
optimized, the system gives users a lot of design and development for control
and management of the control module, allowing users easy management of hundreds
of equipment possible.
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