Turning to video servers, the first thought the issue of how the definition
video server (DVS) such products, video server (DVS) and now the mainstream of
the digital video recorder hard drive, which is DVR, how to distinguish between
ยป A simple way is, DVR system can run stand-alone operation, but also with
network interface, video server (DVS) must be the need for network management
software through the network to operate, use and management.
Video
server applications, compared with DVR applications, a notable characteristic is
its system is based on network architecture, video compression system of
collection, transmission, storage, retrieval, exchange, display, management, and
other functional modules for network, and even its own DVR The system can also
be used as a node. Video Server (DVS) can bring can not bring the local hard
drive, with local hard disk video server (DVS), the security of the video data
to consider a compromise, because the network bandwidth and stability had not
been able to achieve sufficient Safety, there will be some loss of video
information of the possibility of local hard disk storage is a good solution,
the general configuration of the DVR capacity than less, it was also a result
video server (DVS) as the DVR a branch, Starter Edition or DVR, but its
application of the tendentious there are still many differences,
Simple analysis, DVR more consideration guarantee the reliability of
local storage, and the video server (DVS) to consider more network efficiency
and quality of video transmission and communication with the outside of the
system norms, these two modes of sometimes conflict; In addition, DVR can
stand-alone operation and self-contained, and the video server (DVS) and its
system can not be separated to achieve alone, the network video surveillance
system is the front-end equipment, since the system is part of its communication
and control system platform with the agreement The access agreement, to consider
the standard platform vendors, system integrators must be effective operation,
with the DVR this point are quite different; It is worth mentioning that, DVR
sometimes assume video server (DVS) role, DVR or Video Server (DVS), its
function should demand the application varies, generally speaking, in programme
design should be given clearer positioning.
As the Security DVR
occupy the mainstream of application mode, the video server product sales is not
great, enterprise-class security market, video server (DVS) is not temperature
did not fire. With the network in recent years the rise of video surveillance,
in particular with the "Green City" gradual increase in the intensity of the
building, video and application server products began to heat up, people's
concern for the video server level higher and higher, all kinds of Video Server
(DVS) products such as mushroom came emerged indicates that video server (DVS)
application has begun to enter a period of rising.
At present the
mainstream DVR / DVS manufacturers are positioning their equipment suppliers in
the list, even if they have a number of networking solutions, still can not
enter the operating carrier-class platform, which is a traditional telecom
solutions supplier's forces. Video Server (DVS) of the characteristics of the
"global eyes" of the telecommunications platform is fully reflected. At present,
Telecom's "Global Eye" platform of the front-end protocol standards have been
developed to version 2.0 and 3.0 versions are under development, from the
network for video surveillance technology under consideration for the exchange
of video areas, the standard used in the SIP protocol as a platform Master
agreement to facilitate the video positioning, authentication, control,
switching, transmission, accounting, management and other business processes.
Video server product development, we must meet these emerging market needs, or
else will miss. Judging from the current situation, the video server (DVS) is
the main market of carrier-class video surveillance system, enterprise-class
video surveillance applications, video server (DVS) has not yet made significant
breakthroughs, still DVR applications Lord.
Therefore, the video
server (DVS) of development, must be able to comply with the network of video
surveillance and direction of development needs, we must be able to achieve more
than if the stream, the local ATA hard drive storage, heartbeat, DDNS, Web,
UPNP, video encryption security, Carrier-class certification, speaking voice,
frame-rate adaptive, H.264/JPEG, wireless / 3 G applications, alarm handling
(Mail, SMS), the smart identification Function, and so on, and in line with
industry norms and standards, in the video server (DVS) product performance, it
is necessary to guarantee the quality of video images, the network transmission
of low-latency and bandwidth fluctuations of a smooth, stable and reliable
products with a strong ability to customize. The availability of highly
customized ability to meet the specific needs of customers the ability, a
measure of a video server (DVS) products is very important indicators.
From the specific design of the product development perspective,
video server (DVS) products should adopt a higher degree of integration of chip
development, in order to reduce costs and power consumption, enhancing video
server (DVS) product features and performance at the same time, Video Server
(DVS) products to improve the quality of an order of magnitude.
In
addition, we can see that the trend is a video server (DVS) of the tendency of
IP. With the security industry after the wave of digital technology, most of the
video equipment used in almost all digital hard drive recorders, video
surveillance in the whole system, we can see that the camera is still used
analog signal transmission, to bring the whole system of Construction A lot of
inconvenience. From the direction of technology development, the video
surveillance system will toward all-digital, cameras should be used front-end
all-digital processing and transmission technology, this would be a security
industry in a new wave of technology, but because the existing technology
Development, the need for a system upgrade process, single-channel video server
(DVS), a very compact size, can easily figure in a simulated camera monitoring
system and a bridge between the structures, it can simulate the original digital
cameras, IP - . To this end, the days Vision launched a dedicated IP camera
module, a video server (DVS) all the functions, but its size is smaller than a
business card, video server and software interfaces (DVS) series are fully
compatible, you can embed To the traditional analog cameras, can also achieve a
separate plug-ins. This use of the IP modules can be easily rapid installation,
deployment of a network video surveillance system.
To mention that
the video server (DVS) development of another important feature, it will be
intelligent, and intelligent video surveillance can be substantially reduced
monitoring the work load and reduce incidents of all kinds of alarm probability
of omissions and misstatements Therefore, bound with intelligent network video
surveillance boom coming, although not a very mature, the need for a sound
process, but the process of development, no one can stop. Therefore, RISC + DSP
processor-based video server (DVS), more full of vigor and potential, while DSP
and RISC processor chip-in-1, more products have the potential of the superior.
Video Server (DVS) the development is not only a single device
development, but also accompanied by security products and technologies related
to the development of these technologies and products related to the
development, and jointly promote the video server (DVS) of the development
process. We can in a typical network video monitoring system to see, IP Matrix
and decoders, network storage, the digital keyboard and software platform, in
particular, network management software platform, will play a key role, its
importance and Influence will be increasingly prominent. Video Server (DVS) on
behalf of the network video monitoring of the development stage, but the video
server (DVS) is not the end of network video surveillance products, with more
features and higher network integration products, IP network camera, Will be
video server (DVS) development of the next important milestone, IP network
cameras will be highly integrated image acquisition, image processing, video
encoding, intelligence analysis, network transmission and storage, and other
advanced technology to more users into the paste Demand.
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