Analysis of common problems in security monitoring Home Furnishing security monitoring?

Install monitoring some of the most common and easy to put together the following

contact problems:
1 high-definition network camera or HD video server
High-definition network camera because is the integration of product structure, simple,

convenient application, has become the theme of the application.
To connect the HD video camera with HD video server, in the current high-definition

network machine is not very rich, is also a good
Choice, will be more choice for HD video camera.
2.CCD or CMOS
Current high-definition network camera shooting parts generally use the CMOS or CCD.
CMOS because of its high price, a large proportion in the HD monitor. CMOS technology

is mature, can provide more high definition
Degree of image, to the network camera development left a huge space for development.

From the application, CMOS also has some inherent shortcomings, to
Low illumination and poor ability to adapt some. But this does not affect the main HD

camera.
CCD HD video camera, can adapt to low light environment, the image motion is also good,

as the network camera Mega pixels,
Is a good choice, but generally high prices. So the choice should consider economic

scene and system.
3.H.264 or MPEG4
Image resolution can put forward higher requirements on the image processing and

transmission. MPEG4 and H.264 two kinds of coding technology in the present
HD front are used, technical maturity, requirements of bandwidth compressed image is

slightly higher than that of the latter, but the price of the product.
In certain difference. To scale, network environment investigation system in the

application, in the comprehensive economic factors, can make a choice.
The 4 front end storage
HD monitoring occasions are often some occasions more important, on the security

requirements of the higher image, especially to prevent from the network
Network brings chance failure effect. Front end with a store is a good measure of image

compression coding, the front end after storage in the
The changes of storage media, regardless of the network environment, can effectively

guarantee the image storage security. But HD front not most
With a built-in hard disk, but the memory card as the medium, inappropriate measures,

may cause the medium early scrapped, then need and back into the
For cooperation.
The back-end systems often have two kinds of forms: one is the monitoring and

management platform (CMS), a network video recorder (NVR). CMS often focus on Network
Characteristics, focusing on large capacity storage and forwarding, user management, is

one of the upper part, and with the most HD video camera business relationship
Close attention should be NVR, so we in the HD monitoring system back-end is

predominantly NVR.
Back issues
NVR is also a product of network monitoring, in HD monitor before, NVR is in the DVR

terminator image, then in HD.
Control system, NVR will be a vital force, acting as the role of the market. In the HD

monitoring system NVR selection should focus on the examination
Check the following aspects:
1 image storage
HD monitor will increase the video storage space, so you should have enough storage

space for video storage, in particular professional
Occasions, the storage requirements are higher. NVR needs to have enough storage space,

can easily spread when the need for expansion
Exhibition, at present the common memory expansion device comprises a eSATA array,

IPSan array, expansibility and this often is a measure of NVR a
An important index.
On the other hand, a professional setting very high safety requirements for video,

reliability of storage media will be more important. A
Generally speaking, the industry has two kinds of method can improve the safety of

storage, a disk is off, multiple disks, one time only
A disk, do not work hard in a dormant state, which indirectly improve disk service

life; the second is the use of RAID technology.
Surgery, commonly used in the memory array, for a disk failure occasionally, replace

the disk can restore the image information more easily. For
To distinguish between these two characteristics and business level and professional

level system identification.
Page second: solutions to common problems
Image local decoding display is the basic characteristics of NVR products. Due to the

need for image resolution HD, general requirements for NVR solutions
The code image reduction HD camera, such as camera is the 1920*1080, show that NVR at

least can support 1920*1080 image
. Because of the need to decode HD image resources greatly, if NVR access road 16 high

resolution images, so it's not possible 16 HD
At the same time decoding display, it is not necessary, then you can use the multi

stream technology, single screen, high definition decoding display, multi screen

solution
Code is relatively low resolution image.
Apparatus for decoding display generally requires the VGA interface in the local, can

connectivity is VGA monitor, also should have
HDMI high-definition interface, in order to adapt to the application of more

professional.
The 3.ANR function
Positioning application market HD monitor determines the user multiple aspects of

quality requirements of monitoring system, a good NVR device,
Consideration should be given to the elimination of possible fault bring image loss

risk, but also easy for users to understand and use. At this time, ANR Technology
Is a very good solution. High-definition network camera and HD NVR must have the

technical ability, cooperative storage, neither
Waste storage resources, and not because of network fault led to the image during the

fault loss.
The construction of 4 large-scale applications access platform
At present, the majority of most of the HD monitoring system or industry network

applications, browse the HD image is not confined to the local,
All but can be applied in industry. So for NVR and high-definition network camera can

access large video surveillance management platform
Has become an inevitable demand, so the high-definition network camera and composition

of the dumbbell structure of small group, through the interconnection platform.
Into a huge application network. In the HD system, is whether to have the ability to

form network, became an important standard to measure
.
Solutions to common problems
High-definition network camera so that the image clarity has been a qualitative leap,

but also brought a series of realistic problems for HD monitoring system
:
Network bandwidth greater clarity: resolution, ultra high, means that when the data

transmission rate increases, increased
Pressure on network bandwidth.
A large storage space: data flow doubled, the recording capacity increases, bring

pressure to the network storage.
The center control, management software and hardware performance requirements grow

exponentially;
For the management of video image recording and subsequent analysis work will also grow

exponentially;
The high investment cost.
Therefore, in the pursuit of high quality at the same time, we should also consider for

the customer to solve the above problems.
Technical challenges facing the HD monitor can be resolved by the application.

According to the present situation, the user should not blindly pursue high
Qing. If all the front control using high-definition network camera, and uses real-time

HD transmission, to the back-end storage and
Transmission will cause great pressure, and cause the cost and efficiency of waste. So,

should be based on the solutions for the needs of users to design the,
Such as the design in high-risk places installed HD megapixel webcam, normally only by

ordinary resolution (CIF, D1) to transmit
Real time video image, and the alarm condition occurs with high pixel JPEG transmitted

in the form of high resolution image, to facilitate later put the Grand View
See details, control. This can greatly ease the pressure, pressure, reduce the storage

network investment cost etc..