HD surveillance into a comprehensive application in 2012, including IP Network HD and HD-SDI HD, and even high-960H analog lines in question into the high-definition applications. However, the trend in a high-definition, the author discovered a lot of doubts about the attitude for the application of high-definition HD-SDI and high-960H high resolution camera lines in manufacturers and engineering companies , also found that many outside the IP HD for other solutions distrust and understand the trends evident that this situation can not help but let us think 2008 IP network cameras has just started, the market for IP-system applications doubt the same situation. How to defuse and resolve their doubts and worry? HD is both a trend can not go back, then think about how this type of IP and HD SDI to integrate these different ways to be, then let us one by one to explore how to use the method to solve these needs it.
IP, HD-SDI and analog transmission distance problem of high resolution.

When it comes to these readers and works part of the problem might question, we first look at some distance from the conversion problems may not actually be overcome, when comparing general IP Network HD and HD-SDI HD, industry or works on transmission Suppliers often distance HD-SDI or analog IP and to illustrate the advantages and disadvantages of HD-SDI lie, but the author's views on engineering applications it is not necessary to go this demand in high-definition monitor transmission distance and the last three one in the video format as the system integration barriers reason, and the current IP Network HD and HD-SDI HD 960H high-resolution analog cameras and even in the common goal of a high resolution is not necessary in the selection of a standstill because of transmission problems In fact the current larger monitoring project for; because of the rapid development of optical communication technology, but also makes the cost of optical fiber transmission monitoring system greatly reduced, so Optical fiber and used in a variety of high-definition surveillance systems are becoming increasingly popular the current survey found that the fiber has been widely used in various industry sectors monitoring system. Also in the monitoring system HD-SDI signal transmission, in general most of the short distance of about 100-200 meters can be used coaxial cable, you can also add a repeater (Booster) way, the transmission distance will be extended to 400-500 meters. If long-distance transmission network architecture, the most common is the HD-SDI through the transfer of Optical Fiber optic cable converts the transmission, and in order to meet the multi-channel HD-SDI signals of one-way or two-way transmission, Optical transport infrastructure have In WDM / DWDM / CWDM and other multi-channel optical wavelength transmission frequency mode, and reached all the way over the HD-SDI or analog video signal carrying fiber optic transmission requirements, which allows analog and HD-SDI camera signal transmission reach 30-70 km. Most general industry applications for network transmission distance and transmission applications such principle is well-matched, the fiber-optic network based on Internet and coaxial plus a supplement, the architecture has been greatly in monitoring project The adoption of, and this architecture to maximize cost savings and reduce the impact of bandwidth on IP or HD-SDI HD video transmission.

IP and HD-SDI: It is more troublesome storage sharing

Originally simulation systems and HD-SDI system Most storage systems are used to store local DVR native way to now, whether it is HD-SDI signal or analog plus network of high-definition images can be embedded HD- DVR, HD-NVR perform access and storage. In HD-SDI, for example, the standard resolution of 720P or mainly for 1080P, a frame rate of 25 or 30, the amount of data after the analog-digital conversion for 1.485Gbps, the cost of using such an amount of data directly to storage is considerable Therefore, from a practical consideration, the video store, or to return to the network compression, but also moderate general D1 quality video using the same approach with the event, such as HD video recording mode and IP. This will not only detract from the high-definition images of transcription, but also provide real-time video source smoothly. If according to 720P or 1080P @ 30 Collocation convert video frames per hour, the amount of data storage capacity 400-650 trillion calculations a month each way takes about 350-500G capacity, so you can estimate the needs of DVR the number and configuration of high-definition monitor using IP or HD-SDI HD video best way.

IP and HD-SDI how to manage the back-end operations in At present, in addition to IP network monitoring and management platform, many manufacturers have for HD-SDI or HD-DVR Matrix launched a new all-digital, open network video networking platform, you can call the matrix-encoded or HD-DVR encoded Video can be achieved with an integrated monitoring and management platform IP VMS or NVR integration between each other between systems, alarm linkage, information integration and unified control and management information release. With powerful data management capabilities, the system can centralize data management, retrieval, query, analysis and statistics, including various types of event information, and alarm information. But there is still a lot of people for the HD-SDI camera management platform tools currently skeptical, but in fact, integration, centralized management and control is really encounter problems. But it also signals the solution is not difficult to achieve this requirement, the front part of the take coaxial cable with Optical transmission mode all the way back to the control center side signal, image demodulation and then connect to the big screen in real-time monitoring, After the transfer has networking capabilities into the HD-SDI video recorders, software management platform with all SDI matrix or HD-DVR networking management, so not only can reach IP platform management requirements, but also can easily and quickly perform all monitoring points HD picture different allocation of work, while; there is another solution after demodulation by the encoder encodes video into the HD NVR / NAS / SAN for storage and management.More than just how to use the transmission and transformation line integration of various types of high-definition surveillance program to do a project application simple explanation, but I believe that under no practical training, there was still some works to integrate the coexistence of these different HD and high resolution part to question. I can understand this, after all, part of literacy 960H HD-SDI and high-definition and application solutions for one of the few examples to Contractors and advanced readers still afraid to fully accept the time, but there is little need to explain this concept, HD is an inevitable trend monitoring requirements, but a different definition and high-definition formats and applications must have a reason to stand point of its development, which is being Contractors or builders did not view.

IP, HD-SDI and Analog HD encoder how to coexist

After the HD-SDI on a large scale by the end of 2011 appear on the advantages and disadvantages of the two sides for practical applications, often magnified by the media and manufacturers to discuss, but in fact, from a pragmatic point of view IP works with HD-SDI, and analog lines are high To improve the recognition rate and image clarity monitor the emergence of products for the same purpose, applications are the same, it should be able to mix coexist king is HD monitoring applications. First we look at the definition and high-resolution front-end; regardless of IP or HD SDI, whose aspirations are clearly seen in What to see, in real time and also complained ball smoothly, there is no need to give up any of the applications may provide high-definition images chance, but how to coexist with these different HD cameras in the front of it?

To co-exist we must first consider the use of architectural issues on both located in the use of transmission, if the original system is a coaxial transmission system, then we can be divided into two ways to solve the coexistence of these three cameras on the project. The first in the traditional architecture of the coaxial cable can be installed in our back-end IP network camera SLOC (Signal Link Over Coaxial) transmitter and receiver unit, using the principle of transfer and conversion mechanisms, allowing IP HD cameras to use the original system Existing coaxial cable, while the SLOC transmission equipment may also provide simultaneous TCP / IP and Video signal video signal output, TCP / IP network transmission device to receive the signal into the SLOC then reduced to the network access network signal routing architecture, Video image and video signals can be entered on both the analog video matrix or HD-SDI digital video matrix systems or organic DVR, this part of the first address of the IP network camera barriers in the traditional coaxial cable transmission, also contributed to solve Unable to replace its analog system architecture or cable can not swap the main dilemma. HD-SDI SMPTE-292 radio and television signals are already available on the traditional coaxial cable transmission, so after receiving the SDI signal can be input directly to the good faith HD (SDI) -DVR or matrix system, this way for System architecture definition change and let IP and HD SDI to achieve coexistence. If considering both analog cameras or 960H high resolution camera should be incorporated into the system, and that at the same coaxial cable infrastructure to simulate high-960H is a general analog camera solution will be integrated through the DVR or matrix for the same system coexistence nor difficult, in fact, present in more than mixing in such cases is a lot of infrastructure projects to adopt the way.

The second is the existing transmission system architecture for TCP / IP network architecture, the IP network camera at this time is the main architecture of the whole system, and for non-IP 960H HD-SDI and Analog HD high resolution analog camera should be general and into a system, you must also have a mechanism for use in the transport and conversion to make analog and HD-SDI HD equally smooth run under a single monitoring system architecture, how to do it? We can have two different ways to the HD-SDI signal into a result TCP / IP networks can be reorganized, we can take all the systems will be HD-SDI HD camera incorporated in the HD (SDI) -DVR, then TCP / IP DVR output signal to be incorporated for routing network equipment, which can itself be human-computer browser to HD-SDI video cameras for image control and PTZ control through the CMS software or DVR.

We can also come through the SDI-DVS video encoder, the HD-SDI signal of the camera directly using the encoder Encoder good way signal into TCP / IP signal, so it is the same as the IP camera can be individually will HD- SDI video signals into a network monitor IP routing directly on the way. As the same principle 960H analog camera and then through 960HDVR incorporated to monitor IP routing directly incorporated, of course, also possible to additionally image video signal directly to the video encoder DVS signal converted into TCP / IP network monitoring infrastructure mode to meet the needs.