HD SDI application features

HD-SDI camera manufacturer in the security market, the HD-DVR and peripheral product manufacturers continue to increase, have a greater intensity of the catalytic high-definition technology for the entire market. However, the application market is still too many users and engineering companies are not very understanding of SDI monitor the contents of the product, not to mention all the applications of the SDI monitoring products. Hope that the paper describes the SDI products how to correct and effective application in the monitoring system to make a reference to the peer.

HD SDI application features

From the point of view of the imaging applications of high-definition products, SDI before the back-end all the different products can be summed up some specific SDI application features, such as image compression loss and image in real time without delay SDI application characteristics. Extended by the application characteristics to a variety of different industries SDI HD application architecture to come to understand that in addition to IP million high-definition HD monitoring requirements and the upgrade of the existing analog monitoring HD SDI applications exist development opportunities? The following I will deal with these application characteristics go into instructions.

System can be converted

The system conversion is most concerned about SDI application of part of the general monitoring system you want to first consider the part of the HD SDI architecture. Because of the SDI camera is listed, many users see the SDI image compression and delay effects, and whether to adopt IP network surveillance began to loosen, expect higher demand for seamless control and security requirements to join the SDI application. But how to convert traditional analog or IP architecture, intended for the SDI? SDI and how the IP architecture? The system signal conversion discourage users and engineering companies.

The good news is that, under continuous research and development of a variety of vendors converter interface (Convertor) and SDI server (SDI Server) and various support interfaces (such as HDMI, CVBS, DVI,, Ypbpr, the SDI UTP, etc.) output . SDI signals can be converted Cheong Hang in the simulation framework or IP on top of the structure of the application. At the same time, the applicability of the cable, regardless of the HD-SDI

Or 3G-SDI can be no obstruction to replace the existing coaxial analog cameras and even the original SD standard definition network camera, the system can be the conversion of the network interface into the platform integration. Under the original analog and IP routing can still use the system components and device management mode of operation the same, just replace the necessary hardware equipment, without any use of the training will be able to smooth the upgrade to high-definition real-time monitoring from the network standard definition and analog monitoring .

Transmission can be of long-distance

The second HD SDI monitor the development and application characteristics is that the signal transmission over long distances to achieve. SDI early present, whether manufacturers, users, or Contractors, and both SDI distance reported to the pessimistic and skeptical attitude. Regardless of the SDI itself or HDMI / DVI / YC and so will not reach the monitoring the application of the system desired transmission distance, SDI and almost disappeared. Until SDI chip bandwidth is improved and the optical fiber transmission interface (Fiber Link), security monitoring applications are no longer limited by the transmission distance, the SDI equipment manufacturers kindled a ray of hope. Objective based on the IP HD monitor and HD SDI monitor their own advantages, at least from the current SDI development is exciting, especially in the SDI monitor itself signal transmission technology need to be addressed long-distance transmission to overcome. Supporting transmission equipment is not, contractors are less user-facing product selection, and higher costs, but the way the popularity and awareness of SDI transmission applications has been greatly enhanced, although less than the IP network HD monitor .

Overcome store homogenization

Then talk about the storage of non-heterogeneity in SDI application characteristics. The same conditions as the transmission distance, SDI high-definition monitor in the images stored on the beginning of facing doubts and ridicule, was mistakenly believe that there must be a file data is too large, the storage space requirements and cost of factors, so that once would like to use SDI monitoring system users and engineering companies pressed the brake, then most of the security vendors have also questioned the view of SDI development of storage, and holding a wait-and-see attitude. Fortunately, in addition to the SDI chip manufacturers SDI transmitter and receiver chip successful detached BT.1120 @ 25/50fps (30/60fps) HD signal and smooth rides on the use of TI, Hass, GM compression CODEC SoC chip DVR; at the same time more manufacturers to develop SDI chip card makes SDI storage into the PC Base architecture from the monomer Stand-alone, specific SDI HD DVR storage, images are stored on the IP network storage have such as the same quality with the capacity of the realm. This is the third application features HD SDI monitor, front-to back-end architecture and finally have a complete application form.

Audio and video control platform management

This application features is also the beginning of SDI is now very worried about and questioned the part. Many users or IP network monitoring industry are proposed SDI monitoring system platform management mechanism is not suitable for large-scale surveillance system applications. SDI is not a network camera instead of the IP architecture, it does not matter and the software integration integrated, but there will be no management platform mechanism. This is indeed a major drawback of the SDI monitoring equipment in the control and management and turn into the SDI system conversion characteristics by SDI server (SDI Server) TCP / IP signal, NVR platform software to integrate management become possible. In addition, stored in DVR network interface via SDI into the management platform is a natural path, is also an audio-visual + fully compatible with integrated PTZ control. At this point if the argument raised platform management to SDI is probably out of a single high-definition network to monitor the industry's insistence. Such insistence is not wrong, after all, the SDI the new car just the factory, just like six years ago, the birth of IP network monitoring, you need to run need to test adjustment to make it more complete.

Matrix application of renewable

　Six months ago, many users and works to the manufacturer in the matrix (Matrix Switcher) SDI signal can feel a lack of confidence. Even pure that multiple SDI image matrix cross circuit (Cross-Point) and multi-image synchronization signal (Sync Signal), SDI is not a CVBS composite video signal, rather than the vertical sync control image switching and video distribution , for some manufacturers to introduce the SDI control matrix host looked down-hearted, just wait and see attitude. But under the power of the technological breakthroughs of at Abou meeting in Shenzhen, the SDI equivalent circuit (SDI Equalizer Circuit) and SDI signal splitter (SDI Distributor) and chip manufacturers, the SDI control matrix has launched the official version. Articles testing found that, although part of the matrix products in the control of the keyboard and display function is not yet complete, the capacity yet to be seen larger than 96x16 matrix size, but SDI comprehensive alternative to the era of the traditional matrix should be far.

Image Processing and Intelligent real-time node applications

SDI application of another key feature is the SDI uncompressed digital surveillance products the effect without delay, although experts say there are still 40-50ms delay, but not the naked eye vision can see the error. Provide more details for the video surveillance, to maintain the integrity of the image and no distortion of the original, this is unmatched by other analog or IP network monitoring system, image processing wide dynamic SDI signal-to-noise ratio the excellent range of real-time images with its quality relative IP network monitoring to be more smooth and delicate, this application features is dependent on the performance of the DSP chip or ISP with sensors reached. There is a very important application of intelligent detection and analysis, image distortion without delay, to the intelligent judgment and analysis greatly improved the accuracy of intelligence analysis algorithm, also intelligent video analysis IVS evidence provides the best protection. This is SDI the advantage of application characteristics.

Broad horizon and cost reduction features

Last an SDI application characteristics, only the front of the camera with SDI products, but also important, that is, the IP network monitoring recognition rate, having reached 16 million or 20 million pixels of super high-definition camera network monitoring applications or to high-definition HD-720P @ 25/50fps and full HD the Full HD 1080P @ 25/50fps for product identification rate of the spindle. This is mainly because the IP network camera in this HDTV formats can render maximum viewing angle, and the smoothest HD Resolution also take into account the broad vision of HDTV Hi-Def format camera on the installation of the same demand can be a group of high-definition arrived 2 to 3 SD camera effects. Similarly, strict definition SDI screen ratio is 16:9 norms under 720/1080P the perspective of the camera to the HDTV format as the standard, which means that an SDI camera picture point of view this can be arrived on screen 2 to 3 groups of the horizon size needs. Relatively speaking, it can be in the system implementation cost than 2 to 3 SD of build costs, streamline, and this is one of the SDI advantages.

The seven characteristics listed above are the advantage of SDI products on today's video surveillance on the application of the different needs of the industry grasp these seven SDI digital HD system planning more smoothly. Of course, behind these advantages as SDI's weaknesses and problems. Image such as the integrated application of SDI back-end products in the camera's digital bandwidth format, different brands and back-end horizontal access control alarm and other subsystems will be compatibility issues; other cable materials affect the SDI product applications smoothly or not the conditions; again, the compressed video signal and platform integration HD-DVR image rendering, still, such as front-end signal as clear and smooth, must be considered are the application of SDI products. But it is believed to hinder all these applications will soon be the technology development to overcome.

HD SDI industry applications

Described SDI application features the following we will focus on two important industry for a wide range of road traffic and regional financial and banking, for example, HD SDI products in the industry safety how to construct the system application.

Road side of the camera front-endTransportation industry applications

The transport sector was the first one of the SDI digital high-definition products industry. Road monitoring, for example, which is characterized by day and night all-weather use, the target speed change difference, to monitor the details of the target, the long-distance transmission and the large number of clouds constructed. Suitable for the application of the SDI digital high-definition products.

Road side of the camera front-end

Past road traffic monitoring camera at the junction provisioning may need at least 4 to 8 be able to meet the intersection surveillance video coverage, while the SDI camera, the actual engineering verification only the original 50% of the number can meet the original cover the needs . In addition, in the mouth portion of the road card, the original monitor requires at least three groups to monitor the license plates, models, and drivers image shift to SDICamcorder Pro IP megapixels camera, only one group SDICamcorder Pro can complete monitoring license plate models and drivers, and even the bayonet charges process clearly into the picture. More valuable SDI provided real-time uncompressed video, and can provide the missing records for traffic incident, this may be the IP network monitoring systems can not be done.

Middle of the road transport

Past highway to Optical transmission structure, in terms of right now some of the IP network monitoring, network interfaces, gateways, switches, and Optical is the road the main components of the transmission. Regardless of today's IP network architecture or traditional analog fiber optic transmission architecture, in the SDI signal conversion and Optical SDI and SDI video server, we can in the front end of the original IP architecture put on SDI cameras and SDI to TCP / IP, SDI Server switched to the original IP standard definition SDI HD into network monitoring, into the IP Optical long-distance transmission. Can directly replace the IP Optical Fiber launch and receive optical transceiver for SDI to SDI camera signals directly to the back-end, obtain the return of the real-time SDI signal and then into the DVR or matrix system and on the big screen. The points raised in the road traffic monitoring using fiber optic cable transmission, is a reasonable and correct SDI replacement applications.

Back-end management and monitoring center

The network monitoring or traditional matrix systems, the monitoring signals are one by one back to the monitoring center stack architecture can be used to form the system. That is, whether analog or IP network monitoring signal, the first part of the section of road or highway to be DVR or satellite matrix (Satellite Matrix) focus on the collection, and then select the part of the return or all of the return structure. Therefore, the signal terminal may be based on the DVR / NVR coupled with the network switches and gateways to complete the return of a signal. To analog signal by the Optical out directly into the matrix of images and control allocates processing power. These structures has long been, if the application of SDI products in the backend, facing the original IP architecture, as long as returned by the IP Optical image intact connected to the existing network routing, do not need to do any lines and structural changes to restore the SDI signal shall be coupled with a SDI signal to restore the SDI server. This will restore the SDI signal connected to the big screen or monitor can be completed a more complete system. But there will be network delay and Resolution will reduce the SDI signal transmitted through the network there are still concerns, returns the HD-DVR monitoring platform to the TCP / IP and then collect the signal showing whether the original SDI compression without loss compared to some doubts. SDI Optical signal returned to do the back-end image signal showing the processing and storage is more favorable, but also to be considered reasonable and more economical application of the SDI system on the road monitoring.

Financial industry applications

Finance is the SDI digital HD product specifications use the application industry. Bank, for example, the Office of banking establishments around the clock day and night use, the target to focus on a specific location details of target short-range transmission architecture and seamless construction of regional characteristics, some particular place is also suitable for the application of the SDI digital high-definition products, following the previous back-end architecture to explore how the financial and banking applications SDI digital HD monitoring

Banks within and outside the front of the camera

Camera deployment of traditional banks, you must create a seamless connection monitoring system in the counter area, treasury, business offices, entrances and exits, and an ATM, do not miss counters must meet the banknotes out of the collection and payment process, so each teller head at least have a camera, a specific area of ​​the banknotes out of the counter will have 2 to 4 camera video surveillance, coupled with the area outside the business hall waiting area and entrance and banking, not including an ATM, there is an average of about 30 groups of constant video surveillance video cameras inside and outside in the bank.

However, the SDI camera, verify the actual project, the original number of cameras on the counter will probably be reduced by 33%, the operating room can be reduced by 50% the number of cameras. Not only meet the original cover the needs of personnel face and wear and other details of the internal action of the counter teller, come and go, the details of the action of the number of banknotes, banknote denominations, and other minor part of banknotes on the counter can be SDI HD under real-time to be 100% grasp. In addition often in the past in the face of the accidents of the bank outside the body type and banks outside the vehicle license plate, model and driver image after shift SDICamcorder Pro can achieve the effect of the disdain for IP megapixel cameras. Because the regional environment of the bank, the front end there is no absolute need for IP network cameras, using the SDI camera would be able to achieve true high-definition with no loss in image quality.

Transmission within the middle of the line

The Bank is a closed environment and closed transmission architecture can adopt IP network surveillance, but also the structure of the coaxial cable can be used. Most of the past financial and banking line image transfer is still based on the coaxial cable architecture, very conducive to the HD SDI application, replace the SDI cable quality conditions and also can save on cost and engineering facilities for a lot of work and costs, to improve the overall system, SDI application monitoring to be more economical than the IP network. As for the bank's networking requirements specification, HD-DVR Client Architecture, TCP / IP access, distance network monitoring.

Back-end banking supervision

Banks in the past network monitoring, host to the DVR-based, with the disk array storage, monitoring signals are also a back to the DVR, including DVR responsible for the core work of the banking security. With SDI, HD-DVR control framework existing to form a completely do not need to do any of the lines and structural changes to restore the SDI signal, coupled with the SDI signal splitter, HD SDI signal connected to the monitor to the big screen or LCD monitor can become a complete system. However, through the network transmission SDI

HD-DVR signals whether there will be network delay and reduce the Resolution, there are still concerns; for HD-DVR before returning to the network remote monitoring platform, the signal showing can not guarantee to keep the uncompressed lossless image with the network conditions and quality. For banks, the scene end without delay and lossless video is using SDI digital HD system is the most powerful driving force.