Optical transceivers grow with HD

In the face of fierce market competition, security companies’ evaluation of the security HD market seems to be always too extreme. The more competitive the market is, the more promising it is, but we should also treat it rationally. Why do we define high-definition surveillance within a certain framework, and a diversified high-definition market is more conducive to the promotion of the security market. Whether it is an analog high-definition optical transceiver, an IP network high-definition optical transceiver or an HD-SDI optical transceiver, in fact, they have their own existing space, but also have their own significance. Optical transceivers have obvious advantages in high-definition surveillance, breaking through technical difficulties, and highlighting the advantages of optical transceivers in the future.

Optical transceivers have obvious advantages in diversified high-definition monitoring

China's optical transceivers have evolved along with the development of the surveillance industry, from analog to digital, from digital to high-definition, step by step, after so many years of technological accumulation, has developed to a very mature stage; Beijing frog as communication technology limited liability Yao Zhihong, the company's technical director, said: For the moment, optical transceivers do not have much technical breakthrough, but in the subdivided applications, some special functions can still be developed and improved, including the improvement of conventional performance such as system stability and capacity. This is also the motivation for optical manufacturers to tirelessly seek breakthroughs.

For high-definition surveillance, HD-SDI seems to have a great advantage in image quality, color reproduction, no delay in image transmission, image contrast, etc.; in general, non-compressed images are much more effective than compressed images. Let's talk about the transmission of SDI. The product can be transmitted by coaxial cable. It can be used with SDI optical transceivers for image transmission. Compared with high-definition IP network, the transmission distance is limited. However, there is no “mistake” in the lack of network bandwidth.

Manufacturers predict that the future high-definition monitoring IPC will be the only choice, but the main push SDI companies do not understand this, they believe that HD-SDI optical transceivers to meet the current market's diverse needs of efficient output; manufacturers of different opinions, so that some laymen are also a headache.

Optical transceivers crack long-distance transmission curse

The birth of a new technology and new product does not represent the "death" of another product. This is also the reason why analog monitoring is still not going down. Why can we not look at the problem with development perspective? Different high-definition surveillance products have their own meaning, and they can't negate the existence value of the product. Even if the product has been withdrawn from the market, it will cover his shadow in the new product.

If you start from the perspective of users, companies should give them the greatest help. If a customer wants to achieve high-definition monitoring, then manufacturers or engineering companies need to provide a complete set of SDI optical high-definition monitoring solutions based on the customer's actual needs, which has a close relationship with the input budget, front and back end monitoring equipment, and other fields.

Turn to the monitoring platform, the future remains high

1. Stabilizing performance is the top priority

While optical transceiver technology has matured, many manufacturers have shifted their development focus to improving product performance. Currently, the performance of optical transceivers is improved mainly from the following points:

The first is the development of single mode. Optical fiber transmission can be divided into multimode and single mode. The single mode can completely avoid modal dispersion, transmission effect is good, not susceptible to interference, transmission frequency bandwidth, transmission capacity, to adapt to large-capacity, long-distance transmission. The second is modularization and hybrid access design. The modular design is flexible and can provide scalable functions for system development. With the trend of digitalization, the integration of SDI technology and the coexistence of different standard products have caused inconvenience to manufacturers. In addition to the modular design, a hybrid access design is also required. RJ-45 network interfaces, BNC interfaces, etc. are provided in the equipment so that both analog signals and network signals can be transmitted in the same optical transceiver. The third is to enrich the application of optical transceivers.

2. Optical platform smooth forward

Nowadays, companies are moving toward selling products to provide a complete solution for the evolution of the system, and also to make video optical transceivers begin to develop in the direction of the platform. Therefore, the integration of video optical transceivers and other equipment to form a unified system platform will be the future. The inevitable trend.

3, optical transceiver and HD growth

The emergence of optical platforms has been a period of time. The application of optical platforms has on the one hand increased the capacity of the system horizontally, increased the number of access devices and optical fibers used, and on the other hand led to the convergence of multiple services. Guaranteed the quality of transmission, the previous analog transmission optical signal in the transmission process through continuous AD / DA conversion, resulting in transmission delay and signal attenuation during transmission, so that when arriving at the terminal, the quality of the picture quality is not high, The real-time performance is poor, and the appearance of the optical platform solves this problem very well. It is only necessary to call any digital image to the corresponding port to do the DA conversion. There is no need for the signal on the wall to still flow between the layers. In this way, only one AD/DA conversion is performed during the entire process, which reduces the loss of picture quality and guarantees real-time performance.

4, grow together with high-definition

High-definition has become the development trend of the security industry. As the transmitter of information, it has nevertheless unveiled backwards, it has also launched a corresponding high-definition optical products - HD-SDI optical transceiver, HD-SDI optical transceiver can achieve HD-SDI high-definition video remote Optical fiber transmission enables transmission of two uncompressed high-definition digital video signals and multiplex audio based on the SMPTE259M/292M/344M standard on a single-mode core. However, Shenzhen Nuolong Liu Xiaobin mentioned that the development of HD-SDI video optical transceivers has not been smooth because of the application differences between broadcast and video surveillance and the high cost and high costs. It is undeniable that the pace of development of the optical transceiver industry will not stop. In the future, the optical transceiver manufacturers will also make great efforts on optical power, multiplexing and other technologies.

5, development weakness

Although optical transceivers have been developed relatively mature, there are still some technical bottlenecks: First, compatibility, various manufacturers set their own analog, digital conversion and transmission protocols and standards are not the same, such as an open protocol, it is difficult to basically no way compatible with other manufacturers The second is the impact of network transmission. Shi Zhijun, Technical Support Department of Wuhan MicroPort Optoelectronics Co., Ltd., said: The development of IP surveillance brings two diametrically opposed effects to Optical: one view is that the two will develop in the future rather than in competition. One of them believes that with the progress of the IP process, the proportion of optical transceivers in the overall security is shrinking. Gigabit Ethernet applications and transmission flexibility are all priorities for optical fiber transmission. Transmission will become a reality, which poses a great challenge to optical transmission.

The end: Although there are some technical difficulties in optical transceivers, their advantages are that other technologies cannot replace them. Optical transceivers are focusing on the improvement of equipment network management, multi-services, and reliability. In the future, optical transceivers will continue to be the backbone of transmission for a long period of time. . The so-called "Road to Rome" means that optical transmission is just one type of transmission. There is no limit to the development. By breaking through the bottleneck of technology, we also expect that more mature transmission technologies or complementary solutions for various transmission technologies will emerge in the future. For the benefit of security.