2010 due to the introduction of a large number of network HD products industry dubbed the "HD Year One," the title; only a year, the industry has seen dramatic changes, as technology advances, other industries into the network HD is no longer only dominate the high-definition security, such as 960H analog HD and HD-SDI digital HD competing born the third of the world want to be with the network HD.

Network HD after another year of experience, they have been gradually mature, dominant 1.3 million, 2 million pixels high-definition products, 3 million to 5 million pixel high-definition products are also many more valuable, thanks The advantage of digital technology, they can also be embedded in the intelligent analysis applications, the solution for high-definition has become more mature, regardless of the clarity, illumination, wide dynamic image performance effects, have excellent performance

The thunder of the analog camera is almost overshadowed by digital products limelight, but the 960H analog HD products everywhere, perhaps we should see the analog products, there is still much room for improvement. 960H HD-ready solutions, including analog cameras side by Intersil Techwell and Sony's common definition and development of Sony new generation of 1/3 ", 1/4" wide dynamic, the illumination 960H the CCD Sensor and Effio series of ISP solutions DVR end Intersil's the Techwell latest release of the TW9960 analog HD A / D solution. The new 960H standards not only fully compatible with traditional SD video standards, more image resolution can be increased by more than 30% of the video image preview up to 650 lines, video playback of up to 540 lines, regardless of the preview or playback image quality. (540 line preview playback of the 480 line) meet the real-time at the same time, further to meet the user requirements for higher image quality than traditional D1 image quality. 960H resolution is 960 × 576, just 1/4 1080P, the user can smoothly transition to the 1080P system. 960H camera with traditional DVR equipment for use; TW9960 program DVR compatible with traditional D1 analog cameras

960H before the appearance of many engineering companies want HD projects can network HD not only front-end program to replace the camera, also includes the lines, storage devices, etc., caused great difficulties to the project to transform; 960H to break the simulation can not achieve high-definition monitoring of the status quo, just replace the front of the camera can be, the rest of the original equipment without replacement, and construction to facilitate greatly the favor of the engineering business. 960H product characteristics, is that it inherits the advantages of analog products, without delay send the image, the image quality without the codec, realistic image reproduction

In last year's security show, SDI model products have begun to take shape, the only manufacturer world Albert, Everfocus, Skyworth, a handful of manufacturers on display, last year's security show, SDI is no longer eye-catching, replaced by HD of SDI products, HD-SDI, only a year and circumstances, the SDI technology with the security has been in-depth integration, and According to rough statistics, this year's event production and manufacturing with the manufacturers of SDI related products over 80 products include cameras, light end machines, storage devices, monitors and other products, a few from last year to more than 80 in this year's annual growth rate of the number of times really let us unexpected. SDI technology has its obvious advantages for digital signal, but not by the codec compression, the image directly on the wall showing, lossless data transmission, high-definition sharpness, transmission delay, can realize the full HD presentation, and transmission media more flexible, using existing coaxial cable to complete the construction is simple and excellent monitoring results allowed the first choice of the monitoring program into high demand

Broadcast digital technology was introduced to the security industry has been to show strong momentum of development, because of its expensive cost and storage bottlenecks once so many people in the industry are not optimistic about its prospects for development, but focus only on real-time monitoring, such as application of military exercises, the use of high-definition signal source directly on the wall, compression and storage, then its disadvantages will be able to ignore most of this year's event on the manufacturers to adopt SDI storage solutions

From this year's show, very few manufacturers flagship HD-SDI, SD-SDI camera. Demand for high-definition, some manufacturers have introduced support 1080P and digital cinema and higher-resolution image quality of the 3G-SDI products to further promote the growth of the SDI family. Is particularly worth mentioning is that the JVC is the introduction of the concept of levels of 4K-SDI camera with a resolution of 3840 × 2160 high definition makes the image extremely fine and clear, suitable for TV broadcast applications. According to JVC Han Xiaozhou manager, the current SDI camera up to 7K-SDI, it shows the rapid advance of technology development

Most industry insiders believe the network is the development trend of the times, and security to keep up pace with the times, the network digitization is imperative, of the existing defects, but to solve a breakthrough process; some manufacturers believe that simulation is the security of The main emergence of analog HD is a good network response; SDI technology can circumvent the network delay and data loss can be the application of digital SDI development is irresistible. Network HD, analog high-definition, digital high definition the same time, the advantages and disadvantages of the three high-definition technology, their own advantages and can not have both, their disadvantage but complement each other, short-term single technology can not completely solve the existing problems, it does not exist be superior to the case, the coexistence of the three high-definition technology