In the early days, foreign manufacturers almost monopolized the Chinese market. However, with the increasing market demand for high-speed ball and all-in-one movement, some domestic manufacturers who master the core technology have successfully launched the domestic one million HD all-in-one movement, and are equal to foreign manufacturers in performance. In terms of market, in the first three quarters of 2011, the movement of one million HD all-in-one has maintained a growth rate of 10%, and the movement of one million HD all-in-one of domestic brands also accounted for 35% of the whole market.

The security industry is experiencing the development direction of “digitization, networking, high definition and intelligence”, and the movement of all-in-one machine is no exception. With the improvement of HD all-in-one movement performance, it can be associated with the improvement of HD fastball machine, integrated camera and other related products. The market application of HD all-in-one movement is ideal. Similar to the traditional analog integrated movement, HD integrated movement is more suitable for remote monitoring, and is a better choice for monitoring in traffic, port, safe city and other places.

Market growth is accelerating, high definition demand is obvious

At present, the movement of one million HD all-in-one is developing rapidly. Many manufacturers with R & D strength have begun to invest a lot of manpower and financial resources in the development and production of one million HD all-in-one movement. Moreover, one million HD all-in-one movement can be used in a variety of product forms, such as high-definition fastball, high-definition red ball, high-definition integrated camera, high-definition PTZ and so on, The dosage is huge. Due to the high adaptability and flexibility of the motion of the one million HD all-in-one machine, it can be applied in many industries and fields, such as safe city, road monitoring, community monitoring, plant monitoring, campus monitoring, etc; In some subdivided industries, such as public security, law enforcement, electric power, etc.

On the other hand, the early HD all-in-one movement was almost monopolized by foreign manufacturers in the Chinese market. However, with the continuous expansion of the market demand for high-speed ball and all-in-one movement, some domestic manufacturers who master the core technology have also successfully launched the domestic one million HD all-in-one movement, and are equal to foreign manufacturers in performance. In terms of market, in the first three quarters of 2011, the movement of one million HD all-in-one has maintained a growth rate of 10%, and the movement of one million HD all-in-one of domestic brands also accounted for 35% of the whole market.

The breakthrough of high definition picture and full digitalization

At present, analog movement products still occupy the mainstream in the market, but from the development of the industry and a series of trends of manufacturers, we can learn that the role of HD movement in the monitoring market is increasing. Compared with analog movement products, although HD movement products involve the change and upgrade of multiple module technologies, in essence, HD movement has two advantages: 1. HD picture; 2; 2. Truly digital.

The main performance of high-definition images is that the pixels provided by the high-definition movement can be increased from about 400000 pixels of D1 to 1.3 million pixels, 2 million pixels, 3 million pixels or even 5 million pixels. The increase of pixels brings a wider angle of the image, making it possible to have high-quality images in the case of high magnification; In addition, the resolution of 1280×720 is more prominent than that of 704X576, which is used in combination with ball machine or integrated camera. For the more widely used areas such as social security monitoring, the high-resolution video is to investigate and deal with illegal vehicles The suspect and so on provided important technical means and evidence.

In analog movement products, the analog signal generated by CCD sensor is first converted into digital signal, which is processed by its built-in DSP chip, and then converted into analog signal again for transmission on coaxial cable. Finally, when the analog signal reaches the back-end DVR, it is re digitized and stored on the hard disk. In this process, the three transformations of image signal will result in the degradation of image quality. However, in the movement of HD all-in-one, the image will remain in the state of digitization after digitization, and there is no need for multiple D / A or a / D conversion, so as to realize full digital transmission.

Core technology innovation of sensor, lens and DSP

The hardware module structure of HD movement is no different from analog products, but its core hardware such as sensor, lens and DSP is a qualitative leap: the movement of megapixel HD all-in-one mainly continues the CCD sensor, and the most representative is Hitachi’s di-sc110-c 1.3 megapixel HD all-in-one movement, which has blown up the hurricane of HD movement, with excellent clarity, high resolution and high reliability Depth of field performance, excellent low light performance, zoom zoom, as soon as it was launched into the market, it was immediately favored by many high-speed ball manufacturers and all-in-one machine manufacturers, and quickly occupied the market. However, in the movement products with more than 2 million pixels, the main products are CMOS. Sony’s Exmor CMOS, that is, back illuminated high sensitivity CMOS, whose low illumination effect is comparable to CCD, completely subverts the previous impression that CMOS has poor night effect;

In terms of lens, some manufacturers began to introduce higher zoom HD lenses, such as 22x, 28x and other optical zoom lenses, to meet the market demand. However, due to the relatively high technical threshold of telephoto lens, and the relatively small number of manufacturers capable of manufacturing corresponding HD lenses, the price is relatively high. However, in terms of lens selection, the movement manufacturers are still foreign manufacturers. Tenglong, Fuji energy, Canon, Pentax and other manufacturers still have certain advantages in HD and telephoto lens technology compared with domestic manufacturers. However, with the continuous development and innovation of technology, lens manufacturers such as Phoenix, Fuguang and Hongfa optoelectronics are also the key choice of motion manufacturers.

DSP is a key point to test the technical strength of each company. The processing of 3A (automatic white balance, automatic exposure and automatic focusing) is an important index to measure the advantages and disadvantages of a movement. Generally, the white balance function of a good manufacturer controls very well in all kinds of scenes, and the focusing speed is very fast, no matter in the daytime or at night, the focusing time is less than 1s. In addition to 3a, DSP also has wide dynamic, transparent fog, intelligent analysis and other technological innovation functions. At present, some manufacturers are promoting it, but at this stage, the component of gimmick is bigger.

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