The first is to use high-end camera modules (movement, such as PE 1005 of ACUTE and H1of Sony) as image acquisition equipment.
, support ASIC or DSP for coding, compression and transmission. This scheme is high-end. Because the professional imaging module is adopted, the original image effect is good, so the effect of the whole IPC product depends largely on the effect of the matching compression transmission module. The main indicators are the clarity and real-time performance of compressed images. This architecture is commonly used in mid-to high-end solutions.
The second is to use the high-end camera module as the image acquisition part, and then match an ASIC or DSP for coding compression and transmission.
This analogy is more operable than the first one. For example, the lens can be freely matched by itself, and some special functions can be customized to add value to the product. The imaging effect of this scheme is very good, and there is not much requirement for back-end compression and transmission. It is very suitable for manufacturers who have mastered the network compression transmission technology but have requirements for image effects.
The third is to use CMOS sensor as image acquisition equipment to provide ISP's SOC chip, which has obvious cost advantage.
The imaging effect of this scheme mainly depends on the ISP (such as 3A) integrated by the chip manufacturer.
And wide dynamics. ) effect; Another obvious advantage is that this kind of scheme is flexible and can be customized according to the characteristics of the scheme, such as snapshot, low frame rate, large video and so on.
For high-definition network cameras, network protocols and SDK are very important aspects. Each company has its own network protocol and SDK, and they are basically exclusive. In other words, the webcams are incompatible with each other and cannot be replaced with each other. If outsourcing module is adopted, this aspect will be in big trouble, including system integration and customer maintenance. High-definition network camera integrates the core cutting-edge technologies and applications in the current security industry: networking, high-definition and intelligence, which is also a necessary condition for integration.
1. Application scheme based on module +SOC(DSP)
At present, this scheme has the advantage of good imaging effect, and generally comes with its own lens. At present, 1080P supported by network compression module mainly includes DM6467 and DM368 of TI, MG3500 of Maxim, FH8735 of Fuhan Microelectronics, MB86H56 of Fujitsu, PNX 1005 of NXP, Hi35 16/20 of HiSilicon, etc. Among them, DM6467 and PNX 1005, which can do intelligent analysis based on DSP architecture, have their own advantages and disadvantages. Among them, TI is the leader in this industry, and there are relatively more people who do TI. The advantage of this scheme is that the image effect is good and the development difficulty is relatively small. The disadvantage is that the lens is solidified and cannot be used according to its own requirements, that is, the freedom of development and project support is small, so it is the first choice for high-end customers.
2. Application scheme based on onboard camera and +SOC(DSP)
At present, there are many such schemes on the market, such as Hi3516 of TI and HI. This scheme is suitable for customers who have mastered the network compression transmission technology and have high requirements for images. The front-end sensor and isp are integrated, and the indicators such as color reproduction and low illumination are handled very well. For example, our PE0003 module can well match DM368, HI36 16 and other schemes. After customer verification, the image effect is very good. This scheme has excellent imaging effect and great development freedom, and can customize and match lenses according to customer requirements and characteristics.
3. Application scheme based on sensor +SOC(DSP)
At present, there are many such schemes on the market, such as TI and Anba, which are also the largest shipments of high-definition machines. The market price is very chaotic, from ridiculously low to surprisingly high. The advantages of this scheme are low cost, easy to develop, and basically can be used together; The disadvantage is that the picture quality is not as good as that of modules or modules (depending on the ISP provided by the chip).