The trend of single-chip SoC in digital video surveillance

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If digital video surveillance is an important and active emerging market at the turn of the century, then at the beginning of the second century of the 21st century, we will review the changes in this 12-year cycle. It is not difficult to see that it plays a decisive role. One generation after another, high-speed digital media processors, these highly developed integrated circuit chips, which are the most powerful core engines of digital video surveillance products, have been able to lead the way for three or four years. This paper hopes to explain the development trend of single-chip systems (SoCs) in digital video surveillance applications through four platform systems that are deeply affected in the digital video surveillance industry.

Core "ring" thing - - Universal Digital Media Processor DM642

As we all know, Texas Instruments (TI) is the inventor of the digital signal processor (DSP), and led the development and growth of the industry. DSP has spawned a variety of original designs and applications for digital video and audio, including the prototype of digital video surveillance. However, associated with this is the emergence of dedicated chip ASICs, especially the MPEG1 and MPEG2 dedicated codec chips driven by digital video VCD and DVD. Early DSPs highlighted versatility, so performance and price remained high, while software flexibility was strong, but peripheral capabilities were weak, especially with few audio and video direct interfaces. When the digital video surveillance application started, DSP was indispensable, but the real promotion relied on the combination of ASIC video coding and DSP audio processing. At this time, digital video surveillance is difficult to match the traditional analog system in terms of performance and price. Just the beginning of digital storage and network transmission features.

The multimedia platform has opened up a new way for digital surveillance, and the launch of the universal digital media processor is imperative, so TI's TMS320DM642 came into being under such a situation and became a star platform for the digital video surveillance industry. In fact, as far as the DM642 system is concerned, the core is the C64x, which is widely known to DSP practitioners at the time, and integrates multiple digital video interfaces and rich peripheral interfaces. The most prominent feature is the openness of the software system. At the beginning of the century, a large number of video compression experts gathered, MPEG4 and H.264 are not only technical means, but also become a market selling point, DM642 not only for DSP experts to enter the field of digital video surveillance, but also for the video compression application experts to enhance the platform openness The space of the hand. As for the DM642, it has reached a global sales of 10 million pieces in a few years, and the annual sales volume of more than one million in China is the trend of the times.

Once a chip is launched, it will receive such a wide response, and it cannot be said that it is a long-lasting miracle. The development of many digital video surveillance companies at home and abroad has benefited from this legendary wisdom core!

Core "phase printing"--general SoC digital media processor

If the success of the DM642 is a milestone in the history of general-purpose DSP development, with the development of the digital video surveillance industry, the new digital media processor system has become the dominant force in the digital surveillance trend.

With the ability of integrated chip integrated system, TI has made overall plans and concentrated efforts to launch a single-chip general-purpose digital media processor, which is named "Davinci." Nowadays, Davinci is the digital video surveillance field. The name is almost unknown, but it has caused a lot of doubts and puzzles in the initial launch and promotion process. Even here, there is still some discussion and reflection. However, as a new system, the process of creation has always been no. Flat, and is such a single-chip system (SoC) that integrates a high-performance DSP and a general-purpose embedded ARM processor, as well as a video processing subsystem and video processing subsystem, as well as a richer peripheral interface. More work is also in the comprehensive construction and support of the software system, which not only ensures the simultaneous operation of the universal embedded real-time operating system and DSP real-time system, but also coordinates video, audio, network and various high-speed digital interfaces.

The introduction of Davinci is to a greater degree of openness and easy to expand the architecture, facing a broader expansion space for the future. In terms of positioning, Davinci is not a simple replacement for DM642, so it is accompanied by chips DM6446, DM6437, DM648 for various specific applications. Some people may question that none of these chips seem to be as successful as the DM642. In fact, this should be viewed from a broader perspective.

First of all, the Davinci series of multiple series have successfully achieved the effective coexistence of multiple processor cores, which is a real sound. For digital video surveillance, the DM6446 has excellent performance in DVS and IPNC, DM6437 in intelligent video analysis, and DM648 in large-screen applications of video stitching.

Of course, the Davinci system's contribution to the digital video surveillance platform is also extremely far-reaching, even though some ASIC chips that emerged later have followed the structure of the SoC. It seems that Davinci is named after the master. It is in itself advocating an innovative spirit. This is not only an incentive for TI itself, but also an inspiration for the innovation of digital video surveillance customers. If in the industry, this impulse of innovation also contributes to the multi-form development of the overall industry, it is also gratifying, but through continuous competition, the industry can be developed to a higher and stronger goal, rather than falling into the low end. And the negative situation, for this reason TI is making unremitting efforts.

Core "Chi" fascination - HD SoC digital media processor

The rapid progress of digital video surveillance in the decade of the new century is mainly due to the fact that it has been completely replaced by traditional analog surveillance systems. However, the most critical direction is the implementation of high definition and intelligent, as well as breakthroughs in digital optical imaging technology. The success of the Davinci system is a reliable guarantee that the high-definition SoC digital media processor will continue to advance by leaps and bounds.

The development of the Davinci system on the HD platform is both high-end and low-end, but the 1080P resolution supporting the H.264 compression format is common. The DM6467 is a high-end platform with a C64+ core DSP clocked at up to 1GHz, and the two integrated HD-VICPs are high-speed video coprocessors with integrated HD video and Gigabit Ethernet interfaces. The DSP core provides the possibility of intelligent video processing, so it can undertake video compression processing of HD or multiple D1 channels while providing various complex video content analysis processing. The DM368 is a ground-oriented platform that supports 1080P@30 HD IP cameras and is compatible with the widely used DM365 series. It is particularly worth mentioning that TI also has a DMVAx series of intelligent video processing platforms built on the same architecture. The high integration of ARM with video coprocessors and video front ends is TI's innovative architecture derived from digital cameras and extends to the Davinci series. The continuous development of these two platform systems fully reflects TI's innovative ideas that continue to transcend. The DM6467 is capable of supporting 1080P@60 from the initial 600MHz, 729MHz, and finally to 1GHz.

The DM365 to DM368 is fully compatible with pins and software at frequencies up to 432 MHz. The video front end of the DM36x integrates the image signal processor. The ISP has been upgraded to the fifth generation. This important processing unit used to be an analog camera is now integrated into the processor. It only needs to directly connect the CCD or CMOS sensor, and everything is automatic. Exposure (AE) and automatic white balance (AWB) algorithm development has also become a part of processor development, and digital optical processing technology has become an effective means of digital video surveillance development.

The Core "There is a Heart" - A New Generation SoC Digital Media Processor

The convergence of digital video surveillance processing technology continues, and the current digital video surveillance market has flourished, and the thirst for a new generation of SoC digital media processors has long been imminent. TI has taken precautions to improve the Davinci system to achieve new breakthroughs by enhancing the higher innovative thinking of the Davinci system. As a powerful SoC digital media processor, the DM8168 handles the superior performance of H.264 16-channel D1 encoding and 16-channel D1 decoding. At the same time, there is also a single-chip HD camera with the same resolution of 1080P@60, which enables many customers to experience the immersive experience in front of the scene. This is the successful creation of a new generation of digital video surveillance processing platform, and also leads the future of digital video surveillance applications.

The DM8168 freezes the processing performance of H.264 compression encoding on three-way 1080P@60 or 36-way D1@30. All digital video compression processing is carried out by the new generation of video processor HD-VICP2.0 without the need to consume any CPU and DSP core performance, so the ARM9 upgrade to the Cortex A8 1GHz clock processor is almost omnipotent. The performance offered by the C64+ upgrade to the xC674x fixed-point and floating-point compatible 1GHz clock will give DSP experts more creativity. The DM8168 integrated video processing subsystem can support digital surveillance for professional real-world technology needs, such as deinterlacing, 3D noise reduction, video enhancement, etc. Support for 3D graphics display can make new digital video surveillance products Stylish and innovative interface. As for peripheral devices, all interfaces related to video surveillance, such as HDMI high-definition display port, SATA hard disk interface, and PCIe high-speed interface, are included. In particular, it is important to emphasize that

TI's SoC platform is based on a software-programmable architecture that can support multiple video formats. The DM8168 fully supports MPEG and H.264, as well as AVS, Real, On2 and many other formats. Recently, the DM8148 was officially released. This is an optimized platform with the same architecture for HD 1080P@60 applications, which integrates an improved fifth-generation ISP. As a result, the new generation of digital video surveillance platform system has taken shape.