Video monitoring of universal programmable SoC trends (1)

Digital video surveillance system includes not only suitable for DSP video compression codec, lot for CPU control, management, storage, and network functionality, so that higher level of integration will be achieved through the SOC.

The industry has generally recognized SOC has two or more processor cores of the monolithic system, and to have a CPU main processor and also a DSP and coprocessor types from soft core, which is the hard core ASIC class, or even can contain other specialized processing subsystem, and integration with rich peripheral interface.

We all know, universal programmable DSP leads all the rise of digital video surveillance, however with digital video products industrialization process, when a certain phase of the technology mature, there will be numerous custom components participating in the competition, which is programmable platform in a continuous improvement basis but also, and even a new concept of breakthrough can be invincible.

Digital video surveillance system includes not only suitable for DSP video compression codec, lot for CPU control, management, storage, and network functionality, so that higher level of integration will be achieved through the SOC. SOC System On Chip known as, the law on its Chinese translation, may have different views. Some people think that the literal translation is "SOC" and some people feel that seems to be "more accurate" monolithic system. The industry has generally recognized SOC has two or more processor cores of the monolithic system, and to have a CPU main processor and also a DSP and coprocessor types from soft core, which is the hard core ASIC class, or even can contain other specialized processing subsystem, and integration with rich peripheral interface. The following will be combined with Texas instruments (TI) universal programmable single-chip system in digital video monitoring on SOC development benefits and trends.

Single SoC platform for multiple products

TI the planning of video surveillance products general-purpose programmable platform started in DM642 universal media processors, this is a DSP core integration with rich peripheral interface chips, its global sales volume has exceeded 10 million cumulative.

On this basis, TI planning out da Vinci (Davinci) platform, which is a series of SOC, fully embodies the characteristics of single-chip system, which can be applied to embedded DVR and NVR multichannel set don't, taking into account the needs of DVS and IPC, a platform that can support a variety of different types of product development, reduce research and development investment and accelerating product launch cycle.

DM644X is the first of Davinci chip, integrated ARM9 core CPU time, the integrated DSP is a C64 + core, integrated video co-processor VICP.

In addition to the integrated video subsystem also contains the front-end and back-end components, including front-end can directly with CCD or CMOS video sensor with image zoom and preview tool, there are so-called "3A" feature, that is, the auto white balance, auto exposure and auto focus control unit; back-end integration multilayer title overlays (OSD), four video DAC and 24-bit digital RGB output. The integrated peripherals include Ethernet interface, PCI interface, SPI serial interface, ASP audio interface, USB2.0 interface, ATA hard drive interface, MMC/SD card interface, etc. Software development is open, you can use industry-recognized software multimedia API for system integration. As in Figure 1 is based on the video surveillance product DM644x.

Figure 1 is based on the video surveillance product DM644x

Davinci series contains mature video software, sophisticated development tools and strong technical support, so a prototype design can produce digital video recorder, digital video server and IP network camera, more product form.

Davinci is built is a digital media development framework, and will provide various series of platform sharing.

Many SoC platform for single products

A successful performance SOC platform for industry recognition and market-proven, DM644x, which extend into more applications in the series.

In the follow-up single-chip system Davinci, DM646x, are the main CPU DM3xx, and integration with DSP soft core and processing subsystem and a rich peripheral.

DM643x and although there is no main DM648 CPU but the DSP core, but can be based on DSP BIOS real-time operating system?, or third-party commercial Linux embedded real-time operating system, integrated with processing subsystem or coprocessor soft core, as well as extensive peripherals, you can customize the way into the system.

IP network camera is a very typical video monitoring products, customers on their product specifications from different needs, the Davinci to unified digital media framework provides support for different platforms.

DM6446 supports H.264 D1 and attached under the intelligent video features; DM6437 for upgrade from DM642 platform also supports H.264 D1; under the DM355 IP camera based BRUNELL personable, its features can support MPEG4 HD single-chip 720P encoding, while also supporting a CIF streams. Video front-end can be directly attached CCD or CMOS sensor. There are a variety of storage on an interface. The film bundled software free, craft uses low-power design, easy to realize small integrated design. Just launched in addition to the above all DM365 benefits, increased support for high-definition H.264, and integrated audio and network enhancements, and video front-end with ISP units can support face detection, video stabilization and noise removal functionality; under can support 1080P DM6467 H.264 high-definition and by the integrated DSP core C64+ Support for advanced video analytics capabilities, and supports high-definition BT1120 HD input and Gigabit Ethernet interfaces. As shown in Figure 2 is based on the IP network camera Davinci.

Figure 2 is based on Davinci programme of IP network camera

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