Introduction to Ti haisi Anba smart lipp and other top-level camera chips

Many years ago, the industry has talked about three trends in the field of video surveillance: digitalization, networking, and intelligence. Currently, the mainstream products of the security video surveillance system in the Chinese market have gradually changed from a pure analog video surveillance system more than a decade ago to a pure digital one-million HD video surveillance system, that is, from video collection, video transmission, video recording and playback, all use analog signals to all are digital signals.

Compared with analog video surveillance equipment, millions of high-definition digital cameras have greatly improved the image quality, with pixels reaching 1280 × 720, 1920 × 1080 or higher. Therefore, they are named "millions of high-definition. At the same time, compared with the transmission technology of analog monitoring equipment, digital video monitoring equipment only needs a common network cable, which is easy to achieve long-distance transmission, and more importantly, reduces the engineering cost and is easy to maintain. As the Pure Digital HD monitoring system is increasingly equipped with more and more complete equipment and solutions, it has become an irreversible trend in the field of security video monitoring, and occupies a dominant position in the market.
 

　　Camera chip functions

The digital camera consists of a lens, an image sensor (CCD or CMOS Device), and an arm/DSP. The lens aggregates the light reflected by the object to the image sensor, and then the image sensor is converted into a digital video signal and output to the chip through radio/TV. The chip performs a series of Digital Image Signal Processing (ISP) and after data compression, it is transmitted to the backend decoding display device through the network to achieve video preview, video recording, playback and other functions.

As we can see from the above, the camera chip is the core component of the entire camera. It receives images from image sensors and then performs a series of operations and processing, all functions of the Digital Network Camera are implemented.

Digital Camera chips are also known as on-Chip Systems (SOC ), it integrates processor resources, memory resources, codec algorithms, peripheral device interfaces, and so on a single platform. Most of the functions are solidified on the chip, and some special functions are modularized, the source code is provided to users, and users can perform secondary development based on different application needs. In addition, the SOC can also add video coprocessor and other video subsystems, video processing capabilities are further enhanced by features such as preview, zoom, optical processing, and Graphic overlay.

　　Manufacturers and products of millions of HD camera chips

As a high-definition digital camera chip solution, the SOC solution can effectively meet the needs of complex video processing operations and peripheral device interface expansion within millions of high-definition cameras. Currently, the most mainstream camera chip manufacturers include Texas Instruments (TI), hisilicon, ambarella, NXP, grainmedia, and nextchip.

Ti

The tms320dm368 Video Processor launched by TI supports multi-format HD videos, including vc1, MPEG2, MPEG4, MJPEG, and H.264. It supports up to 30 frames of encoded 264 p per second. In addition, the dm368 supports multi-Format Decoding, multi-rate multi-stream, and High-Definition Multi-Channel functions. It also provides audio, voice, and other high-definition video codecs for higher flexibility and lower design complexity. Dm368 adopts the ARM926EJ-S kernel to achieve performance improvement of more than 40%, the frequency is up to 432 MHz, and the video encoding/decoding function can be completed by the Integrated HD video accelerator, thus optimizing the system performance.

At the same time, TI has made some attempts in intelligence. Dmva1 integrates TI's first-generation visual coprocessor to provide entry-level analysis functions, such as number of people statistics, trigger areas, intelligent motion detection, camera tampering detection, and streaming media metadata. The same chip is tightly coupled with the visual coprocessor and intelligent analysis functions, thus implementing an IP camera with video analysis functions.

Dmva2 SOC is a product after dmva1. It not only doubles the Video Performance of dmva1, but also uses Ti smart codecs to reduce the bit rate by 5 times, achieve higher video quality and network bandwidth. Compared with dmva1 that supports P, dmva2 can achieve the above intelligent analysis function when the streaming media standard is as high as p.

Haisi

From hi3512, hi3515 to the latest hi3516, haisi provides a complete set of HD solutions. Taking hi3512 as an example, this solution is a high-performance communication media processor based on the arm9-processor kernel and Video hardware acceleration engine. It features high integration, programmable, and supports H. 264, MJPEG, and other multi-protocol advantages. The video processing unit can support H. 264 main profile, baseline, profile, MJPEG, JPEG, and other protocols implement codec; Support for 1.3 m
Pixels @ 30fps: supports JPEG capturing of up to 3 million pixels. The Video Processing Unit also supports dual-bitstream encoding and other functions.

The latest hi3516 solution is based on the arm cortex A9 processor kernel. In addition to the above features, it supports 16 million P @ 30fps and a maximum of pixels of JPEG capture; the Video Processing Unit also supports dual-bitstream encoding and other functions. In addition, it also adds RGB Bayer format input, which can be directly connected to more image sensors, and added CVBS output, which can provide HDMI or SDK extended output. Intelligent integration of the Intelligent Analysis Acceleration Engine, supports intelligent motion detection, perimeter protection, face detection, video diagnosis and other intelligent analysis applications.

Anba

Anba a5s Network Camera chip uses 528 MHz arm11 processor, with DSP subsystem for ISP and H. 264/MJPEG encoding/decoding, supporting full HD 1080p30 H. 264 encoding, and integrated with professional processing 240 mpixel/s image processing functions. Its Image Processing Engine includes enhanced noise reduction processing, image enhancement filtering, and electronic Anti-jitter technologies. Front-end sensors support aptina mt9m033 (1.3 mp wdr), aptina mt9j003 (10 mp), omnivision ov2715 (2 MP), and Sony imx036 (3 MP. In addition, this SOC solution is based on 45nm
In the CMOS process, the power consumption is less than 1 W (including the power consumption of DDR) in the 1080p @ 30fps working state ).

XP (N x P)

The Single-Chip Solution of asc8850 released by NXP supports the functions of most IP cameras. It integrates the video compression function and implements complete video image control and network transmission. The asc8850 is based on arm9277. it integrates hardware modules and supports H. 264 1080 p 30fps encoding and MJPEG 1080 p 40fps encoding among other streaming media formats, it also supports complete image processing functions (lens optical distortion correction, tone ing, automatic focus, automatic white balance, and automatic exposure ). With the combination of sensors, the asc8850 can also achieve high video quality in low-light conditions, because the chip supports high-resolution tone ing, which can automatically adjust the exposure and realize Pixel combination.