ADI ADAS Vision Solution

Application Description
In many ways, vehicle safety can be greatly enhanced by vision-based ADAS systems (advanced driver assist systems). By installing rear/front/side cameras and vision processing ECU, multiple features can be implemented to assist the driver in advance. Popular applications include LDW (lane departure warning), HB/LB (high beam/low beam adjust), TSR (traffic sign recognition), parking assist, rear view/surround view, collision avoidance, etc. For now, it is reported that 70% of vehicles have rear view options; 30% of high-end vehicles have front view options, and it is forecasted to reach 60% by 2015.


System Requirements and Design Challenges
A vision ADAS system typically includes video amplifying, encoding, transmitting, decoding, processing, and display. There is a trend toward increased camera resolution and number of cameras. There are an increasing number of functions per system, and comfort features are moving to safety features, so all of these trends increase the requirements for the processor. Meanwhile, there are always higher requirements for the power-to-cost ratio of signal processing.


Solutions from ADI
ADI’s Blackfin® processor with high performance video processing provides a well-proven solution for deployment, from single function to multiple function systems. Integrated vision preprocessors in new generation processors offload significant performance requirements. ASIL(automotive safety integrity level)features support automotive safety concepts. Optimized compilers with “image toolbox” algorithm libraries deliver the most efficient power and MIPS, and a software based structure enables customers to differentiate their end products. Altogether, ADI provides a broad range of video decoder/encoder, video multiplexer/switch, and video amplifiers with outstanding performance.


Main Signal Chain