Katsushige Matsubara

4.4 A 197mW 70ms-latency full-HD 12-channel video-processing SoC for car information systems

Todays car information systems (CIS) are growing into integrated cockpit systems, supporting not solely infotainment, such as navigation and AV playing/recording, but also driver assistance, such as surround view systems. Also, in-car video transfer via Ethernet is becoming widespread. Such networks connect camera modules, head unit controllers and rear-seat display units, and carry video signals encoded in H.264 according to EthernetAVB. Thus, it is necessary for integrated cockpit systems to handle significant amounts of video processing. A key requirement for such systems is also low power consumption and thermal management for stable operation.

71% Reducing the memory bandwidth requirement for a multi-standard video codec by lossless compression of video using a combination of 2D-DPCM and Variable Length Coding

Memory bandwidth is a critical issue tor a high performance and high resolution video codec. We propose a lossless compression solution to reduce memory bandwidth requirement for a multi-standard video codec. The solution is a combination of 2D-DPCM, Variable Length Coding and 4-way set-associative cache. Experimental results show that the proposed solution can reduce the memory bandwidth requirement with 71% for reference data.