Cars with real-time 360 degree surround view will now assist in improving driver safety. Renesas has recently unveiled its latest system-on-chip (SoC) called R-Car T2, an SoC dedicated for Ethernet AVB (audio video bridging) – enabled vehicle camera networks.
Complementing its popular R-Car Family devices (infotainment, instrument cluster and ADAS applications), the new R-Car T2 enables the delivery of high-resolution camera video through multiple systems while maintaining real-time performance with low latency levels, as mentioned in the news release.
According to the press release, “The R-Car T2 supports multiple standards, including IEEE 802.1AS (timing and synchronisation), IEEE802.1Qav (audio video), IEEE802.1Qat (bandwidth), and IEEE1722 (interoperable streaming) standards. The R-Car T2 SoC features a built-in H.264 encoder developed exclusively by Renesas to provide low-latency compression while maintaining real-time high-quality HD video (1280 × 960) transfer. Video can be compressed with extremely low latency of less than 1 msec (one-thousandth of a second) and delivered to multiple systems through the networks to vehicle systems.”
Referring to the press release, the mass production of the R-Car T2 is scheduled to begin in December 2016 and is expected to reach a volume of 500,000 units per month by September 2017, though the samples are readily available for testing requirements.
The key features of the R-Car T2 SoC are as highlighted below:
- Compliant with four Ethernet AVB standards for enabling vehicle camera video sharing among multiple displays: Previously, in camera systems adopting analog or LVDS signal transfer, the video processing was concentrated peer-to-peer in a single processing device such as a navigation system or a meter cluster. With Ethernet AVB, however, video signals from multiple cameras can be distributed in parallel to multiple processing devices. This means that video from the cameras can be utilised by multiple displays and driver assist systems, among others. It also enables the camera networks to be configured flexibly for different vehicle grades or option packages, for example, by increasing the number of cameras or adding displays. Additionally, the Ethernet AVB standard also supports the use of Power over Ethernet (PoE), in which power is supplied over transmission lines. This reduces or eliminates the need for separate power supplies or dedicated cables for individual modules.
- Low-latency transfer of high-quality HD video that contributes to increasing the value of the car by video recognition: Developed exclusively by Renesas, the built-in ultra-low-latency H.264 encoder has adopted the Ethernet AVB standard with excellent real-time transfer of digital HD signals. The improved camera quality enhances visibility and aids in driver oversight prevention. For example, the real-time performance meets the safety requirements for driver assist systems that detect pedestrians and obstacles.
- Ultra-low power consumption and small-size form factor for more power-efficient and compact camera modules: The R-Car T2 features power consumption as low as 40 mW (typ.), which reduces heat concerns for a sealed camera module designed to keep out moisture and dust. In addition, at 6mm square in size, the small form factor fits in camera modules designed to take up minimal space and contributes to flexible design.