Page 19 - EngineerIT November 2021

AUTOMOTIVE ELECTRONICS

occupant sensing, or even on the back of the Table 1: Technology Comparison
front seats for video conferencing. The cost
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of the coax connectors makes HD camera Feature/Technology NTSC C B LVDS
connectivity prohibitively expensive for entry High Speed Backchannel ✘ ✓ ✓
to mid-end vehicles.
HD Resolution ✘ ✓ ✓
C B enables a leading technology solution Low Cost Harness ✓ ✓ ✘
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An alternative option is to use a technology
specifically designed to address these
automotive challenges. Car Camera Bus (C B) to realize HD camera resolution in entry and mid-level vehicles.
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is an automotive HD camera link technology C B is an elegant solution for the automotive industry, providing the best HD camera
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with indistinguishable performance to LVDS performance at a system cost that’s sustainable for the mass market. C B offers the opportunity to
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interfaces. C B enables HD performance over implement camera systems to all cars and allows for the implementation of safety critical systems
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a low cost UTP cable harness, eliminating to the benefit of all traffic participants. For more information on C B technology, visit analog.com/
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the need for expensive coax connectors. C2B, analog.com/ADV7992, analog.com/ADV7382, or analog.com/ADV7383. n
C B can utilise block connectors in the
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wiring harness to enable a very low harness For more information on Analog Devices contact Conrad Coetzee at ccoetzee@arrow.altech.co.za
cost. Additionally, automotive OEMs are
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using the C B video interface over their References
existing UTP cable harnesses to reduce 1. “Sensing and Computing for ADAS Vehicle 2020.” Yole Développement, 2020.
costs when transitioning from SD cameras 2. “UN Regulation on Automated Lane Keeping Systems Is Milestone for Safe Introduction of
to HD cameras. Optimised video encoding, Automated Vehicles in Traffic.” UNECE, June 2020.
differential signalling and internal filtering 3. “2020 Assisted Driving Tests: What’s New for 2020?” Euro NCAP, 2020.
ensure C B delivers the most robust EMC 4. Andrew Edgecliffe-Johnson, Peggy Hollinger, Joe Rennison, and Robert Smith. “Will the
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performance on UTP infrastructure, including Coronavirus Trigger a Corporate Debt Crisis?” Financial Times, March 2020.
conformance to 200 mA BCI testing. A high 5. Pandey, Anchal. “US NTSB Recommends Driver Monitoring.” PathPartner, July 2020.
speed backchannel over the same twisted
pair enables remote control of the C B About the Author
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camera from the ECU. The backchannel Paul Slattery is a strategic marketing manager with the Automotive Connectivity and Sensing
allows manufacturers to optimize camera Group at Analog Devices. Paul worked in applications and product engineering before joining
performance based on lighting conditions - a the marketing team in 2016. Paul has in-depth knowledge of automotive connectivity solutions
clear improvement over NTSC cameras. C B’s and helped define the C B portfolio of products. Paul received his B.Eng. degree and an M.B.A.
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lower system cost allows automotive OEMs from the University of Limerick, Ireland. He can be contacted at paul.slattery@analog.com.

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