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Continental details in-car Ethernet plans

12/11/2011 10:06 PM EST
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LarryM99
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re: Continental details in-car Ethernet plans
LarryM99   12/13/2011 9:59:38 PM
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Security is an issue, but it is a complicated one. What is the threat? If they put the anti-lock brake controls on the same network as general Internet access then they are just asking for problems. The most effective security against data interception or corruption operates at higher protocol layers anyway. I'd be curious to see the overall system architecture instead of just the physical layer. larrym

zeeglen
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re: Continental details in-car Ethernet plans
zeeglen   12/13/2011 7:10:44 PM
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I'd be more concerned about the effects of CB (27 MHz) and some amateur radio bands (3.5 MHz - 54 MHz) mobile transmissions from adjacent vehicles. These frequencies are within the bandpass spectrum of 100 Mbit/s Ethernet and cannot be low-pass filtered at the receiver. Common mode chokes and good cable balance might help, but all it takes to unbalance an unshielded twisted pair cable is proximity to metal, ie the car body. Well-shielded twisted pair cable might be a better choice in this application.

Luis Sanchez
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re: Continental details in-car Ethernet plans
Luis Sanchez   12/13/2011 6:46:01 PM
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IP based communication is touching every corner of technology. It seems to have proven it posses several pro’s. I think this is one additional step towards “the internet of things” as basing the communication’s infrastructure on Ethernet will make connecting the cars to the Internet seamless. A due question is… what about security? This means that cars will only have the same amount of security that the internet has doesn’t it? And that comment about EMC, what does it mean? Before there were tougher EMC requirements and now these have been dimmed? Does this mean our cars will become more RF polluted? Mmm…

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