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METHOD AND APPARATUS FOR DETECTING AND ISOLATING CONTROLLER AREA NETWORK PERMANENT DOMINANT STATES

  • US 20090106606A1
  • Filed: 10/17/2007
  • Published: 04/23/2009
  • Est. Priority Date: 10/17/2007
  • Status: Abandoned Application
First Claim
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1. A controller area network node comprises:

  • a controller area network protocol engine having a transmit output assuming dominant and recessive states;

    a controller area network transceiver having a transmit input for receiving the transmit output;

    a clock;

    a shift register connected to be clocked by the clock and further connected to the transmit output for storing uninterrupted sequences of states of the transmit output; and

    a logic array coupled to the shift register for comparing the states stored thereon for a specific pattern among the stored uninterrupted sequences of states indicative of a node fault.

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