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System and method for multiple timing masters in a network

  • US 8,761,035 B2
  • Filed: 08/20/2010
  • Issued: 06/24/2014
  • Est. Priority Date: 08/21/2009
  • Status: Active Grant
First Claim
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1. A network node configured as a timing master in a ring bus network, the network node including:

  • a first communication port configured for generating at least one frame comprising at least a preamble, a data field, and a time count field containing time count information, and for transmitting said at least one frame onto the ring bus network;

    a second communication port configured for receiving said at least one frame, comparing a received time count field with said time count field generated by the first communication port, and signaling the presence of at least another timing master on the ring bus network, if the compared time count fields are not equal; and

    wherein a propagation delay associated with the at least one frame traveling around the ring bus network is less than a length of said frame, so that the second communication port receives at least parts of said frame while the first communication port is transmitting said frame.

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