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Source packet bridge

  • US 8,275,910 B1
  • Filed: 07/02/2003
  • Issued: 09/25/2012
  • Est. Priority Date: 07/02/2003
  • Status: Active Grant
First Claim
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1. A method of implementing a source packet bridge on a network of nodes, comprising:

  • providing a node having a first port, the first port having a first time base, a second port, the second port connected to a second bus having a second time base, and an internal interface between the first port and the second port, wherein the first port is connected to a first bus, the first bus having a first cycletimer value, and wherein the second port is connected to a second bus, the second bus having a second cycletimer value that has a time base different than that of the first cycletimer value;

    receiving a data stream containing a first set of packets over the first port and extracting a timestamp from a packet, wherein each packet of said first set of packets comprises a plurality of data blocks;

    dynamically evaluating a difference between the first cycletimer value and the second cycletimer value;

    adjusting the timestamp by adding to it said difference and a latency value;

    said latency value being greater than or equal to a predetermined delay value;

    said delay value calculated with respect to said second time base;

    accumulating data blocks from said first set of packets within an internal (first in first out) FIFO;

    packetizing and transmitting a second set of packets over the second port, said second set of packets comprising data blocks retrieved from the internal FIFO; and

    wherein the internal FIFO enables packing of a first packet of the second set of packets with data blocks accumulated over a plurality of the first set of packets.

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