Method, apparatus and computer program product for ring network communication
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United States of America Patent
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Jun 12, 2012
Grant Date -
May 14, 2009
app pub date -
Nov 11, 2008
filing date -
Nov 11, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Communication modules are coupled in a communication ring and are operable to send and receive data from peripheral devices. The modules are operable to send and receive data streams on paths of the ring, and each module is operable, responsive to receiving a predetermined initialization signal, to operate as a master for initially blocking data in the first path and initially sending a block signal to a neighboring module downstream in the second path. The modules are operable, responsive to receiving the block signal in one of the paths, to block data in that one of the paths, so that responsive to initialization of one of the modules as a master, the master and the neighboring module create an inactive virtual link therebetween in order to prevent data from propagating around the ring more than once.
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