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Time-division multiplex communications control system

  • US 4,630,263 A
  • Filed: 07/07/1983
  • Issued: 12/16/1986
  • Est. Priority Date: 07/07/1983
  • Status: Expired due to Term
First Claim
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1. A communications control center system for bi-directional audio and data transfer on a TDM bus coupled between a plurality of nodes comprising:

  • (a) means for receiving analog audio signals from each of a plurality of sources coupled to the respective nodes, said receiving means including means for converting said analog audio signal to a digital audio signal;

    (b) time-division multiplex means coupled to each of the respective nodes for sending said digital audio signals to designated sources and for defining recurrent time slots with one of said recurrent time slots corresponding to each of the respective nodes and at least one recurrent time slot being uniquely dedicated for data transfer between each of the respective nodes;

    (c) outputting means at each of said respective nodes coupled to said time-division multiplex means for removing said digital audio signal from said time slot and means for converting said digital audio signal to analog audio signal; and

    (d) means for controlling data transfer on said dedicated data slot, wherein said means for controlling data transfer on said dedicated data slot including means for sequentially polling the plurality of nodes, means for receiving a data request signal from a requesting node, means for granting control of said dedicated slot and means for simultaneously disabling said means for sequentially polling for a predetermined period of time, means for enabling said means for sequentially polling at the next slot following said requesting node whereby each of the nodes is provided equal access to said dedicated data slot.

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