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Communication system wherein a clocking signal from a controller, a request from a node, acknowledgement of the request, and data transferred from the node are all provided on different frequencies, enabling simultaneous transmission of these signals

DC CAFC
  • US 7,570,954 B2
  • Filed: 07/24/2007
  • Issued: 08/04/2009
  • Est. Priority Date: 06/24/1994
  • Status: Expired due to Fees
First Claim
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1. A method of operating a two-way communication system between a plurality of communication devices which comprise at least one communication controller including a first communication controller and a plurality of nodes including a first node, the method comprising:

  • receiving a clocking signal used to enable request signals including a first request signal from the first node, the clocking signal provided from the first communication controller;

    when the first node has a communication message to transmit, and upon receipt of the clocking signal, transmitting the first request signal from the first node to the first communication controller; and

    receiving an authorization signal at the first node from the first communication controller;

    upon receipt of the authorization signal, transmitting the communication message from the first node subsequent to receiving said authorization signal to the first communication controller;

    wherein each of the first request signal, the authorization signal, the communication message, and the clocking signal are transmitted on differing frequencies, andwherein the clocking signal further enables a second request signal to be transmitted to the first communication controller by a second node, and wherein the second request signal can be provided simultaneous with transmission of the communication message.

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