×

Multiplex transmission system

  • US 5,343,475 A
  • Filed: 03/31/1992
  • Issued: 08/30/1994
  • Est. Priority Date: 04/02/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A multiplex transmission system comprising:

  • a plurality of multiplex nodes;

    a common multiplex transmission line means for interconnecting said plurality of multiplex nodes and for transmitting a frame of data among the multiplex nodes through the common multiplex transmission line;

    said multiplex nodes including means for sending out an acknowledge signal, when a data transmission of a frame of data is properly carried out, for indicating a proper completion of the data transmission, and for returning said acknowledge signal to an acknowledge signal area provided in the frame of data corresponding to the respective multiplex nodes;

    wherein the frame of data further includes a group identifier specifying more than one group of predetermined combinations of multiplex nodes from which an acknowledge signal is to be returned, and an acknowledge signal area having locations thereof assigned to said multiplex nodes from which the acknowledge signal is to be returned, the acknowledge signal area having a length which is variable depending on the group identifier;

    the multiplex nodes, which belong to a specified group specified by the group identifier, each including means for returning an acknowledge signal in accordance with the group identifier in the transmitted frame of data; and

    wherein the multiplex nodes which do not belong to the specified group do not return the acknowledge signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×