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Communication system using time division multiplex signal transmission

  • US 5,737,335 A
  • Filed: 11/09/1995
  • Issued: 04/07/1998
  • Est. Priority Date: 11/09/1994
  • Status: Expired due to Fees
First Claim
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1. A multiplex communication system in which a plurality of data signals are transmitted during a plurality of transmission cycles via a bus line from a plurality of node devices to at least one of a plurality of end devices, each transmission cycle being divided into a plurality of equal-length time slots, the multiplex communication system comprising:

  • means for controlling transmission of the data signals according to a necessity of transmission, wherein a first data signal having a greatest degree of transmission necessity is transmitted in a first time slot during each of the plurality of transmission cycles, while second and third data signals having a lesser degree of transmission necessity are transmitted in a second time slot in a predetermined alternating sequence such that each of the second and third data signals is always transmitted every n transmission cycles, where n is an integer greater than or equal to two;

    wherein connections between said plurality of node devices and said bus line, and connections between said plurality of end devices and said bus line are selectively switched by a plurality of change-over switches which are controlled by a control apparatus.

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