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Time multiplex system for transmitting information between vehicle components

  • US 4,780,620 A
  • Filed: 06/23/1987
  • Issued: 10/25/1988
  • Est. Priority Date: 05/07/1987
  • Status: Expired due to Fees
First Claim
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1. A system for time multiplex transmission of information between a plurality of vehicle components, comprising:

  • a bus having a first bus line and a second bus line;

    a synchronizing unit, coupled to said bus, includingmeans for generating a plurality of control signals on said second bus line, for defining a plurality of time slots on the bus, when said synchronizing unit is in a synchronizing unit active state,means for disabling said generating means from generating at least some of said plurality of control signals when said synchronizing unit is in a synchronizing unit standby state, andmeans for placing said synchronizing unit in said synchronizing unit active state in response to a signal on said first bus line;

    a first transmission unit, coupled to said bus, including means for transferring information in at least one direction between the first bus line and a vehicle component in a first active state assumed in response to receipt of predetermined control signals from said synchronizing unit; and

    a second transmission unit, coupled to said bus, includingmeans for transferring information in at least one direction between the first bus line and a vehicle equipment in a second active state assumed in response to receipt of information signals in at least one predetermined time slot on the first bus line, andmeans for causing said second transmission unit to assume a standby state in response to an absence of information signals in at least one predetermined time slot on the first bus line.

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