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Method and system for communicating between remote-controlled modules in automotive vehicles

  • US 6,275,167 B1
  • Filed: 06/08/1998
  • Issued: 08/14/2001
  • Est. Priority Date: 06/08/1998
  • Status: Expired due to Fees
First Claim
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1. A method for transferring pulse messages between remote-controlled modules in an automotive vehicle having a single wire bus coupled to each of the modules for transferring the pulse messages between each of the modules, at least two of the modules including a receiver circuit for receiving the pulse messages and at least one of the modules including a transmitter circuit for transmitting the pulse messages, the method comprising:

  • providing an impedance associated with each receiver circuit sufficient to pull the bus up to a voltage source by an equal amount to obtain a bus voltage, and a communication current on the bus from the voltage source;

    transmitting the pulse messages utilizing the communication current, wherein the pulse causes the bus voltage to decrease by a first predetermined voltage drop; and

    receiving the pulse messages upon detecting the communication current being drawn from the receiver circuits.

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