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Two-line mixed analog/digital bus system and a master station and a slave station for use in such system

  • US 5,604,918 A
  • Filed: 06/03/1994
  • Issued: 02/18/1997
  • Est. Priority Date: 06/04/1993
  • Status: Expired due to Term
First Claim
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1. A two-wire multi-station bus system comprising:

  • a clock wire and a data wire;

    at least one slave station, each slave station having a slave clock terminal connected to the clock wire and a slave data terminal connected to the data wire, address recognition means for recognizing a digital slave address pertaining to an associated slave station, and analog data generating means connected to the slave data terminal;

    at least one master station having a master clock terminal connected to the clock wire and a master data terminal connected to the data wire, clock signal generating means and clock signal control means connected to the master clock terminal, and digital address generating means and analog signal receiving means connected to the master station data terminal;

    said master station having master station control means for generating said digital slave address under synchronization by clock signals generated on said master clock terminal, followed by a finite interval of time wherein said clock signal control means control a binary hold signal on said clock wire, while enabling said analog signal receiving means; and

    said slave station having slave station control means for, under control of said digital slave address received on said slave station terminal and said binary hold signal received on said slave station clock terminal, enabling said analog data generating means until detecting termination of said finite interval as represented by said binary hold signal.

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