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Quiet bus for the busing of analog and digital data

  • US 5,287,291 A
  • Filed: 09/03/1991
  • Issued: 02/15/1994
  • Est. Priority Date: 09/03/1991
  • Status: Expired due to Fees
First Claim
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1. Testing apparatus for performing non-destructive testing of an object to determine if it has flaws or defects comprising:

  • wave means for generating an ultrasonic wave, for directing the wave at the object, for receiving a return wave reflected by the object, and for analyzing the return wave to determine if a flaw or defect is present in the object;

    means for converting the return wave to a digital data signal for analysis;

    bus means over which the digital data signal is routed, and,control means for controlling the routing of digital data signals over the bus means, the control means inhibiting flow of digital signals over the bus means during that portion of an operational cycle of the apparatus during which the wave means is operating, and allowing transmission of digital signals over the bus means when the wave means is not operating, wherein the ultrasonic portion of the apparatus is effectively isolated from the bus means to prevent digital noise from effecting test information developed by the ultrasonic portion.

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