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Diagnostic apparatus

  • US 4,193,393 A
  • Filed: 08/25/1977
  • Issued: 03/18/1980
  • Est. Priority Date: 08/25/1977
  • Status: Expired due to Term
First Claim
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1. A diagnostic instrument having means to receive a waveform signal and adapted to drive a display means, comprising input means for sequentially sampling said waveform signal in time spaced samples and having digitizing means for digitizing said waveform samples into a series of time spaced digital samples which uniquely represent the characteristic of such waveform, storage means connected to said input means and having address means for recording said waveform samples as the series of time spaced digital signals, a preset referenced means defining a series of selected positions on the waveform as predetermined combinations of said sampled waveform characteristics and time intervals and having an output means, and address means connecting the storage means to the referenced means and providing an encoded indication output on said output means of normality and abnormality based on the waveform combination and the preset reference, said output means adapted to be connected to said display means and provide a display of said indication output for diagnosis of said waveform.

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