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Digital signal processing method and apparatus including a graphic template display

  • US 5,337,403 A
  • Filed: 09/18/1991
  • Issued: 08/09/1994
  • Est. Priority Date: 09/18/1991
  • Status: Expired due to Term
First Claim
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1. Signal processing and display apparatus for monitoring repetitive signal pulses appearing in a stream of data, comprising:

  • signal acquisition means for detecting and digitizing said repetitive signal pulse to form digitized signal pulse data;

    buffer means for temporarily storing said digitized signal pulse data;

    template memory means for storing template data corresponding to a template in the form of a mask of one data state having a window area therein of a second data state, the borders of the window area defining acceptable tolerance limits for certain characteristics of said repetitive signal pulses;

    display memory means;

    image formatting said bit mapping means for retrieving said template data from said template memory means and for extracting said digitized signal pulse data from said buffer means, for bit mapping said template data and said digitized signal pulse data into a predetermined pixel array format, and for causing the bit mapped template data and bit mapped digitized signal pulse data to be stored in said display memory means; and

    display means for reading out the bit mapped template data and bit mapped digitized signal pulse data stored in said display memory means and for displaying the bit mapped template data and the bit mapped digitized signal pulse data in overlapping alignment to indicate the relationship between said repetitive signal pulses and said template.

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