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Method and apparatus for identifying that one of a set of past or historical events best correlated with a current or recent event

  • US 4,939,683 A
  • Filed: 05/19/1989
  • Issued: 07/03/1990
  • Est. Priority Date: 05/19/1989
  • Status: Expired due to Fees
First Claim
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1. A system for generating a set of data which can be inputted to a mechanical, electromechanical, electronic, or other device to control the operation of the device, said system comprising:

  • a. an array of function comparing means for comparing by modulo two addition a function f(t) representing a current event and presented as a string of binary digits to each of a series of functions D1 f(t), D2 f(t) . . . Dk f(t) representing past or historical events and similarly presented to thereby generate a series of binary digit strings representing the series of sums (1+D1)f(t), (l+D2)f(t) . . . (l+Dk)f(t);

    b. a multiplicity of comparators arrayed in multiple levels with;

    the comparators in the first and any intermediate levels arrayed in parallel, the comparators in each level except for the first level having as inputs the outputs from an adjacent pair of comparators in the preceding level, their being a single comparator in the final level, each comparator in the first level having as inputs the outputs from two of said function comparing means which generate successive ones of said series of sums, and each said comparator comprising means for identifying and outputting that one of the two inputted string of binary digits having the greater number of excess zeros where the number of excess zeros in a sum-associated string of digits is that number of zeros which exceeds one-half of the number of digits in the string, whereby the string outputted from the comparator in the final level of the comparator array will be the string of binary digits with the largest number of excess zeros; and

    c. means for comparing the string of digits representing the function f(t) to the string of digits with largest number of excess zeros by modulo two addition and for outputting the resulting string of digits from the system.

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