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Method and system for duplicate check detection

  • US 8,639,017 B1
  • Filed: 09/14/2012
  • Issued: 01/28/2014
  • Est. Priority Date: 10/20/2008
  • Status: Active Grant
First Claim
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1. A system for detecting duplicate checks, comprising:

  • at least one processor;

    a memory comprising computer-readable instructions which when executed by the processor cause the processor to perform the steps comprising;

    receiving check data that comprises check accounting data associated with one or more checks;

    processing the check data to extract the check accounting data;

    creating a character string from a subset of the check accounting data for each of the one or more checks;

    applying a Bloom filter using four hash functions to the character string such that four single bit hash value addresses are computed;

    determining that a check is a potential suspected duplicate the four bits values addressed by the four single bit hash value addresses being equal to a first value;

    outputting a listing of each potential suspected duplicate; and

    performing additional processing on each potential suspected duplicate to determine if the potential suspected duplicate is a true suspected duplicate.

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