Method and apparatus for object surveillance along a transport path

  • US 6,078,678 A
  • Filed: 05/14/1999
  • Issued: 06/20/2000
  • Est. Priority Date: 11/02/1990
  • Status: Expired due to Fees
First Claim
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1. A document surveillance system for tracking a document traveling along a transport path in a document sorting system comprising:

  • a plurality of sensors, positioned in sequence along the transport path, for detecting an edge of the document;

    indicia reading mechanism, positioned along the transport path, for reading indicia located on the document;

    means, operably coupled to the plurality of sensors, for determining document status of the document as it travels along the transport path wherein the means for determining document status further comprises means for passing edge detection information between the plurality of sensors, said edge detection information comprising a unique document identifier and a representation of a position of a transport mechanism associated with said transport path.

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