Signature pulse generator and method of detecting tampering with a fueling operation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 2, 2001
Issued Date -
N/A
app pub date -
May 3, 2000
filing date -
Mar 31, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for detecting tampering with a fuel dispenser digital pulse stream during dispensing of a fuel. The method includes generating a digital pulse stream indicative of the volume and flow rate of fuel dispensed wherein the pulse stream includes an identifying pulse anomaly; storing a digital pulse stream signature in a memory device wherein the stored signature includes the identifying pulse anomaly; comparing the incoming digital pulse stream with the stored digital pulse stream; and allowing fuel delivery to continue if the incoming digital pulse stream generated by the pulse generator is substantially similar to the stored digital pulse stream signature.
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