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US Patent 7506546 Digital log amplifier for ultrasonic testing

Patent 7506546 was granted and assigned to GE Inspection Technologies, LP on March, 2009 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
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GE Inspection Technologies, LP
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
75065460
Patent Inventor Names
Scott Allen Herbster0
John Michael Cuffe0
Klaus Peter Busch0
Date of Patent
March 24, 2009
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Patent Application Number
121048710
Date Filed
April 17, 2008
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Patent Primary Examiner
Hezron Williams
Hezron Williams
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Patent abstract

The invention provides an ultrasonic object inspection system for measuring the physical properties of a test object which includes a pulse generator for sending an electrical pulse signal to a transducer. The transducer then applies an ultrasonic signal to the test object and receives an ultrasonic echo signal from the test object which is then converted by the transducer to an electrical echo signal for sending to a signal processing circuit. The signal processing circuit includes a plurality of signal processing paths with each path scaling the electrical echo signal to a different degree and including a respective analog to digital converter for converting the electrical echo signal to a digital electrical echo signal. The signal processing circuit further includes a logic circuit for selecting the output of the respective analog to digital converter that provides the digital echo signal having the greatest amplitude without exceeding a predetermined saturation threshold.

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