Digital delay line tester

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4604588
SERIAL NO

06711058

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention describes a tester for determining the value of unknown delay lines in the nanosecond and subnanosecond range. The unknown delay line is introduced into the circuit loop of a free-running square wave oscillator previously calibrated to a predetermined frequency. A change in oscillator frequency occurs which is a measure of the value of the delay introduced into the loop by the unknown line. Such delay may be calculated as a function of the calibration and delay line-measured frequencies. The present tester provides measurements with increased accuracy and rapidity over previous measuring techniques.

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Patent Owner(s)

Patent OwnerAddress
UNISYS CORPORATION801 LAKEVIEW DRIVE MAILSTOP 2NW SUITE 100 BLUE BELL PA 19424

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lacher, William A Lansdale, PA 5 151
Webler, Thomas N West Chester, PA 1 4

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