Analog "blue" signal detector
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United States of America Patent
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Jun 16, 1992
Issued Date -
N/A
app pub date -
Jul 20, 1989
filing date -
Jun 10, 1987
priority date (Note) -
Expired
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Abstract
An analog 'blue' signal detector detects when the amplitude of a spectral component of an input signal associated with a blue signal exceeds a given level for a predetermined period of time to provide an indication that the blue signal is present. When the blue signal is removed, the indication is rapidly removed also.
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