Vehicle collision alert system
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United States of America Patent
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Oct 11, 1994
Grant Date -
N/A
app pub date -
Jul 10, 1992
filing date -
Jul 11, 1991
priority date (Note) -
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Abstract
An apparatus for deciding an excessive approach of a vehicle to an object in front of the vehicle. The excessive approach decision apparatus comprises a normalized time rate of change detector for determining a normalized time rate of change of a visual angle for the object as viewed from the vehicle. An excessive approach is indicated based upon the determined normalized time rate.
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