Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-01-10
2006-01-10
Porta, David (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C340S555000, C318S264000
Reexamination Certificate
active
06984818
ABSTRACT:
System and method for detecting the presence of an object in an aperture in which an electromagnetic pulse is directed from an edge of a frame defining the aperture and electromagnetic waves reflected from an opposite edge of the frame are received at substantially the same location. A time of flight between the emission of the electromagnetic pulse and the reception of the reflected electromagnetic waves is measured. The presence of an obstacle in the aperture causes a variation in the time of flight from a reference time of flight in a situation where an obstacle is not present in the aperture. The system and method can be used in vehicles to determine the presence of obstacles in the path of a closing window, door, trunk lid, convertible top, or sunroof.
REFERENCES:
patent: 4114146 (1978-09-01), Inoue et al.
patent: 5291202 (1994-03-01), McClintock
patent: 5589838 (1996-12-01), McEwan
patent: 6031600 (2000-02-01), Winner et al.
patent: 6157024 (2000-12-01), Chapdelaine et al.
patent: 6236035 (2001-05-01), Saar et al.
Breed David S.
DuVall Wilbur E.
Johnson Wendell C.
Automotive Technologies International Inc.
Porta David
Roffe Brian
Sohn Seung C.
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