Aperture monitoring system and method

Details Aperture monitoring system and method Aperture monitoring system and method

2005-04-05

2005-04-05

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C340S555000, C318S262000

Reexamination Certificate

active

06875976

ABSTRACT:
System and method for detecting the presence of an object in an aperture in which for modulated electromagnetic waves are 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. The phase change between the modulated electromagnetic waves and the reflected electromagnetic waves is measured wherein the presence of an obstacle in the aperture causes a variation in the phase change from a situation where an obstacle is not present. 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.

Affiliated with

Also associated with

Rating

Aperture monitoring system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aperture monitoring system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture monitoring system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3443141