Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle
Reexamination Certificate
2008-04-15
2008-04-15
Swarthout, Brent A. (Department: 2612)
Communications: electrical
Land vehicle alarms or indicators
Of relative distance from an obstacle
C340S903000, C367S099000
Reexamination Certificate
active
07358850
ABSTRACT:
An obstacle detection method and system, particularly for car parking systems comprising emitting ultrasound signals at a plurality of sensors, receiving echo signals returned by at least one obstacle, performing a parametric evaluation of the received signals, determining, for each sensor, the distance between the sensor and an obstacle detected by it, associating with each sensor a value of the distance from the obstacle detected by it; determining a value corresponding to the minimum detected distance and replacing it with the sum value between a minimum distance and a priority threshold value; assigning to the sensor that detected the minimum distance a priority status; and defining a sensor polling cycle that polls more frequently a priority status sensor than non-prioritized sensors.
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patent: 2004/0001019 (2004-01-01), Nakazawa et al.
Browdy & Neimark
Meta System S.p.A.
Swarthout Brent A.
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