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US 5,966,074 AGranted
Intruder alarm with trajectory display
OwnerKeith M. Baxterinventor
Life of this patent
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Abstract
Image data obtained from cameras or the like of a monitored are abstracted into a set of trajectories which may be displayed and used for referencing images or activating alarms based on trajectory location, angle or speed.
Claims14
An intruder alarm for a monitored area comprising:
- (a) at least one optical sensor providing a plurality of signals indicating received light at different angles across the monitored area;
- (b) a display screen;
- and
- (c) an electronic computer receiving the plurality of presence signals and their angles and communicating with the display screen to operate according to a stored program to:
- (i) detect changes in the received signals;
- (ii) relate changes in the received signals to at least one region within the monitored area;
- (iii) link the one region to other regions to describe at least one trajectories within the monitored area of an object moving within the monitored area;
- and
- (iv) display the trajectory on the display screen.
6 more elements
Dependencies are inferred from the claim text.