System for monitoring an environment

Communications: electrical – Condition responsive indicating system – With particular coupling link

Reexamination Certificate

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Details

C340S693900, C340S545100, C340S545600, C340S545900, C340S547000, C340S686100

Reexamination Certificate

active

07132941

ABSTRACT:
A system for monitoring an environment comprises a plurality of sensors, each sensor generating respective events in response to activity in the environment. A processor is in operative association with the sensors, and at least one stored set of linked events are accessible to the processor. The processor is responsive to an event being generated by a sensor to determine whether the event is in a sequence of events corresponding to a stored set of linked events and to generate an alarm accordingly.

REFERENCES:
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patent: 5225806 (1993-07-01), Stanley-Arslanok et al.
patent: 6057764 (2000-05-01), Williams
patent: 6411209 (2002-06-01), Lyons et al.
patent: 6472993 (2002-10-01), Addy
patent: 6658091 (2003-12-01), Naidoo et al.
patent: 1 071 055 (2004-12-01), None
patent: 2 194 089 (1988-02-01), None

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