Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 21, 2015
0Patent Application Number
141734450
Date Filed
February 5, 2014
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An apparatus and method for detecting a pattern warning signal from a hazard alarm. In one embodiment, a buffer memory is used to store filtered, digitized information from an audio or optical detection device. A processor evaluates the information in the buffer memory to determine when a long lull time occurs between energy peaks present in a sampling of information from the analog-to-digital converter. The results are compared to at least one temporal pattern characteristic to determine if the hazard alarm has detected a hazardous condition.
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