Smoke detecting method and device

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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C340S575000, C340S577000, C340S578000, C340S584000, C340S600000, C348S135000, C348S169000, C348S226100, C382S100000, C382S103000, C382S107000, C382S190000

Reexamination Certificate

active

07859419

ABSTRACT:
A smoke detecting method and device are provided. The smoke detecting method and device capture a plurality of images; determine one of the plurality of images as an analyzable image when the one of the plurality of images is identified to have a moving object; analyze a chrominance variation of the analyzable image; analyze at least one of an edge blur and a flickering frequency of the analyzable image; compare at least one of analyzed results from the analyzing steps with a corresponding predetermined feature; and determine the moving object is a smoke when at least one of the analyzed results conforms to the corresponding predetermined feature.

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