Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-12-29
2009-12-29
La, Anh V (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S531000, C340S384400, C340S286050
Reexamination Certificate
active
07639147
ABSTRACT:
A system and method to detect PASS-type device audio alarm signals and to locate such devices in alarm in a public building, airport, sports stadium or other structure which can include a system to measure speech intelligibility. Time and frequency domain analysis are carried out to establish the pressure of PASS-type device audio output signals.
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Extended European Search Report corresponding to European Patent Application No. 06256308.5, dated Sep. 19, 2007.
Berezowski Andrew G.
Heimerdinger Walter L.
Obranovich Charles R.
Phelps John A.
Shields D. Michael
Honeywell International , Inc.
Husch Blackwell Sanders Welsh & Katz
La Anh V
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