Automatic detection of microphone sabotage in a security...

Details Automatic detection of microphone sabotage in a security... Automatic detection of microphone sabotage in a security...

2006-05-10

2008-10-28

Mullen, Jr., Thomas J (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S511000, C340S540000, C340S566000

Reexamination Certificate

active

07443289

ABSTRACT:
The present invention automatically detects the sabotage of an audio transducer such as a microphone in a security system device. An audio transducer generates an electrical signal, which is analyzed to determine if the electrical signal exhibits a predetermined sabotage characteristic. If the electrical signal does exhibit a predetermined sabotage characteristic, then an alarm device trouble signal is transmitted to an alarm control panel for further processing. If, however, the electrical signal does not exhibit a predetermined sabotage characteristic, then the electrical signal is analyzed to determine if the electrical signal exhibits a predetermined alarm characteristic. If the electrical signal does exhibit a predetermined alarm characteristic, then an alarm signal is transmitted to the alarm control panel for further processing.

REFERENCES:
patent: 4654642 (1987-03-01), Groff
patent: 5515029 (1996-05-01), Zhevelev et al.
patent: 5812054 (1998-09-01), Cohen
patent: 6229455 (2001-05-01), Yost et al.
patent: 2003/0080867 (2003-05-01), Simon
patent: 2005/0265571 (2005-12-01), Smith et al.

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