Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2009-05-28
2011-11-29
Nguyen, Tai T (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S541000, C340S407100, C340S521000, C340S691100, C340S691600, C340S692000, C324S076310, C324S076440, C324S076550, C324S076680, C381S056000, C381S058000
Reexamination Certificate
active
08068025
ABSTRACT:
A personal alerting device and method for detecting an approaching sound source includes a sound detector for detecting environmental sounds and for providing an electrical signal to a sound analyzer. The sound signal is analyzed to determine a baseline sound pattern comprising a plurality of distinct sounds corresponding to sounds emitted from a reference sound source. The distinct sounds in the baseline sound pattern may have substantially the same amplitude and time interval. The sound signal is monitored and compared against the baseline sound pattern to determine whether a target sound pattern is present in the sound signal, the target sound pattern corresponding to sounds emitted by the approaching sound source. When it is determined that the target sound is present in the sound signal, one or more of an audible, visual and tactile alert may be emitted to provide warning of the approaching sound source.
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Clint Van Zandt, MSNBC TV Crime Analyst and Former FBI Profiler and Hostage Negotiator, Update: Chandra Levy—The Perfect Victim?, Sat Feb. 21, 2009.
Devenyi Simon Paul
Devenyi Tyler Thomas
Bereskin & Parr LLP
Caulder Isis E.
Nguyen Tai T
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