Communications: electrical – Systems – Signal box type
Reexamination Certificate
2006-07-18
2006-07-18
Tweel, Jr., John (Department: 2636)
Communications: electrical
Systems
Signal box type
C340S331000, C340S518000, C315S24100S
Reexamination Certificate
active
07079011
ABSTRACT:
An apparatus and concomitant method of reducing the number of synchronization pulses transmitted to the alarm units for increasing the reliability of the overall alarm system is disclosed. The synchronization signal is implemented as a reference or reset signal from which the alarm units derive a reference time to begin activation of the alarm units. Thus, when an alarm unit receives a reference synchronization pulse, the alarm unit applies the reference synchronization pulse as a reference point in time to trigger a series of flashes or audio tones. A second signal sent in close proximity to the synchronization signal is implemented to trigger a second function of the alarm units, such as a silence function.
REFERENCES:
patent: 4988889 (1991-01-01), Oughton, Jr.
patent: 5608375 (1997-03-01), Kosich
patent: 5673030 (1997-09-01), Kosich
patent: 5751210 (1998-05-01), Kosich
patent: 5982275 (1999-11-01), Kosich
patent: 6194994 (2001-02-01), Curran et al.
patent: 6311021 (2001-10-01), Kosich
patent: 6369696 (2002-04-01), Curran et al.
patent: 6583718 (2003-06-01), Curran et al.
patent: 6906616 (2005-06-01), Curran et al.
Curran John W.
Kosich Joseph
Patterson & Sheridan L.L.P.
Tong, Esq. Kin-Wah
Tweel , Jr. John
Wheelock Inc.
LandOfFree
Apparatus and method for synchronizing visual/audible alarm... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for synchronizing visual/audible alarm..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for synchronizing visual/audible alarm... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3591501