Synchronized video/audio alarm system

Details Synchronized video/audio alarm system Synchronized video/audio alarm system

1998-05-07

1999-11-09

Wu, Daniel J.

Communications: electrical

Systems

Signal box type

340331, 315200A, G08B 2500

Patent

active

059822759

ABSTRACT:
An audio/visual alarm system which includes multiple microprocessor-controlled alarm units connected in a common loop to a fire alarm control panel and an interface control circuit. The interface control circuit causes brief interruptions in power to the alarm units which synchronize operation of the alarm units and which can also be used as alarm control signals. The interface control circuit allows for control of both audio and visual alarms using only the single common loop connection between alarm units.

REFERENCES:
patent: 3488558 (1970-01-01), Grafton
patent: 3881130 (1975-04-01), Stiller
patent: 3969720 (1976-07-01), Nishino
patent: 3973168 (1976-08-01), Kearsley
patent: 4068149 (1978-01-01), Wuchnich
patent: 4101880 (1978-07-01), Haus
patent: 4162489 (1979-07-01), Thilo et al.
patent: 4216413 (1980-08-01), Plas
patent: 4389632 (1983-06-01), Seidler
patent: 4449073 (1984-05-01), Mongoven et al.
patent: 4471232 (1984-09-01), Peddie et al.
patent: 4472714 (1984-09-01), Johnson
patent: 4881058 (1989-11-01), Berry
patent: 4899131 (1990-02-01), Wilk et al.
patent: 4924149 (1990-05-01), Nishida et al.
patent: 4952906 (1990-08-01), Buyak et al.
patent: 4967177 (1990-10-01), Nguyen
patent: 5121033 (1992-06-01), Kosich
patent: 5128591 (1992-07-01), Bocan
patent: 5342069 (1994-08-01), Kosich et al.
patent: 5400009 (1995-03-01), Kosich et al.
patent: 5559492 (1996-09-01), Stewart et al.
patent: 5598139 (1997-01-01), Karim
patent: 5608375 (1997-03-01), Kosich
patent: 5659287 (1997-08-01), Donati et al.
patent: 5751210 (1998-05-01), Kosich
Wheelock Inc. Catalog, Series 30 Horns & Series 7000 Strobe Horns, 1992.
Wheelock Inc., Product Brochure, MT Series, 1993.

Affiliated with

Also associated with

Rating

Synchronized video/audio alarm system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synchronized video/audio alarm system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronized video/audio alarm system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1462018