Audio visual monitoring system for announcing a message upon det

Details Audio visual monitoring system for announcing a message upon det Audio visual monitoring system for announcing a message upon det

1979-05-29

1981-06-23

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

Control by timer or external extraneous condition

By diverse art device

340692, 360 12, G11B 1502, G11B 3100

Patent

active

042752744

ABSTRACT:
An audio-visual communicating system which comprises an illuminated sign containing printed information and including a plurality of recorded messages on a recording device, and which recording device is selectively activated by one or more detectors each monitoring a specific condition whereby an audio message corresponding to the sensed circuit is sounded. The system includes a circuit containing a primary source of electrical power and a secondary source of electrical power, the latter being in the form of a rechargeable battery and a charging circuit for maintaining a charge on the battery. The arrangement is such that the system is rendered operative whether or not there has been a failure of the primary power source.

REFERENCES:
patent: 3205482 (1965-09-01), Taylor et al.
patent: 3209324 (1965-09-01), Diamond et al.
patent: 3310793 (1967-03-01), Takarabe et al.
patent: 3582949 (1971-06-01), Forst
patent: 3879704 (1975-04-01), Noji
patent: 4100581 (1978-07-01), Slack et al.

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