Audiovisual signaling device and method
US4967177A · kind A · utility
21Cited by
9References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Sep 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An audiovisual signaling device includes in electrical connection: (a) an auditory output portion which produces an auditory output and a corresponding low voltage oscillatory signal; (b) a converter portion which is responsive to and converts the low voltage oscillatory signal to a repetitively produced corresponding high voltage intermittent spike signal; (c) a visual output portion which produces a visual output; and (d) a portion responsive to the high voltage intermittent spike signal to repetitively activate the visual output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.