Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1989-09-20
1991-02-05
Wallace, Linda J.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381110, 367198, 362802, 200 6101, 200DIG20, G10L 506, H03G 320
Patent
active
H00008915
ABSTRACT:
An automatic switching circuit controls operation of a light. The circuit includes a voice recognizer and a manual switch. The switching circuit turns the illuminator on instantly in response to an "ON" command input via the manual switch or via the voice recognizer. The switching circuit turns the illuminator off a predetermined period of time after detecting an "OFF" command input via said manual switch or via the voice recognizer.
REFERENCES:
patent: 3211951 (1965-10-01), Skinner et al.
patent: 3221211 (1965-11-01), Murphy et al.
patent: 4071805 (1978-01-01), Brock
patent: 4408308 (1983-10-01), Smith et al.
patent: 4630248 (1986-12-01), Scott
patent: 4797924 (1989-01-01), Schnars et al.
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