Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent
1991-11-01
1993-10-05
Dwyer, James L.
Telephonic communications
Telephone line or system combined with diverse electrical...
To produce visual-graphic copy
379102, 379110, H04M 1100, H04M 1108
Patent
active
052512533
ABSTRACT:
An alert system and apparatus interrupts operation of sound producing entertainment devices and initiates an alerting device in connection with attracting the attention of hearing impaired persons. The present invention includes an input circuit connected to external actuators such as a doorbell, telephone, auxiliary alerting switches, etc., that externally and temporarily control the continuing operation of devices such as a radio, television, stereo, and actuates alert devices such as an audible device or light. Operably disposed between the input actuators and the external alerting devices is an electronic system consisting of interruption networks, consisting of isolated input processors, isolated time delays, and electronic gated controller with amplification, and a switching network to control the external alerting devices. When applicable, circuit isolation and rectifier networks intercouple between the external actuator inputs and time delays.
REFERENCES:
patent: 4243973 (1981-01-01), Sandidge
patent: 4425477 (1984-01-01), Magil
patent: 4467144 (1984-08-01), Wilkerson et al.
patent: 4653087 (1987-03-01), Galich
patent: 4805206 (1989-02-01), Beom-Chae
Dwyer James L.
Woo Stella L.
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