Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1980-11-03
1982-12-21
Groody, James J.
Communications: electrical
Condition responsive indicating system
With particular system function
340310CP, 34082551, 340332, 340519, 367197, 367198, 340310A, H04B 354, G01K 1100
Patent
active
043652387
ABSTRACT:
An apparatus for visually signalling hearing impaired persons of the occurrence of an audible sound producing event. A plurality of sensing devices are individually located adjacent to a sound producing device, such as a telephone, doorbell, fire detector, etc., to sense the audible sounds produced by the activation of such devices. The output signals from the sensing devices are arranged in a predetermined priority ranking to enable a more important event to take precedence over an already occurring less important event. A sensing device transmits a signal to a central logic unit indicating the activation of one of the sound producing devices. The central logic unit identifies which sensing device sent the signal and transmits a predetermined sequence of output pulses associated with the particular activated device to a plurality of control modules. The control modules are each associated with an illuminating device, such as a light, and turn the associated light on and off in a predetermined sequence according to the received output pulses from the central logic unit to signal the hearing impaired person which sound producing event has taken place.
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