Communications: electrical – Tactual indication – With input means
Patent
1987-06-18
1989-08-01
Brigance, Gerald L.
Communications: electrical
Tactual indication
With input means
G08B 300
Patent
active
048536741
ABSTRACT:
A system for hearing impaired persons for nonaudibly signalling the occurrence of monitored events such as an audible event (e.g. a baby crying), a telephone line signal, a switch closure, or a transducer output. The system includes a receiver module for producing a nonaudible signal responsive to an RF signal command, modulated by both a common and an identification frequency tone, received from one or more transmitter modules, each monitoring a predetermined set of events. The receiver and transmitter modules are configured to consume sufficiently low electric power to enable them to be battery energized. Battery energization permits the receiver module to be packaged in a pocket sized portable unit which the hearing impaired person can carry with him in his normal daytime activities.
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Brigance Gerald L.
Hjerpe Richard
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