Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1975-06-20
1976-03-23
Claffy, Kathleen H.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
179 37, 179 15FD, 340182, 128 21A, H04M 1106
Patent
active
039461599
ABSTRACT:
A communication system that uses a separate single coaxial cable to link a nurse's station to each of a plurality of patient rooms is disclosed. Each cable carries DC message signals from the patient rooms to the nurse's station to alert the nurse on duty that her assistance is needed either on an emergency or on a non-emergency basis. The coaxial cables also carry AC power to power TV receivers located in the patient rooms. In addition, the coaxial cables carry normal video signals to the receiver; audio and visual communication signals between patients and the nurses station; and, telemetry from patient sensors to the nurses station. Further, the system is adapted to automatically allow a patient to view the nurse at the nurses station on the TV receiver located in the patient's room when the patient is communicating with the nurse regardless of whether or not the TV receiver was on or off at the time such communication commences.
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patent: 3786190 (1974-01-01), Pori
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Brigance Gerald L.
Claffy Kathleen H.
Vital Signs, Incorporated
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