Communications: electrical – Aircraft alarm or indicating systems
Reexamination Certificate
2006-07-25
2006-07-25
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Aircraft alarm or indicating systems
C340S573100, C340S573400, C340S572100, C340S426120
Reexamination Certificate
active
07081836
ABSTRACT:
A method of covertly detecting and reporting a distress condition in a control cabin of a vehicle, the cabin having designated areas expected to be occupied by respective operators under normal operating conditions of the vehicle. The method comprises (a) attaching to each operator a transponder tag configured to wirelessly transmit a response signal, unique to the operator to which it is attached, responsive to an interrogator signal; (b) wirelessly transmitting interrogator signals into the designated areas; (c) attempting to detect response signals, if any, from the transponder tags; and (d) if all of the response signals are concurrently not detected, then wirelessly transmitting a distress signal from the vehicle.
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Fasulo, II Albert J.
Hofsass Jeffery
Lau Hoi C.
The Johns Hopkins University
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