Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Railway vehicle
Reexamination Certificate
2005-10-18
2005-10-18
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Railway vehicle
C701S020000
Reexamination Certificate
active
06957131
ABSTRACT:
A positive signal comparator system includes a transceiver located on a train for transmitting an interrogation signal to a wayside signal device and receiving a response signal from the wayside signal device, an input device through which an operator enters a signal in response to the signal received from the wayside signal device, and a controller including a signal comparator for determining if the signal input by the operator matches the signal received from the wayside signal device and taking corrective action if the operator fails to enter the proper signal. In some embodiments, the corrective action comprises activating a warning device and/or activating the train's brakes. In some embodiments, the invention further comprises a display for displaying the signal received from the wayside signal generator to the operator.
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Hickenlooper Harrison Thomas
Kane Mark Edward
Shockley James Francis
DLA Piper Rudnick Gray Cary US LLP
Quantum Engineering Inc.
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