Method and system for providing redundancy in railroad communication equipment
First Claim
Patent Images
1. A method comprising:
- encoding first safety data within media access information in a message using a first processor, the message including the media access information and application information, the first safety data generated by a first switch that is controlled by an operator control unit;
encoding second safety data within application information of the message using a second processor, the second safety data being redundant of the first safety data and generated by a second switch that is controlled by the operator control unit;
transmitting the message over a wireless communications link;
receiving the message and extracting the first safety data at a first receiver;
receiving the message and extracting the second safety data at a second receiver;
communicating the first safety data over a first data path to a first device that is responsive to the first receiver for responding to the first safety data; and
communicating the second safety data over a parallel, second data path to a second device that is responsive to the second receiver for responding to the second safety data.
2 Assignments
0 Petitions
Accused Products
Abstract
A railway communication system (10) includes a transmitter (12) receiving an input and producing a communication signal (18). The communication signal (18) includes at least two different portions (20,22) for separately encoding respective indications (38,40) of the input. The system also includes a receiver (14) coupled to a controlled device, the receiver (14) extracting at least one of the respective indications (38,40) from the communication signal (18). The receiver controls the device responsive to the at least one extracted indications (38,40).
38 Citations
12 Claims
-
1. A method comprising:
-
encoding first safety data within media access information in a message using a first processor, the message including the media access information and application information, the first safety data generated by a first switch that is controlled by an operator control unit; encoding second safety data within application information of the message using a second processor, the second safety data being redundant of the first safety data and generated by a second switch that is controlled by the operator control unit; transmitting the message over a wireless communications link; receiving the message and extracting the first safety data at a first receiver; receiving the message and extracting the second safety data at a second receiver; communicating the first safety data over a first data path to a first device that is responsive to the first receiver for responding to the first safety data; and communicating the second safety data over a parallel, second data path to a second device that is responsive to the second receiver for responding to the second safety data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification