Intra-train radio communication system

Details Intra-train radio communication system Intra-train radio communication system

1996-11-13

1998-02-24

Morano, S. Joseph

Railway switches and signals

Cab signal or train control

Motive-power control

340902, B60L 2300

Patent

active

057204551

ABSTRACT:
A radio-based system for a train including a lead transceiver unit and multiple remote transceiver units. The lead transceiver unit initiates a command by sending a command message. Each of the remote transceivers receiving the command message transmits a reply message which repeats the command message and contains the status of the sending remote. Remote transceivers not receiving the lead transceiver's transmitted command message, but receiving a reply message from one of the other remote transceivers, transmit a reply message containing the remote's status. The lead transceiver detects whether reply messages are received from the remote transceivers and may transmit a request in response. One or more remote transceivers may store and re-transmit reply messages from other transceivers in response to the request.

REFERENCES:
patent: 3696758 (1972-10-01), Godinez, Jr.
patent: 4344364 (1982-08-01), Nickles et al.
patent: 4582280 (1986-04-01), Nichols et al.
patent: 5039038 (1991-08-01), Nichols et al.
patent: 5570284 (1996-10-01), Roselli et al.

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