Digital vital rate decoder

Details Digital vital rate decoder Digital vital rate decoder

1989-06-12

1991-04-09

Gruber, Felix D.

Boots, shoes, and leggings

36442601, 246182C, 246182R, 375103, G06F 1520, H03D 318

Patent

active

050069896

ABSTRACT:
This invention relates to cab signalling systems that receive various permissible maximum speed signals and decode the maximum speed signal to inform the engineman of a train of the current maximum safe speed that a train may travel. The apparatus of this invention accomplishes the foregoing by utilizing a single digital filter and a microprocessor to decode the various transmitted maximum speed signals and to verify that the decoded maximum speed signal represents one of the permissible maximum safe speeds.

REFERENCES:
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patent: 4740972 (1988-04-01), Rutherford, Jr.
patent: 4742460 (1988-05-01), Hollands
Bollinger, "Welco Working on Bartd Signaling", Dec. 1967, Railway Signaling and Communications, pp. 18-23.
Thorne-Booth, "Signaling of Remotely Controlled Railway Trains", Jun. 1968, IEEE, pp. 369-375.

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