Analog and digital speed display device

Details Analog and digital speed display device Analog and digital speed display device

1989-12-28

1992-08-04

Lall, Parshotam S.

Boots, shoes, and leggings

36442601, 246 1C, 246 23, 246167R, 340700, 340753, G06F 770, G06F 1548, B61L 2104, G09G 100

Patent

active

051365162

ABSTRACT:
An analog and digital display device for use with railroad vehicles which comprises: a host processor which transmits operational data received from a digital overspeed controller (DOC), such as actual speed, allowable speed, profile speed, distance to profile, messages and an indication of overspeed; a central processing unit (CPU) which receives and interprets operational data transmitted by the host processor; and an analog and digital display which displays the operational data in both analog and digital formats.

REFERENCES:
patent: 3726250 (1973-04-01), Merk
patent: 3794833 (1974-02-01), Blazek et al.
patent: 4279395 (1981-07-01), Boggio et al.
patent: 4415974 (1983-11-01), Laug et al.
patent: 4495578 (1985-01-01), Sibley et al.
patent: 4630043 (1986-12-01), Haubner et al.
patent: 4713762 (1987-12-01), Igarashi
patent: 4814757 (1989-03-01), Patterson et al.
patent: 4815824 (1989-03-01), Sharples
"Signals in rails given to motorman", Railway Signaling & Communications; Dec. 1967; by C. L. Wilksten.

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