Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1974-10-21
1976-02-24
Lieberman, Eli
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
214 164A, 250224, 250372, 340 23, 340 32, 340 50, G08G 100
Patent
active
039406300
ABSTRACT:
A system to locate selected vehicles traveling on standard streets or highways which periodically and automatically determines the location of the vehicle relative to a pre-established reference such as a map using fixed passive optical arrays as sign posts and means on the vehicles to read the sign posts and communicate the locational information thereon to a central monitoring station.
REFERENCES:
patent: 3130310 (1964-04-01), Biberman et al.
patent: 3145291 (1964-08-01), Brainerd
patent: 3697941 (1972-10-01), Christ
patent: 3701102 (1972-10-01), Berman et al.
patent: 3735335 (1973-05-01), Kaplan et al.
patent: 3815084 (1974-06-01), Pease
Finch G. W.
Jason W. J.
LaRoche E. R.
Lieberman Eli
McDonnell Douglas Corporation
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