Registers – Coded record sensors – Particular sensor structure
Patent
1982-06-10
1984-04-24
Pitts, Harold I.
Registers
Coded record sensors
Particular sensor structure
235462, 235494, G06K 710
Patent
active
044450281
ABSTRACT:
A system for plotting information on maps and reading information therefrom omprising maps which have machine-readable codes on the backs thereof arranged to indicate the coordinates of the map. A stylus is adapted to be moved over the map surface to read the map coordinates by sensing the codes thereon. The novel unidirectional codes comprising code bars all extending in the same direction, permit the use of simplified code sensing apparatus.
REFERENCES:
patent: 3052800 (1962-09-01), Miller
patent: 4110610 (1978-08-01), Mueller et al.
patent: 4143267 (1979-03-01), Johnson et al.
Dougherty Anne Vachon
Gibson Robert P.
Lev Robert
Murray Jeremiah G.
Pitts Harold I.
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