Digital contour line generator

Details Digital contour line generator Digital contour line generator

1987-05-28

1989-04-18

Harkcom, Gary V.

Boots, shoes, and leggings

36442401, 340747, 340990, 340995, 358103, 342 64, 342 65, 342191, G06F 1550, G06F 1572, G01S 1300

Patent

active

048232874

ABSTRACT:
A contour line generator for identifying and displaying real time elevation contour lines for use with a moving map display. A plurality of data points neighboring a selected data point are compared to determine the presence or absence of a contour line. An average elevation is computed and applied to address a contour memory, having stored therein the elevations at which contour lines are desired to be displayed. The resultant logic signals are applied dynamically to override normal display data when a contour line is to be generated. The system provides programability for flexibility in modifying contour line intervals.

REFERENCES:
patent: 4179693 (1979-12-01), Evans et al.
patent: 4347511 (1982-08-01), Hofmann et al.
patent: 4514733 (1985-04-01), Schmidtlein et al.
patent: 4660157 (1987-04-01), Beckwith et al.
patent: 4706199 (1987-11-01), Guerin
patent: 4729127 (1988-03-01), Chan et al.

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