Method of storage and retrieval of digital map data based upon a

Details Method of storage and retrieval of digital map data based upon a Method of storage and retrieval of digital map data based upon a

1988-10-24

1990-02-06

Harkcom, Gary V.

Boots, shoes, and leggings

364522, 340990, 340995, G06F 1550

Patent

active

048992933

ABSTRACT:
A method for storage and retrieval of digital map data representative of a tessellated sphere including five zones. Firstly, the number of tessellations for each zone is defined. Secondly, the range of each zone is defined. Next, the radius of the sphere is defined. A sphereical data base is then created by warping the digital map data into the spherical data base by latitude and longitude. Finally, data from the spherical data base is retrieved and the data may be displayed on a cathode ray tube (CRT) display or a flat panel liquid crystal display.

REFERENCES:
patent: 4360876 (1982-11-01), Girault et al.
patent: 4463380 (1984-07-01), Hooks, Jr.
patent: 4484192 (1984-11-01), Seitz et al.
patent: 4660157 (1987-04-01), Beckwith et al.
patent: 4807158 (1989-02-01), Blauton et al.
"Optical Tessellated Geoid Management for Digital Map", by Edward W. Ronish, Digital Avionics Systems Conference Technical Symposium, Aug. 1986.

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