Automated map display system

Patent 4873513 Issued on October 10, 1989. Estimated Expiration Date:

August 26, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Cartographic indicator system
Patent #: 4360876
Issued on: 11/23/1982
Inventor: Girault , et al.

Vehicle-mounted navigator
Patent #: 4513377
Issued on: 04/23/1985
Inventor: Hasebe , et al.

Audio/visual display system for multiple maps
Patent #: 4630209
Issued on: 12/16/1986
Inventor: Saito , et al.

Map display system
Patent #: 4675676
Issued on: 06/23/1987
Inventor: Takanabe , et al.

Electronic map display system Patent #: 4737916
Issued on: 04/12/1988
Inventor: Ogawa , et al.

Inventors

Assignee

Geodisplay Technology Limited Partnership

Application

No. 089450 filed on 08/26/1987

US Classes:

345/27, Combined with storage means340/990, With map display340/995.18, Particular data storage345/530COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM

Examiners

Primary: Moore, David K.
Assistant: Brier, Jeffery

Attorney, Agent or Firm

Finnegan, Henderson, Farabow, Garrett & Dunner

International Class

G09G 001/00

Abstract

An automated map display system stores in an optical storage unit a plurality of map portion images generated from any assortment of physical maps having various geographical coverages, fields of view, map scales, cartographic projections, compass orientations, map overlaps, etc. Associated with each map portion image is specific data which permits the location (latitude and longitude) of any point in the image, the field of view and the unique relationship to all other map portion images to be efficiently determined. A keyboard and/or other input device is provided by which an operator can request the display of any map portion image which is spatially related (by field of view, adjacency, etc.) to the currently displayed image without need for any external map-related information whatsoever. A programmed processor automatically determines the unique map portion image which satisfies the user request, accesses the selected image from the optical storage unit and causes it to be displayed.