Drawing processing apparatus, display apparatus, drawing processing method and navigation apparatus
US7538780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/05
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A drawing processing apparatus and method wherein scrolling display which provides no sense of incongruity is achieved in 3D display. 3D information is produced using information in a drawing object range extracted as a predetermined range on map data. The drawing object range of an object of the 3D drawing process is moved in response to a scrolling operation. While the drawing object range is moved, 3D image data are successively produced using the drawing object range at every point of time and outputted to implement 3D display on a display screen. Thereupon, the drawing object range to be used for the 3D drawing is moved such that individual portions in the drawing object range are moved by movement amounts determined with reference to a distance in a perpendicular direction at a reference position in the drawing object range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.