Method for selecting graphical objects in quadrants with a cursor
US5459831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Oct 6, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S715/964
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for organizing graphical objects in a graphics database that facilitates the rapid selection of one or more graphical objects on a computer display screen. Graphical objects are stored in the graphics database using a spatially organized data structure. The spacially organized data structure is formed by recursively subdividing the graphics space until each subspace contains no more than a predetermined number of graphical objects. The spacially organized database is ideally suited for spacial queries required to select, based on visual criteria, graphical objects appearing on a display screen. Graphical objects may be selected in response to a cursor moving about a display screen under programmer control, or in response to a system request to identify one or more objects spacially located in a given portion of the graphics space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.