Electronic boundary generation
US5227770A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Feb 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04845
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for generating an electronic representation of a boundary, particularly for use in generating an outline around a displayed image. The apparatus comprises a screen (30) and a control system (1,2). The control system enables a cursor to be moved to spaced points along the boundary and determines the coordinates of the boundary by interpolating straight lines between adjacent points. The control system also permits at least part of the boundary to be defined in a continuous drawing mode in which the cursor is moved continuously along the boundary, the coordinates of the successive cursor positions being determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.