Method for producing a scaleable typeface data
US4675830A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1984 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jul 6, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for producing scaleable contour data that is capable of providing: (1) bit-map font data at any resolution and at any point size and, (2) grid aligned contours for output to contour driven devices such as, pen plotters and numerically controlled machines, is disclosed. The method "stretches" and "compresses" character contours to bring specified contour points ("Skeletal Points") into proper alignment with the "bit-map grid". The mathematical basis for the method is one of (1) breaking the character contour into segments (between a pair of Skeletal Points), (2) offsetting all coordinates in the segment to bring the first Skeletal Point to align with the grid, and finally, (3) linear scaling of the segment with a scale factor which brings the second Skeletal Point to align with the grid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.