Apparatus and methods for creating and using portable fonts
US5577177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | May 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/151
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computerized apparatus and methods for character shape recording develops new font descriptions from shapes received from pre-defined descriptions. It does so by modeling each such shape to find features, such as points on its outlines, which are a function of that shape itself, rather than the manner in which the pre-defined description defined that shape. The system bases the segmentation of the new font description on such description-independent points. It finds new line or curve segments to approximate the pre-defined font description between such description-independent points, and it picks the outline order, starting points, and directions of that description according to standard rules. This causes the new font descriptions to be free of non-shape-required aspects of the pre-defined descriptions. It is also preferred that the system find how finely the curve must be subdivided on playback so it can be accurately portrayed with vectors by recursively subdividing the curve into subdivisions, approximating each subdivision by a vector, and recursing on the worst fitted subdivision until the worst fit is acceptable. Preferably the system matches outline shapes for different c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.