Rule-based text layout
US7594171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2004 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Dec 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention features systems, methods, and computer program products for typesetting a sequence of character glyphs. In on implementation, the invention provides a spacing classification file for a character set, the classification file being a text file, containing text form definitions of multiple character classes, each character class definition being structured to define a character class as having one or more arbitrary characters, the classification file further containing, in text form, multiple inter-class spacing definitions, each inter-class spacing definition defining, for an order pair of character classes, one or more spacing parameters for the ordered pair and an associated priority for each defined spacing parameter. A line of text can be compressed or expanded according to the inter-class spacing definitions for each sequential pairs of characters in the sequence of characters defined in the classification file according to their respective priorities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.