Generation of interdependent font characters based on ligature and glyph categorizations

  • US 5,412,771 A
  • Filed: 02/07/1992
  • Issued: 05/02/1995
  • Est. Priority Date: 02/07/1992
  • Status: Expired due to Term
First Claim
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1. A computer implemented method, using a prototype set of glyph image data, for producing a contextual font for creating strings of glyphs representing characters in a language having a desired appearance, comprising the steps of:

  • from a prototype set of glyph image data, said glyph image data comprising a set of glyphs, categorizing each glyph within said set of glyphs to be utilized to create said font according to a set of predefined ligature types, each of said glyphs having either zero ligatures, one ligature, or two ligatures, each of said ligatures having an appearance value, such that each of said glyphs is categorized into at least two ligature type categories;

    averaging appearance values associated with ligatures of said glyphs categorized within each of said ligature type categories to produce a representative ligature defined by representative appearance values for each of said ligature type categories; and

    modifying said set of glyphs to produce a modified set of glyphs representing said font, each of said glyphs being modified as necessary to conform said appearance values for each of said glyphs to said representative appearance values from a ligature type category corresponding to each of said glyphs,whereby strings of glyphs produced from said modified set of glyphs have said desired appearance.

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