Patent ID: 6313920
Filing Date: 2001-11-06
Classification: G06K

Abstract:
A computer-readable medium on which is stored a computer program for generating a spool file using incremental font subsetting on a server for a document comprising a plurality of pages, each of said plurality of pages comprising a plurality of calls, including calls comprising text information and an associated reference to a font comprising glyphs representing said text information, the computer program comprising instructions which, when executed by a computer, perform the steps of:(a) determining whether a call on a page of said document is a call comprising text information and an associated reference to a font;(b) if it is determined that said call is a call comprising text information and an associated reference to a font, determining whether the font referenced in said call is identified in a pre-existing list of fonts;(c) if it is determined that said font is not identified in said pre-existing list of fonts, adding all of the glyphs referenced in said call to a first list for said fonts and determining whether said page is the first page in said document containing a call comprising text information and an associated reference to a font, referencing said font;(d) if it is determined that said page is not the first page containing a call comprising text information and an associated font referencing said font, adding all of the glyphs referenced in said call which have not been previously referenced to a list for said font.