Browse Prior Art Database

Hybrid Character Generation for Graphics System, with Stroke Font and Run-Length Encoded Font

IP.com Disclosure Number: IPCOM000113123D
Original Publication Date: 1994-Jul-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Kamata, Y: AUTHOR [+2]

Abstract

Disclosed is a character generator for graphics system provides fast generation of characters with optimal character font data format, per character, including run-length encoded font.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Hybrid Character Generation for Graphics System, with Stroke Font
and Run-Length Encoded Font

      Disclosed is a character generator for graphics system provides
fast generation of characters with optimal character font data
format, per character, including run-length encoded font.

      Character generator, within graphics system, accepts character
code points from an application and generates character font glyph
image to an output device (e.g., video frame buffer).

      Character glyph is generated from font data which is maintained
either in stroke format or run-length format.  Either format is
selected, per character, depending on actual glyph pattern in a
particular character such that character generation speed is faster.

      A character is generated with stroke font as drawing segments
of lines.  A character is generated, from top to bottom along with
horizontal scan line, with run-length encoded font.  Run-length
encoded font could provide optimal access to output device, and could
generate patterns within a horizontal scan line at the same time.

      Font formats, which is optimal to character generations, are
not limited to those described above depending upon characteristics
of output devices.