Apparatus and method for interpreting image data for use in a ra

Details Apparatus and method for interpreting image data for use in a ra Apparatus and method for interpreting image data for use in a ra

1990-04-27

1991-12-24

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3582611, 358450, 358456, 358464, 358467, H04N 1419, H04N 123

Patent

active

050757792

ABSTRACT:
A system for efficiently generating on a raster line plotter an image that is made up of a plurality of characters, or other objects, based on an opaque ink model. Information relating to the characters is run length encoded, so as to form tone run records corresponding to the raster lines. The tone run records contain information relating to tone value, starting location, length and screen selection. The information is then processed so as to delete, or overwrite, tone value and screen selection information of the portions of characters that underlie other characters. After the appropriate information has been deleted, the remaining screen selection and tone value information is used to create a halftone image.

REFERENCES:
patent: 4775886 (1988-10-01), Hirosawa
patent: 4807044 (1989-02-01), Kikuchi et al.
patent: 4896208 (1990-01-01), Moriya et al.
patent: 4947260 (1990-08-01), Reed et al.
patent: 4949188 (1990-08-01), Sato

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