Mixed screen design for multi-mode document

Details Mixed screen design for multi-mode document Mixed screen design for multi-mode document

2007-05-01

2007-05-01

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060

Reexamination Certificate

active

10244232

ABSTRACT:
A superpattern generator uses a first halftone pattern representing a first gray level and a second halftone pattern representing a second gray level to generate a larger pattern or “superpattern”. In a preferred implementation, the superpattern generator generates a grid of elements to be used as a template for the superpattern, calculates a distance value representing the “distance” from the first gray level to a desired gray level TX, determines how many elements of the grid represent the first halftone pattern and how many represent the second halftone pattern based on the distance value, superimposes a dither matrix on the grid and assigns values representing the first halftone pattern or the second halftone pattern to pixels within the elements of the grid by examining threshold values in the dither matrix. This process is repeated for various values of TXto generate a set of superpatterns representing a set of gray levels intermediate to the first gray level and the second gray level.

REFERENCES:
patent: 5166809 (1992-11-01), Surbrook
patent: 5689586 (1997-11-01), Lin
patent: 5892588 (1999-04-01), Samworth
patent: 6118935 (2000-09-01), Samworth
patent: 6141121 (2000-10-01), Chen et al.
patent: 6178011 (2001-01-01), Lin et al.
patent: 6288795 (2001-09-01), Urasawa
patent: 2005/0264834 (2005-12-01), Asai et al.
patent: 0 710 006 (1996-05-01), None

Affiliated with

Also associated with

Rating

Mixed screen design for multi-mode document does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mixed screen design for multi-mode document, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixed screen design for multi-mode document will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3810684