High speed apparatus and method for rasterization of font glyphs

Details High speed apparatus and method for rasterization of font glyphs High speed apparatus and method for rasterization of font glyphs

1994-09-30

1996-05-14

Bayerl, Raymond J.

395150, G06K 710

Patent

active

055176011

ABSTRACT:
An apparatus derives data to enable a fill action during operation of a print device along a scan line. The apparatus includes a processor which determines, for each of a sequence of contours of a glyph, point of intersection values between a scan line and the contours. The sequential point of intersection values indicate OFF-to-ON and ON-to-OFF transitions required of the print device. Sequential OFF-to-ON and ON-to-OFF transitions comprise a transition pair. The apparatus includes a memory comprising 2N storage positions for storage of N transition pairs. Comparator circuitry is coupled in parallel to the 2N storage positions. A controller operates the comparator circuitry to determine an order of all OFF-to-ON point of intersection values and an order of all ON-to-OFF point of intersection values in the 2N storage positions. Switch circuitry is responsive to the determined order of OFF-to-ON point of intersection values to re-order the OFF-to-ON point of intersection values in the 2N storage positions and is further responsive to the determined order of the ON-to-OFF point of intersection values to re-order the ON-to-OFF point intersection values in the 2N storage positions. Overlap regions are determined and transition pairs to be arranged so that overlap regions are ignored.

REFERENCES:
patent: 4928247 (1990-05-01), Doyle et al.
patent: 5097411 (1992-03-01), Doyle et al.
patent: 5155822 (1992-10-01), Doyle et al.
patent: 5159668 (1992-10-01), Kaasila
patent: 5168147 (1992-12-01), Bloomberg
patent: 5195176 (1993-03-01), Lung
patent: 5251322 (1993-10-01), Doyle et al.
patent: 5301267 (1994-04-01), Hassett et al.
patent: 5307451 (1994-04-01), Clark
patent: 5315696 (1994-05-01), Case et al.
patent: 5321810 (1994-06-01), Case et al.
patent: 5325479 (1994-06-01), Kaasila

Affiliated with

Also associated with

Rating

High speed apparatus and method for rasterization of font glyphs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High speed apparatus and method for rasterization of font glyphs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed apparatus and method for rasterization of font glyphs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1903593