Means for combining data of different frequencies for a raster o

Details Means for combining data of different frequencies for a raster o Means for combining data of different frequencies for a raster o

1991-05-07

1993-07-06

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358462, 358 75, H04N 121

Patent

active

052259110

ABSTRACT:
A circuit for enabling the raster display of text or line art in one constant color against a background of another constant color or against a continuous-tone picture, or the display of a continuous-tone picture through an arbitrary shape. The circuit has four channels, one each for constant colors, continuous-tone images, image masks, and instructions. The constant colors are stored in the first channel in the form of two 8-bit colors, one for the text or line art and one for the background. Any color pair can be read from this memory, divided into two 8-bit colors, and presented at two inputs of a final multiplexer. The second channel stores continuous tone color pictures and presents this information at a third input of the multiplexer. The third channel receives masks or outlines in the form of bitmaps and the fourth channel receives instructions which may be run-length encoded. These two channels combine their data, which is then used to control the multiplexer.

REFERENCES:
patent: 4803643 (1989-02-01), Hickey
patent: 4949188 (1990-08-01), Sato
patent: 4958219 (1990-09-01), Kadowaki
patent: 4963898 (1990-10-01), Kadowaki et al.
patent: 5113492 (1992-05-01), Ariki et al.
D. E. Troxel et al. IEEE Trans. Systems, Man and Cybernetics, vol. SMC-11, No. 9, Sep. 1981, pp. 585-596.
ANSI IT8.2-1988, User Exchange Format for the Exchange of Line Art Data between Electronic Prepress Systems via Magnetic Tape.
ANSI IT8.4-1990, Device Exchange Format for the On-Line Transfer of Color Proofs from Electronic Prepress to Direct Digital Color Proofing Systems.
Intelligent Processing Unit Series, Service Manual, Revision O, Apr. 1989; Canon Color Laser Copier 500 IPU.
Canon Color Laser Copier 500 IPU Programming Manual, Draft, Aug. 28, 1989.

Affiliated with

Also associated with

Rating

Means for combining data of different frequencies for a raster o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Means for combining data of different frequencies for a raster o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Means for combining data of different frequencies for a raster o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1694029