Printer with high bandwidth compression architecture

Details Printer with high bandwidth compression architecture Printer with high bandwidth compression architecture

1996-05-02

1997-12-30

Evans, Arthur G.

395117, G06K 1500

Patent

active

057040222

ABSTRACT:
To process bit maps for full color and other data-intense bit maps for printing, a data processing routine (FIG. 4) determines if a block at data within a page is not in color or is otherwise in a single value. Such data is stored in DRAM (28) in one bit per pel form. Other blocks are stored with eight bit for each pel. A table is then developed defining the contiguous order in a page (FIG. 6). An ASIC (32) then transfers the pel information in order of printing to a video RAM (40) with the eight bits restored for data stored in one bit per pel form. The data applied to that ASIC is decompressed.

REFERENCES:
patent: 5023813 (1991-06-01), Brown
patent: 5150454 (1992-09-01), Wood et al.
patent: 5506994 (1996-04-01), Gentile
patent: 5521990 (1996-05-01), Ishizawa

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