1993-04-30
1996-07-30
Powell, Mark R.
395109, G06F 1500
Patent
active
055420311
ABSTRACT:
A computer imager for processing computerized data receives signals in PostScript format. An interpreter generates compressed data signals for presentation to a rasterizer. The rasterizer and interpreter utilize parallel processing and differentiate between character, graphic and contone image page elements, each of which is processed in a different manner to maximize speed and minimize memory and other imager component utilization. Decompressed and rasterized data is presented to a graphics accelerator that includes separate circuitry for processing character and graphics/image data. There is also circuitry to resolve page location conflicts. A halftone unit is included and receives the resolved, rasterized data for presentation to a video interface and ultimately a printer or other output imaging device.
REFERENCES:
patent: 5216753 (1993-06-01), Ng
patent: 5239625 (1993-08-01), Bogart et al.
patent: 5271065 (1993-12-01), Rourke et al.
patent: 5335315 (1994-08-01), Yoshida et al.
Chan Ying W.
Douglass Clay S.
Newman Benjamin D.
Snow Paul A.
Popovici Dov
Powell Mark R.
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