Display list architecture having two dimensional array of zones

Details Display list architecture having two dimensional array of zones Display list architecture having two dimensional array of zones

1997-10-17

1998-09-08

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

395101, G06F 1500

Patent

active

058051740

ABSTRACT:
The present invention uses a display list where each swath is segmented into a plurality of zones (or tiles) and each zone is processed as a separate unit. Objects going into the display list are clipped to horizontal and vertical zone boundaries by a parser. The individual zones in the display list are ultimately rasterized by an image processor, and a number of rasterized zones are temporarily stored in bit-mapped buffers. Hence, it is now possible to mix 0, 1, and 3-plane (CMY) zones in a single swath, resulting in faster throughput because fewer pixels are rendered, rotated, copied and erased. The invention also results in lower memory requirements for both the display list memory and the bit-mapped memory.

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Anthoy D. Parkhurst et al., "Connectivity of the HP DeskJet1200C Printer," Feb. 1994 Hewlett-packard Journal, pp. 85-97.

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