Vector generator scan converter

Details Vector generator scan converter Vector generator scan converter

1988-02-05

1990-04-17

Harkcom, Gary V.

Boots, shoes, and leggings

364518, 340739, 340747, G06F 1566, G06K 1500

Patent

active

049186248

ABSTRACT:
High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O (input/output) channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardward for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold.

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patent: 4635212 (1987-01-01), Hatazawa
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patent: 4677571 (1987-06-01), Riseman et al.
patent: 4688181 (1987-08-01), Cottrell et al.
patent: 4722064 (1988-01-01), Suzuki
patent: 4736330 (1988-04-01), Capowski

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