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Title: Vector generator scan converter

Patent ·
OSTI ID:6676091

This patent describes high printing speeds for graphics data that 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 hardware 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.

Assignee:
Dept. of Energy, Washington, DC (USA)
Patent Number(s):
US 4918624; A
Application Number:
PPN: US 7-152900A
OSTI ID:
6676091
Resource Relation:
Patent File Date: 5 Feb 1988
Country of Publication:
United States
Language:
English