Vector generator scan converter
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.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 867347
- Patent Number(s):
- 4918624
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06K - RECOGNITION OF DATA
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- vector; generator; scan; converter; printing; speeds; graphics; data; achieved; laser; printer; transmitting; compressed; main; processor; input; output; channel; reconstructs; image; raster; microprocessor; associated; microcode; memory; containing; instruction; set; storing; hardward; drawing; graphic; parameters; calculated; buffer; reconstructed; scanner; reading; inputting; eliminates; bottleneck; created; increases; speed; thirty; fold; vector generator; image data; scan converter; generator scan; main process; graphics image; graphics data; data input; buffer memory; /358/
Citation Formats
Moore, James M, and Leighton, James F. Vector generator scan converter. United States: N. p., 1990.
Web.
Moore, James M, & Leighton, James F. Vector generator scan converter. United States.
Moore, James M, and Leighton, James F. Mon .
"Vector generator scan converter". United States. https://www.osti.gov/servlets/purl/867347.
@article{osti_867347,
title = {Vector generator scan converter},
author = {Moore, James M and Leighton, James F},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}