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Browse Prior Art Database

Bilevel or Trilevel Displays Representative of Gray Scale Images

IP.com Disclosure Number: IPCOM000050769D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Tseng, SC [+details]

Abstract

This article relates to the generation of bilevel or trilevel images from gray scale images using complementary sequences. A computer output device, such as a printer or a display, is primarily a bilevel device, i.e., it gives only "on" and "off" outputs. In certain printers, such as thermal printers, the printer head can be made to print three or four levels in intensity.