Dismiss
The InnovationQ application will be updated on Sunday, May 31st from 10am-noon ET. You may experience brief service interruptions during that time.
Browse Prior Art Database

ADAPTIVE PREDICTOR FOR HALFTONE OR LINE GRAPHICS

IP.com Disclosure Number: IPCOM000024717D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal

Abstract

A compressor consisted of a predictor and encoder is described in Figure 1. I - PREDICTOR ENCODER - L I I Figure 1 In a conventional document consisting of text and line graphics, a delta predictor using previous line data is quite efficient to remove the line by line redundancy and hence improve the overall data compression ratio. The delta predictor is described in U.S. Patent No. 3,524,926 by T. Starr of Xerox Corporation.