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Programming Technique to Clear a Display Area on a Low Speed Display Terminal

IP.com Disclosure Number: IPCOM000042707D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04

Publishing Venue

IBM

Related People

Authors:
Girardi, S Leroy, S [+details]

Abstract

Described is a programming technique to clear a display area on a low speed display terminal by a host application without impairing the response time. It applies to a class of terminals with the following characteristics: low speed communicating with a system/processor, having formatted fields protected/unprotected capabilities, having the support of a host command to erase all unprotected data on the screen, and having no screen partitioning or repeat to address order facilities. In many display-oriented applications, the screen image is organized in areas protected against operator modifications and operator work areas with protected/unprotected fields for application/operator interactions. The technique applies to applications for which only one operator work area is provided.