Browse Prior Art Database

Interface Between Data Processing Control Unit and Word Processor Display

IP.com Disclosure Number: IPCOM000042129D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03

Publishing Venue

IBM

Related People

Authors:
Hunt, GT Miller, EL Mueller, MW [+details]

Abstract

Technology wherein a display terminal of a word processing system is utilized for the display of data from a data processor transmitted to the terminal from the data processor multiplexing control unit is a developing technology. In the transmission of data from the control unit to the word processor display terminal, the link protocols may often have strict timing requirements. In one system, there are two major types of commands, those that deal directly with the reading or writing of data to memory or registers of the display terminal, and those that require a high level function. All commands require an immediate response within 5.5 microseconds. The high level commands require a different response when completed, within 32 milliseconds. The original intent was for software to do all processing of high level commands.