Browse Prior Art Database

Multiple Repeat Rates for a Terminal Keyboard

IP.com Disclosure Number: IPCOM000055496D
Original Publication Date: 1980-Jul-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Leimer, JJ [+details]

Abstract

Text processing and editing on a display terminal are enhanced by providing different repeat rates for different keyboard keys. For example, a "Character Advance" key should be capable of about 15 operations per second, while a "Word Advance" key rate is preferably about 10 operations per second, and a "Paragraph Advance" key should operate less than about 5 times per second when that key is held down. Multiple repeat rates are achieved by generating key codes at a fixed, high rate, then ignoring a certain proportion of the codes to produce lower rates. It is also possible to shift rates from a low rate to a high repeat rate as a key is held depressed.