Browse Prior Art Database

Typewriter Logic for Resolving Certain Ambiguities Arising During Repeat Chord Keying

IP.com Disclosure Number: IPCOM000052932D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Churgovich, DM Damelio, A Robb, MA [+details]

Abstract

With processor-controlled typewriters, outboard keybuttons are commonly used to invoke various operations (play, delete, etc.) involving text storage and certain keybuttons from the main keyboard may then be used concurrently (chord keying) to qualify the invoked operation for character-by-character, word-by-word or line-by-line operation. If a repeating keybutton, such as the backspace key or the space bar, is used to qualify an operation, for example, to be on a character-by-character basis, an opportunity arises for triggering an unwanted operation in the event the operator inadvertently releases the keys in the wrong order.