Browse Prior Art Database

Time-Dependent Encoding/Decoding of Key Operation

IP.com Disclosure Number: IPCOM000046648D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Durand, A: AUTHOR

Abstract

The usability of keyboards or keypads as man-machine interfaces is limited by the number of keys and the difficulty for the user to memorize the meaning of either too many function keys or too many multi-key commands. This article describes a method for enhancing the usability of keyboards and keypads, in which the number of functions or commands is increased by using fast multiple key depressions. According to the method described herein, a fast succession of depressions of the same key is decoded as something different from a low rate succession of key depressions. In the following, RCi (PFj) will designate a repetitive command made by a fast succession of i depressions of function key PFj.

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Time-Dependent Encoding/Decoding of Key Operation

The usability of keyboards or keypads as man-machine interfaces is limited by the number of keys and the difficulty for the user to memorize the meaning of either too many function keys or too many multi-key commands. This article describes a method for enhancing the usability of keyboards and keypads, in which the number of functions or commands is increased by using fast multiple key depressions. According to the method described herein, a fast succession of depressions of the same key is decoded as something different from a low rate succession of key depressions. In the following, RCi (PFj) will designate a repetitive command made by a fast succession of i depressions of function key PFj. A repetitive command can conveniently be used when the function of RCi (PFj) is correlated to that of PFj, for example, when searching through a document as described below. If the document is formatted, and PFj is the "Forward Jump" key, the associated repetitive commands can be: RC1 (PFj) : skip to the next sentence.

RC2 (PFj) : skip to the next item or paragraph.

RC3 (PFj) : skip to the next chapter.

RCn (PFj) with n > 3 : skip to the end. If the document is unformatted, the associated repetitive commands can be: RC1 (PFj) : skip over W1.

RC2 (PFj) : skip over W2.

RC3 (PFj) : skip over W3.

RCn (PFj), n > 3 : skip to the end. where W1, W2, W3 are multiples of an arbitrary item of information within the document.

Such repeti...