Method and system for on screen text correction via pen interface

Abstract

A system and method for changing data displayed on a touch-sensitive display screen. The present system and method recognize handwritten strokes made with a stylus on the touch-sensitive display screen of a PDA or palmtop computer in order to alter or correct displayed data. In one mode of operation, computer controlled association of the location of the handwritten strokes on the display screen with one or more of the displayed characters will result in automatic replacement of those characters by the handwritten strokes. In a second mode of operation, matching at least one of the handwritten strokes with one character of the displayed data will result in replacement of one or more characters of the displayed data with the handwritten characters. With the present system and method, the number of steps required to alter displayed data is reduced to the number of handwritten strokes. A significant reduction in time and effort as well as simplification in application is therefore offered.

1 . A method for correcting text comprising the steps of: 
 a) displaying a first text portion on a touch-sensitive display screen;    b) automatically recognizing user input repr    c) using the display location of said handwritten strokes to associate them with said first text portion;    d) using similarities between said recognized handwritten strokes and said first text portion to amend said first text portion to produce a second text portion; and    e) replacing, on said display screen, said first text portion with said second text portion.