Rectilinear Pointing Device and Cursor Control
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-01
Many keyboard tasks require large rectilinear cursor movements (e.g., text editing, menu selection, and electronic spreadsheet work). The user must often move the cursor many characters (or cells in the case of spreadsheets) across a line on the screen or vertically across a number of lines. There are a number of common features on terminals and microcomputers today to help with this. They all have disadvantages. Typeamatic features have the inherent disadvantage of being rate controls. The cursor is either moving at a fixed rate, moving a character position or cell at a time, or not moving at all. The user often finds that either the typeamatic rate is too slow or too fast (so that he often overshoots his target), or that he is repeatedly tapping the cursor keys. Mouse-type controls have several disadvantages.