Browse Prior Art Database

Keyboard Based Pointing Device

IP.com Disclosure Number: IPCOM000112205D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Hanna, P: AUTHOR

Abstract

A cursor may be controlled from the keyboard of a computer terminal or personal computer so that the cursor 10 may be rotated around an arbitrary point A and moved in the direction in which the cursor 10 points. An arrowhead or similar icon 10 may be used as the cursor. The drawing of the cursor 10 on the display 12 is controlled by the operating system software of the system and can reorient the cursor 11 by erasing and redrawing the cursor icon 11 rotationally displaced about a point A such as the tip of the arrowhead. The resolution of the rotation may be controlled by predetermining the amount of rotation d theta. The cursor 11 will be rotated by increments of d theta for each cycle through the software by the system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 89% of the total text.

Keyboard Based Pointing Device

      A cursor may be controlled from the keyboard of a computer
terminal or personal computer so that the cursor 10 may be rotated
around an arbitrary point A and moved in the direction in which the
cursor 10 points.  An arrowhead or similar icon 10 may be used as the
cursor.  The drawing of the cursor 10 on the display 12 is controlled
by the operating system software of the system and can reorient the
cursor 11 by erasing and redrawing the cursor icon 11 rotationally
displaced about a point A such as the tip of the arrowhead.  The
resolution of the rotation may be controlled by predetermining the
amount of rotation d theta.  The cursor 11 will be rotated by
increments of d theta for each cycle through the software by the
system.

      The control of the rotation is effected through the ROTATE key
18.  Depression of key 18 starts and release stops the rotation.

      MOVE key 20 controls the displacement of the cursor 11 in a
direction theta indicated by the orientation of the cursor 11.
Depression of key 20 initiates movement and release terminates
movement of the cursor 11.

      The keyboard 14 of the system may be further provided with Left
and Right Select keys 22, 24 for functioning equivalent to the select
keys of a mouse, when the cursor 11 is resident over a selected
control item displayed on the face 13 of display 12.

      The ROTATE key 18 and MOVE key 20 may be force sensitive keys
that respond to th...