Keyboard pointing device

Details Keyboard pointing device Keyboard pointing device

1993-12-28

2000-08-08

Lao, Lun-Yi

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345168, 345159, 345160, G09G 508

Patent

active

061008753

ABSTRACT:
An apparatus and method emulates mouse pointer functions utilizing a keyboard having an additional special function key. When the special function key is depressed, designated keys on the keyboard are interpreted as "mouse keys" which may be used to direct a pointer on a computer screen in a manner similar to a conventional mouse pointer. In one embodiment, the keys used as cursor movement keys during normal operation are designated as "mouse keys" which effect the movement of the pointer on the screen when the special function key is depressed. In addition, other keys may be used as left and right mouse buttons and as mouse lock keys. In one embodiment, the pointer speed is gradually increased when the user continuously holds any of the cursor movement keys down for a preselected interval. The data generated by the "mouse keys" are indistinguishable from data provided by conventional mouse pointer devices so that a conventional mouse driver and standard command protocol may be used in accordance with the present invention.

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