Computer keyboard scroll bar control

Details Computer keyboard scroll bar control Computer keyboard scroll bar control

1997-09-23

2000-03-28

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345169, 345173, G09G 500

Patent

active

060438096

ABSTRACT:
A computer system includes one or more scroll bar sensors for scrolling up and down and left and right in a document or data displayed on the computer's display. The scroll bar sensors include capacitive touchpad sensors and are coupled to an electrical circuit. Localized capacitance charges are caused by the placement of an operator's finger on or near the sensor. These capacitance variations are processed by the electrical circuit to determine the location of the operator's finger on the scroll bar sensor. An operator can cause the computer system to display any section of a document or data by touching different portions of a scroll bar sensor. The computer system 100 also can determine relative motion of the operator's finger as the finger moves from one end of a scroll bar sensor to another end, thereby causing the computer to scroll through the document at a rate proportional to the operator's finger motion.

REFERENCES:
patent: 5327161 (1994-07-01), Logan et al.
patent: 5748185 (1998-05-01), Stephan et al.
patent: 5859629 (1999-01-01), Tognazzini
patent: 5901292 (1999-05-01), Nishigaki et al.

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