Touch panel "double-touch" input method and detection apparatus

Details Touch panel "double-touch" input method and detection apparatus Touch panel "double-touch" input method and detection apparatus

1996-12-05

1999-08-24

Hofsass, Jeffery A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

G09G 500

Patent

active

059430435

ABSTRACT:
A "double-touch" input method is described that is particularly suitable for use as a substitute for a "double-click" input from a mouse or trackball, and that is particularly suitable for use with a touch panel. Briefly, the input method involves contacting a touch panel at a first location (for example, over an area where an icon is displayed) with a first finger. Before a predetermined period of time T.sub.wait elapses, a second finger "taps" the panel at a second location. The location tapped by the second finger is greater than a predetermined distance from the first location tapped by the first finger. In addition, the tap by the second finger is shorter than a second predetermined period of time T.sub.tap. After the tap by the second finger, the first finger is still in contact with the touch panel. The position of the first finger after the tap should be within a predetermined range of its position just prior to the tap. Apparatus in the form of a device driver is described for detecting a double touch input.

REFERENCES:
patent: 4914624 (1990-04-01), Dunthorn
patent: 5402151 (1995-03-01), Duwaer
patent: 5570113 (1996-10-01), Zetts
patent: 5579036 (1996-11-01), Yates, IV
patent: 5691748 (1997-11-01), Fukuzaki

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