Virtual keyboard

Details Virtual keyboard Virtual keyboard

2006-04-25

2006-04-25

Nguyen, Jimmy H. (Department: 2673)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

C345S173000

Reexamination Certificate

active

07034806

ABSTRACT:
The present invention provides virtual keyboard which can be used at the same number of operations as on a conventional keyboard and can allow a natural input operation at a minimized load. The virtual keyboard comprises a liquid crystal display for displaying thereon a keyboard having special keys and general keys, a transparent pressure-sensitive panel superimposed on the display and a computing portion that, when a special key and a general key on a pressure-sensitive panel are pushed at a time, detects the coordinate of a middle point between the two pushed positions from outputs of the pressure-sensitive panel, calculates a general key position from the special key point and the middle point and outputs a code corresponding to that position.

REFERENCES:
patent: 4914624 (1990-04-01), Dunthorn
patent: 5392035 (1995-02-01), Yoshikawa
patent: 5457454 (1995-10-01), Sugano
patent: 5581243 (1996-12-01), Ouellette et al.
patent: 5581484 (1996-12-01), Prince
patent: 6107997 (2000-08-01), Ure

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