Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2005-04-19
2005-04-19
Liang, Regina (Department: 2674)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S168000, C345S215000, C715S727000, C715S728000
Reexamination Certificate
active
06882337
ABSTRACT:
A virtual keyboard displayed on a touch sensitive screen allows a user to do touch-typing thereon to enter textual data into a computer. The keyboard image has a standard key layout for typewriting, and the keys are sized to allow the fingers of the user to take the positions necessary for “ten-finger” touch-typing in the standard fashion. The virtual keyboard image is semi-transparently displayed over on a background image, with the individual keys shown with shaded edges so that they can be easily distinguished from features in the background image. When a key is touched, a sound is generated. The sound generated when the touch is away from a target portion of the key is different from the sound generated when the touch is on or adjacent to the target portion of the key, thereby providing audio feedback to enable the user to adjust finger positions to maintain proper alignment with the virtual keys.
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International Standard: ISO 9241-2:E “Ergonomic requirements for office work with visual display terminals (VDTs)—Part 4: Keyboard requirements”.
Leydig Voit & Mayer LTD
Liang Regina
Microsoft Corporation
Nguyen Jennifer T.
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