Flat panel display with integrated digitizing tablet
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United States of America Patent
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Oct 10, 1989
Grant Date -
N/A
app pub date -
Jun 30, 1988
filing date -
Jun 30, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel flat panel display is provided which allows for very precise and reliable detection of the location of the cursor with respect to the displayed image. Parallax problems are eliminated by focusing the displayed image on a panel by projecting the image through the panel. The location of the stylus is accurately determined, in one embodiment, utilizing prior art digitizing techniques together with the use of an erect, unity magnification imaging lens array for displaying the projected image. In another embodiment of this invention, accurate determination of the location of the stylus with respect to the displayed image is provided by causing the stylus to feed signals, for example optical signals, through a significant portion of the optical path used for displaying the image.
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