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US 2006/0139338 A1Published application
Transparent optical digitizer
OwnerMichael Robrecht, Jessica Voss-Kehl +1inventors
InventorsMichael Robrecht, Jessica Voss-Kehl, Billy Weaver
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Abstract
The present invention provides a digitizer that includes a transparent overlay that incorporates a transparent material pattern that is coded to be indicative of position and detection device configured to read the pattern for determining position information. The transparent material of the coded pattern can include infrared sensitive materials, for example. Transparent digitizers of the present invention may be useful in applications such as Tablet PC mobile computers.
Claims20
A position detection device comprising:
- a transparent overlay configured for viewing a display therethrough, the overlay comprising a pattern of transparent material, the pattern being indicative of position;
- and
- a detection device configured to read the pattern when the detection device is suitably positioned.
A method for making a position detection device comprising:
- providing a transparent substrate;
- and
- patterning a transparent material in a coded pattern indicative of position on the substrate so that the coded pattern can be read by a detection device to determine position of the detection device when the detection device is suitably positioned adjacent to the substrate.
Dependencies are inferred from the claim text.