Printed interface with orientation target structure
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United States of America Patent
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-
May 12, 2009
Grant Date -
Sep 13, 2007
app pub date -
Apr 18, 2007
filing date -
May 25, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A printed interface for user interaction with a computer system via a sensing device is provided. The interface comprises visible graphical information and coded data readable by the sensing device. The coded data comprises a plurality of substantially undifferentiated marks positioned relative to a predetermined pattern, with an orientation target structure for allowing relative rotation of the predetermined pattern to be determined. The visible graphical information indicates an operation that the user can select and transmit to the computer system by reading the coded data with the sensing device.
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