System for user interaction with a computer system
First Claim
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1. A system for user interaction with a computer system, the system comprising:
- a printed surface having visible graphical information indicating a user selectable operation, and coded data, the coded data comprising a plurality of marks positioned relative to a predetermined pattern, the predetermined pattern having a rotationally invariant structure and an orientation target structure;
an optical sensing device for capturing images of the coded data; and
processor for determining relative rotation of the coded data from the images.
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Abstract
Provided is a system for user interaction with a computer system. The system includes a printed surface having visible graphical information indicating a user selectable operation, and coded data. The coded data has a plurality of marks positioned relative to a predetermined pattern, the predetermined pattern having a rotationally invariant structure and an orientation target structure. The system further includes an optical sensing device for capturing images of the coded data, and a processor for determining relative rotation of the coded data from the images.
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Citations
17 Claims
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1. A system for user interaction with a computer system, the system comprising:
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a printed surface having visible graphical information indicating a user selectable operation, and coded data, the coded data comprising a plurality of marks positioned relative to a predetermined pattern, the predetermined pattern having a rotationally invariant structure and an orientation target structure; an optical sensing device for capturing images of the coded data; and processor for determining relative rotation of the coded data from the images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification