×

System for User Interaction with a Computer System

  • US 20100224679A1
  • Filed: 05/23/2010
  • Published: 09/09/2010
  • Est. Priority Date: 05/25/1999
  • Status: Active Grant
First Claim
Patent Images

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.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×