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Dual pointer management method using cooperating input sources and efficient dynamic coordinate remapping

  • US 8,188,969 B2
  • Filed: 01/15/2010
  • Issued: 05/29/2012
  • Est. Priority Date: 06/26/2009
  • Status: Expired due to Fees
First Claim
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1. A pointer control apparatus comprising:

  • a first input device that provides a position signal expressed using a first coordinate system associated with the first input device;

    a second input device that provides a position signal expressed using a second coordinate system associated with the second input device;

    a pointer generation system that generates for display in a common display space having a common display coordinate system a first pointer associated with the first input device and a second pointer associated with the second input device;

    a mapping integrator processor configured to compute the position of the first pointer within the display coordinate system based in part upon the position signal of the first input device and based in part upon the position signal of the second input device, and configured to compute the position of the second pointer within the display coordinate system based in part upon the position signal of the second input device and based in part upon the position signal of the first input device;

    the mapping integrator processor being further configured to compute the position of the first and second pointers such that each is confined to a different side of a dynamic boundary within the common display coordinate system, where the dynamic boundary is adjusted by the processor based on knowledge of the respective position signals of the first and second input devices.

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