×

High accuracy digitizer system

  • US 5,854,449 A
  • Filed: 09/11/1995
  • Issued: 12/29/1998
  • Est. Priority Date: 09/11/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A high accuracy digitizer system for determining the position of a pointer relative to a tablet comprising:

  • a tablet having a positional grid thereon, said positional grid having positional inaccuracies therein;

    location means for determining the coarse position of said pointer relative to said tablet utilizing said positional grid on said tablet; and

    error correction means containing information regarding said positional inaccuracies in said positional grid and coupled to said location means for receiving said coarse position from said location means and for generating the true position of said pointer relative to said tablet.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×