×

Binary code matrix having data and parity bits

  • US 5,288,986 A
  • Filed: 09/17/1992
  • Issued: 02/22/1994
  • Est. Priority Date: 09/17/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. An optically readable matrix having four intersecting sides of approximately equal length defining a perimeter, the matrix including a binary code formed from light and dark areas of substantially equal sizes located within the perimeter, the matrix comprising:

  • a first light area, two sides of which are bounded by first and second sides of the four intersecting sides, the first light area containing a first geometrically shaped area, wherein the first geometrically shaped area is dark, and wherein the first geometrically shaped area is located in predetermined position within the first light area and has a predetermined size relationship with the first light area; and

    a first dark area, two sides of which are bounded by third and fourth sides of the four intersecting sides, the first dark area containing a second geometrically shaped area, wherein the second geometrically shaped area is light, and wherein the second geometrically shaped area is located in a predetermined position within the first dark area and has a predetermined size relationship with the first dark area.

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