Dynamically variable machine readable binary code and method for reading and producing thereof

• US 5,484,999 A
• Filed: 06/23/1994
• Issued: 01/16/1996
• Est. Priority Date: 05/05/1988
• Status: Expired due to Term

• Current Assignee: Microscan Systems Inc (Omron Corporation)
• Original Assignee: International Data Matrix Incorporated
• Inventors: Priddy, Dennis G., Cymbalski, Robert S.
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): Le, Thien Minh
• Application Number:
  US08/264,789
• Time in Patent Office: 572 Days
• Field of Search: 235/435, 235/456, 235/494, 235/437, 235/432, 235/470, 380/55, 369/100, 371/43, 341/95
• US Class Current: 235/494
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 2019/06262 with target- or other orientation-indicating feature
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence

Abstract

A machine readable binary code which is dynamically variable in size, format and density of information is provided. The binary code is formed as a matrix having a perimeter and data contained therein. The perimeter is provided with density indicia for indicating the density of data contained within the matrix. The perimeter is also provided with size indicia for indicating the size of the matrix. By utilizing the density indicia and size indicia, a scanning device is able to calculate the size and information density of the binary code.

Claims

1. A dynamically variable machine optically readable binary code comprising data in a plurality of data elements arranged in a two dimensional array having a perimeter and a density indicia indicating the density of data contained within the code, said code having a variable number of data elements, said density indicia indicating said density independently of the positioning of said data elements comprising data in the code.

2. The binary code of claim 1, wherein the density indicia further comprises a first side of the perimeter and a second side of the perimeter, each side being formed of a broken line pattern formed of alternating dark areas and light areas, wherein the product of the number of said light areas and dark areas of the first side and the number of light areas and dark areas of the second side correspond to the density of data contained within the code.

3. A machine optically readable binary code comprising data formed as a plurality of data elements in a two dimensional array, a perimeter including size indicia indicating the physical size of the code, the size indicia including a first side of the perimeter and a second side of the perimeter, said first side and second side each being formed as a solid line, the first side and second side intersecting at a first corner and corresponding to the orientation of the code.

4. The binary code of claim 3 further comprising a density indicia indicating the density of data contained within the code.

5. The binary code of claim 3, further comprising a pattern indicia indicating a distribution pattern of the data within the code.

6. The binary code of claim 5, wherein the distribution pattern is a predetermined pattern and the pattern indicia includes a distribution key within the code, said distribution key containing a second code corresponding to the predetermined pattern.

7. The binary code of claim 3 wherein the data is formed of light and dark data elements.

8. The binary code of claim 7, wherein the data is arranged in a predetermined pattern of data elements and further including a data indicia indicating the predetermined pattern of the data.

9. The binary code of claim 3 wherein the data contained within the code is provided within the code a plurality of times.

10. The binary code of claim 3, wherein the data contained within the code is compressed.

11. The binary code of claim 3, wherein the density indicia includes a third side of the perimeter and a fourth side of the perimeter, each side being formed of a broken line pattern formed of alternating dark areas and light areas, said third side and fourth side intersecting at a second corner, wherein the product of the number of said light areas and dark areas of the third side and the number of said light areas and dark areas of the fourth side correspond to the density of data contained within the code.

12. The binary code of claim 11, wherein the two dimensional array is a rhombus.

13. The binary code of claim 11, wherein the two dimensional array is a square.

14. A machine optically readable binary code comprising data formed as a matrix, the perimeter of the matrix including size indicia indicating the physical size of the matrix, orientation indicia indicating the orientation of the matrix relative to a visual field, the orientation indicia further comprising a first side of the perimeter and a second side of the perimeter, said first side and second side each being formed of a solid line, the first side and second side intersecting at a first corner, said first corner indicating the orientation of the matrix.