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

• US 5,468,953 A
• Filed: 06/23/1994
• Issued: 11/21/1995
• 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
• Assistant Examiner(s): Le, Thien Minh
• Application Number:
  US08/264,481
• Time in Patent Office: 516 Days
• Field of Search: 235/436, 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. An apparatus for generating a dynamically variable machine optically readable binary code, said apparatus comprising processing means for receiving data and in response thereto producing a plurality of data elements forming said binary code, said data elements forming a two dimensional array of data elements having a perimeter, said code having a variable number of data elements and density indicia for determining the density of data contained within the code, said density indicia being disposed independently of the positioning of said two dimensional array of data elements, said density indicia being a function of the number of data elements in said code, and printing means for printing said binary code.

2. The apparatus of claim 1, wherein the apparatus generates a perimeter which further includes a size indicia indicating the physical size of the code.

3. The apparatus of claim 2, wherein the apparatus generates a perimeter which includes an orientation indicia indicating the orientation of the code relative to a visual field in which said code is disposed.

4. The apparatus of claim 2, wherein said apparatus generates a binary code having an indicia indicating the distribution pattern of the data elements within the two dimensional array of the code.