Dual bar code reading system for a data storage system

• US 6,758,400 B1
• Filed: 11/20/2000
• Issued: 07/06/2004
• Est. Priority Date: 11/20/2000
• Status: Expired due to Term

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Johnson, Kristianne E, Reasoner, Kelly J, Gardner, Richard Lynn Jr.
• Primary Examiner(s): Frech, Karl D.
• Assistant Examiner(s): Kim, Ahshik
• Application Number:
  US09/716,878
• Time in Patent Office: 1,324 Days
• Field of Search: 235/462.01, 235/462.09, 235/462.1, 235/494, 235/462.12, 235/462.07, 235/462.08
• US Class Current: 235/462.01
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1491 the method including a reconstruction step, e.g. stitching two pieces of bar code together to derive the full bar code

Abstract

A bar code reading system comprises a first bar code label and a second bar code label. The first bar code label is positioned on an object at a first location and in a first orientation. The second bar code label is positioned on the object at a second location and in a second orientation. The first and second bar code labels each have indicia thereon representative of a label data set. Bar code reading apparatus positionable next to the object has a limited field of view such that the bar code reading apparatus reads only first and second portions of the first and second bar code labels. The bar code reading apparatus produces first and second data sets representative of the first and second portions. A data processing system operatively associated with the bar code reading apparatus combines the first and second data sets to produce a combined data set representative of the label data set.

Claims

1. A bar code reading system, comprising:

a first bar code label positioned on an object at a first location and in a first orientation, said first bar code label having indicia thereon representative of a label data set;

a second bar code label positioned on the object at a second location and in a second orientation, said second bar code label having indicia thereon representative of the label data set;

bar code reading apparatus positionable next to the object, said bar code reading apparatus having a limited field of view such that said bar code reading apparatus reads only first and second portions of said first and second bar code labels, said bar code reading apparatus producing first and second data sets representative of the first and second portions; and

a data processing system operatively associated with said bar code reading apparatus, said data processing system combining said first and second data sets to produce a combined data set representative of the label data set.

2. The bar code reading system of claim 1, wherein the second location is adjacent the first location so that said second bar code label is located adjacent said first bar code label.

3. The bar code reading system of claim 1, wherein the second orientation is reversed with respect to the first orientation.

4. The bar code reading system of claim 1, wherein said first bar code label comprises a first end and a second end, wherein said second bar code label is substantially identical to said first bar code label, and wherein said second bar code label comprises a first end and a second end.

5. The bar code reading system of claim 4, wherein said first and second bar code labels are positioned on said object in side-by-side relationship so that the second end of said second bar code label is adjacent the first end of said first bar code label.

6. The bar code reading system of claim 1, wherein the first portion of said first bar code label comprises an upper portion of said first bar code label, and wherein the second portion of said second bar code label comprises an upper portion of said second bar code label.

7. The bar code reading system of claim 1, wherein the first portion of said first bar code label comprises a lower portion of said first bar code label, and wherein the second portion of said second bar code label comprises a lower portion of said second bar code label.

8. The bar code reading system of claim 1, wherein said data processing system comprises a stitching algorithm.

9. A bar code reading system, comprising:

first label means for representing a label data set;

second label means for representing the label data set;

means for reading a first portion of said first label means and for producing a first data set representative thereof;

means for reading a second portion of said second label means and for producing a second data set representative thereof; and

means for combining the first and second data sets to produce a combined data set representative of the label data set.

10. A method for reading bar code labels with limited-view bar code reading apparatus, comprising:

positioning a first bar code label on an object at a first location and in a first orientation, said first bar code label having indicia thereon representative of a label data set;

positioning a second bar code label on the object at a second location and in a second orientation, said second bar code label having indicia thereon representative of the label data set;

positioning said bar code reading apparatus next to said object;

operating said bar code reading apparatus to read first and second portions of said first and second bar code labels and to produce first and second data sets representative of said first and second portions; and

combining said first and second data sets to produce a combined data set representative of the label data set.

11. A bar code reading system, comprising:

a first bar code label positioned on an object at a first location and in a first orientation, said first bar code label having indicia thereon representative of a label data set;

a second bar code label positioned on the object at a second location and in a second orientation, said second bar code label having indicia thereon representative of the label data set;

bar code reading apparatus positionable next to the object, said bar code reading apparatus having a limited field of view such that said bar code reading apparatus reads only a first portion of said first bar code label, said bar code reading apparatus producing a first data set representative of the first portion of said first bar code label and a second data set representative of said second bar code label; and

a data processing system operatively associated with said bar code reading apparatus, said data processing system combining said first and second data sets to produce a combined data set representative of the label data set.

12. The bar code reading system of claim 11, wherein the second position is adjacent the first position so that said second bar code label is located adjacent said first bar code label.

13. The bar code reading system of claim 11, wherein the second orientation is reversed with respect to the first orientation.

14. The bar code reading system of claim 11, wherein said first bar code label comprises a first end and a second end, wherein said second bar code label comprises a first end and a second end.

15. The bar code reading system of claim 14, wherein said first and second bar code labels are positioned on said object in side-by-side relationship so that the second end of said second bar code label is adjacent the first end of said first bar code label.

16. The bar code reading system of claim 11, wherein said second bar code label is entirely within the field of view of said bar code reading apparatus.

17. The bar code reading system of claim 16, wherein said first bar code label comprises a low density label and wherein said second bar code label comprises a high density label.

18. A code reading system, comprising:

a first machine-readable code positioned on an object at a first location and in a first orientation, said first machine-readable code having indicia therein representative of a code data set;

a second machine-readable code positioned on the object at a second location and in a second orientation, said second machine-readable code having indicia therein representative of the code data set;

code reading apparatus positionable next to the object, said code reading apparatus having a limited field of view such that said code reading apparatus reads only first and second portions of said first and second machine-readable codes, said code reading apparatus producing first and second data sets representative of the first and second portions; and

a data processing system operatively associated with said code reading apparatus, said data processing system combining said first and second data sets to produce a combined data set representative of the code data set.

19. The code reading system of claim 18, wherein the second location is adjacent the first location so that said second machine-readable code is located adjacent said first machine-readable code and so that the second orientation is reversed with respect to the first orientation.

20. The bar code reading system of claim 18, wherein said first machine-readable code comprises a first end and a second end, wherein said second machine-readable code is substantially identical to said first machine-readable code, and wherein said second machine-readable code comprises a first end and a second end, said first and second machine-readable codes being positioned on said object in side-by-side relationship so that the second end of said second machine-readable code is adjacent the first end of said first machine-readable code.

21. A method for reading machine-readable code with a code reading apparatus having a limited field of view, comprising:

positioning a first machine-readable code on an object at a first location and in a first orientation, said first machine-readable code having indicia thereon representative of a code data set;

positioning a second machine-readable code on the object at a second location and in a second orientation, said second machine-readable code having indicia thereon representative of the code data set;

positioning said code reading apparatus next to said object;

operating said code reading apparatus to read first and second portions of said first and second machine-readable codes and to produce first and second data sets representative of said first and second portions; and

combining said first and second data sets to produce a combined data set representative of the code data set.