Barcode having enhanced visual quality and systems and methods thereof

• US 7,028,902 B2
• Filed: 10/03/2002
• Issued: 04/18/2006
• Est. Priority Date: 10/03/2002
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Sang, Henry W. Jr., Xu, Yihong
• Primary Examiner(s): PAIK, STEVEN SANGYUL
• Application Number:
  US10/262,882
• Publication Number:
  US 20040065739A1
• Time in Patent Office: 1,293 Days
• Field of Search: 235/462.1, 235/462.01, 235/462.09, 235/462.11, 235/494, 235/487
• US Class Current: 235/462.1
• CPC Class Codes: G06K 19/06046 Constructional details
• 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: G06V 30/2247 Characters composed of bars, e.g. CMC-7

Abstract

A barcode with enhanced visual quality may be used with an item such as a document. The barcode includes a background field having an embedded graphic. The background caries data related to the item. The embedded graphic may obscure some background data. A bar coding apparatus, system and a corresponding method involve two basic functions: encoding and decoding. The encoding function uses an encoding algorithm to generate the barcode. The graphic is then embedded onto the barcode and the thus-generated enhanced visually significant barcode is placed on the item. Decoding involves machine-reading the barcode using a decoding algorithm. The decoding algorithm can operate with or without an original bit map that was used to generate the graphic. The graphic may be enhanced in a manner that may make at least a portion of the encoded information within the graphic readable by a human.

Claims

1. A machine-implemented barcode method, comprising:

obtaining barcode data;

obtaining image data; and

merging the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions free of barcode data and having the barcode data presented graphically in regions outside of the blackout regions, wherein merging comprises graphically presenting at least one machine-readable reference mark encoding a respective location of at least one of the blackout regions.

2. The method of claim 1, wherein obtaining barcode data, comprises:

obtaining data related to an item; and

encoding the obtained item data into two-dimensional barcode data.

3. The method of claim 1, wherein at least one reference mark encodes a beginning point of a blackout region.

4. The method of claim 3, wherein at least one reference mark encodes an endpoint of a blackout region.

5. The method of claim 1, wherein the at least one reference mark is presented graphically on the enhanced visually significant barcode in regions outside of the blackout regions and free of barcode data.

6. The method of claim 1, further comprising reading the barcode data while avoiding blackout regions based at least in part on the location encoded by the machine-readable reference mark.

7. The method of claim 6, wherein the graphically presented image data includes an image of a handwritten signature, and further comprising:

applying to the enhanced visually significant barcode at least one reference mark encoding a respective location of the signature.

8. The method of claim 6, further comprising visually verifying the signature.

9. The method of claim 1, wherein the image data obscures respective portions of the bar code data in the blackout regions.

10. A machine-implemented barcode method, comprising:

obtaining barcode data;

obtaining image data; and

merging the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions free of barcode data and having the barcode data presented graphically in regions outside of the blackout regions, wherein the graphically presented image data includes an image of a handwritten signature.

11. The method of claim 10, further comprising obtaining the signature from a trusted authority.

12. A machine-implemented barcode method, comprising:

obtaining barcode data;

obtaining image data;

merging the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions free of barcode data and having the barcode data presented graphically in regions outside of the blackout regions, wherein the graphically presented image data corresponds to a signature;

obtaining the signature from a trusted authority; and

removing the signature from the enhanced visually significant barcode; and

reading the barcode data while avoiding blackout regions.

13. A barcode apparatus, comprising:

an encoder configured to obtain barcode data and image data, and operable to merge the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions and having the barcode data presented graphically in regions outside of the blackout regions, wherein the encoder is operable to provide at least one machine-readable reference mark encoding a respective location of at least one of the blackout regions.

14. The apparatus of claim 13, further comprising a decoder operable to read the barcode data while avoiding blackout regions based at least in part on the location encoded by the machine-readable reference mark.

15. The apparatus of claim 14, wherein the graphically presented image data includes an image of a handwritten signature.

16. The apparatus of claim 14, wherein the decoder is operable to locate blackout regions based on at least one reference mark contained in the enhanced visually significant barcode and encoding a respective location of one or more of the blackout regions.

17. The apparatus of claim 16, wherein the decoder is operable to read each reference mark and avoid the blackout regions whose locations are encoded by the reference marks read by the decoder.

18. A barcode apparatus, comprising:

an encoder configured to obtain barcode data and image data, and operable to merge the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions and having the barcode data presented graphically in regions outside of the blackout regions, wherein the graphically presented image data corresponds to a signature; and

a decoder operable to read the barcode data while avoiding blackout regions, wherein the decoder is operable to obtain the signature from a trusted authority and to subtract the signature from the enhanced visually significant barcode.

19. The apparatus of claim 18, wherein the image data corresponds to a bit map image of the signature.

20. The apparatus of claim 18, wherein the image data corresponds to a vector representation of the signature.

21. A barcode with enhanced visual quality, comprising:

image data presented graphically in blackout regions;

barcode data presented graphically in regions outside of the blackout regions; and

at least one machine-readable reference mark encoding a respective location of at least one of the blackout regions.

22. The barcode of claim 21, wherein the at least one reference mark is presented graphically in regions outside of the blackout regions and free of barcode data.

23. The barcode of claim 22, wherein at least one reference mark encodes a beginning point of a blackout region.

24. The barcode of claim 23, wherein at least one reference mark encodes an endpoint of a blackout region.

25. The barcode of claim 21, wherein the barcode data comprises data related to a document to which the enhanced visually significant barcode is affixed.

26. The barcode of claim 21, wherein the graphically presented image data corresponds to one or more of a signature, and identification code, a universal resource locator code, encrypted data, unencrypted data, and a logo.

27. A barcode with enhanced visual quality, comprising:

image data presented graphically in blackout regions;

barcode data presented graphically in regions outside of the blackout regions; and

at least one machine-readable reference mark locating at least one of the blackout regions, wherein at least one reference mark identifies a storage location of an image corresponding to the graphically presented image data.

28. A barcode with enhanced visual quality, comprising:

image data presented graphically in blackout regions;

barcode data presented graphically in regions outside of the blackout regions; and

at least one machine-readable reference mark locating at least one of the blackout regions, wherein at least one reference mark comprises a vector description of the graphically presented image data.

29. A system that encodes and decodes an enhanced, visually significant barcode, comprising:

an encoder operable to merge the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions and having the barcode data presented graphically in regions outside of the blackout regions, the encoder being further operable to graphically present at least one machine-readable reference mark encoding a respective location of at least one of the blackout regions; and

a decoder operable to read the barcode data while avoiding blackout regions based on the at least one machine-readable reference mark.

30. The system of claim 29, wherein the encoder is operable to provide the at least on reference mark in regions outside of the blackout regions and free of barcode data.

31. The system of claim 29, wherein the enhanced, visually significant bar code comprises a two-dimensional barcode.

32. The system of claim 29, wherein the enhanced, visually significant barcode comprises a color barcode.

33. A system that encodes and decodes an enhanced, visually significant barcode, comprising:

an encoder operable to merge the barcode data and the image data into an enhanced visually significant barcode having image data presented graphically in blackout regions and having the barcode data presented graphically in regions outside of the blackout regions, the encoder being further operable to graphically present at least one machine-readable reference mark locating at least one of the blackout regions; and

a decoder operable to read the barcode data while avoiding blackout regions based on the at least one machine-readable reference mark, wherein at least one reference mark provided by the encoder identifies a storage location of a description of an image corresponding to the graphically presented image data, and wherein the decoder is operable to retrieve the image description from the storage location based on the at least one reference mark.

34. A system that encodes and decodes an enhanced, visually significant barcode, comprising:

an encoder operable to merge the barcode data and the image data into an enhanced visually significant barcode having image data presented a graphically in blackout regions and having the barcode data presented graphically in regions outside of the blackout regions, the encoder being further operable to graphically present at least one machine-readable reference mark locating at least one of the blackout regions; and

a decoder operable to read the barcode data while avoiding blackout regions based on the at least one machine-readable reference mark, wherein a reference mark identifies a given endpoint of a given blackout region by specifying a distance from a beginning point of the given blackout region to the given endpoint.