Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of decoding bar codes and bar code reader

A barcode and reader technology, applied in the field of barcode readers, can solve problems such as not being optimal, complicated, and unable to determine whether the bar width is correct, etc.

Inactive Publication Date: 2003-12-31
FUJITSU LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, this approach is complex and not optimal
Unable to determine if corrected bar widths are correct

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of decoding bar codes and bar code reader
  • Method of decoding bar codes and bar code reader
  • Method of decoding bar codes and bar code reader

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to better understand the best mode of the present invention, the problems existing in the prior art are explained below.

[0042] Figure 1 shows an example of a UPC barcode. The barcode has a start guard bar 53 , an end guard bar 54 and a middle bar 55 .

[0043] The part between the start guard bar 53 and the middle bar 55 is the left block; the part between the middle bar 55 and the end guard bar 54 is the right block.

[0044] Each of the left and right blocks consists of six characters, so each barcode contains 12 characters.

[0045] Fig. 2 shows an example of one character of the UPC barcode. The photosensitive element of the bar code reader provides an electrical signal representing a "1" in response to light reflected from the black bars of the bar code and an electrical signal representing a "0" in response to light reflected from the white bars of the bar code.

[0046] Each character of the barcode consists of two white bars and two black bars, and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A bar code reader decodes a bar code in different directions if the bar code contains special characters whose bar widths have been corrected. The bar code reader compares the decoded results in the different directions with each other, to improve the bar code reading reliability. If the decoded results agree with each other, the results are accepted, and if not, they are discarded.

Description

technical field [0001] The invention relates to a method for decoding a barcode and a barcode reader. Background technique [0002] Many stores and supermarkets employ POS (point of sale) systems that include barcode readers. Barcode readers must read barcodes that are not always well printed. Due to poor printing quality, some bars of the barcode are thicker or thinner than standard width, uneven texture or partially broken lines. A barcode reader needs to read such poor quality barcodes correctly. [0003] A UPC barcode consists of a beginning guard bar, a middle bar, and an ending guard bar. The middle bar divides the barcode into two parts. The part between the start guard bar and the middle bar is the left block, and the part between the middle bar and the end guard bar is the right block. Each of the left and right blocks consists of six characters, so each barcode contains 12 characters. The photosensitive element of the bar code reader provides an electrical si...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00G06K7/10G06K7/14
CPCG06K7/14G06K7/1486G06K7/1465
Inventor 川合弘晃佐藤伸一伊藤元彦渡边光雄岩口功
Owner FUJITSU LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com