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A closer look at 1-D barcodes

A-Closer-Look-at-1D-Barcodes

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Bryan Boatner, 05-17-2016

1-D barcodes are linear codes that contain up to 25 characters of numeric-only or alphanumeric data. Each character in the code represents something different about the product and a database provides information on what each character means.

In most cases, 1-D barcodes are read from left to right. The widths of the spaces and bars relate to a specific character in the barcode. Most 1-D barcodes typically include the following elements:

closer_look_at_1d 

 

Quiet zone or margin—a blank space around a barcode that separates the barcode from neighboring graphics, shapes and textures 
Guard patterns—usually a pair of bars that indicate the beginning and end of specific data strings 
Check digit—the digit on the far right of the code used to verify that the code is complete and not damaged or otherwise missing information
 
There are many different types of 1-D barcodes. The most common symbologies include:
 
closer_look_at_1d_2 

Want to learn more? Visit the Symbologies section of the Cognex website for in-depth information barcode specifications and advantages and disadvantages of each barcode format.

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