Barcode Technology - DataMatrix Barcode               Hide the description

Data Matrix barcode is one of the best known 2D codes, the development of the Data Matrix code started in the 80ies.

A Data Matrix is a two-dimensional code consisting of black and white "cells" or dots arranged in either a square

or rectangular pattern, also known as a matrix. The information to be encoded can be text or numeric data. Usual data size is from a few bytes up to 1556 bytes. The length of the encoded data depends on the number of cells in the matrix. Error correction codes are often used to increase reliability: even if one or more cells are damaged so it is unreadable, the message can still be read. A Data Matrix symbol can store up to 2,335 alphanumeric characters..

Valid characters: ASCII 1-255

Data Matrix symbols are rectangular, usually square in shape and composed of square "cells" which represent bits.

Depending on the coding used, a "light" cell represents a 0 and a "dark" cell is a 1, or vice versa. Every Data Matrix is composed of two solid adjacent borders in an "L" shape (called the "finder pattern") and two other borders consisting of alternating dark and light "cells" or modules (called the "timing pattern"). Within these borders are rows and columns of cells encoding information. The finder pattern is used to locate and orient the symbol while the timing pattern provides a count of the number of rows and columns in the symbol. As more data is encoded in the symbol, the number of cells (rows and columns) increases. Each code is unique.

A Data Matrix Code can encode up to 3116 numbers or up to 2335 characters. Different symbol sizes are used

depending on the amount of data to be encoded.

Applications of Data Matrix

As a new bar code technology, Data Matrix has been widely used in the field of defense, healthcare, business, finance, logistics management in Western countries. Since the minimal size of Data Matrix is the smallest one among various barcode types, it is especially appropriate for marking small items. Nowadays, it is commonly applied to printed media, such as labels and letters.

DataMatrix is one of the many barcode formats currently in use.

A Barcode is a method of representing data in a visual, machine-readable form.

The barcode formats has two categories:

One-dimensional (1D) --- Barcodes represented data by varying the widths and spacings of parallel lines.

Two-dimensional (2D) --- Using rectangles, dots, hexagons and other geometric patterns to represented data.

Error Correction Capacity:

ECC 200 uses Reed-Solomon error correction. And there are two kinds of erroneous codewords that can be corrected by the error correction codewords. One is an unscanned or undecodable symbol character called erasures, while the other is a misdecoded symbol character called errors.
The number of them can be given by the following formula:
e + 2t < d - p
In this formula, e, t, d, p stands for number of erasures, errors, error correction codewords, and codewords reserved for error detection respectively.

Human Readable:

Most barcodes display their corresponding values below them, which makes it possible to human read and manually  enter the barcode values into the equivalent system when the barcode label is worn out and cannot be read by the barcode scanner.

The Advantages of using barcodes:

If you want to reduce costs and save time, using barcodes is a good choice. Whether you are a company or a non-commercial organization, to improve efficiency and reduce overhead, barcodes are a valuable and viable option, which is economical and reliable.

The bar code design and printing cost are low. Generally speaking, no matter how they are used or where they are posted, the cost is not high. They can be customized economically, in a variety of finishes and materials.

The barcode system is very versatile, it can be used for any necessary data collection. This may include pricing or inventory information or management information service system. In addition, because barcodes can be affixed to almost any surface, they can be used not only to track the product itself, but also to track the production process, shipments and equipments.

Using barcode system will improve the inventory control is improved, it can track inventory accurately, inventory levels can be reduced it will lower the rate of eavesdropping. The location of the inventory and device can also be tracked, thereby reducing the time it takes to find the inventory and device.

The barcode system provide better data. Because a barcode can store various information such as inventory and pricing, especially when using QR Code, it can store thousands of characters, so the data stored in the barcode can be quickly obtained by the barcode reader, this fast turnaround ensures that time is not wasted on data entry or retrieval. In addition, the barcode can be customized to include other relevant information as needed. They provide fast and reliable data for various applications.

When barcodes are used in management information systems, they can promote better decision-making. Because data is obtained quickly and accurately, you can quickly obtain a full range of information for the entire company or organization, so it is possible to make more informed decisions. Better decisions can ultimately save time and money.

Barcodes are cheap and user-friendly, providing an indispensable tool for tracking data from pricing to inventory. The end result of a comprehensive bar code system is reduced overhead.

Comparison of Data Matrix and QR Code

Both Data Matrix and QR Code are two-dimensional barcode, which are able to contain a considerably great volume of information with a small area. However, there are many differences between Data Matrix and QR Code.

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