|
The appearance of the Data
Matrix 2D barcode is a square or
rectangular symbol composed of
many small squares. The
information is stored in a
binary-code manner by an
arrangement and combination of
light and dark squares.
The size of the Data Matrix
two-dimensional barcode can be
adjusted arbitrarily, with the
maximum range of 14 square
inches and the minimum range of
0.0002 square inches. This size
is also the smallest among
current one-dimensional and
two-dimensional barcodes. On the
other hand, the size of most
barcodes has an absolute
relationship with the amount of
data encoded, but the size of
the Data Matrix two-dimensional
barcode and the amount of data
encoded are independent of each
other, so its size is relatively
flexible. In addition, the Data
Matrix 2D barcode also has the
following characteristics:
1. The encodeable character set
includes all ASCII characters
and extended ASCII characters, a
total of 256 characters.
2. Barcode size (excluding blank
area): 10กม10 ~ 144กม144
3. Data capacity: 2235
alphanumeric data, 1556 8-bit
data, 3116 digital data.
4. Error correction: Use the
Reed-Solomon algorithm to
generate polynomial calculations
to obtain error correction
codes. Different sizes should
use different numbers of error
correction codes.
Encoding, so the computer can
directly read the data content
without the need for a Character
Look-up Table like a traditional
one-dimensional barcode. Dark
color represents "1", light
color represents "0", and
strings of light and dark
squares are used to describe
special character information.
These strings are then arranged
into a complete matrix code. A
Data Matrix two-dimensional
barcode is formed, and then
printed on different material
surfaces using different
printers. Since the Data Matrix
2D barcode only needs to read
20% of the data to be accurately
read, it is very suitable for
use in places where barcodes are
easily damaged, such as parts
printed on parts exposed to
special environments such as
high heat, chemical cleaners,
and mechanical abrasion. |