Intermec 4630 User Manual page 102

4630 and 4830 Bar Code Label Printers User's Manual
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2D matrix symbologies generally cannot be read with a laser scanner. Instead,
they are read by a digital imager that captures the entire symbol at once instead
of scanning each component individually. Since the components of 2D matrix
symbologies are decoded after the image is captured, they permit very fast data
collection.
Code One Code One is a 2D matrix symbology that stores data directly in a
matrix in a checkerboard pattern. This matrix makes Code One especially
useful for applications such as small parts labels that do not provide sufficient
space for linear bar codes. Code One automatically generates error correction
symbol characters that are added to the matrix. In addition to data storage and
error correction symbols, each Code One symbol contains a set of horizontal
lines in the center, called a finder pattern, that helps readers quickly locate and
identify each symbol. Code One symbols also contain vertical reference bars to
help readers locate the relative positions of each data bit.
Code One symbols accommodate varying amounts of data using a different
method than other codes. Other codes adjust their size to fit the data exactly.
Code One symbols are divided into versions, with each version being a specific
size. Each version can accommodate an amount of data from one bit to the
maximum amount that will fit into that version. If more data is present than the
version can accommodate, the printer will not print the symbol.
Maxicode A fixed-size symbology that is made up of offset rows of hexagonal
elements arranged around a bullseye finder pattern. Each hexagon represents
one bit of information and is either black or white depending on the state of the
encoded data bit. United Parcel Service (UPS) Research and Development
developed Maxicode for the specific purpose of encoding information about a
parcel.
This symbology only encodes very specific data that is divided into the
following fields: a 5-digit zip code, a 4-digit zip code extension, a 3-digit
country code, a 3-digit class of service, and a string of uppercase letters,
numbers, or limited punctuation marks.