|
Dot Code A is a two dimensional square matrix code constructed from
dots. It encodes binary numbers in the part of the symbol reserved
for data. Main features are its high information density and its
reliability combined with relatively large dimensional tolerances.
Code One is a two-dimensional matrix symbology containing dark and light
square data modules and a finder pattern of parallel lines in the symbol's
interior. A two-dimensional imaging device such as a CCD camera is
necessary to scan the symbology. Code One is designed with a fixed level
of error correction capability. It supports industry standard escape
sequences to define international code pages and special encodation
schemes. Code One is used both for large data file encoding and small item
marking applications. This document includes descriptions of the character
encodation, symbol structure, reference decode algorithm, and symbol
quality measurements for Code One.
MaxiCode is a two-dimensional matrix symbology containing a fixed number
of dark and light hexagonal modules. The symbol is specified to be a fixed
size. MaxiCode has a bulls eye finder pattern in the center of the symbol.
A two-dimensional device such as a CCD camera is necessary to scan the
symbology. MaxiCode is designed with two selectable levels of error
correction capability. It supports industry standard escape sequences to
define international code pages and special encodation schemes. MaxiCode
is used to encode address and customer specified data on shipping packages
which are scanned on high-speed conveyors. This document includes
descriptions of the character encodation, symbol structure, reference
decode algorithm, and symbol quality measurements for MaxiCode. A diskette
with electronic versions of tables referenced in the specification is
included. A symbol size overlay template is also included.
Data Matrix is a two-dimensional matrix symbology containing dark and
light square data modules. It has a finder pattern of two solid lines and
two alternating dark and light lines on the perimeter of the symbol. A
two-dimensional imaging device such as a CCD camera is necessary to scan
the symbology. Data Matrix is designed with a fixed level of error
correction capability. It supports industry standard escape sequences to
define international code pages and special encodation schemes. Data
Matrix is used for small item marking applications using a wide variety of
printing and marking technologies. This document includes descriptions of
the character encodation, symbol structure, reference decode algorithm,
and symbol quality measurements for Data Matrix. A diskette with
electronic versions of tables referenced in the specification is included.
Aztec Code is a two-dimensional matrix symbology containing dark and
light square data modules. It has a finder pattern of concentric square
rings centered on a single dark module located in the center of the
symbol. A two-dimensional imaging device such as a CCD camera is necessary
to scan the symbology. Aztec Code is designed with user-selectable
percentages of error correction. It supports industry standard escape
sequences to define international code pages and special encodation
schemes. Aztec Code is used for small item marking applications using a
wide variety of printing and marking technologies. This document includes
descriptions of the character encodation, symbol structure, reference
decode algorithm, and symbol quality measurements for Aztec Code.
QR Code is a two-dimensional matrix symbology containing dark and light
square data modules. It has position detection patterns on three of its
for corners and features direct encodation of the Japanese Kana-Kanji
character set. A two-dimensional imaging device such as a CCD camera is
necessary to scan the symbology. QR Code is designed with selectable
levels of error correction. It supports industry standard escape sequences
to define international code pages and special encodation schemes. QR Code
is used for small item marking applications using a wide variety of
printing and marking technologies. This document includes descriptions of
the character encodation, symbol structure, reference decode algorithm,
and symbol quality measurements for QR Code.
|
