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Bar Code Symbologies |
Whether you are reading smaller, high density data matrix
(2D) codes or larger low density linear codes (1D), Code
Bar Code Readers will outperform all other devices.
Sample 2D codes:
Aztec
Code / DataMatrix / MicroPDF417 / PDF417 / QRCode / MaxiCode |
|
| Code Type: |
Matrix, either dark cells on light background or light cells on dark background |
| Encodable character set: |
ASCII (ISO 646 IRV) (0-127) and ISO 8859-1 (128-255).
Alternative character sets encodable using ECI protocol. |
| Matrix Size: |
- "Compact" Aztec Code: from 15 x 15 to 27 x 27, increasing in steps of 4 modules in each direction
- "Full-range" Aztec Code: from 19 x 19 to 151 x 151, increasing in steps of 4 modules in each
direction (6 in certain cases, to allow for reference
grid)
- "Aztec Rune": fixed size 11 x 11
|
| Finder
Pattern: |
Central bull's eye pattern of alternately dark and light concentric squares 1
module thick around a single central module - 2
layers for "Compact" Aztec Code and Aztech Rune,
and 3 layers for "Full-range" symbols |
| Symbol
Overhead: |
Finder + orientation patterns (Compact: 83 modules; Full-range: 181 modules);
reference grid (full range symbols) (no. of modules
varies with symbol size from 12 to 2792); mode
message (Compact; 28 modules; Full-range: 40 modules) |
| Max. codewords: |
1664 x 12-bit |
| Symbol character structure: |
n=6, 8, 10 or 12 codeword bits arranged as (n/2) 2-module "dominoes" |
| Quiet zone: |
None requied |
| Max. data per symbol: |
Numeric: 7089 digits
Alphanumeric: 4296 characters
Latin/Katakana: 2953 characters
Kanji:
1817 bytes
|
| Error control: |
-
Error control: Reed-Solomon error correction
- Error correction levels; 4 user seletable (L, M, Q and H)
- Max. errors correctable (Version 40-H symbol)
2530 erasures or 1215 errors
|
| Typical Applications: |
The primary application for MaxiCode is transportation, an in the sorting, handling
and tracking of packages by carriers. |
|
| Code Type: |
Matrix, either dark cells on light background or light cells on dark background |
| Encodable character set: |
ASCII (ISO 646 IRV) (0-127) and ISO 8859-1 (128 - 255.
Alternative character sets encodable using ECI protocol. |
| Matrix Size: |
- ECC 000 - 140 symbols
9 x 9 to 49 x 49 (odd combinations only)
- ECC 200 symbols
Square, from 10 x 10 to 144 x 144 (even combinations only)
Rectangular, 8 x 18 to 16 x 48
|
| Finder
Pattern: |
Dark 1 cell wide L-shaped on left and lower side plus alternating light/dark
cells on upper and right sides |
| Alignment
Pattern: |
Horizontal and vertical lines 1 cell wide traversing the symbol, with abutting
line of alternating light/dark cells below or to
left, in symbols over 31 modules square. |
| Max. codewords: |
2178 including 620 error correction codewords |
| Symbol character structure: |
- ECC 000 - 140: Continous undivided bit streat
placed in matrix in predefined positions
- ECC 200: 8 cells arranged in 3 x 3 matrix with upper right corner cell omitted
|
| Max. data per symbol: |
Numeric: 3116 digits
Alphanumeric: 2335 characters
Full ASCII: Not directly calculable
Extended ASCII: Not
directly calculable
Byte: 1556 bytes |
| Error control: |
- ECC 000 - 140 symbols
Error control: Convolutional coding
User selectable error correction levels: 4 (plus
error detection only) - ECC 000, ECC 050, ECC
080, ECC 100 and ECC 140
- ECC 200 symbols
Error control: Reed-Solomon error correction
Error correction level; Fixed for each size of symbol
Max. errors correctable (144 x 144 symbol) 590 erasures
or 310 errors Max. errors
|
| Typical Applications: |
Selected by Electronic Industries Association for small component marking and
by SEMI for silicon wafer marking; pharmaceutical
unit dose and product marking. |
|
| Code Type: |
Matrix |
| Encodable character set: |
ASCII (ISO 646 IRV) (0-127), JIS-X0201 (Latin and Katakana), Shift JIS (in accordance
with JIS-X0208 Annex I)
Alternative character sets encodable using ECI protocol. |
| Matrix Size: |
- Model 1 symbols: 21 x 21 to 73 x 73 increasing
in of 4 modules in both dimensions
(referred to as Versions 1 to 14)
- Model 2 symbols: 21 x 21 to 177 x 177 increasing in steps of 4 modules in both
dimensions
(referred to as Versions 1 to 40)
|
| Finder
Pattern: |
Pattern of concentric dark/light/dark squares 7 x 7 modules overall, in each
of three corners of the symbol |
| Other
Overhead: |
Function patterns (separator, timing patterns, alignment patterns), format information,
version information (versions 7-40) |
| Max. codewords: |
3706, including 750/1372/2040/2430 error correction codewords |
| Symbol character structure: |
8 cells arranged in 2 x 4 matrix (shape modified where necessary to acommodate
navigation patterns and boundary conditions) |
| Max. data per symbol: |
Numeric: 7089 digits
Alphanumeric: 4296 characters
Latin/Katakana: 2953 characters
Kanji:
1817 bytes
|
| Error control: |
-
Error control: Reed-Solomon error correction
- Error correction levels; 4 user seletable (L, M, Q and H)
- Max. errors correctable (Version 40-H symbol)
2530 erasures or 1215 errors
|
| Typical Applications: |
The primary application for MaxiCode is transportation, an in the sorting, handling
and tracking of packages by carriers. |
|
| Code Type: |
Multi-Row |
| Encodable character set: |
Deafult character set = US ASCII (ISO 646) values 0-127, plus PC437 values 125-255.
Numeric and Byte data may also be encoded efficiently.
Access to 811 800 data interpretations and character sets. |
| No. of rows: |
4-44 (in defined combinations with no. of columns) |
| Row width: |
- 1 column version:
left and right row address patterns, 1 data codeword;
40X inc. quiet zones
- 2 column version:
left and right row address patterns, 2
data codewords;
57X inc. quiet zones
- 3 column version:
left and right row address patterns, 3 data codewords;
84X inc. quiet zones
- 4 column version:
left, centre and right row address pattners, 4 data codewords;
101X inc. quiet zones
|
| Row overhead: |
- 1 and 2 column versions:
quiet zones (2X total), row address patterns (21X total)
- 3 and 4 column versions:
quiet zones (2Xtotal), row address patterns (31X total)
|
|
Row height:
|
> 2X |
| Row separators: |
No |
| No. of columns |
1, 2, 3 or 4 |
| Max. codewords: |
176 including 1 ECI descriptor and 50 error correction codewords |
| Symbol character structure: |
- Data codewords: (n, k, m) characters with n=17,
k=4, m=6
- Row address patterns (n, k) characters with n=10, k=3
|
| Max. data per symbol: |
Numeric: 366 digits
Alphanumeric: 250 characters
Full ASCII: Not directly calculable
Extended ASCII: Not
directly calculable
Byte: 150 bytes |
| Error control: |
Check characters: 2 codewords used for error detection
No. of error correction codewords: from 7 to 50,
fixed for each combination of columns and rows
Max. errors correctable: 47 erasures or 24 errors |
| Typical Applications: |
Small item marking. MicroPDF417 has been adopted as one of the 2D components
of the UCC/EAN Composite symbols. |
|
|
| Code Type: |
Multi-Row |
| Encodable character set: |
Deafult character set = US ASCII (ISO 646) values 0-127, plus PC437 values 125-255.
Numeric and Byte data may also be encoded efficiently.
Access to 811 800 data interpretations and character sets. |
| No. of rows: |
3-90 subject to (r x c) < 928 |
| Row width: |
Start/stop patterns, 3-32 symbol characters, plus quiet zones; 90 - 583X |
| Row overhead: |
Quiet zones (4X total), start/stop patterns (35X total), row indicator codewords
(34X total) |
|
Row height:
|
3X |
| Row separators: |
No |
| Row identification: |
Through row indicator characters in each row |
| No. of columns |
1 - 30 subject to (r x c) < 928 |
| Max. codewords: |
928 including 1 symbol length indicator and min. 2, max. 512 error control codewords |
| Symbol character structure: |
(n,k, m) characters with n = 17, k = 4, m = 6 |
| Max. data per symbol: |
Numeric: 2710 digits in Numeric Compaction Code
Alphanumeric: 1850 charactersin
Text Compaction Code
Full ASCII: Not directly calculable
Extended ASCII: Not
directly calculable
Byte: 1108 characters in Byte Compaction Mode |
| Error control: |
Check characters: 2 codewords used for error detection
User selectable erros correction levels: 9 (inc. level 0, no error correction)
Max. errors correctable: 509 erasures or 254 errors |
| Typical Applications: |
PDF417 is the specified symbology for shipping data in ISO 15394, and is also
used in applications by a number of industry assocations
such as the Automotive Industry Action Group and
the Electronic Industries Association of America |
|
| Code Type: |
Matrix |
| Encodable character set: |
ASCII (ISO 646 IRV) (0-127) and ISO 8859-1 (128-255).
Alternative character sets encodable using ECI protocol. |
| Matrix Size: |
Fixed, 33 rows alternately 30 and 29 modules wide (total 884 modules) |
| Finder
Pattern: |
Bull's eye pattern of three concetric dark circles and three included light areas,
at centre of the symbol, occupying equivalent of
90 modules |
| Other
Overhead: |
Orientation patterns (18 modules) and 2 unused modules |
| No. of codewords: |
144, including 50 (standard) or 66 (enhanced) error correction codewords and
in 1 mode codeword. |
| Symbol character structure: |
6 hexagonal cells arranged in 3 x 2 matrix (shape modified where necessary to
accommodate finder and oreintation patterns and
boundary condidtions) |
| Max. data per symbol: |
Numeric: 138 digits
Alphanumeric: 93 characters
|
| Error control: |
-
Error control: Reed-Solomon error correction
- Error correction levels; 2 user selectable (standard and enhanced)
- Max. errors correctable (Version 40-H symbol)
2430 erasures or 1215 errors
|
| Typical Applications: |
QR Code can be found in applications in the motor and electronics manufacturing
industries, on manufacturing documentation and
in high-speed sortation systems. |
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