B - Qr Code; Error Correction - Intermec EasyCoder PD4 Programmer's Reference Manual

b – QR Code
QR Code is a matrix symbology, defined in AIM International
Description
ITS/97-001.
Basic characteristics for QR Code:
QR Code can be encoded as
two models;
Model Version
Symbol size in cell, (increment
of 4 cells)
1. Numeric data mode: Digits
0-9;
2. Alphanumeric data mode:
Digits 0-9; upper case letters
A-Z; nine other characters
3. 8-bit byte data mode: JIS
8-bit character set (Latin and
Kana) in accordance with
JIS X 0201
4. Kanji data mode:
Shift JIS X 0208
5. Mixing mode: Mix of mode
1-4 above
Note: The maximum data length in
780 bytes.

Error correction:

Four levels of Reed-Solomon error correction allowing recovery
of:
L
M
Q
H
Masking (intrinsic):
This enables the ratio of dark to light modules in the symbol
to be approximated to 1:1 whilst minimizing the occurrence of
arrangements of close modules which would prevent efficient
decoding.
ESim v5.12 for EasyCoder PD4—Programmer's Reference Manual
7%
15%
25%
30%
Chapter —Commands
Model 1
original
21*21 to 73*73
Max: 1167 char Max: 7089 char
Max: 707 char Max: 4296 char
Max: 486 char Max: 2953 char
Max: 299 char Max: 1817 char
NA
ESim is approximately
Model 2
enhanced
21*21 to
177*177
Applicable
4