Lets create a Bar Code Symbology

1
Lets create a Bar Code Symbology

• Lets call it
• Jims Code

2
Rules

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

3
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

4
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

5
Data Representation
data character 0
6
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

7
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

8
Data Representation
data character 1
9
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

10
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

11
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

12
Data Representation
data character 2
13
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

14
Data Representation
data character 3
15
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

16
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

17
Data Representation
data character 4
18
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

19
Data Representation
data character 5
20
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

21
Data Representation
data character 6
22
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

23
Data Representation
data character 7
24
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

25
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

26
Data Representation
data character 8
27
Data Characters

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data

28
Data Representation
data character 9
29
Data Representation
30
Jims Code
31
Jims Code
32
Jims Code
33
Robustness

• Is there a way to increase the robustness and
  reduce possible decode errors?
• YES
• Establish an additional rule stating the all
  characters will contain TWO wide bars.

34
Fales Code

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data
• add 5th bar for parity
• even parity
• carries no value

35
Fales Code

• binary
• two widths
• narrow 0, wide 1
• character set
• numeric, 0 - 9
• data encoded in bars
• spaces are insignificant and carry no data
• add 5th bar for parity
• change 4th bar value to 7

36
New Code
Code now becomes TWO of FIVE
37
2 of 5 Symbology
38
Questions?