Argox AS-9500 User Manual download pdf (Page 141)

140

The reader performs the check character computation below:

(0 x 1 + 1 x 2 + 2 x 1 + 8 x 2 + 4 x 1 + 5 x 2 + 4 x 1) modulo 10

= (0 + 2 + 2 + (1 + 6) + 4 + (1 + 0) + 4) modulo 10

= 0

Since the result is zero, the message is considered to be valid, so

the reader outputs the message: 012845

OCR ISBN Application Example

One application of OCR is to read the ISBN characters typically

encoded using the OCR-A or OCR-B font. This is especially

useful when the ISBN number is not encoded in an EAN-13 bar

code. The following example shows how to

configure the imager to read the ISBN strings on books in Japan.

After you have followed the steps below, you will be able to scan

the following ISBN number or the additional data below it,

depending on the line of text at which the imager is

aimed.

1. Scan the OCR-B On bar code

2. Program the user-defined variable “g” to comprise the ten digits

plus the dash: 0123456789-

3. In Japan, it is common for two fields to follow the ISBN number,

the three digit price field, and the four digit price field. The first

field typically starts with a “C” (uppercase c), followed by four

digits. The second field typically starts

with a “P” or a yen symbol, followed by three or four digits,

followed by an “E.” Program the user-defined variable “h” to

comprise the “P” and the yen symbol (represented by a backslash).

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 158 159

No comments

Argox AS-9500 User Manual Page 141