Honeywell 4600g Guía de usuario descargar pdf (Pagina 175)

9 - 11

Then scan the string below:

0128454

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 barcode. The following example shows how to con-

figure 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 barcode on page 9-2.

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).

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Honeywell 4600g Guía de usuario Pagina 175