Datalogic Scanning 7000 manual OCR Isbn Application Example, 0123456789

OCR ISBN Application Example

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 on page 8-3.

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 dig- its. 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).

P\

4.Scan the symbol below to set up three templates to handle the ISBN number, the three digit price field, and the four digit price field.

5.Finally, set up the ISBN check digit, which is a special position- weighted modulo 11 checksum. The imager automatically invokes the ISBN checksum for template rows that are:

1.) at least fourteen characters long,

2.) whose first four characters are the letters “ISBN,”

3.) whose last character is a check character, and

Product Reference Guide 8-15