OCR ISBN Application Example
Product Reference Guide
8-15
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
Summary of Contents for POWERSCAN 7000 2D Imager
Page 1: ...PowerScan 7000 2D Imager Product Reference Guide...
Page 8: ...vi PowerScan 7000 2D...
Page 30: ...Terminal Interfaces 2 12 PowerScan 7000 2D NOTES...
Page 118: ...Symbologies 6 50 PowerScan 7000 2D NOTES...
Page 130: ...Imaging Commands 7 12 PowerScan 7000 2D NOTES...
Page 148: ...OCR Programming 8 18 PowerScan 7000 2D NOTES...
Page 154: ...Utilities 9 6 PowerScan 7000 2D NOTES...
Page 182: ...Serial Programming Commands 10 28 PowerScan 7000 2D NOTES...
Page 194: ...A 8 PowerScan 7000 2D NOTES...
Page 198: ...B 4 PowerScan 7000 2D OCR Programming Chart a e d g c h t l Discard Save r...
Page 199: ...Programming Chart Product Reference Guide B 5 Programming Chart A C B F E D 1 0 2 3...
Page 201: ...Programming Chart Product Reference Guide B 7 NOTES...
Page 202: ...B 8 PowerScan 7000 2D NOTES...
Page 203: ......
