Casio DT-X8 Series Software Manual page 69

Decode Level Setting
Mode
Standard Standard Mode
Mode This mode is used standard mode only for scanning.
High Mode The dual decoders system initially decodes a scanned bar code data using the
standard decoder, but if decoding fails, it uses the following additional decoder to
scan the same bar code. This dual decoders system supports the bar code
symbologies listed below.
- Code39
- Code128
- EAN
With the decoding system used for the previous CASIO handheld terminals,
decoding is processed with a mean value of one module adding bar thickness of
each black bar and white bar for one character when performing binaryzation or
quardruplzation of bar thickness. However, this method does not accurately
decode a bar code if it is formed with unbalanced bar thickness between white bars
and black bars.
The dual decoders system can solve it by calculating separately each mean value
of black bars and white bars for such a bar code with unbalanced thickness of
white and black bars by changing the threshold level of decoding.
Steady Mode This mode is available to accurate scanning operation by scanning under bar ratio
check is set strictly condition in decode logic.
Then it is available to prevent to mis-reading the following barcodes type.
- Code128
- EAN
About the uppers barcode type, bar ratio check is strictly than standard mode.
Then scanning operation will be accurate. But when you scan bad quality printing
barcode, it is possible that scanning response will be slower than standard mode.
Other barcode scanning performance is same as standard mode.
The functions of the Laser Scanner Library relevant to the Dual Decoders System are as follows.
OBRSetDecodeLevel
OBRGetDecodeLevel : Retrieves decoding level.
: Sets up decoding level.
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Description