Casio IT-800 Series, Руководство пользователя программного обеспечения, Страница: 66 / 325

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Decode Learning Function
This function is to automatically change parameters for criteria and threshold level used to judge
on decoding bar code data so that scanning a bar code printed in poor quality can be improved.
However, after changing the relevant parameters for the
Decode Learning function, the
individual scanning characteristics of each terminal may be degraded. To avoid such degrade, the
integrated decoding system starts decoding with the standard decoder and then changes with the
customized decoder if decoding at the first stage fails. If the decoding at the end of the process
does not succeed, the
Decode Learning function is used to ensure it to be succeeded. Setting
either “Enable” or “Disable” for the function to be effect can be set. See the decoding process
flow in the following figure.
Figure 2-7
The functions of the Laser Scanner Library relevant to the “Decode Learning function” are as
follows.
OBRSetDecodeLearningMode
:
Sets up the decoder learning mode.
OBRGetDecodeLearningMode
:
Retrieves the decoder learning mode.
Decoding OK?
With standard decoder
With customized decoder
Decoding fails
Decoding OK?
Decoding succeeds.
Decoding starts
Decoding with Decode Learning function
Decoding OK?
No
Yes
No
Yes
No
Yes