Bar-code reader and method of reading bar code
AssigneesFujitsu Limited, Fujitsu Frontech Limited
InventorsIsao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
Life of this patent
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Abstract
A plurality of bar-code candidate areas are calculated from scan data that is acquired by scanning a bar code. Feature data, which represents a specific feature, is calculated for each of the bar-code candidate areas. The bar-code candidate areas are evaluated based on their feature data to thereby determine a bar-code candidate area that has the highest probability of being a bar code. The specific feature includes any one or more of length of a differential waveform, average energy, and number of peaks in the differential waveform.
Claims12
A bar-code reader comprising:
- an extracting unit that extracts, from a scan data obtained by optically scanning a bar code, a plurality of bar-code candidate areas that have a high probability of being a bar code;
- a feature-data calculating unit that determines feature data for each of the bar-code candidate areas based on a predetermined feature;
- and
- a priority-level determining unit that determines a priority, based on the feature data determined of each of the bar-code candidate areas, of the scan data of each of the bar-code candidate areas for performing decoding.
A method of reading a bar code, comprising:
- extracting, from a scan data obtained by optically scanning a bar code, a plurality of bar-code candidate areas that have a high probability of being a bar code;
- determining feature data for each of the bar-code candidate areas based on a predetermined feature;
- and
- determining a priority, based on the feature data determined of each of the bar-code candidate areas, of the scan data of each of the bar-code candidate areas for performing decoding.
Dependencies are inferred from the claim text.