发明名称 |
Bar code discriminating apparatus for bar code reading |
摘要 |
An apparatus for reading a bar code generally, and a Universal Product Code specifically, eliminates noise from spots on a blank area which is peripheral to the bar code. Each of the bar code characters has the same uniform width. The entire surface containing a bar code is scanned to read each of the code characters. The signal delivered from the scanning means successively indicates the widths of a white bar and a black bar adjacent thereto and the wdiths of a black bar and a white bar adjacent thereto, in order to alternately deliver width data corresponding to the adjacent white and black bars and to the adjacent black and white bars. These width signals are added and compared to the uniform width in order to deliver the output signal responsive to a sequential analysis of the width signals.
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申请公布号 |
US4667089(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19840626678 |
申请日期 |
1984.07.02 |
申请人 |
NEC CORPORATION |
发明人 |
SHIRAKABE, KAZUHISA;ISHII, KAZUO;IRIONO, MASATOSHI |
分类号 |
G06K7/016;G06K7/10;G06K7/14;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/016 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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