发明授权
- 专利标题: Wand readers
- 专利标题(中): 魔杖读者
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申请号: US109021申请日: 1993-08-19
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公开(公告)号: US5352922A公开(公告)日: 1994-10-04
- 发明人: Edward Barkan , David P. Goren , Joseph Katz , Yajun Li , Jerome Swartz , Thomas Mazz
- 申请人: Edward Barkan , David P. Goren , Joseph Katz , Yajun Li , Jerome Swartz , Thomas Mazz
- 申请人地址: NY Bohemia
- 专利权人: Symbol Technologies, Inc.
- 当前专利权人: Symbol Technologies, Inc.
- 当前专利权人地址: NY Bohemia
- 主分类号: G06K7/015
- IPC分类号: G06K7/015 ; G06K7/10 ; G06K7/14 ; H01L31/06
摘要:
The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.
公开/授权文献
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