发明名称 |
Omnidirectional scanning method and apparatus |
摘要 |
A method and apparatus for reading encoded symbols such as bar code labels at any orientation to a raster scanning device. A pattern of virtual scan lines is selected over the two-dimensional imaging region according to the specifications of the images to be read. The pattern is generated by defining a family of parallel lines of a certain spacing and rotating the family by a specified angle until the two-dimensional imaging region is covered. Only the data at selected raster locations on the virtual scan lines is stored and processed. One-dimensional signal processing methods are used to detect edges and decode the encoded symbols.
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申请公布号 |
US5635699(A) |
申请公布日期 |
1997.06.03 |
申请号 |
US19950519598 |
申请日期 |
1995.08.25 |
申请人 |
SPECTRA-PHYSICS SCANNING SYSTEMS, INC. |
发明人 |
CHERRY, CRAIG D.;ACTIS, ROBERT J. |
分类号 |
G06K7/10;G06K9/32;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/10 |
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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