发明名称 |
METHOD AND APPARATUS FOR READING TWO-DIMENSIONAL BAR CODE SYMBOLS WITH AN ELONGATED LASER LINE |
摘要 |
METHOD AND APPARATUS FOR READING TWO-DIMENSIONAL BAR CODE SYMBOLS WITH AN ELONGATED LASER LINE A plurality of the areas of different light reflectivity of a bar code symbol, or the like, are simultaneously illuminated, using, e.g., a beam of laser light that has an elongated cross-section. The laser light beam is swept over the symbol in a direction transverse to the elongated dimension of the illuminated region so that a two-dimensional area of the symbol is illuminated over time, until the symbol is read. The light that reflects from the illuminated region of the symbol is imaged on a linear sensor array, which is then scanned or read out to produce signals representative of spatial intensity variations of the imaged light along a linear path in the field of view.
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申请公布号 |
CA2134699(A1) |
申请公布日期 |
1995.05.18 |
申请号 |
CA19942134699 |
申请日期 |
1994.10.31 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
SWARTZ, JEROME;LI, YAJUN;DVORKIS, PAUL;SPITZ, GLENN |
分类号 |
G06K7/10;G06K7/14;(IPC1-7):G06K9/18 |
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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