发明名称 |
Adaptive bar code scanner. |
摘要 |
<p>A symbol scanning system which adaptively changes scanning system parameters including light beam pattern and focus to improve barcode readability. The scanning system including: a scanner, responsive to coordinate control signals, for directing a light beam in a pattern at a symbol at a predetermined location, detecting a reflected portion of the light beam, and generating a feedback signal corresponding to the detected portion of the reflected light beam; a microprocessor, responsive to the feedback signal, for generating pattern control signals; a pattern generator for generating the coordinate control signals in responsive to the pattern control signals and for determining the light beam pattern; and signal processing circuitry, including drive and control units, for adjusting gain, bandwidth, and digitizer threshold levels.</p> |
申请公布号 |
EP0574024(A2) |
申请公布日期 |
1993.12.15 |
申请号 |
EP19930109468 |
申请日期 |
1993.06.14 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
KATZ, JOSEPH;METLITSKY, BORIS;SWARTZ, JEROME;BARKAN, EDWARD;SPITZ, GLENN S. |
分类号 |
G06K7/00;G06K7/10;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/00 |
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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