发明名称 Color scanner using both variable led exposure time and photodetector output compensation
摘要 The present invention provides a combination of first providing a coarse adjustment by varying the emitter power and duration of the emitter/detector exposure time, and then providing a fine adjustment by storing a correction value for each photodetector element. The adjustment for each photodetector corrects not only for the range, but also for the offset, providing two correction values. In a preferred embodiment, the low and high voltage reference levels for an analog to digital converter are adjusted and stored for each photodetector for each color.
申请公布号 AU6390796(A) 申请公布日期 1997.02.05
申请号 AU19960063907 申请日期 1996.06.21
申请人 LOGITECH, INC. 发明人 BRADLEY N. SUGGS;ALI MOAYER
分类号 H04N1/40;H04N1/401;H04N1/48 主分类号 H04N1/40
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