Universal document scanner controller
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United States of America Patent
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Feb 5, 2002
Grant Date -
N/A
app pub date -
Sep 16, 1997
filing date -
Sep 16, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A circuit implemented on a single piece of silicon or a low cost hybrid circuit that controls all the functions required to operate sheet-fed, flatbed, handheld, slides, duplex, drum and 2D still-image document scanners. The circuit performs monochrome image sensor management, color image sensor management, light source modulation, motor management, Anti-Skew Auto-Start, pixel correction, adaptative thresholding, black-sides removal, image enhancement, dithering, up/down sampling, image compression, scan and forward action management, memory management, and host interface management with plug and play capability.
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