Scanner and method thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Oct 20, 2005
app pub date -
Apr 13, 2005
filing date -
Apr 14, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A scanner includes an optical module, a driving device, a digital gain unit and a timer. The optical module includes a photo sensing device for reading N scan lines and outputs digital image data. The driving device drives the optical module and has a position detecting device for outputting a position feedback signal corresponding to a position of the optical module. The digital gain unit performs a digital gain process on the digital image data. The timer controls the digital gain process according to the position feedback signal. The method includes setting K to 1; driving the optical module to read a Kth scan line of the to-be-scanned document and outputting Kth image data; calculating Kth exposure time for the Kth scan line and performing a digital gain process on the Kth image data; and determining if K is smaller than N.
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