Image reading device and noise detecting method

Details Image reading device and noise detecting method Image reading device and noise detecting method

2006-04-14

2010-02-09

Thompson, James A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S504000

Reexamination Certificate

active

07660018

ABSTRACT:
An image reading device compares pixel values of an image data, which is output when a document is not at a reading position, with a threshold and generates a first dust detection data; compares a image data, which is output while the document is passing the reading position, with a threshold and generates a second dust detection data; when dust is indicated as being present at a matching position in a main scanning direction in both the first dust detection data and the second dust detection data, generates a third dust detection data; and judges that noise is present when the third dust detection data indicates that dust is continuously present for at least a prescribed length in a sub scanning line direction.

REFERENCES:
patent: 5266805 (1993-11-01), Edgar
patent: 7257270 (2007-08-01), Yamaguchi
patent: 2002/0176634 (2002-11-01), Ohashi
patent: 2005/0179954 (2005-08-01), Arai et al.
patent: 2005/0200904 (2005-09-01), Prakash
patent: 2005/0213838 (2005-09-01), Kuramoto
patent: 2006/0268345 (2006-11-01), Silverstein
patent: A 2005-64913 (2005-03-01), None

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