Document scanner for book document

Details Document scanner for book document Document scanner for book document

1995-09-18

1998-06-09

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358488, 355 25, 355 23, H04N 104

Patent

active

057643792

ABSTRACT:
An image reading apparatus which reads book-like documents placed on a document platen in a face upward condition. A first detector detects the height of the document surface by the shape of a side surface of the document, and a second detector detects the height of the document by the shape of the document surface. A discrimination device detects abnormal height data detected by the detectors, and distortion of image data output from an imaging device is corrected using height data determined to have no abnormality.

REFERENCES:
patent: 3868478 (1975-02-01), Zeenkov
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patent: 5184733 (1993-02-01), Arnarson et al.
patent: 5194729 (1993-03-01), Okisu et al.
patent: 5276530 (1994-01-01), Siegel
patent: 5416609 (1995-05-01), Matsuda
patent: 5585926 (1996-12-01), Fujii
patent: 5616914 (1997-04-01), Matsuda

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